/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 15:32:43,800 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 15:32:43,802 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 15:32:43,839 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 15:32:43,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-Separate.epf [2022-01-18 15:32:43,945 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 15:32:43,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 15:32:43,946 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 15:32:43,946 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 15:32:43,947 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 15:32:43,947 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 15:32:43,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 15:32:43,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 15:32:43,948 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 15:32:43,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 15:32:43,948 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 15:32:43,949 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 15:32:43,950 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 15:32:43,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 15:32:43,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 15:32:43,950 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 15:32:43,950 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 15:32:43,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 15:32:43,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 15:32:43,952 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 15:32:43,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 15:32:43,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 15:32:43,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 15:32:43,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 15:32:43,953 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 15:32:43,953 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 15:32:43,953 INFO L138 SettingsManager]: * Check the insufficient thread errors last=true [2022-01-18 15:32:43,953 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 15:32:44,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 15:32:44,202 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 15:32:44,204 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 15:32:44,205 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 15:32:44,205 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 15:32:44,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl [2022-01-18 15:32:44,206 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/chl/word-trans.wvr.bpl' [2022-01-18 15:32:44,229 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 15:32:44,230 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 15:32:44,235 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 15:32:44,235 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 15:32:44,235 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 15:32:44,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,256 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,262 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 15:32:44,263 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 15:32:44,264 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 15:32:44,264 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 15:32:44,264 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 15:32:44,269 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,269 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,270 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,271 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,274 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,276 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,278 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 15:32:44,279 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 15:32:44,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 15:32:44,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 15:32:44,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/1) ... [2022-01-18 15:32:44,286 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 15:32:44,292 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:32:44,303 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 15:32:44,307 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 15:32:44,329 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 15:32:44,329 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 15:32:44,329 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 15:32:44,329 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 15:32:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 15:32:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 15:32:44,330 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 15:32:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 15:32:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 15:32:44,330 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 15:32:44,330 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 15:32:44,330 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 15:32:44,331 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 15:32:44,374 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 15:32:44,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 15:32:44,482 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 15:32:44,533 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 15:32:44,533 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-01-18 15:32:44,535 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:32:44 BoogieIcfgContainer [2022-01-18 15:32:44,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 15:32:44,537 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 15:32:44,537 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 15:32:44,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 15:32:44,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:32:44" (1/2) ... [2022-01-18 15:32:44,541 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fcbfe9b and model type word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:32:44, skipping insertion in model container [2022-01-18 15:32:44,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:32:44" (2/2) ... [2022-01-18 15:32:44,542 INFO L111 eAbstractionObserver]: Analyzing ICFG word-trans.wvr.bpl [2022-01-18 15:32:44,546 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 15:32:44,546 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 15:32:44,546 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 15:32:44,546 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 15:32:44,609 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 15:32:44,659 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 15:32:44,675 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 15:32:44,675 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 15:32:44,688 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 32 places, 28 transitions, 80 flow [2022-01-18 15:32:44,739 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:44,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 15:32:44,760 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:44,760 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:44,761 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:44,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:44,770 INFO L85 PathProgramCache]: Analyzing trace with hash 793953639, now seen corresponding path program 1 times [2022-01-18 15:32:44,778 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:44,778 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438240797] [2022-01-18 15:32:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:44,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:45,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:45,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:45,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438240797] [2022-01-18 15:32:45,020 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438240797] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:45,020 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:45,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:45,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788193398] [2022-01-18 15:32:45,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:45,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:45,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:45,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:45,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:45,059 INFO L87 Difference]: Start difference. First operand has 108 states, 107 states have (on average 3.4953271028037385) internal successors, (374), 107 states have internal predecessors, (374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:45,217 INFO L93 Difference]: Finished difference Result 230 states and 687 transitions. [2022-01-18 15:32:45,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:45,220 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 15:32:45,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:45,234 INFO L225 Difference]: With dead ends: 230 [2022-01-18 15:32:45,234 INFO L226 Difference]: Without dead ends: 215 [2022-01-18 15:32:45,237 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:45,250 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:45,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:45,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-01-18 15:32:45,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 126. [2022-01-18 15:32:45,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 3.368) internal successors, (421), 125 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 421 transitions. [2022-01-18 15:32:45,329 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 421 transitions. Word has length 14 [2022-01-18 15:32:45,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:45,329 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 421 transitions. [2022-01-18 15:32:45,330 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,330 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 421 transitions. [2022-01-18 15:32:45,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 15:32:45,332 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:45,332 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:45,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 15:32:45,332 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:45,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:45,333 INFO L85 PathProgramCache]: Analyzing trace with hash -398208309, now seen corresponding path program 2 times [2022-01-18 15:32:45,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:45,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182670311] [2022-01-18 15:32:45,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:45,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:45,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:45,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:45,486 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:45,486 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182670311] [2022-01-18 15:32:45,486 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182670311] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:45,487 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:45,487 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:45,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604827202] [2022-01-18 15:32:45,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:45,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:45,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:45,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:45,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:45,490 INFO L87 Difference]: Start difference. First operand 126 states and 421 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:45,646 INFO L93 Difference]: Finished difference Result 257 states and 779 transitions. [2022-01-18 15:32:45,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:45,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 15:32:45,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:45,652 INFO L225 Difference]: With dead ends: 257 [2022-01-18 15:32:45,652 INFO L226 Difference]: Without dead ends: 242 [2022-01-18 15:32:45,653 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:45,657 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 34 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:45,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 29 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:45,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-18 15:32:45,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 132. [2022-01-18 15:32:45,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 131 states have (on average 3.312977099236641) internal successors, (434), 131 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 434 transitions. [2022-01-18 15:32:45,683 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 434 transitions. Word has length 14 [2022-01-18 15:32:45,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:45,684 INFO L470 AbstractCegarLoop]: Abstraction has 132 states and 434 transitions. [2022-01-18 15:32:45,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,684 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 434 transitions. [2022-01-18 15:32:45,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 15:32:45,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:45,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:45,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 15:32:45,686 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:45,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:45,687 INFO L85 PathProgramCache]: Analyzing trace with hash 484418539, now seen corresponding path program 3 times [2022-01-18 15:32:45,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:45,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760837536] [2022-01-18 15:32:45,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:45,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:45,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:45,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:45,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:45,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760837536] [2022-01-18 15:32:45,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760837536] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:45,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:45,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:45,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488568540] [2022-01-18 15:32:45,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:45,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:45,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:45,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:45,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:45,778 INFO L87 Difference]: Start difference. First operand 132 states and 434 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:45,885 INFO L93 Difference]: Finished difference Result 244 states and 710 transitions. [2022-01-18 15:32:45,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:45,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 15:32:45,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:45,893 INFO L225 Difference]: With dead ends: 244 [2022-01-18 15:32:45,893 INFO L226 Difference]: Without dead ends: 229 [2022-01-18 15:32:45,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:45,900 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:45,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 30 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:45,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-01-18 15:32:45,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 136. [2022-01-18 15:32:45,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 136 states, 135 states have (on average 3.3333333333333335) internal successors, (450), 135 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 450 transitions. [2022-01-18 15:32:45,918 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 450 transitions. Word has length 14 [2022-01-18 15:32:45,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:45,918 INFO L470 AbstractCegarLoop]: Abstraction has 136 states and 450 transitions. [2022-01-18 15:32:45,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:45,919 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 450 transitions. [2022-01-18 15:32:45,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 15:32:45,920 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:45,920 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:45,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 15:32:45,921 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:45,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:45,924 INFO L85 PathProgramCache]: Analyzing trace with hash 843948803, now seen corresponding path program 4 times [2022-01-18 15:32:45,924 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:45,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110407782] [2022-01-18 15:32:45,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:45,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:45,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:46,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:46,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:46,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110407782] [2022-01-18 15:32:46,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110407782] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:46,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:46,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:46,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778525485] [2022-01-18 15:32:46,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:46,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:46,020 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:46,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:46,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:46,021 INFO L87 Difference]: Start difference. First operand 136 states and 450 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:46,166 INFO L93 Difference]: Finished difference Result 251 states and 743 transitions. [2022-01-18 15:32:46,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:46,166 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 15:32:46,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:46,168 INFO L225 Difference]: With dead ends: 251 [2022-01-18 15:32:46,169 INFO L226 Difference]: Without dead ends: 236 [2022-01-18 15:32:46,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:46,173 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 32 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:46,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 31 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:46,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-01-18 15:32:46,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 140. [2022-01-18 15:32:46,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 3.2949640287769784) internal successors, (458), 139 states have internal predecessors, (458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 458 transitions. [2022-01-18 15:32:46,193 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 458 transitions. Word has length 14 [2022-01-18 15:32:46,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:46,193 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 458 transitions. [2022-01-18 15:32:46,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,193 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 458 transitions. [2022-01-18 15:32:46,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 15:32:46,201 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:46,201 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:46,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 15:32:46,202 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:46,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:46,203 INFO L85 PathProgramCache]: Analyzing trace with hash 786576039, now seen corresponding path program 5 times [2022-01-18 15:32:46,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:46,203 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502530072] [2022-01-18 15:32:46,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:46,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:46,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:46,266 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:46,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502530072] [2022-01-18 15:32:46,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502530072] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:46,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:46,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:46,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223333991] [2022-01-18 15:32:46,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:46,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:46,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:46,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:46,268 INFO L87 Difference]: Start difference. First operand 140 states and 458 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:46,386 INFO L93 Difference]: Finished difference Result 279 states and 867 transitions. [2022-01-18 15:32:46,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:46,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 15:32:46,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:46,389 INFO L225 Difference]: With dead ends: 279 [2022-01-18 15:32:46,389 INFO L226 Difference]: Without dead ends: 264 [2022-01-18 15:32:46,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:46,393 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:46,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 32 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:46,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-18 15:32:46,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 142. [2022-01-18 15:32:46,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2022-01-18 15:32:46,402 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2022-01-18 15:32:46,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:46,403 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2022-01-18 15:32:46,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,403 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2022-01-18 15:32:46,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-01-18 15:32:46,404 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:46,404 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:46,404 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 15:32:46,405 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:46,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:46,406 INFO L85 PathProgramCache]: Analyzing trace with hash -1513926101, now seen corresponding path program 6 times [2022-01-18 15:32:46,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:46,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580243194] [2022-01-18 15:32:46,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:46,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:46,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:46,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:46,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580243194] [2022-01-18 15:32:46,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580243194] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:46,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:46,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:46,500 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428458535] [2022-01-18 15:32:46,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:46,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:46,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:46,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:46,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:46,501 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:46,621 INFO L93 Difference]: Finished difference Result 270 states and 831 transitions. [2022-01-18 15:32:46,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:46,622 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2022-01-18 15:32:46,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:46,624 INFO L225 Difference]: With dead ends: 270 [2022-01-18 15:32:46,624 INFO L226 Difference]: Without dead ends: 255 [2022-01-18 15:32:46,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:46,625 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 30 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:46,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 37 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:46,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-01-18 15:32:46,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 142. [2022-01-18 15:32:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.3120567375886525) internal successors, (467), 141 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 467 transitions. [2022-01-18 15:32:46,636 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 467 transitions. Word has length 14 [2022-01-18 15:32:46,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:46,636 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 467 transitions. [2022-01-18 15:32:46,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,637 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 467 transitions. [2022-01-18 15:32:46,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:46,637 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:46,637 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:46,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 15:32:46,638 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:46,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:46,639 INFO L85 PathProgramCache]: Analyzing trace with hash -1127050216, now seen corresponding path program 1 times [2022-01-18 15:32:46,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:46,639 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074003447] [2022-01-18 15:32:46,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:46,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:46,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:46,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:46,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074003447] [2022-01-18 15:32:46,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074003447] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:46,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:46,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:46,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573540391] [2022-01-18 15:32:46,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:46,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:46,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:46,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:46,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:46,733 INFO L87 Difference]: Start difference. First operand 142 states and 467 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:46,829 INFO L93 Difference]: Finished difference Result 257 states and 749 transitions. [2022-01-18 15:32:46,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:46,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:46,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:46,831 INFO L225 Difference]: With dead ends: 257 [2022-01-18 15:32:46,831 INFO L226 Difference]: Without dead ends: 224 [2022-01-18 15:32:46,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:46,833 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 35 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:46,833 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 30 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:46,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-01-18 15:32:46,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 142. [2022-01-18 15:32:46,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 141 states have (on average 3.276595744680851) internal successors, (462), 141 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 462 transitions. [2022-01-18 15:32:46,840 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 462 transitions. Word has length 15 [2022-01-18 15:32:46,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:46,840 INFO L470 AbstractCegarLoop]: Abstraction has 142 states and 462 transitions. [2022-01-18 15:32:46,840 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:46,840 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 462 transitions. [2022-01-18 15:32:46,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:46,841 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:46,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:46,841 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 15:32:46,841 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:46,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:46,842 INFO L85 PathProgramCache]: Analyzing trace with hash -1302869542, now seen corresponding path program 1 times [2022-01-18 15:32:46,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:46,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [953068372] [2022-01-18 15:32:46,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:46,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:46,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:46,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:46,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [953068372] [2022-01-18 15:32:46,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [953068372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:46,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:46,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:46,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215402344] [2022-01-18 15:32:46,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:46,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:46,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:46,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:46,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:46,902 INFO L87 Difference]: Start difference. First operand 142 states and 462 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:47,049 INFO L93 Difference]: Finished difference Result 280 states and 838 transitions. [2022-01-18 15:32:47,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:47,049 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:47,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:47,051 INFO L225 Difference]: With dead ends: 280 [2022-01-18 15:32:47,051 INFO L226 Difference]: Without dead ends: 259 [2022-01-18 15:32:47,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:47,052 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 40 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:47,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 30 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:47,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-01-18 15:32:47,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 147. [2022-01-18 15:32:47,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.287671232876712) internal successors, (480), 146 states have internal predecessors, (480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 480 transitions. [2022-01-18 15:32:47,060 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 480 transitions. Word has length 15 [2022-01-18 15:32:47,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:47,060 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 480 transitions. [2022-01-18 15:32:47,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,061 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 480 transitions. [2022-01-18 15:32:47,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:47,061 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:47,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:47,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 15:32:47,062 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:47,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:47,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1442736794, now seen corresponding path program 2 times [2022-01-18 15:32:47,062 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:47,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546120138] [2022-01-18 15:32:47,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:47,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:47,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:47,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:47,105 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:47,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546120138] [2022-01-18 15:32:47,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546120138] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:47,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:47,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:47,105 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012384268] [2022-01-18 15:32:47,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:47,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:47,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:47,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:47,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:47,107 INFO L87 Difference]: Start difference. First operand 147 states and 480 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:47,200 INFO L93 Difference]: Finished difference Result 278 states and 832 transitions. [2022-01-18 15:32:47,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:47,200 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:47,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:47,202 INFO L225 Difference]: With dead ends: 278 [2022-01-18 15:32:47,202 INFO L226 Difference]: Without dead ends: 251 [2022-01-18 15:32:47,202 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:47,204 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 33 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:47,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 31 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:47,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-18 15:32:47,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 147. [2022-01-18 15:32:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 3.267123287671233) internal successors, (477), 146 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 477 transitions. [2022-01-18 15:32:47,213 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 477 transitions. Word has length 15 [2022-01-18 15:32:47,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:47,213 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 477 transitions. [2022-01-18 15:32:47,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,214 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 477 transitions. [2022-01-18 15:32:47,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:47,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:47,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:47,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 15:32:47,215 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:47,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:47,215 INFO L85 PathProgramCache]: Analyzing trace with hash -229896958, now seen corresponding path program 2 times [2022-01-18 15:32:47,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:47,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217545747] [2022-01-18 15:32:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:47,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:47,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:47,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:47,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217545747] [2022-01-18 15:32:47,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217545747] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:47,273 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:47,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:47,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204472203] [2022-01-18 15:32:47,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:47,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:47,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:47,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:47,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:47,275 INFO L87 Difference]: Start difference. First operand 147 states and 477 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:47,391 INFO L93 Difference]: Finished difference Result 278 states and 835 transitions. [2022-01-18 15:32:47,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:47,392 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:47,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:47,393 INFO L225 Difference]: With dead ends: 278 [2022-01-18 15:32:47,393 INFO L226 Difference]: Without dead ends: 256 [2022-01-18 15:32:47,394 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:47,394 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 41 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:47,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 34 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:47,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-01-18 15:32:47,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 150. [2022-01-18 15:32:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 3.2751677852348995) internal successors, (488), 149 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 488 transitions. [2022-01-18 15:32:47,400 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 488 transitions. Word has length 15 [2022-01-18 15:32:47,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:47,400 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 488 transitions. [2022-01-18 15:32:47,400 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,400 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 488 transitions. [2022-01-18 15:32:47,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:47,401 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:47,401 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:47,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 15:32:47,401 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:47,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1321869465, now seen corresponding path program 1 times [2022-01-18 15:32:47,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:47,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566481848] [2022-01-18 15:32:47,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:47,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:47,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:47,432 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:47,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566481848] [2022-01-18 15:32:47,432 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566481848] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:47,432 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:47,432 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:47,432 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2122342288] [2022-01-18 15:32:47,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:47,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:47,433 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:47,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:47,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:47,434 INFO L87 Difference]: Start difference. First operand 150 states and 488 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:47,523 INFO L93 Difference]: Finished difference Result 281 states and 835 transitions. [2022-01-18 15:32:47,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:47,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:47,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:47,526 INFO L225 Difference]: With dead ends: 281 [2022-01-18 15:32:47,526 INFO L226 Difference]: Without dead ends: 262 [2022-01-18 15:32:47,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:47,527 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 42 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:47,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 33 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:47,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-01-18 15:32:47,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 154. [2022-01-18 15:32:47,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 153 states have (on average 3.281045751633987) internal successors, (502), 153 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 502 transitions. [2022-01-18 15:32:47,533 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 502 transitions. Word has length 15 [2022-01-18 15:32:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:47,533 INFO L470 AbstractCegarLoop]: Abstraction has 154 states and 502 transitions. [2022-01-18 15:32:47,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,533 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 502 transitions. [2022-01-18 15:32:47,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:47,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:47,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:47,534 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 15:32:47,535 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:47,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:47,535 INFO L85 PathProgramCache]: Analyzing trace with hash 129707517, now seen corresponding path program 2 times [2022-01-18 15:32:47,538 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:47,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257482997] [2022-01-18 15:32:47,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:47,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:47,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:47,592 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:47,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257482997] [2022-01-18 15:32:47,592 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257482997] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:47,592 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:47,592 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:47,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002511512] [2022-01-18 15:32:47,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:47,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:47,593 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:47,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:47,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:47,594 INFO L87 Difference]: Start difference. First operand 154 states and 502 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:47,707 INFO L93 Difference]: Finished difference Result 373 states and 1108 transitions. [2022-01-18 15:32:47,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:32:47,707 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:47,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:47,709 INFO L225 Difference]: With dead ends: 373 [2022-01-18 15:32:47,709 INFO L226 Difference]: Without dead ends: 354 [2022-01-18 15:32:47,709 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:47,709 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 47 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:47,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 45 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:47,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-18 15:32:47,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 156. [2022-01-18 15:32:47,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2838709677419353) internal successors, (509), 155 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 509 transitions. [2022-01-18 15:32:47,715 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 509 transitions. Word has length 15 [2022-01-18 15:32:47,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:47,716 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 509 transitions. [2022-01-18 15:32:47,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,716 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 509 transitions. [2022-01-18 15:32:47,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:47,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:47,717 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:47,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 15:32:47,717 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:47,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:47,717 INFO L85 PathProgramCache]: Analyzing trace with hash -2132703724, now seen corresponding path program 3 times [2022-01-18 15:32:47,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:47,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013601665] [2022-01-18 15:32:47,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:47,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:47,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:47,766 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:47,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013601665] [2022-01-18 15:32:47,766 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013601665] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:47,767 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:47,767 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:47,767 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752664434] [2022-01-18 15:32:47,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:47,767 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:47,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:47,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:47,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:47,768 INFO L87 Difference]: Start difference. First operand 156 states and 509 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:47,873 INFO L93 Difference]: Finished difference Result 275 states and 785 transitions. [2022-01-18 15:32:47,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:47,874 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:47,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:47,876 INFO L225 Difference]: With dead ends: 275 [2022-01-18 15:32:47,876 INFO L226 Difference]: Without dead ends: 242 [2022-01-18 15:32:47,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:47,877 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 37 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:47,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 30 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:47,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-01-18 15:32:47,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 156. [2022-01-18 15:32:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2580645161290325) internal successors, (505), 155 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 505 transitions. [2022-01-18 15:32:47,883 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 505 transitions. Word has length 15 [2022-01-18 15:32:47,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:47,883 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 505 transitions. [2022-01-18 15:32:47,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:47,883 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 505 transitions. [2022-01-18 15:32:47,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:47,884 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:47,884 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:47,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 15:32:47,884 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:47,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:47,885 INFO L85 PathProgramCache]: Analyzing trace with hash -1336190699, now seen corresponding path program 3 times [2022-01-18 15:32:47,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:47,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [920477913] [2022-01-18 15:32:47,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:47,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:47,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:47,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:47,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [920477913] [2022-01-18 15:32:47,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [920477913] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:47,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:47,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:47,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580195045] [2022-01-18 15:32:47,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:47,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:47,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:47,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:47,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:47,948 INFO L87 Difference]: Start difference. First operand 156 states and 505 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,057 INFO L93 Difference]: Finished difference Result 276 states and 800 transitions. [2022-01-18 15:32:48,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:48,058 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,059 INFO L225 Difference]: With dead ends: 276 [2022-01-18 15:32:48,059 INFO L226 Difference]: Without dead ends: 257 [2022-01-18 15:32:48,060 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,060 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,060 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 30 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-18 15:32:48,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 156. [2022-01-18 15:32:48,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2580645161290325) internal successors, (505), 155 states have internal predecessors, (505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 505 transitions. [2022-01-18 15:32:48,066 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 505 transitions. Word has length 15 [2022-01-18 15:32:48,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,066 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 505 transitions. [2022-01-18 15:32:48,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,066 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 505 transitions. [2022-01-18 15:32:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,067 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 15:32:48,067 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1816909085, now seen corresponding path program 4 times [2022-01-18 15:32:48,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665352975] [2022-01-18 15:32:48,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:48,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:48,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665352975] [2022-01-18 15:32:48,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665352975] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:48,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:48,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:48,114 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878889984] [2022-01-18 15:32:48,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:48,114 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:48,114 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:48,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:48,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:48,115 INFO L87 Difference]: Start difference. First operand 156 states and 505 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,201 INFO L93 Difference]: Finished difference Result 246 states and 733 transitions. [2022-01-18 15:32:48,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:48,202 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,203 INFO L225 Difference]: With dead ends: 246 [2022-01-18 15:32:48,203 INFO L226 Difference]: Without dead ends: 223 [2022-01-18 15:32:48,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,206 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,206 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 24 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-18 15:32:48,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 156. [2022-01-18 15:32:48,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 155 states have (on average 3.2451612903225806) internal successors, (503), 155 states have internal predecessors, (503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 503 transitions. [2022-01-18 15:32:48,213 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 503 transitions. Word has length 15 [2022-01-18 15:32:48,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,213 INFO L470 AbstractCegarLoop]: Abstraction has 156 states and 503 transitions. [2022-01-18 15:32:48,213 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,213 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 503 transitions. [2022-01-18 15:32:48,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,214 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,214 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 15:32:48,214 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,214 INFO L85 PathProgramCache]: Analyzing trace with hash -2004830762, now seen corresponding path program 4 times [2022-01-18 15:32:48,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600428450] [2022-01-18 15:32:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:48,268 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:48,269 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:48,269 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600428450] [2022-01-18 15:32:48,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600428450] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:48,269 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:48,269 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:48,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170696182] [2022-01-18 15:32:48,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:48,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:48,270 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:48,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:48,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:48,270 INFO L87 Difference]: Start difference. First operand 156 states and 503 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,367 INFO L93 Difference]: Finished difference Result 267 states and 773 transitions. [2022-01-18 15:32:48,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:48,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,369 INFO L225 Difference]: With dead ends: 267 [2022-01-18 15:32:48,369 INFO L226 Difference]: Without dead ends: 245 [2022-01-18 15:32:48,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,370 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 36 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-01-18 15:32:48,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 158. [2022-01-18 15:32:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.248407643312102) internal successors, (510), 157 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 510 transitions. [2022-01-18 15:32:48,376 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 510 transitions. Word has length 15 [2022-01-18 15:32:48,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,376 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 510 transitions. [2022-01-18 15:32:48,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,377 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 510 transitions. [2022-01-18 15:32:48,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,377 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 15:32:48,378 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,378 INFO L85 PathProgramCache]: Analyzing trace with hash -377237420, now seen corresponding path program 3 times [2022-01-18 15:32:48,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147468531] [2022-01-18 15:32:48,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:48,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:48,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:48,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147468531] [2022-01-18 15:32:48,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147468531] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:48,407 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:48,407 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:48,407 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342216627] [2022-01-18 15:32:48,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:48,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:48,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:48,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:48,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:48,408 INFO L87 Difference]: Start difference. First operand 158 states and 510 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,491 INFO L93 Difference]: Finished difference Result 285 states and 834 transitions. [2022-01-18 15:32:48,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:48,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,493 INFO L225 Difference]: With dead ends: 285 [2022-01-18 15:32:48,493 INFO L226 Difference]: Without dead ends: 264 [2022-01-18 15:32:48,493 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,494 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 41 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 121 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,494 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 34 Invalid, 124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 121 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-01-18 15:32:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 158. [2022-01-18 15:32:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 158 states, 157 states have (on average 3.248407643312102) internal successors, (510), 157 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 510 transitions. [2022-01-18 15:32:48,500 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 510 transitions. Word has length 15 [2022-01-18 15:32:48,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,500 INFO L470 AbstractCegarLoop]: Abstraction has 158 states and 510 transitions. [2022-01-18 15:32:48,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,500 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 510 transitions. [2022-01-18 15:32:48,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,501 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 15:32:48,501 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,502 INFO L85 PathProgramCache]: Analyzing trace with hash 48205174, now seen corresponding path program 4 times [2022-01-18 15:32:48,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647719106] [2022-01-18 15:32:48,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:48,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:48,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:48,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647719106] [2022-01-18 15:32:48,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647719106] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:48,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:48,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:48,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830994477] [2022-01-18 15:32:48,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:48,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:48,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:48,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:48,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:48,531 INFO L87 Difference]: Start difference. First operand 158 states and 510 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,642 INFO L93 Difference]: Finished difference Result 329 states and 972 transitions. [2022-01-18 15:32:48,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:32:48,642 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,644 INFO L225 Difference]: With dead ends: 329 [2022-01-18 15:32:48,644 INFO L226 Difference]: Without dead ends: 308 [2022-01-18 15:32:48,644 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,645 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 43 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 44 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-18 15:32:48,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 160. [2022-01-18 15:32:48,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.251572327044025) internal successors, (517), 159 states have internal predecessors, (517), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 517 transitions. [2022-01-18 15:32:48,650 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 517 transitions. Word has length 15 [2022-01-18 15:32:48,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,650 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 517 transitions. [2022-01-18 15:32:48,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,650 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 517 transitions. [2022-01-18 15:32:48,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,651 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,651 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,651 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 15:32:48,651 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,652 INFO L85 PathProgramCache]: Analyzing trace with hash 316350494, now seen corresponding path program 5 times [2022-01-18 15:32:48,652 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198565787] [2022-01-18 15:32:48,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:48,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:48,697 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:48,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198565787] [2022-01-18 15:32:48,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198565787] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:48,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:48,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:48,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777663731] [2022-01-18 15:32:48,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:48,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:48,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:48,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:48,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:48,699 INFO L87 Difference]: Start difference. First operand 160 states and 517 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,796 INFO L93 Difference]: Finished difference Result 312 states and 950 transitions. [2022-01-18 15:32:48,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:48,796 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,798 INFO L225 Difference]: With dead ends: 312 [2022-01-18 15:32:48,798 INFO L226 Difference]: Without dead ends: 285 [2022-01-18 15:32:48,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,799 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 32 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 33 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2022-01-18 15:32:48,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 160. [2022-01-18 15:32:48,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2022-01-18 15:32:48,804 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2022-01-18 15:32:48,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,804 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2022-01-18 15:32:48,804 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,804 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2022-01-18 15:32:48,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,805 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,805 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 15:32:48,805 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,806 INFO L85 PathProgramCache]: Analyzing trace with hash -956600189, now seen corresponding path program 5 times [2022-01-18 15:32:48,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78785643] [2022-01-18 15:32:48,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:48,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:48,842 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:48,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78785643] [2022-01-18 15:32:48,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78785643] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:48,842 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:48,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:48,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956589127] [2022-01-18 15:32:48,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:48,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:48,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:48,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:48,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:48,843 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:48,955 INFO L93 Difference]: Finished difference Result 373 states and 1130 transitions. [2022-01-18 15:32:48,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:32:48,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:48,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:48,957 INFO L225 Difference]: With dead ends: 373 [2022-01-18 15:32:48,957 INFO L226 Difference]: Without dead ends: 354 [2022-01-18 15:32:48,957 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:48,958 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 43 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:48,958 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 40 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:48,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 354 states. [2022-01-18 15:32:48,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 354 to 160. [2022-01-18 15:32:48,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.238993710691824) internal successors, (515), 159 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 515 transitions. [2022-01-18 15:32:48,964 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 515 transitions. Word has length 15 [2022-01-18 15:32:48,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:48,964 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 515 transitions. [2022-01-18 15:32:48,965 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:48,965 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 515 transitions. [2022-01-18 15:32:48,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:48,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:48,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:48,966 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 15:32:48,966 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:48,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:48,966 INFO L85 PathProgramCache]: Analyzing trace with hash 952554009, now seen corresponding path program 6 times [2022-01-18 15:32:48,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:48,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244128322] [2022-01-18 15:32:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:48,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244128322] [2022-01-18 15:32:49,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244128322] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:49,003 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791496107] [2022-01-18 15:32:49,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:49,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:49,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,004 INFO L87 Difference]: Start difference. First operand 160 states and 515 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,087 INFO L93 Difference]: Finished difference Result 274 states and 848 transitions. [2022-01-18 15:32:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,087 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,088 INFO L225 Difference]: With dead ends: 274 [2022-01-18 15:32:49,088 INFO L226 Difference]: Without dead ends: 251 [2022-01-18 15:32:49,089 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:49,089 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,090 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 25 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-01-18 15:32:49,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 160. [2022-01-18 15:32:49,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-01-18 15:32:49,096 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-01-18 15:32:49,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,096 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-01-18 15:32:49,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,096 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-01-18 15:32:49,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:49,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-01-18 15:32:49,098 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,098 INFO L85 PathProgramCache]: Analyzing trace with hash 131206424, now seen corresponding path program 6 times [2022-01-18 15:32:49,098 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400417629] [2022-01-18 15:32:49,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,098 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400417629] [2022-01-18 15:32:49,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400417629] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,140 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:49,141 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66791069] [2022-01-18 15:32:49,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:49,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:49,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,142 INFO L87 Difference]: Start difference. First operand 160 states and 513 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,256 INFO L93 Difference]: Finished difference Result 380 states and 1149 transitions. [2022-01-18 15:32:49,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:32:49,257 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:49,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,259 INFO L225 Difference]: With dead ends: 380 [2022-01-18 15:32:49,259 INFO L226 Difference]: Without dead ends: 359 [2022-01-18 15:32:49,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:49,260 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 176 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 45 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 176 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:49,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-01-18 15:32:49,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 160. [2022-01-18 15:32:49,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-01-18 15:32:49,266 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-01-18 15:32:49,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,266 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-01-18 15:32:49,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,267 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-01-18 15:32:49,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:49,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-01-18 15:32:49,268 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1160705354, now seen corresponding path program 5 times [2022-01-18 15:32:49,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493027955] [2022-01-18 15:32:49,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493027955] [2022-01-18 15:32:49,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1493027955] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,296 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,296 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:49,296 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697208468] [2022-01-18 15:32:49,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:49,297 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:49,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,297 INFO L87 Difference]: Start difference. First operand 160 states and 513 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,387 INFO L93 Difference]: Finished difference Result 272 states and 793 transitions. [2022-01-18 15:32:49,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,387 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:49,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,389 INFO L225 Difference]: With dead ends: 272 [2022-01-18 15:32:49,389 INFO L226 Difference]: Without dead ends: 250 [2022-01-18 15:32:49,389 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:49,390 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 34 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:49,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-18 15:32:49,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 160. [2022-01-18 15:32:49,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-01-18 15:32:49,395 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-01-18 15:32:49,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,396 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-01-18 15:32:49,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,396 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-01-18 15:32:49,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-01-18 15:32:49,396 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,396 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,397 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-01-18 15:32:49,397 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,397 INFO L85 PathProgramCache]: Analyzing trace with hash 833759802, now seen corresponding path program 6 times [2022-01-18 15:32:49,397 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667491413] [2022-01-18 15:32:49,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667491413] [2022-01-18 15:32:49,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667491413] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,434 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 15:32:49,434 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000600906] [2022-01-18 15:32:49,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,434 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 15:32:49,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 15:32:49,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,435 INFO L87 Difference]: Start difference. First operand 160 states and 513 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,523 INFO L93 Difference]: Finished difference Result 263 states and 757 transitions. [2022-01-18 15:32:49,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,523 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-01-18 15:32:49,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,525 INFO L225 Difference]: With dead ends: 263 [2022-01-18 15:32:49,525 INFO L226 Difference]: Without dead ends: 241 [2022-01-18 15:32:49,525 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:32:49,526 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 39 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 37 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:49,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-01-18 15:32:49,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 160. [2022-01-18 15:32:49,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.2264150943396226) internal successors, (513), 159 states have internal predecessors, (513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 513 transitions. [2022-01-18 15:32:49,532 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 513 transitions. Word has length 15 [2022-01-18 15:32:49,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,532 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 513 transitions. [2022-01-18 15:32:49,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,532 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 513 transitions. [2022-01-18 15:32:49,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:49,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-01-18 15:32:49,533 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash -1704059387, now seen corresponding path program 1 times [2022-01-18 15:32:49,533 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144883532] [2022-01-18 15:32:49,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144883532] [2022-01-18 15:32:49,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144883532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,558 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:49,558 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635154026] [2022-01-18 15:32:49,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:49,559 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:49,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:49,559 INFO L87 Difference]: Start difference. First operand 160 states and 513 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,608 INFO L93 Difference]: Finished difference Result 304 states and 846 transitions. [2022-01-18 15:32:49,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,608 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:49,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,610 INFO L225 Difference]: With dead ends: 304 [2022-01-18 15:32:49,610 INFO L226 Difference]: Without dead ends: 282 [2022-01-18 15:32:49,610 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,610 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:49,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2022-01-18 15:32:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 160. [2022-01-18 15:32:49,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 159 states have (on average 3.1823899371069184) internal successors, (506), 159 states have internal predecessors, (506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 506 transitions. [2022-01-18 15:32:49,616 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 506 transitions. Word has length 16 [2022-01-18 15:32:49,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,616 INFO L470 AbstractCegarLoop]: Abstraction has 160 states and 506 transitions. [2022-01-18 15:32:49,616 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 506 transitions. [2022-01-18 15:32:49,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:49,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-01-18 15:32:49,617 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1929545917, now seen corresponding path program 2 times [2022-01-18 15:32:49,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [559057285] [2022-01-18 15:32:49,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,631 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,631 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,631 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [559057285] [2022-01-18 15:32:49,631 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [559057285] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,631 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,632 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:49,632 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068698533] [2022-01-18 15:32:49,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,632 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:49,632 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:49,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:49,633 INFO L87 Difference]: Start difference. First operand 160 states and 506 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,683 INFO L93 Difference]: Finished difference Result 298 states and 826 transitions. [2022-01-18 15:32:49,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,684 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:49,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,685 INFO L225 Difference]: With dead ends: 298 [2022-01-18 15:32:49,685 INFO L226 Difference]: Without dead ends: 276 [2022-01-18 15:32:49,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,686 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 42 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,687 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 26 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:49,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2022-01-18 15:32:49,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 153. [2022-01-18 15:32:49,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 152 states have (on average 3.223684210526316) internal successors, (490), 152 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 490 transitions. [2022-01-18 15:32:49,697 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 490 transitions. Word has length 16 [2022-01-18 15:32:49,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,697 INFO L470 AbstractCegarLoop]: Abstraction has 153 states and 490 transitions. [2022-01-18 15:32:49,698 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 490 transitions. [2022-01-18 15:32:49,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:49,699 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,699 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,699 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-01-18 15:32:49,699 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1941528794, now seen corresponding path program 1 times [2022-01-18 15:32:49,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101807122] [2022-01-18 15:32:49,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,715 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101807122] [2022-01-18 15:32:49,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101807122] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,716 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:49,716 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710142265] [2022-01-18 15:32:49,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,716 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:49,716 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:49,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:49,717 INFO L87 Difference]: Start difference. First operand 153 states and 490 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,766 INFO L93 Difference]: Finished difference Result 260 states and 732 transitions. [2022-01-18 15:32:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,766 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,768 INFO L225 Difference]: With dead ends: 260 [2022-01-18 15:32:49,768 INFO L226 Difference]: Without dead ends: 235 [2022-01-18 15:32:49,768 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,768 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 35 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 21 SdHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 21 Invalid, 83 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2022-01-18 15:32:49,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 149. [2022-01-18 15:32:49,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 3.1621621621621623) internal successors, (468), 148 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 468 transitions. [2022-01-18 15:32:49,773 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 468 transitions. Word has length 16 [2022-01-18 15:32:49,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,773 INFO L470 AbstractCegarLoop]: Abstraction has 149 states and 468 transitions. [2022-01-18 15:32:49,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,773 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 468 transitions. [2022-01-18 15:32:49,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:49,774 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-01-18 15:32:49,774 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,774 INFO L85 PathProgramCache]: Analyzing trace with hash -2117348120, now seen corresponding path program 1 times [2022-01-18 15:32:49,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103012247] [2022-01-18 15:32:49,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103012247] [2022-01-18 15:32:49,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103012247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:49,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344041628] [2022-01-18 15:32:49,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:49,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:49,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:49,791 INFO L87 Difference]: Start difference. First operand 149 states and 468 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,841 INFO L93 Difference]: Finished difference Result 257 states and 726 transitions. [2022-01-18 15:32:49,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,841 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:49,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,842 INFO L225 Difference]: With dead ends: 257 [2022-01-18 15:32:49,842 INFO L226 Difference]: Without dead ends: 257 [2022-01-18 15:32:49,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,843 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 41 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 25 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:49,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-01-18 15:32:49,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 143. [2022-01-18 15:32:49,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 3.147887323943662) internal successors, (447), 142 states have internal predecessors, (447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 447 transitions. [2022-01-18 15:32:49,848 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 447 transitions. Word has length 16 [2022-01-18 15:32:49,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,848 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 447 transitions. [2022-01-18 15:32:49,848 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,848 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 447 transitions. [2022-01-18 15:32:49,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:49,849 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,849 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-01-18 15:32:49,849 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,850 INFO L85 PathProgramCache]: Analyzing trace with hash 1557952042, now seen corresponding path program 2 times [2022-01-18 15:32:49,850 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489470160] [2022-01-18 15:32:49,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,850 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,877 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489470160] [2022-01-18 15:32:49,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489470160] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:49,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141545532] [2022-01-18 15:32:49,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:49,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:49,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:49,879 INFO L87 Difference]: Start difference. First operand 143 states and 447 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:49,933 INFO L93 Difference]: Finished difference Result 237 states and 668 transitions. [2022-01-18 15:32:49,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:49,933 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:49,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:49,934 INFO L225 Difference]: With dead ends: 237 [2022-01-18 15:32:49,934 INFO L226 Difference]: Without dead ends: 218 [2022-01-18 15:32:49,935 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:49,935 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 29 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 27 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:49,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 27 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:49,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-01-18 15:32:49,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 139. [2022-01-18 15:32:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.1666666666666665) internal successors, (437), 138 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 437 transitions. [2022-01-18 15:32:49,940 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 437 transitions. Word has length 16 [2022-01-18 15:32:49,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:49,940 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 437 transitions. [2022-01-18 15:32:49,940 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:49,940 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 437 transitions. [2022-01-18 15:32:49,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:49,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:49,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:49,941 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-01-18 15:32:49,941 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:49,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:49,941 INFO L85 PathProgramCache]: Analyzing trace with hash 1220732619, now seen corresponding path program 3 times [2022-01-18 15:32:49,941 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:49,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1238343573] [2022-01-18 15:32:49,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:49,942 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:49,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:49,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:49,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:49,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1238343573] [2022-01-18 15:32:49,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1238343573] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:49,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:49,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:49,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827395157] [2022-01-18 15:32:49,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:49,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:49,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:49,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:49,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:49,958 INFO L87 Difference]: Start difference. First operand 139 states and 437 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:50,009 INFO L93 Difference]: Finished difference Result 236 states and 663 transitions. [2022-01-18 15:32:50,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 15:32:50,009 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:50,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:50,010 INFO L225 Difference]: With dead ends: 236 [2022-01-18 15:32:50,010 INFO L226 Difference]: Without dead ends: 214 [2022-01-18 15:32:50,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:50,011 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 36 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:50,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 19 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:50,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-01-18 15:32:50,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 139. [2022-01-18 15:32:50,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 139 states, 138 states have (on average 3.101449275362319) internal successors, (428), 138 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 428 transitions. [2022-01-18 15:32:50,016 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 428 transitions. Word has length 16 [2022-01-18 15:32:50,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:50,017 INFO L470 AbstractCegarLoop]: Abstraction has 139 states and 428 transitions. [2022-01-18 15:32:50,017 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,017 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 428 transitions. [2022-01-18 15:32:50,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:50,017 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:50,017 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:50,018 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-01-18 15:32:50,018 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:50,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:50,018 INFO L85 PathProgramCache]: Analyzing trace with hash -1404034676, now seen corresponding path program 2 times [2022-01-18 15:32:50,018 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:50,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286117344] [2022-01-18 15:32:50,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:50,019 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:50,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:50,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:50,037 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:50,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286117344] [2022-01-18 15:32:50,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286117344] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:50,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:50,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:50,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172559594] [2022-01-18 15:32:50,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:50,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:50,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:50,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:50,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:50,040 INFO L87 Difference]: Start difference. First operand 139 states and 428 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:50,084 INFO L93 Difference]: Finished difference Result 157 states and 457 transitions. [2022-01-18 15:32:50,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 15:32:50,084 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:50,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:50,085 INFO L225 Difference]: With dead ends: 157 [2022-01-18 15:32:50,085 INFO L226 Difference]: Without dead ends: 157 [2022-01-18 15:32:50,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:50,086 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 31 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:50,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 18 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:50,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-01-18 15:32:50,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 108. [2022-01-18 15:32:50,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.9345794392523366) internal successors, (314), 107 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 314 transitions. [2022-01-18 15:32:50,090 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 314 transitions. Word has length 16 [2022-01-18 15:32:50,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:50,091 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 314 transitions. [2022-01-18 15:32:50,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,091 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 314 transitions. [2022-01-18 15:32:50,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-01-18 15:32:50,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:50,091 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:50,092 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-01-18 15:32:50,092 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:50,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:50,092 INFO L85 PathProgramCache]: Analyzing trace with hash 80169455, now seen corresponding path program 4 times [2022-01-18 15:32:50,092 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:50,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625325144] [2022-01-18 15:32:50,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:50,093 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:50,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:50,116 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:50,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625325144] [2022-01-18 15:32:50,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625325144] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:50,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:50,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 15:32:50,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034848941] [2022-01-18 15:32:50,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:50,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 15:32:50,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:50,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 15:32:50,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 15:32:50,118 INFO L87 Difference]: Start difference. First operand 108 states and 314 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:50,154 INFO L93 Difference]: Finished difference Result 123 states and 338 transitions. [2022-01-18 15:32:50,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 15:32:50,154 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2022-01-18 15:32:50,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:50,155 INFO L225 Difference]: With dead ends: 123 [2022-01-18 15:32:50,155 INFO L226 Difference]: Without dead ends: 108 [2022-01-18 15:32:50,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 15:32:50,157 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 23 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:50,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 17 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 15:32:50,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-01-18 15:32:50,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 108. [2022-01-18 15:32:50,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 107 states have (on average 2.878504672897196) internal successors, (308), 107 states have internal predecessors, (308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 308 transitions. [2022-01-18 15:32:50,162 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 308 transitions. Word has length 16 [2022-01-18 15:32:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:50,162 INFO L470 AbstractCegarLoop]: Abstraction has 108 states and 308 transitions. [2022-01-18 15:32:50,162 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 308 transitions. [2022-01-18 15:32:50,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:50,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:50,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:50,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-01-18 15:32:50,163 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:50,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:50,164 INFO L85 PathProgramCache]: Analyzing trace with hash -1183091529, now seen corresponding path program 1 times [2022-01-18 15:32:50,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:50,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251188820] [2022-01-18 15:32:50,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:50,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:50,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:50,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:50,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251188820] [2022-01-18 15:32:50,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251188820] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:50,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:50,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:50,216 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290018665] [2022-01-18 15:32:50,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:50,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:50,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:50,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:50,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:50,217 INFO L87 Difference]: Start difference. First operand 108 states and 308 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:50,368 INFO L93 Difference]: Finished difference Result 265 states and 721 transitions. [2022-01-18 15:32:50,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:50,370 INFO L225 Difference]: With dead ends: 265 [2022-01-18 15:32:50,370 INFO L226 Difference]: Without dead ends: 250 [2022-01-18 15:32:50,370 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:50,370 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 76 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:50,371 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 67 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2022-01-18 15:32:50,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 141. [2022-01-18 15:32:50,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 140 states have (on average 2.7928571428571427) internal successors, (391), 140 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 391 transitions. [2022-01-18 15:32:50,376 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 391 transitions. Word has length 17 [2022-01-18 15:32:50,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:50,376 INFO L470 AbstractCegarLoop]: Abstraction has 141 states and 391 transitions. [2022-01-18 15:32:50,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,376 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 391 transitions. [2022-01-18 15:32:50,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:50,376 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:50,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:50,377 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-01-18 15:32:50,377 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:50,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:50,377 INFO L85 PathProgramCache]: Analyzing trace with hash 922093723, now seen corresponding path program 2 times [2022-01-18 15:32:50,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:50,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348187616] [2022-01-18 15:32:50,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:50,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:50,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:50,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:50,438 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:50,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348187616] [2022-01-18 15:32:50,438 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348187616] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:50,438 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:50,438 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:50,439 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116766485] [2022-01-18 15:32:50,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:50,439 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:50,439 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:50,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:50,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:50,439 INFO L87 Difference]: Start difference. First operand 141 states and 391 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:50,593 INFO L93 Difference]: Finished difference Result 298 states and 795 transitions. [2022-01-18 15:32:50,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:50,594 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:50,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:50,595 INFO L225 Difference]: With dead ends: 298 [2022-01-18 15:32:50,595 INFO L226 Difference]: Without dead ends: 283 [2022-01-18 15:32:50,595 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:50,596 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 81 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:50,596 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 65 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:50,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2022-01-18 15:32:50,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 150. [2022-01-18 15:32:50,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-01-18 15:32:50,601 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-01-18 15:32:50,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:50,601 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-01-18 15:32:50,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,601 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-01-18 15:32:50,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:50,602 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:50,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:50,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-01-18 15:32:50,602 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:50,603 INFO L85 PathProgramCache]: Analyzing trace with hash 944690271, now seen corresponding path program 3 times [2022-01-18 15:32:50,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:50,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443943923] [2022-01-18 15:32:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:50,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:50,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:50,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:50,663 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:50,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443943923] [2022-01-18 15:32:50,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443943923] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:50,663 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:50,663 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:50,663 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189373780] [2022-01-18 15:32:50,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:50,664 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:50,664 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:50,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:50,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:50,664 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:50,822 INFO L93 Difference]: Finished difference Result 281 states and 763 transitions. [2022-01-18 15:32:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:50,823 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:50,824 INFO L225 Difference]: With dead ends: 281 [2022-01-18 15:32:50,824 INFO L226 Difference]: Without dead ends: 266 [2022-01-18 15:32:50,825 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:50,825 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:50,825 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 68 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-01-18 15:32:50,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 150. [2022-01-18 15:32:50,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 150 states, 149 states have (on average 2.8053691275167787) internal successors, (418), 149 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 418 transitions. [2022-01-18 15:32:50,831 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 418 transitions. Word has length 17 [2022-01-18 15:32:50,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:50,831 INFO L470 AbstractCegarLoop]: Abstraction has 150 states and 418 transitions. [2022-01-18 15:32:50,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 418 transitions. [2022-01-18 15:32:50,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:50,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:50,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:50,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-01-18 15:32:50,832 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:50,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:50,833 INFO L85 PathProgramCache]: Analyzing trace with hash -1408578059, now seen corresponding path program 4 times [2022-01-18 15:32:50,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:50,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707825810] [2022-01-18 15:32:50,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:50,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:50,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:50,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:50,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707825810] [2022-01-18 15:32:50,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707825810] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:50,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:50,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:50,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904708341] [2022-01-18 15:32:50,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:50,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:50,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:50,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:50,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:50,887 INFO L87 Difference]: Start difference. First operand 150 states and 418 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:51,017 INFO L93 Difference]: Finished difference Result 289 states and 784 transitions. [2022-01-18 15:32:51,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:51,017 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:51,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:51,019 INFO L225 Difference]: With dead ends: 289 [2022-01-18 15:32:51,019 INFO L226 Difference]: Without dead ends: 274 [2022-01-18 15:32:51,019 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:51,021 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:51,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 63 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:51,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 274 states. [2022-01-18 15:32:51,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 274 to 159. [2022-01-18 15:32:51,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-01-18 15:32:51,028 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-01-18 15:32:51,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:51,028 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-01-18 15:32:51,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,028 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-01-18 15:32:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:51,029 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:51,029 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:51,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-01-18 15:32:51,029 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:51,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:51,030 INFO L85 PathProgramCache]: Analyzing trace with hash 386863921, now seen corresponding path program 5 times [2022-01-18 15:32:51,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:51,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1182822937] [2022-01-18 15:32:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:51,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:51,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:51,089 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:51,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:51,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1182822937] [2022-01-18 15:32:51,090 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1182822937] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:51,090 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:51,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:51,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519808266] [2022-01-18 15:32:51,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:51,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:51,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:51,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:51,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:51,093 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:51,267 INFO L93 Difference]: Finished difference Result 322 states and 859 transitions. [2022-01-18 15:32:51,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:51,267 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:51,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:51,268 INFO L225 Difference]: With dead ends: 322 [2022-01-18 15:32:51,268 INFO L226 Difference]: Without dead ends: 307 [2022-01-18 15:32:51,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:51,269 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:51,269 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 76 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:51,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-01-18 15:32:51,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 162. [2022-01-18 15:32:51,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 161 states have (on average 2.8322981366459627) internal successors, (456), 161 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 456 transitions. [2022-01-18 15:32:51,274 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 456 transitions. Word has length 17 [2022-01-18 15:32:51,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:51,274 INFO L470 AbstractCegarLoop]: Abstraction has 162 states and 456 transitions. [2022-01-18 15:32:51,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,274 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 456 transitions. [2022-01-18 15:32:51,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:51,275 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:51,275 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:51,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-01-18 15:32:51,275 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 409460469, now seen corresponding path program 6 times [2022-01-18 15:32:51,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:51,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749735976] [2022-01-18 15:32:51,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:51,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:51,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:51,323 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:51,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749735976] [2022-01-18 15:32:51,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749735976] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:51,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:51,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:51,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855006694] [2022-01-18 15:32:51,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:51,324 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:51,324 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:51,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:51,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:51,324 INFO L87 Difference]: Start difference. First operand 162 states and 456 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:51,481 INFO L93 Difference]: Finished difference Result 299 states and 814 transitions. [2022-01-18 15:32:51,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:51,481 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:51,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:51,483 INFO L225 Difference]: With dead ends: 299 [2022-01-18 15:32:51,483 INFO L226 Difference]: Without dead ends: 284 [2022-01-18 15:32:51,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:51,484 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:51,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 72 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:51,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2022-01-18 15:32:51,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 159. [2022-01-18 15:32:51,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 158 states have (on average 2.7974683544303796) internal successors, (442), 158 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 442 transitions. [2022-01-18 15:32:51,488 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 442 transitions. Word has length 17 [2022-01-18 15:32:51,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:51,488 INFO L470 AbstractCegarLoop]: Abstraction has 159 states and 442 transitions. [2022-01-18 15:32:51,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,489 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 442 transitions. [2022-01-18 15:32:51,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:51,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:51,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:51,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-01-18 15:32:51,489 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:51,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:51,490 INFO L85 PathProgramCache]: Analyzing trace with hash 868897657, now seen corresponding path program 7 times [2022-01-18 15:32:51,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:51,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286759189] [2022-01-18 15:32:51,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:51,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:51,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:51,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:51,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286759189] [2022-01-18 15:32:51,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286759189] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:51,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:51,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:51,536 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669925681] [2022-01-18 15:32:51,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:51,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:51,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:51,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:51,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:51,537 INFO L87 Difference]: Start difference. First operand 159 states and 442 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:51,677 INFO L93 Difference]: Finished difference Result 389 states and 1040 transitions. [2022-01-18 15:32:51,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:51,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:51,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:51,679 INFO L225 Difference]: With dead ends: 389 [2022-01-18 15:32:51,679 INFO L226 Difference]: Without dead ends: 374 [2022-01-18 15:32:51,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:51,679 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 87 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:51,680 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 74 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:51,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-01-18 15:32:51,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 166. [2022-01-18 15:32:51,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 2.8484848484848486) internal successors, (470), 165 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 470 transitions. [2022-01-18 15:32:51,685 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 470 transitions. Word has length 17 [2022-01-18 15:32:51,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:51,685 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 470 transitions. [2022-01-18 15:32:51,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,685 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 470 transitions. [2022-01-18 15:32:51,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:51,686 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:51,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:51,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-01-18 15:32:51,686 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:51,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:51,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1320884387, now seen corresponding path program 8 times [2022-01-18 15:32:51,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:51,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650199545] [2022-01-18 15:32:51,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:51,687 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:51,737 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:51,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650199545] [2022-01-18 15:32:51,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650199545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:51,737 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:51,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:51,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960295993] [2022-01-18 15:32:51,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:51,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:51,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:51,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:51,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:51,738 INFO L87 Difference]: Start difference. First operand 166 states and 470 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:51,874 INFO L93 Difference]: Finished difference Result 398 states and 1066 transitions. [2022-01-18 15:32:51,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:51,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:51,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:51,877 INFO L225 Difference]: With dead ends: 398 [2022-01-18 15:32:51,877 INFO L226 Difference]: Without dead ends: 383 [2022-01-18 15:32:51,877 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:51,877 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:51,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 69 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:51,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2022-01-18 15:32:51,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 169. [2022-01-18 15:32:51,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 168 states have (on average 2.880952380952381) internal successors, (484), 168 states have internal predecessors, (484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 484 transitions. [2022-01-18 15:32:51,882 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 484 transitions. Word has length 17 [2022-01-18 15:32:51,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:51,883 INFO L470 AbstractCegarLoop]: Abstraction has 169 states and 484 transitions. [2022-01-18 15:32:51,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:51,883 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 484 transitions. [2022-01-18 15:32:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:51,883 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:51,883 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:51,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-01-18 15:32:51,884 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:51,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1298287839, now seen corresponding path program 9 times [2022-01-18 15:32:51,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:51,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107432821] [2022-01-18 15:32:51,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:51,884 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:51,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:51,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:51,937 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:51,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107432821] [2022-01-18 15:32:51,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107432821] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:51,937 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:51,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:51,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082930627] [2022-01-18 15:32:51,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:51,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:51,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:51,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:51,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:51,938 INFO L87 Difference]: Start difference. First operand 169 states and 484 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:52,097 INFO L93 Difference]: Finished difference Result 405 states and 1082 transitions. [2022-01-18 15:32:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:52,098 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:52,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:52,100 INFO L225 Difference]: With dead ends: 405 [2022-01-18 15:32:52,100 INFO L226 Difference]: Without dead ends: 390 [2022-01-18 15:32:52,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:52,100 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:52,100 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 75 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-18 15:32:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 161. [2022-01-18 15:32:52,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 160 states have (on average 2.825) internal successors, (452), 160 states have internal predecessors, (452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 452 transitions. [2022-01-18 15:32:52,105 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 452 transitions. Word has length 17 [2022-01-18 15:32:52,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:52,105 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 452 transitions. [2022-01-18 15:32:52,106 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 452 transitions. [2022-01-18 15:32:52,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:52,106 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:52,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:52,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-01-18 15:32:52,106 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:52,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:52,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1429044949, now seen corresponding path program 10 times [2022-01-18 15:32:52,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:52,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561477631] [2022-01-18 15:32:52,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:52,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:52,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:52,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:52,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561477631] [2022-01-18 15:32:52,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561477631] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:52,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:52,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:52,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703579207] [2022-01-18 15:32:52,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:52,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:52,159 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:52,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:52,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:52,159 INFO L87 Difference]: Start difference. First operand 161 states and 452 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:52,292 INFO L93 Difference]: Finished difference Result 340 states and 918 transitions. [2022-01-18 15:32:52,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:52,293 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:52,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:52,294 INFO L225 Difference]: With dead ends: 340 [2022-01-18 15:32:52,294 INFO L226 Difference]: Without dead ends: 325 [2022-01-18 15:32:52,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:52,295 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 199 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 199 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:52,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 64 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 199 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:52,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-18 15:32:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 165. [2022-01-18 15:32:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 2.841463414634146) internal successors, (466), 164 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 466 transitions. [2022-01-18 15:32:52,300 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 466 transitions. Word has length 17 [2022-01-18 15:32:52,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:52,300 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 466 transitions. [2022-01-18 15:32:52,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,300 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 466 transitions. [2022-01-18 15:32:52,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:52,301 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:52,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:52,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-01-18 15:32:52,301 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:52,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:52,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1020348439, now seen corresponding path program 11 times [2022-01-18 15:32:52,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:52,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19491707] [2022-01-18 15:32:52,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:52,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:52,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:52,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:52,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19491707] [2022-01-18 15:32:52,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19491707] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:52,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:52,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:52,352 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645271448] [2022-01-18 15:32:52,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:52,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:52,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:52,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:52,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:52,353 INFO L87 Difference]: Start difference. First operand 165 states and 466 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:52,507 INFO L93 Difference]: Finished difference Result 335 states and 909 transitions. [2022-01-18 15:32:52,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:52,507 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:52,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:52,509 INFO L225 Difference]: With dead ends: 335 [2022-01-18 15:32:52,509 INFO L226 Difference]: Without dead ends: 320 [2022-01-18 15:32:52,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:52,510 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:52,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 72 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:52,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2022-01-18 15:32:52,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 171. [2022-01-18 15:32:52,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-01-18 15:32:52,515 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-01-18 15:32:52,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:52,515 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-01-18 15:32:52,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,515 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-01-18 15:32:52,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:52,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:52,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:52,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-01-18 15:32:52,516 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:52,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:52,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1984237037, now seen corresponding path program 12 times [2022-01-18 15:32:52,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:52,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895014156] [2022-01-18 15:32:52,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:52,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:52,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:52,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:52,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895014156] [2022-01-18 15:32:52,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895014156] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:52,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:52,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:52,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349354112] [2022-01-18 15:32:52,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:52,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:52,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:52,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:52,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:52,568 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:52,698 INFO L93 Difference]: Finished difference Result 318 states and 879 transitions. [2022-01-18 15:32:52,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:52,699 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:52,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:52,700 INFO L225 Difference]: With dead ends: 318 [2022-01-18 15:32:52,701 INFO L226 Difference]: Without dead ends: 303 [2022-01-18 15:32:52,701 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:52,701 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 58 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:52,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 69 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:52,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303 states. [2022-01-18 15:32:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303 to 171. [2022-01-18 15:32:52,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 170 states have (on average 2.8411764705882354) internal successors, (483), 170 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 483 transitions. [2022-01-18 15:32:52,706 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 483 transitions. Word has length 17 [2022-01-18 15:32:52,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:52,706 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 483 transitions. [2022-01-18 15:32:52,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,707 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 483 transitions. [2022-01-18 15:32:52,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:52,707 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:52,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:52,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-01-18 15:32:52,707 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash -1369703401, now seen corresponding path program 13 times [2022-01-18 15:32:52,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:52,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891823700] [2022-01-18 15:32:52,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:52,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:52,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:52,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:52,760 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:52,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891823700] [2022-01-18 15:32:52,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891823700] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:52,760 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:52,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:52,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152640733] [2022-01-18 15:32:52,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:52,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:52,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:52,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:52,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:52,762 INFO L87 Difference]: Start difference. First operand 171 states and 483 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:52,910 INFO L93 Difference]: Finished difference Result 385 states and 1046 transitions. [2022-01-18 15:32:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:52,910 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:52,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:52,912 INFO L225 Difference]: With dead ends: 385 [2022-01-18 15:32:52,912 INFO L226 Difference]: Without dead ends: 370 [2022-01-18 15:32:52,912 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:52,912 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:52,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 75 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:52,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2022-01-18 15:32:52,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 174. [2022-01-18 15:32:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 15:32:52,918 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 15:32:52,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:52,918 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 15:32:52,918 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:52,918 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 15:32:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:52,919 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:52,919 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:52,919 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-01-18 15:32:52,919 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:52,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:52,919 INFO L85 PathProgramCache]: Analyzing trace with hash 615247419, now seen corresponding path program 14 times [2022-01-18 15:32:52,919 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:52,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690337630] [2022-01-18 15:32:52,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:52,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:52,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:52,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:52,980 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:52,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690337630] [2022-01-18 15:32:52,981 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690337630] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:52,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:52,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:52,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000056762] [2022-01-18 15:32:52,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:52,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:52,981 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:52,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:52,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:52,982 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:53,112 INFO L93 Difference]: Finished difference Result 383 states and 1039 transitions. [2022-01-18 15:32:53,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:53,112 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:53,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:53,114 INFO L225 Difference]: With dead ends: 383 [2022-01-18 15:32:53,114 INFO L226 Difference]: Without dead ends: 368 [2022-01-18 15:32:53,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:53,115 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 79 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:53,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 67 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:53,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-18 15:32:53,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 174. [2022-01-18 15:32:53,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 15:32:53,121 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 15:32:53,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:53,121 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 15:32:53,121 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,121 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 15:32:53,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:53,122 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:53,122 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:53,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-01-18 15:32:53,122 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:53,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:53,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1736644371, now seen corresponding path program 15 times [2022-01-18 15:32:53,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:53,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798603724] [2022-01-18 15:32:53,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:53,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:53,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:53,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:53,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798603724] [2022-01-18 15:32:53,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798603724] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:53,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:53,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:53,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074382890] [2022-01-18 15:32:53,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:53,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:53,187 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:53,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:53,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:53,188 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:53,323 INFO L93 Difference]: Finished difference Result 392 states and 1055 transitions. [2022-01-18 15:32:53,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:53,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:53,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:53,326 INFO L225 Difference]: With dead ends: 392 [2022-01-18 15:32:53,326 INFO L226 Difference]: Without dead ends: 377 [2022-01-18 15:32:53,326 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:53,327 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:53,327 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 74 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:53,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-01-18 15:32:53,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 177. [2022-01-18 15:32:53,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.909090909090909) internal successors, (512), 176 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 512 transitions. [2022-01-18 15:32:53,333 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 512 transitions. Word has length 17 [2022-01-18 15:32:53,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:53,333 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 512 transitions. [2022-01-18 15:32:53,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,333 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 512 transitions. [2022-01-18 15:32:53,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:53,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:53,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:53,334 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-01-18 15:32:53,334 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:53,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:53,334 INFO L85 PathProgramCache]: Analyzing trace with hash 776503703, now seen corresponding path program 16 times [2022-01-18 15:32:53,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:53,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556681581] [2022-01-18 15:32:53,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:53,335 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:53,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:53,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:53,388 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:53,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556681581] [2022-01-18 15:32:53,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556681581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:53,389 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:53,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:53,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061657858] [2022-01-18 15:32:53,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:53,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:53,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:53,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:53,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:53,390 INFO L87 Difference]: Start difference. First operand 177 states and 512 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:53,507 INFO L93 Difference]: Finished difference Result 376 states and 1032 transitions. [2022-01-18 15:32:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:53,508 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:53,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:53,509 INFO L225 Difference]: With dead ends: 376 [2022-01-18 15:32:53,509 INFO L226 Difference]: Without dead ends: 361 [2022-01-18 15:32:53,509 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:53,509 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 75 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:53,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 71 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 218 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:53,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2022-01-18 15:32:53,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 174. [2022-01-18 15:32:53,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 15:32:53,515 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 15:32:53,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:53,515 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 15:32:53,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,515 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 15:32:53,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:53,516 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:53,516 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:53,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-01-18 15:32:53,516 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:53,517 INFO L85 PathProgramCache]: Analyzing trace with hash -520856585, now seen corresponding path program 17 times [2022-01-18 15:32:53,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:53,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907113904] [2022-01-18 15:32:53,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:53,517 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:53,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:53,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907113904] [2022-01-18 15:32:53,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907113904] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:53,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:53,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:53,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157709615] [2022-01-18 15:32:53,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:53,568 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:53,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:53,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:53,569 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:53,703 INFO L93 Difference]: Finished difference Result 364 states and 991 transitions. [2022-01-18 15:32:53,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:53,704 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:53,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:53,705 INFO L225 Difference]: With dead ends: 364 [2022-01-18 15:32:53,705 INFO L226 Difference]: Without dead ends: 349 [2022-01-18 15:32:53,705 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:53,705 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:53,706 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 74 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:53,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2022-01-18 15:32:53,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 176. [2022-01-18 15:32:53,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 2.8971428571428572) internal successors, (507), 175 states have internal predecessors, (507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 507 transitions. [2022-01-18 15:32:53,710 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 507 transitions. Word has length 17 [2022-01-18 15:32:53,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:53,711 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 507 transitions. [2022-01-18 15:32:53,711 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,711 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 507 transitions. [2022-01-18 15:32:53,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:53,711 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:53,711 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:53,711 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-01-18 15:32:53,712 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:53,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:53,712 INFO L85 PathProgramCache]: Analyzing trace with hash 826274171, now seen corresponding path program 18 times [2022-01-18 15:32:53,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:53,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623481132] [2022-01-18 15:32:53,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:53,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:53,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:53,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:53,774 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:53,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623481132] [2022-01-18 15:32:53,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623481132] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:53,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:53,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:53,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570778415] [2022-01-18 15:32:53,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:53,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:53,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:53,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:53,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:53,775 INFO L87 Difference]: Start difference. First operand 176 states and 507 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:53,902 INFO L93 Difference]: Finished difference Result 343 states and 953 transitions. [2022-01-18 15:32:53,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:53,902 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:53,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:53,903 INFO L225 Difference]: With dead ends: 343 [2022-01-18 15:32:53,904 INFO L226 Difference]: Without dead ends: 328 [2022-01-18 15:32:53,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:53,904 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 63 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:53,904 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 70 Invalid, 206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:53,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2022-01-18 15:32:53,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 174. [2022-01-18 15:32:53,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 173 states have (on average 2.878612716763006) internal successors, (498), 173 states have internal predecessors, (498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 498 transitions. [2022-01-18 15:32:53,910 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 498 transitions. Word has length 17 [2022-01-18 15:32:53,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:53,910 INFO L470 AbstractCegarLoop]: Abstraction has 174 states and 498 transitions. [2022-01-18 15:32:53,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:53,911 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 498 transitions. [2022-01-18 15:32:53,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:53,911 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:53,911 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:53,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-01-18 15:32:53,912 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:53,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:53,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1248454179, now seen corresponding path program 19 times [2022-01-18 15:32:53,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:53,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711886461] [2022-01-18 15:32:53,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:53,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:53,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:53,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:53,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:53,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711886461] [2022-01-18 15:32:53,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711886461] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:53,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:53,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:53,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682094041] [2022-01-18 15:32:53,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:53,956 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:53,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:53,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:53,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:53,957 INFO L87 Difference]: Start difference. First operand 174 states and 498 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:54,114 INFO L93 Difference]: Finished difference Result 360 states and 983 transitions. [2022-01-18 15:32:54,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:54,114 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:54,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:54,116 INFO L225 Difference]: With dead ends: 360 [2022-01-18 15:32:54,116 INFO L226 Difference]: Without dead ends: 345 [2022-01-18 15:32:54,116 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:54,117 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:54,117 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 71 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:54,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 345 states. [2022-01-18 15:32:54,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 345 to 177. [2022-01-18 15:32:54,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 15:32:54,122 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 15:32:54,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:54,123 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 15:32:54,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,123 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 15:32:54,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:54,123 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:54,124 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:54,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-01-18 15:32:54,124 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:54,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:54,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1971453827, now seen corresponding path program 20 times [2022-01-18 15:32:54,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:54,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620372365] [2022-01-18 15:32:54,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:54,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:54,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:54,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:54,184 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:54,184 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620372365] [2022-01-18 15:32:54,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [620372365] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:54,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:54,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:54,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34741008] [2022-01-18 15:32:54,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:54,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:54,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:54,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:54,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:54,186 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:54,322 INFO L93 Difference]: Finished difference Result 377 states and 1017 transitions. [2022-01-18 15:32:54,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:54,322 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:54,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:54,324 INFO L225 Difference]: With dead ends: 377 [2022-01-18 15:32:54,324 INFO L226 Difference]: Without dead ends: 362 [2022-01-18 15:32:54,325 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:54,325 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 97 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:54,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 67 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:54,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-18 15:32:54,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 179. [2022-01-18 15:32:54,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9157303370786516) internal successors, (519), 178 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 519 transitions. [2022-01-18 15:32:54,332 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 519 transitions. Word has length 17 [2022-01-18 15:32:54,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:54,332 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 519 transitions. [2022-01-18 15:32:54,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,332 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 519 transitions. [2022-01-18 15:32:54,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:54,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:54,333 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:54,333 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-01-18 15:32:54,333 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:54,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:54,333 INFO L85 PathProgramCache]: Analyzing trace with hash 13496993, now seen corresponding path program 21 times [2022-01-18 15:32:54,334 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:54,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945424283] [2022-01-18 15:32:54,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:54,334 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:54,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:54,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945424283] [2022-01-18 15:32:54,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945424283] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:54,395 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:54,395 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:54,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649573873] [2022-01-18 15:32:54,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:54,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:54,396 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:54,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:54,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:54,396 INFO L87 Difference]: Start difference. First operand 179 states and 519 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:54,536 INFO L93 Difference]: Finished difference Result 354 states and 972 transitions. [2022-01-18 15:32:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:54,536 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:54,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:54,538 INFO L225 Difference]: With dead ends: 354 [2022-01-18 15:32:54,538 INFO L226 Difference]: Without dead ends: 339 [2022-01-18 15:32:54,538 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:54,538 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 77 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:54,539 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 64 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:54,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-18 15:32:54,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 177. [2022-01-18 15:32:54,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 15:32:54,544 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 15:32:54,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:54,544 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 15:32:54,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,544 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 15:32:54,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:54,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:54,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:54,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 15:32:54,545 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:54,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:54,546 INFO L85 PathProgramCache]: Analyzing trace with hash 559046241, now seen corresponding path program 22 times [2022-01-18 15:32:54,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:54,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189115196] [2022-01-18 15:32:54,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:54,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:54,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:54,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:54,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:54,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189115196] [2022-01-18 15:32:54,601 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189115196] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:54,601 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:54,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:54,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009800] [2022-01-18 15:32:54,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:54,601 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:54,601 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:54,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:54,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:54,602 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:54,744 INFO L93 Difference]: Finished difference Result 409 states and 1106 transitions. [2022-01-18 15:32:54,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:54,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:54,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:54,747 INFO L225 Difference]: With dead ends: 409 [2022-01-18 15:32:54,747 INFO L226 Difference]: Without dead ends: 394 [2022-01-18 15:32:54,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:54,748 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:54,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 79 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:54,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-18 15:32:54,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 180. [2022-01-18 15:32:54,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.910614525139665) internal successors, (521), 179 states have internal predecessors, (521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 521 transitions. [2022-01-18 15:32:54,754 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 521 transitions. Word has length 17 [2022-01-18 15:32:54,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:54,755 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 521 transitions. [2022-01-18 15:32:54,755 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,755 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 521 transitions. [2022-01-18 15:32:54,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:54,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:54,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:54,756 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-01-18 15:32:54,756 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:54,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:54,756 INFO L85 PathProgramCache]: Analyzing trace with hash 1954405597, now seen corresponding path program 23 times [2022-01-18 15:32:54,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:54,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736001313] [2022-01-18 15:32:54,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:54,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:54,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:54,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:54,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736001313] [2022-01-18 15:32:54,818 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736001313] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:54,818 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:54,818 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:54,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246193424] [2022-01-18 15:32:54,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:54,819 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:54,819 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:54,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:54,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:54,819 INFO L87 Difference]: Start difference. First operand 180 states and 521 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:54,947 INFO L93 Difference]: Finished difference Result 407 states and 1110 transitions. [2022-01-18 15:32:54,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:54,948 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:54,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:54,949 INFO L225 Difference]: With dead ends: 407 [2022-01-18 15:32:54,950 INFO L226 Difference]: Without dead ends: 392 [2022-01-18 15:32:54,950 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:54,950 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 211 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 211 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:54,950 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 72 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 211 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:54,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 392 states. [2022-01-18 15:32:54,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 392 to 183. [2022-01-18 15:32:54,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.9395604395604398) internal successors, (535), 182 states have internal predecessors, (535), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 535 transitions. [2022-01-18 15:32:54,956 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 535 transitions. Word has length 17 [2022-01-18 15:32:54,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:54,956 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 535 transitions. [2022-01-18 15:32:54,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:54,956 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 535 transitions. [2022-01-18 15:32:54,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:54,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:54,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:54,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-01-18 15:32:54,957 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:54,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:54,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1977002145, now seen corresponding path program 24 times [2022-01-18 15:32:54,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:54,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018598977] [2022-01-18 15:32:54,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:54,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:54,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:55,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:55,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:55,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018598977] [2022-01-18 15:32:55,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018598977] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:55,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:55,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:55,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41884099] [2022-01-18 15:32:55,005 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:55,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:55,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:55,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:55,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:55,006 INFO L87 Difference]: Start difference. First operand 183 states and 535 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:55,154 INFO L93 Difference]: Finished difference Result 384 states and 1065 transitions. [2022-01-18 15:32:55,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:55,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:55,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:55,156 INFO L225 Difference]: With dead ends: 384 [2022-01-18 15:32:55,156 INFO L226 Difference]: Without dead ends: 369 [2022-01-18 15:32:55,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:55,157 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:55,157 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 70 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:55,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-18 15:32:55,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 177. [2022-01-18 15:32:55,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 15:32:55,163 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 15:32:55,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:55,163 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 15:32:55,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,163 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 15:32:55,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:55,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:55,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:55,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-01-18 15:32:55,164 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:55,164 INFO L85 PathProgramCache]: Analyzing trace with hash 812835265, now seen corresponding path program 25 times [2022-01-18 15:32:55,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:55,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504906619] [2022-01-18 15:32:55,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:55,165 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:55,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:55,215 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:55,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504906619] [2022-01-18 15:32:55,215 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504906619] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:55,215 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:55,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:55,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058877524] [2022-01-18 15:32:55,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:55,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:55,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:55,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:55,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:55,216 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:55,345 INFO L93 Difference]: Finished difference Result 403 states and 1103 transitions. [2022-01-18 15:32:55,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:55,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:55,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:55,347 INFO L225 Difference]: With dead ends: 403 [2022-01-18 15:32:55,347 INFO L226 Difference]: Without dead ends: 388 [2022-01-18 15:32:55,347 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:55,348 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:55,348 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:55,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2022-01-18 15:32:55,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 180. [2022-01-18 15:32:55,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-01-18 15:32:55,353 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-01-18 15:32:55,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:55,353 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-01-18 15:32:55,353 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,353 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-01-18 15:32:55,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:55,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:55,354 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:55,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2022-01-18 15:32:55,354 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:55,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:55,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1497181211, now seen corresponding path program 26 times [2022-01-18 15:32:55,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:55,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973734818] [2022-01-18 15:32:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:55,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:55,399 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:55,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:55,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973734818] [2022-01-18 15:32:55,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973734818] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:55,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:55,400 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:55,400 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589457657] [2022-01-18 15:32:55,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:55,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:55,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:55,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:55,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:55,400 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:55,525 INFO L93 Difference]: Finished difference Result 401 states and 1096 transitions. [2022-01-18 15:32:55,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:55,525 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:55,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:55,526 INFO L225 Difference]: With dead ends: 401 [2022-01-18 15:32:55,526 INFO L226 Difference]: Without dead ends: 386 [2022-01-18 15:32:55,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:55,527 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 80 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:55,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 76 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:55,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2022-01-18 15:32:55,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 178. [2022-01-18 15:32:55,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-01-18 15:32:55,532 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-01-18 15:32:55,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:55,532 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-01-18 15:32:55,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,532 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-01-18 15:32:55,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:55,533 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:55,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:55,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2022-01-18 15:32:55,533 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:55,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:55,534 INFO L85 PathProgramCache]: Analyzing trace with hash -375784259, now seen corresponding path program 27 times [2022-01-18 15:32:55,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:55,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170449883] [2022-01-18 15:32:55,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:55,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:55,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:55,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:55,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:55,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170449883] [2022-01-18 15:32:55,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170449883] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:55,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:55,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:55,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476458732] [2022-01-18 15:32:55,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:55,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:55,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:55,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:55,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:55,586 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:55,701 INFO L93 Difference]: Finished difference Result 395 states and 1075 transitions. [2022-01-18 15:32:55,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:55,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:55,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:55,703 INFO L225 Difference]: With dead ends: 395 [2022-01-18 15:32:55,703 INFO L226 Difference]: Without dead ends: 380 [2022-01-18 15:32:55,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:55,704 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:55,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 78 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:55,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-01-18 15:32:55,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 181. [2022-01-18 15:32:55,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.9444444444444446) internal successors, (530), 180 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 530 transitions. [2022-01-18 15:32:55,708 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 530 transitions. Word has length 17 [2022-01-18 15:32:55,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:55,708 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 530 transitions. [2022-01-18 15:32:55,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,708 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 530 transitions. [2022-01-18 15:32:55,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:55,709 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:55,709 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:55,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2022-01-18 15:32:55,709 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:55,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:55,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1335924927, now seen corresponding path program 28 times [2022-01-18 15:32:55,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:55,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445248023] [2022-01-18 15:32:55,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:55,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:55,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:55,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:55,765 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:55,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445248023] [2022-01-18 15:32:55,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445248023] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:55,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:55,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:55,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327692218] [2022-01-18 15:32:55,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:55,765 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:55,765 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:55,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:55,766 INFO L87 Difference]: Start difference. First operand 181 states and 530 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:55,895 INFO L93 Difference]: Finished difference Result 379 states and 1052 transitions. [2022-01-18 15:32:55,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:55,898 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:55,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:55,899 INFO L225 Difference]: With dead ends: 379 [2022-01-18 15:32:55,899 INFO L226 Difference]: Without dead ends: 364 [2022-01-18 15:32:55,899 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:55,900 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:55,900 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 79 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:55,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-01-18 15:32:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 178. [2022-01-18 15:32:55,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 177 states have (on average 2.9152542372881354) internal successors, (516), 177 states have internal predecessors, (516), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 516 transitions. [2022-01-18 15:32:55,905 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 516 transitions. Word has length 17 [2022-01-18 15:32:55,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:55,905 INFO L470 AbstractCegarLoop]: Abstraction has 178 states and 516 transitions. [2022-01-18 15:32:55,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 516 transitions. [2022-01-18 15:32:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:55,906 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:55,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:55,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2022-01-18 15:32:55,906 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1661682081, now seen corresponding path program 29 times [2022-01-18 15:32:55,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:55,906 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1556702495] [2022-01-18 15:32:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:55,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:55,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:55,960 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:55,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1556702495] [2022-01-18 15:32:55,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1556702495] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:55,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:55,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:55,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280440963] [2022-01-18 15:32:55,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:55,961 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:55,961 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:55,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:55,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:55,961 INFO L87 Difference]: Start difference. First operand 178 states and 516 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:56,092 INFO L93 Difference]: Finished difference Result 363 states and 1003 transitions. [2022-01-18 15:32:56,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:56,092 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:56,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:56,093 INFO L225 Difference]: With dead ends: 363 [2022-01-18 15:32:56,093 INFO L226 Difference]: Without dead ends: 348 [2022-01-18 15:32:56,093 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:56,093 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:56,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 74 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:56,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-01-18 15:32:56,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 180. [2022-01-18 15:32:56,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 179 states have (on average 2.9329608938547485) internal successors, (525), 179 states have internal predecessors, (525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 525 transitions. [2022-01-18 15:32:56,098 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 525 transitions. Word has length 17 [2022-01-18 15:32:56,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:56,098 INFO L470 AbstractCegarLoop]: Abstraction has 180 states and 525 transitions. [2022-01-18 15:32:56,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,098 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 525 transitions. [2022-01-18 15:32:56,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:56,099 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:56,099 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:56,099 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2022-01-18 15:32:56,099 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:56,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:56,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1286154459, now seen corresponding path program 30 times [2022-01-18 15:32:56,100 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:56,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019458981] [2022-01-18 15:32:56,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:56,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:56,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:56,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:56,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019458981] [2022-01-18 15:32:56,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019458981] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:56,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:56,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:56,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287373666] [2022-01-18 15:32:56,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:56,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:56,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:56,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:56,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:56,158 INFO L87 Difference]: Start difference. First operand 180 states and 525 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:56,295 INFO L93 Difference]: Finished difference Result 342 states and 965 transitions. [2022-01-18 15:32:56,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:56,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:56,296 INFO L225 Difference]: With dead ends: 342 [2022-01-18 15:32:56,296 INFO L226 Difference]: Without dead ends: 327 [2022-01-18 15:32:56,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:56,296 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 52 mSDsluCounter, 147 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:56,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 78 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:56,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-01-18 15:32:56,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 177. [2022-01-18 15:32:56,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 176 states have (on average 2.897727272727273) internal successors, (510), 176 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 510 transitions. [2022-01-18 15:32:56,301 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 510 transitions. Word has length 17 [2022-01-18 15:32:56,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:56,301 INFO L470 AbstractCegarLoop]: Abstraction has 177 states and 510 transitions. [2022-01-18 15:32:56,301 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,301 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 510 transitions. [2022-01-18 15:32:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:56,302 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:56,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:56,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2022-01-18 15:32:56,302 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash -545211245, now seen corresponding path program 31 times [2022-01-18 15:32:56,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119174549] [2022-01-18 15:32:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:56,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:56,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:56,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:56,343 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:56,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119174549] [2022-01-18 15:32:56,343 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119174549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:56,343 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:56,343 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:56,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607752656] [2022-01-18 15:32:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:56,344 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:56,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:56,344 INFO L87 Difference]: Start difference. First operand 177 states and 510 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:56,482 INFO L93 Difference]: Finished difference Result 377 states and 1036 transitions. [2022-01-18 15:32:56,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:56,483 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:56,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:56,483 INFO L225 Difference]: With dead ends: 377 [2022-01-18 15:32:56,483 INFO L226 Difference]: Without dead ends: 362 [2022-01-18 15:32:56,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:56,484 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 73 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:56,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 76 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:56,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-01-18 15:32:56,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 186. [2022-01-18 15:32:56,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 185 states have (on average 2.9513513513513514) internal successors, (546), 185 states have internal predecessors, (546), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 546 transitions. [2022-01-18 15:32:56,489 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 546 transitions. Word has length 17 [2022-01-18 15:32:56,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:56,489 INFO L470 AbstractCegarLoop]: Abstraction has 186 states and 546 transitions. [2022-01-18 15:32:56,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,489 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 546 transitions. [2022-01-18 15:32:56,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:56,490 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:56,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:56,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2022-01-18 15:32:56,490 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:56,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:56,491 INFO L85 PathProgramCache]: Analyzing trace with hash 1559974007, now seen corresponding path program 32 times [2022-01-18 15:32:56,491 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:56,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426831958] [2022-01-18 15:32:56,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:56,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:56,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:56,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:56,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:56,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426831958] [2022-01-18 15:32:56,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426831958] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:56,536 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:56,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:56,537 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161962631] [2022-01-18 15:32:56,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:56,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:56,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:56,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:56,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:56,537 INFO L87 Difference]: Start difference. First operand 186 states and 546 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:56,670 INFO L93 Difference]: Finished difference Result 386 states and 1062 transitions. [2022-01-18 15:32:56,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:56,670 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:56,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:56,671 INFO L225 Difference]: With dead ends: 386 [2022-01-18 15:32:56,671 INFO L226 Difference]: Without dead ends: 371 [2022-01-18 15:32:56,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:56,671 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:56,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 74 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:56,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-18 15:32:56,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 189. [2022-01-18 15:32:56,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.978723404255319) internal successors, (560), 188 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 560 transitions. [2022-01-18 15:32:56,676 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 560 transitions. Word has length 17 [2022-01-18 15:32:56,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:56,676 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 560 transitions. [2022-01-18 15:32:56,676 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,676 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 560 transitions. [2022-01-18 15:32:56,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:56,677 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:56,677 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:56,677 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2022-01-18 15:32:56,677 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:56,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:56,678 INFO L85 PathProgramCache]: Analyzing trace with hash 1582570555, now seen corresponding path program 33 times [2022-01-18 15:32:56,678 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:56,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225330150] [2022-01-18 15:32:56,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:56,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:56,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:56,725 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:56,725 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225330150] [2022-01-18 15:32:56,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225330150] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:56,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:56,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:56,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102326051] [2022-01-18 15:32:56,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:56,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:56,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:56,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:56,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:56,726 INFO L87 Difference]: Start difference. First operand 189 states and 560 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:56,853 INFO L93 Difference]: Finished difference Result 393 states and 1078 transitions. [2022-01-18 15:32:56,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:56,853 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:56,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:56,854 INFO L225 Difference]: With dead ends: 393 [2022-01-18 15:32:56,854 INFO L226 Difference]: Without dead ends: 378 [2022-01-18 15:32:56,854 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:56,857 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:56,857 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:56,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-18 15:32:56,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 181. [2022-01-18 15:32:56,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-01-18 15:32:56,862 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-01-18 15:32:56,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:56,862 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-01-18 15:32:56,862 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:56,862 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-01-18 15:32:56,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:56,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:56,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:56,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2022-01-18 15:32:56,863 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:56,863 INFO L85 PathProgramCache]: Analyzing trace with hash 14936047, now seen corresponding path program 34 times [2022-01-18 15:32:56,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:56,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93059046] [2022-01-18 15:32:56,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:56,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:56,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:56,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:56,903 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:56,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93059046] [2022-01-18 15:32:56,903 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93059046] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:56,904 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:56,904 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:56,904 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930044014] [2022-01-18 15:32:56,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:56,904 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:56,904 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:56,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:56,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:56,905 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:57,035 INFO L93 Difference]: Finished difference Result 438 states and 1184 transitions. [2022-01-18 15:32:57,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:57,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:57,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:57,036 INFO L225 Difference]: With dead ends: 438 [2022-01-18 15:32:57,036 INFO L226 Difference]: Without dead ends: 423 [2022-01-18 15:32:57,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:57,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 85 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:57,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 78 Invalid, 249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:57,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2022-01-18 15:32:57,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 185. [2022-01-18 15:32:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9456521739130435) internal successors, (542), 184 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 542 transitions. [2022-01-18 15:32:57,051 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 542 transitions. Word has length 17 [2022-01-18 15:32:57,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:57,051 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 542 transitions. [2022-01-18 15:32:57,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,051 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 542 transitions. [2022-01-18 15:32:57,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:57,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:57,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:57,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2022-01-18 15:32:57,052 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:57,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:57,053 INFO L85 PathProgramCache]: Analyzing trace with hash -393760463, now seen corresponding path program 35 times [2022-01-18 15:32:57,053 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:57,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209334226] [2022-01-18 15:32:57,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:57,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:57,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:57,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:57,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209334226] [2022-01-18 15:32:57,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209334226] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:57,097 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:57,097 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:57,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778682622] [2022-01-18 15:32:57,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:57,098 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:57,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:57,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:57,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:57,098 INFO L87 Difference]: Start difference. First operand 185 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:57,228 INFO L93 Difference]: Finished difference Result 433 states and 1175 transitions. [2022-01-18 15:32:57,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:57,228 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:57,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:57,229 INFO L225 Difference]: With dead ends: 433 [2022-01-18 15:32:57,229 INFO L226 Difference]: Without dead ends: 418 [2022-01-18 15:32:57,230 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:57,230 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 86 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:57,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 75 Invalid, 252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:57,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2022-01-18 15:32:57,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 187. [2022-01-18 15:32:57,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.9623655913978495) internal successors, (551), 186 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 551 transitions. [2022-01-18 15:32:57,235 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 551 transitions. Word has length 17 [2022-01-18 15:32:57,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:57,235 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 551 transitions. [2022-01-18 15:32:57,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,235 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 551 transitions. [2022-01-18 15:32:57,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:57,236 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:57,236 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:57,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2022-01-18 15:32:57,236 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:57,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:57,236 INFO L85 PathProgramCache]: Analyzing trace with hash 896621357, now seen corresponding path program 36 times [2022-01-18 15:32:57,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:57,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390612858] [2022-01-18 15:32:57,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:57,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:57,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:57,281 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:57,282 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:57,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390612858] [2022-01-18 15:32:57,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390612858] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:57,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:57,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:57,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965259022] [2022-01-18 15:32:57,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:57,282 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:57,282 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:57,282 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:57,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:57,282 INFO L87 Difference]: Start difference. First operand 187 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:57,403 INFO L93 Difference]: Finished difference Result 416 states and 1145 transitions. [2022-01-18 15:32:57,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:57,403 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:57,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:57,404 INFO L225 Difference]: With dead ends: 416 [2022-01-18 15:32:57,404 INFO L226 Difference]: Without dead ends: 401 [2022-01-18 15:32:57,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:57,404 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:57,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 76 Invalid, 251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:57,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2022-01-18 15:32:57,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 181. [2022-01-18 15:32:57,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 180 states have (on average 2.933333333333333) internal successors, (528), 180 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 528 transitions. [2022-01-18 15:32:57,407 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 528 transitions. Word has length 17 [2022-01-18 15:32:57,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:57,408 INFO L470 AbstractCegarLoop]: Abstraction has 181 states and 528 transitions. [2022-01-18 15:32:57,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,408 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 528 transitions. [2022-01-18 15:32:57,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:57,408 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:57,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:57,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2022-01-18 15:32:57,408 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:57,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:57,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1511154993, now seen corresponding path program 37 times [2022-01-18 15:32:57,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:57,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845722499] [2022-01-18 15:32:57,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:57,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:57,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:57,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:57,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:57,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845722499] [2022-01-18 15:32:57,462 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845722499] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:57,462 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:57,462 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:57,462 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090408264] [2022-01-18 15:32:57,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:57,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:57,462 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:57,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:57,463 INFO L87 Difference]: Start difference. First operand 181 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:57,604 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-01-18 15:32:57,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:57,605 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:57,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:57,606 INFO L225 Difference]: With dead ends: 437 [2022-01-18 15:32:57,606 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 15:32:57,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:57,606 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:57,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 80 Invalid, 272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:57,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 15:32:57,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 184. [2022-01-18 15:32:57,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-01-18 15:32:57,612 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-01-18 15:32:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:57,612 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-01-18 15:32:57,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,612 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-01-18 15:32:57,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:57,612 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:57,612 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:57,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2022-01-18 15:32:57,613 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:57,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:57,613 INFO L85 PathProgramCache]: Analyzing trace with hash -798861483, now seen corresponding path program 38 times [2022-01-18 15:32:57,613 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:57,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287057699] [2022-01-18 15:32:57,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:57,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:57,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:57,672 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:57,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287057699] [2022-01-18 15:32:57,672 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287057699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:57,672 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:57,673 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:57,673 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008892105] [2022-01-18 15:32:57,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:57,673 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:57,673 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:57,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:57,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:57,673 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:57,806 INFO L93 Difference]: Finished difference Result 435 states and 1194 transitions. [2022-01-18 15:32:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:57,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:57,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:57,807 INFO L225 Difference]: With dead ends: 435 [2022-01-18 15:32:57,807 INFO L226 Difference]: Without dead ends: 420 [2022-01-18 15:32:57,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:57,808 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 84 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 227 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 227 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:57,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 74 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 227 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:57,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2022-01-18 15:32:57,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 182. [2022-01-18 15:32:57,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-01-18 15:32:57,813 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-01-18 15:32:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:57,813 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-01-18 15:32:57,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:57,813 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-01-18 15:32:57,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:57,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:57,814 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:57,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2022-01-18 15:32:57,814 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:57,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:57,814 INFO L85 PathProgramCache]: Analyzing trace with hash 322535469, now seen corresponding path program 39 times [2022-01-18 15:32:57,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:57,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585502628] [2022-01-18 15:32:57,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:57,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:57,859 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:57,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585502628] [2022-01-18 15:32:57,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585502628] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:57,860 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:57,860 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:57,860 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684980785] [2022-01-18 15:32:57,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:57,860 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:57,860 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:57,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:57,860 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:58,003 INFO L93 Difference]: Finished difference Result 468 states and 1258 transitions. [2022-01-18 15:32:58,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:58,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:58,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:58,005 INFO L225 Difference]: With dead ends: 468 [2022-01-18 15:32:58,005 INFO L226 Difference]: Without dead ends: 453 [2022-01-18 15:32:58,005 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:58,005 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 74 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:58,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 81 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:58,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-18 15:32:58,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 185. [2022-01-18 15:32:58,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 184 states have (on average 2.9782608695652173) internal successors, (548), 184 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 548 transitions. [2022-01-18 15:32:58,011 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 548 transitions. Word has length 17 [2022-01-18 15:32:58,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:58,011 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 548 transitions. [2022-01-18 15:32:58,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,011 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 548 transitions. [2022-01-18 15:32:58,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:58,012 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:58,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:58,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2022-01-18 15:32:58,012 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:58,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:58,012 INFO L85 PathProgramCache]: Analyzing trace with hash -637605199, now seen corresponding path program 40 times [2022-01-18 15:32:58,013 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:58,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407479780] [2022-01-18 15:32:58,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:58,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:58,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:58,077 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:58,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407479780] [2022-01-18 15:32:58,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407479780] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:58,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:58,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:58,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665116033] [2022-01-18 15:32:58,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:58,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:58,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:58,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:58,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:58,077 INFO L87 Difference]: Start difference. First operand 185 states and 548 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:58,187 INFO L93 Difference]: Finished difference Result 452 states and 1235 transitions. [2022-01-18 15:32:58,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:58,188 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:58,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:58,189 INFO L225 Difference]: With dead ends: 452 [2022-01-18 15:32:58,189 INFO L226 Difference]: Without dead ends: 437 [2022-01-18 15:32:58,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:58,189 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:58,189 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 75 Invalid, 231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:58,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 437 states. [2022-01-18 15:32:58,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 437 to 182. [2022-01-18 15:32:58,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.9502762430939224) internal successors, (534), 181 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 534 transitions. [2022-01-18 15:32:58,193 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 534 transitions. Word has length 17 [2022-01-18 15:32:58,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:58,193 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 534 transitions. [2022-01-18 15:32:58,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,194 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 534 transitions. [2022-01-18 15:32:58,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:58,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:58,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:58,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2022-01-18 15:32:58,194 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:58,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1934965487, now seen corresponding path program 41 times [2022-01-18 15:32:58,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:58,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023815680] [2022-01-18 15:32:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:58,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:58,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:58,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:58,254 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:58,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023815680] [2022-01-18 15:32:58,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023815680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:58,255 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:58,255 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:58,255 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070422231] [2022-01-18 15:32:58,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:58,255 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:58,255 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:58,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:58,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:58,256 INFO L87 Difference]: Start difference. First operand 182 states and 534 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:58,386 INFO L93 Difference]: Finished difference Result 446 states and 1215 transitions. [2022-01-18 15:32:58,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:58,386 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:58,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:58,387 INFO L225 Difference]: With dead ends: 446 [2022-01-18 15:32:58,387 INFO L226 Difference]: Without dead ends: 431 [2022-01-18 15:32:58,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:58,387 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:58,388 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 78 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:58,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2022-01-18 15:32:58,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 184. [2022-01-18 15:32:58,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.9672131147540983) internal successors, (543), 183 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 543 transitions. [2022-01-18 15:32:58,392 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 543 transitions. Word has length 17 [2022-01-18 15:32:58,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:58,392 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 543 transitions. [2022-01-18 15:32:58,392 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,392 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 543 transitions. [2022-01-18 15:32:58,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:58,393 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:58,393 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:58,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2022-01-18 15:32:58,393 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:58,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:58,393 INFO L85 PathProgramCache]: Analyzing trace with hash -587834731, now seen corresponding path program 42 times [2022-01-18 15:32:58,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:58,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1003018116] [2022-01-18 15:32:58,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:58,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:58,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:58,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:58,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:58,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1003018116] [2022-01-18 15:32:58,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1003018116] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:58,440 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:58,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:58,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602610281] [2022-01-18 15:32:58,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:58,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:58,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:58,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:58,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:58,441 INFO L87 Difference]: Start difference. First operand 184 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:58,554 INFO L93 Difference]: Finished difference Result 425 states and 1177 transitions. [2022-01-18 15:32:58,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:58,555 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:58,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:58,556 INFO L225 Difference]: With dead ends: 425 [2022-01-18 15:32:58,556 INFO L226 Difference]: Without dead ends: 410 [2022-01-18 15:32:58,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:32:58,556 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 63 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:58,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 78 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:58,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-18 15:32:58,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 179. [2022-01-18 15:32:58,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 178 states have (on average 2.9101123595505616) internal successors, (518), 178 states have internal predecessors, (518), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 518 transitions. [2022-01-18 15:32:58,561 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 518 transitions. Word has length 17 [2022-01-18 15:32:58,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:58,561 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 518 transitions. [2022-01-18 15:32:58,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,562 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 518 transitions. [2022-01-18 15:32:58,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:58,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:58,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:58,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2022-01-18 15:32:58,562 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:58,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:58,563 INFO L85 PathProgramCache]: Analyzing trace with hash 1352503261, now seen corresponding path program 43 times [2022-01-18 15:32:58,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:58,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261828832] [2022-01-18 15:32:58,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:58,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:58,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:58,602 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:58,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261828832] [2022-01-18 15:32:58,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261828832] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:58,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:58,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:58,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477405287] [2022-01-18 15:32:58,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:58,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:58,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:58,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:58,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:58,603 INFO L87 Difference]: Start difference. First operand 179 states and 518 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:58,733 INFO L93 Difference]: Finished difference Result 323 states and 889 transitions. [2022-01-18 15:32:58,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:58,733 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:58,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:58,735 INFO L225 Difference]: With dead ends: 323 [2022-01-18 15:32:58,736 INFO L226 Difference]: Without dead ends: 308 [2022-01-18 15:32:58,736 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:58,736 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 72 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:58,736 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 70 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:58,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-18 15:32:58,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 187. [2022-01-18 15:32:58,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 186 states have (on average 2.913978494623656) internal successors, (542), 186 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 542 transitions. [2022-01-18 15:32:58,740 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 542 transitions. Word has length 17 [2022-01-18 15:32:58,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:58,741 INFO L470 AbstractCegarLoop]: Abstraction has 187 states and 542 transitions. [2022-01-18 15:32:58,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,741 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 542 transitions. [2022-01-18 15:32:58,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:58,741 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:58,741 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:58,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2022-01-18 15:32:58,742 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:58,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:58,742 INFO L85 PathProgramCache]: Analyzing trace with hash 943806751, now seen corresponding path program 44 times [2022-01-18 15:32:58,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:58,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849878823] [2022-01-18 15:32:58,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:58,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:58,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:58,792 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:58,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849878823] [2022-01-18 15:32:58,792 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849878823] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:58,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:58,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:58,793 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431001813] [2022-01-18 15:32:58,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:58,793 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:58,793 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:58,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:58,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:58,794 INFO L87 Difference]: Start difference. First operand 187 states and 542 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:58,912 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-01-18 15:32:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:58,912 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:58,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:58,913 INFO L225 Difference]: With dead ends: 353 [2022-01-18 15:32:58,913 INFO L226 Difference]: Without dead ends: 338 [2022-01-18 15:32:58,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:58,913 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 82 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:58,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 67 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:58,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-18 15:32:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 189. [2022-01-18 15:32:58,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9308510638297873) internal successors, (551), 188 states have internal predecessors, (551), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 551 transitions. [2022-01-18 15:32:58,917 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 551 transitions. Word has length 17 [2022-01-18 15:32:58,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:58,917 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 551 transitions. [2022-01-18 15:32:58,917 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:58,917 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 551 transitions. [2022-01-18 15:32:58,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:58,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:58,917 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:58,917 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2022-01-18 15:32:58,917 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:58,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash -2060778725, now seen corresponding path program 45 times [2022-01-18 15:32:58,918 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:58,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253920786] [2022-01-18 15:32:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:58,918 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:58,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:58,963 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:58,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253920786] [2022-01-18 15:32:58,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253920786] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:58,963 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:58,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:58,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908547517] [2022-01-18 15:32:58,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:58,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:58,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:58,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:58,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:58,964 INFO L87 Difference]: Start difference. First operand 189 states and 551 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:59,106 INFO L93 Difference]: Finished difference Result 336 states and 921 transitions. [2022-01-18 15:32:59,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:59,107 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:59,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:59,107 INFO L225 Difference]: With dead ends: 336 [2022-01-18 15:32:59,107 INFO L226 Difference]: Without dead ends: 321 [2022-01-18 15:32:59,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:59,108 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 66 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:59,108 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 69 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:59,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-18 15:32:59,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 183. [2022-01-18 15:32:59,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 182 states have (on average 2.901098901098901) internal successors, (528), 182 states have internal predecessors, (528), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 528 transitions. [2022-01-18 15:32:59,111 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 528 transitions. Word has length 17 [2022-01-18 15:32:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:59,111 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 528 transitions. [2022-01-18 15:32:59,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,111 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 528 transitions. [2022-01-18 15:32:59,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:59,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:59,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:59,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2022-01-18 15:32:59,112 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:59,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:59,112 INFO L85 PathProgramCache]: Analyzing trace with hash -140211165, now seen corresponding path program 46 times [2022-01-18 15:32:59,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:59,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108106357] [2022-01-18 15:32:59,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:59,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:59,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:59,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:59,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:59,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108106357] [2022-01-18 15:32:59,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108106357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:59,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:59,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:59,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234775149] [2022-01-18 15:32:59,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:59,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:59,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:59,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:59,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:59,158 INFO L87 Difference]: Start difference. First operand 183 states and 528 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:59,283 INFO L93 Difference]: Finished difference Result 324 states and 889 transitions. [2022-01-18 15:32:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:59,283 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:59,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:59,284 INFO L225 Difference]: With dead ends: 324 [2022-01-18 15:32:59,284 INFO L226 Difference]: Without dead ends: 309 [2022-01-18 15:32:59,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:59,284 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 234 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:59,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 71 Invalid, 235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 234 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:59,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-18 15:32:59,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 189. [2022-01-18 15:32:59,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-01-18 15:32:59,288 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-01-18 15:32:59,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:59,288 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-01-18 15:32:59,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,288 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-01-18 15:32:59,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:59,288 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:59,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:59,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2022-01-18 15:32:59,288 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:59,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:59,289 INFO L85 PathProgramCache]: Analyzing trace with hash 790599975, now seen corresponding path program 47 times [2022-01-18 15:32:59,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:59,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529299751] [2022-01-18 15:32:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:59,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:59,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:59,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:59,333 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:59,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529299751] [2022-01-18 15:32:59,334 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529299751] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:59,334 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:59,334 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:59,334 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014941354] [2022-01-18 15:32:59,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:59,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:59,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:59,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:59,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:59,335 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:59,477 INFO L93 Difference]: Finished difference Result 354 states and 954 transitions. [2022-01-18 15:32:59,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:59,477 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:59,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:59,478 INFO L225 Difference]: With dead ends: 354 [2022-01-18 15:32:59,478 INFO L226 Difference]: Without dead ends: 339 [2022-01-18 15:32:59,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:59,478 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:59,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 70 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:59,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2022-01-18 15:32:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 191. [2022-01-18 15:32:59,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 190 states have (on average 2.905263157894737) internal successors, (552), 190 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 552 transitions. [2022-01-18 15:32:59,483 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 552 transitions. Word has length 17 [2022-01-18 15:32:59,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:59,484 INFO L470 AbstractCegarLoop]: Abstraction has 191 states and 552 transitions. [2022-01-18 15:32:59,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 552 transitions. [2022-01-18 15:32:59,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:59,484 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:59,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:59,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2022-01-18 15:32:59,484 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:59,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:59,485 INFO L85 PathProgramCache]: Analyzing trace with hash 2080981795, now seen corresponding path program 48 times [2022-01-18 15:32:59,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:59,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019363819] [2022-01-18 15:32:59,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:59,485 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:59,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:59,539 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:59,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019363819] [2022-01-18 15:32:59,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019363819] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:59,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:59,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:59,540 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904398237] [2022-01-18 15:32:59,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:59,540 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:59,540 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:59,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:59,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:59,540 INFO L87 Difference]: Start difference. First operand 191 states and 552 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:59,665 INFO L93 Difference]: Finished difference Result 333 states and 916 transitions. [2022-01-18 15:32:59,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:59,665 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:59,666 INFO L225 Difference]: With dead ends: 333 [2022-01-18 15:32:59,666 INFO L226 Difference]: Without dead ends: 318 [2022-01-18 15:32:59,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:32:59,666 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 60 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:59,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 69 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:59,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-01-18 15:32:59,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 189. [2022-01-18 15:32:59,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.8882978723404253) internal successors, (543), 188 states have internal predecessors, (543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 543 transitions. [2022-01-18 15:32:59,671 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 543 transitions. Word has length 17 [2022-01-18 15:32:59,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:59,671 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 543 transitions. [2022-01-18 15:32:59,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,671 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 543 transitions. [2022-01-18 15:32:59,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:59,672 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:59,672 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:59,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2022-01-18 15:32:59,672 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:59,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:59,673 INFO L85 PathProgramCache]: Analyzing trace with hash 424957057, now seen corresponding path program 49 times [2022-01-18 15:32:59,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:59,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290883905] [2022-01-18 15:32:59,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:59,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:59,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:59,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:59,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290883905] [2022-01-18 15:32:59,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290883905] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:59,726 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:59,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:59,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577798209] [2022-01-18 15:32:59,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:59,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:59,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:59,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:59,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:59,727 INFO L87 Difference]: Start difference. First operand 189 states and 543 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:32:59,848 INFO L93 Difference]: Finished difference Result 386 states and 1068 transitions. [2022-01-18 15:32:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:32:59,848 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:32:59,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:32:59,849 INFO L225 Difference]: With dead ends: 386 [2022-01-18 15:32:59,849 INFO L226 Difference]: Without dead ends: 371 [2022-01-18 15:32:59,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:32:59,849 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 78 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:32:59,849 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 66 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:32:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-18 15:32:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 194. [2022-01-18 15:32:59,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.922279792746114) internal successors, (564), 193 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 564 transitions. [2022-01-18 15:32:59,854 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 564 transitions. Word has length 17 [2022-01-18 15:32:59,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:32:59,854 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 564 transitions. [2022-01-18 15:32:59,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:32:59,854 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 564 transitions. [2022-01-18 15:32:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:32:59,855 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:32:59,855 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:32:59,855 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2022-01-18 15:32:59,855 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:32:59,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:32:59,856 INFO L85 PathProgramCache]: Analyzing trace with hash -1885059419, now seen corresponding path program 50 times [2022-01-18 15:32:59,856 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:32:59,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567125270] [2022-01-18 15:32:59,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:32:59,856 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:32:59,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:32:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:32:59,913 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:32:59,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567125270] [2022-01-18 15:32:59,913 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567125270] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:32:59,913 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:32:59,913 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:32:59,913 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409366884] [2022-01-18 15:32:59,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:32:59,913 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:32:59,914 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:32:59,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:32:59,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:32:59,914 INFO L87 Difference]: Start difference. First operand 194 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:00,061 INFO L93 Difference]: Finished difference Result 390 states and 1074 transitions. [2022-01-18 15:33:00,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:00,061 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:00,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:00,062 INFO L225 Difference]: With dead ends: 390 [2022-01-18 15:33:00,063 INFO L226 Difference]: Without dead ends: 375 [2022-01-18 15:33:00,063 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:00,063 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 69 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:00,063 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 72 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2022-01-18 15:33:00,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 192. [2022-01-18 15:33:00,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 15:33:00,068 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 15:33:00,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:00,068 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 15:33:00,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,068 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 15:33:00,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:00,069 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:00,069 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:00,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2022-01-18 15:33:00,069 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:00,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:00,069 INFO L85 PathProgramCache]: Analyzing trace with hash 801592695, now seen corresponding path program 51 times [2022-01-18 15:33:00,070 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:00,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967169875] [2022-01-18 15:33:00,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:00,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:00,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:00,117 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:00,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967169875] [2022-01-18 15:33:00,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967169875] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:00,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:00,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:00,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393584152] [2022-01-18 15:33:00,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:00,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:00,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:00,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:00,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:00,118 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:00,220 INFO L93 Difference]: Finished difference Result 386 states and 1060 transitions. [2022-01-18 15:33:00,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:00,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:00,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:00,221 INFO L225 Difference]: With dead ends: 386 [2022-01-18 15:33:00,221 INFO L226 Difference]: Without dead ends: 371 [2022-01-18 15:33:00,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:00,221 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 74 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 190 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:00,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 64 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 190 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:00,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2022-01-18 15:33:00,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 192. [2022-01-18 15:33:00,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 15:33:00,227 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 15:33:00,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:00,227 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 15:33:00,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,227 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 15:33:00,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:00,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:00,228 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:00,228 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2022-01-18 15:33:00,228 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:00,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:00,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1581265029, now seen corresponding path program 52 times [2022-01-18 15:33:00,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:00,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69703445] [2022-01-18 15:33:00,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:00,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:00,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:00,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:00,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:00,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69703445] [2022-01-18 15:33:00,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69703445] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:00,274 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:00,274 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:00,274 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095041797] [2022-01-18 15:33:00,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:00,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:00,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:00,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:00,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:00,275 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:00,414 INFO L93 Difference]: Finished difference Result 464 states and 1256 transitions. [2022-01-18 15:33:00,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:00,414 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:00,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:00,415 INFO L225 Difference]: With dead ends: 464 [2022-01-18 15:33:00,415 INFO L226 Difference]: Without dead ends: 449 [2022-01-18 15:33:00,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:00,416 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 87 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:00,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 76 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:00,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 449 states. [2022-01-18 15:33:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 449 to 195. [2022-01-18 15:33:00,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-01-18 15:33:00,421 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-01-18 15:33:00,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:00,421 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-01-18 15:33:00,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-01-18 15:33:00,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:00,422 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:00,422 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:00,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2022-01-18 15:33:00,423 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:00,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash -728751447, now seen corresponding path program 53 times [2022-01-18 15:33:00,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:00,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418898096] [2022-01-18 15:33:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:00,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:00,487 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:00,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:00,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418898096] [2022-01-18 15:33:00,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418898096] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:00,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:00,488 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:00,488 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884556754] [2022-01-18 15:33:00,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:00,488 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:00,488 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:00,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:00,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:00,489 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:00,604 INFO L93 Difference]: Finished difference Result 468 states and 1262 transitions. [2022-01-18 15:33:00,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:00,604 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:00,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:00,605 INFO L225 Difference]: With dead ends: 468 [2022-01-18 15:33:00,605 INFO L226 Difference]: Without dead ends: 453 [2022-01-18 15:33:00,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:00,605 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:00,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 78 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:00,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2022-01-18 15:33:00,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 193. [2022-01-18 15:33:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-01-18 15:33:00,609 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-01-18 15:33:00,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:00,609 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-01-18 15:33:00,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,609 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-01-18 15:33:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:00,610 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:00,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:00,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2022-01-18 15:33:00,610 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:00,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:00,610 INFO L85 PathProgramCache]: Analyzing trace with hash 392645505, now seen corresponding path program 54 times [2022-01-18 15:33:00,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:00,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [59149510] [2022-01-18 15:33:00,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:00,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:00,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:00,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [59149510] [2022-01-18 15:33:00,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [59149510] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:00,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:00,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:00,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577331987] [2022-01-18 15:33:00,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:00,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:00,656 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:00,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:00,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:00,656 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:00,776 INFO L93 Difference]: Finished difference Result 431 states and 1182 transitions. [2022-01-18 15:33:00,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:00,777 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:00,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:00,777 INFO L225 Difference]: With dead ends: 431 [2022-01-18 15:33:00,778 INFO L226 Difference]: Without dead ends: 416 [2022-01-18 15:33:00,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:00,778 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:00,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 75 Invalid, 216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:00,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-01-18 15:33:00,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 196. [2022-01-18 15:33:00,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.948717948717949) internal successors, (575), 195 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 575 transitions. [2022-01-18 15:33:00,783 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 575 transitions. Word has length 17 [2022-01-18 15:33:00,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:00,783 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 575 transitions. [2022-01-18 15:33:00,783 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,783 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 575 transitions. [2022-01-18 15:33:00,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:00,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:00,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:00,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2022-01-18 15:33:00,784 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:00,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:00,784 INFO L85 PathProgramCache]: Analyzing trace with hash -567495163, now seen corresponding path program 55 times [2022-01-18 15:33:00,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:00,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671110355] [2022-01-18 15:33:00,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:00,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:00,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:00,838 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:00,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671110355] [2022-01-18 15:33:00,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671110355] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:00,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:00,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:00,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698130887] [2022-01-18 15:33:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:00,839 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:00,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:00,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:00,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:00,839 INFO L87 Difference]: Start difference. First operand 196 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:00,950 INFO L93 Difference]: Finished difference Result 415 states and 1159 transitions. [2022-01-18 15:33:00,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:00,950 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:00,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:00,951 INFO L225 Difference]: With dead ends: 415 [2022-01-18 15:33:00,951 INFO L226 Difference]: Without dead ends: 400 [2022-01-18 15:33:00,951 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:00,952 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 61 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:00,952 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 78 Invalid, 247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:00,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-01-18 15:33:00,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 193. [2022-01-18 15:33:00,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 193 states, 192 states have (on average 2.921875) internal successors, (561), 192 states have internal predecessors, (561), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 561 transitions. [2022-01-18 15:33:00,956 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 561 transitions. Word has length 17 [2022-01-18 15:33:00,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:00,956 INFO L470 AbstractCegarLoop]: Abstraction has 193 states and 561 transitions. [2022-01-18 15:33:00,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:00,957 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 561 transitions. [2022-01-18 15:33:00,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:00,957 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:00,957 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:00,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2022-01-18 15:33:00,957 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:00,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:00,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1864855451, now seen corresponding path program 56 times [2022-01-18 15:33:00,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:00,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125941372] [2022-01-18 15:33:00,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:00,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:00,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:01,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:01,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:01,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125941372] [2022-01-18 15:33:01,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125941372] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:01,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:01,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:01,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483461489] [2022-01-18 15:33:01,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:01,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:01,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:01,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:01,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:01,006 INFO L87 Difference]: Start difference. First operand 193 states and 561 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:01,151 INFO L93 Difference]: Finished difference Result 449 states and 1229 transitions. [2022-01-18 15:33:01,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:01,151 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:01,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:01,152 INFO L225 Difference]: With dead ends: 449 [2022-01-18 15:33:01,153 INFO L226 Difference]: Without dead ends: 434 [2022-01-18 15:33:01,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:01,153 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:01,153 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 84 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:01,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2022-01-18 15:33:01,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 195. [2022-01-18 15:33:01,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9381443298969074) internal successors, (570), 194 states have internal predecessors, (570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 570 transitions. [2022-01-18 15:33:01,158 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 570 transitions. Word has length 17 [2022-01-18 15:33:01,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:01,158 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 570 transitions. [2022-01-18 15:33:01,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,158 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 570 transitions. [2022-01-18 15:33:01,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:01,163 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:01,163 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:01,163 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2022-01-18 15:33:01,163 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:01,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:01,164 INFO L85 PathProgramCache]: Analyzing trace with hash -517724695, now seen corresponding path program 57 times [2022-01-18 15:33:01,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:01,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031580808] [2022-01-18 15:33:01,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:01,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:01,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:01,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:01,216 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031580808] [2022-01-18 15:33:01,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031580808] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:01,216 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:01,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:01,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831046060] [2022-01-18 15:33:01,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:01,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:01,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:01,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:01,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:01,217 INFO L87 Difference]: Start difference. First operand 195 states and 570 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:01,356 INFO L93 Difference]: Finished difference Result 428 states and 1191 transitions. [2022-01-18 15:33:01,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:01,356 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:01,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:01,358 INFO L225 Difference]: With dead ends: 428 [2022-01-18 15:33:01,358 INFO L226 Difference]: Without dead ends: 413 [2022-01-18 15:33:01,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:01,358 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 60 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:01,358 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 78 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:01,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2022-01-18 15:33:01,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 192. [2022-01-18 15:33:01,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 15:33:01,363 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 15:33:01,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:01,364 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 15:33:01,364 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,364 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 15:33:01,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:01,364 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:01,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:01,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2022-01-18 15:33:01,365 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:01,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:01,365 INFO L85 PathProgramCache]: Analyzing trace with hash -57893061, now seen corresponding path program 58 times [2022-01-18 15:33:01,365 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:01,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667016298] [2022-01-18 15:33:01,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:01,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:01,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:01,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:01,412 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:01,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667016298] [2022-01-18 15:33:01,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667016298] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:01,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:01,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:01,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676672208] [2022-01-18 15:33:01,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:01,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:01,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:01,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:01,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:01,413 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:01,547 INFO L93 Difference]: Finished difference Result 429 states and 1161 transitions. [2022-01-18 15:33:01,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:01,547 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:01,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:01,548 INFO L225 Difference]: With dead ends: 429 [2022-01-18 15:33:01,548 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 15:33:01,548 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:01,549 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 209 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:01,549 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 72 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 209 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:01,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 15:33:01,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 194. [2022-01-18 15:33:01,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 193 states have (on average 2.911917098445596) internal successors, (562), 193 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 562 transitions. [2022-01-18 15:33:01,554 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 562 transitions. Word has length 17 [2022-01-18 15:33:01,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:01,554 INFO L470 AbstractCegarLoop]: Abstraction has 194 states and 562 transitions. [2022-01-18 15:33:01,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,554 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 562 transitions. [2022-01-18 15:33:01,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:01,555 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:01,555 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:01,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2022-01-18 15:33:01,555 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:01,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:01,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518793, now seen corresponding path program 59 times [2022-01-18 15:33:01,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:01,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239497856] [2022-01-18 15:33:01,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:01,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:01,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:01,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:01,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239497856] [2022-01-18 15:33:01,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239497856] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:01,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:01,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:01,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118689088] [2022-01-18 15:33:01,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:01,614 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:01,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:01,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:01,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:01,615 INFO L87 Difference]: Start difference. First operand 194 states and 562 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:01,765 INFO L93 Difference]: Finished difference Result 430 states and 1172 transitions. [2022-01-18 15:33:01,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:01,765 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:01,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:01,766 INFO L225 Difference]: With dead ends: 430 [2022-01-18 15:33:01,766 INFO L226 Difference]: Without dead ends: 415 [2022-01-18 15:33:01,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:01,767 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 165 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:01,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 86 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:01,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-18 15:33:01,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 196. [2022-01-18 15:33:01,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.928205128205128) internal successors, (571), 195 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 571 transitions. [2022-01-18 15:33:01,772 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 571 transitions. Word has length 17 [2022-01-18 15:33:01,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:01,772 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 571 transitions. [2022-01-18 15:33:01,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,772 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 571 transitions. [2022-01-18 15:33:01,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:01,773 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:01,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:01,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2022-01-18 15:33:01,773 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:01,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:01,773 INFO L85 PathProgramCache]: Analyzing trace with hash 79611963, now seen corresponding path program 60 times [2022-01-18 15:33:01,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:01,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417142549] [2022-01-18 15:33:01,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:01,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:01,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:01,829 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:01,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417142549] [2022-01-18 15:33:01,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417142549] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:01,830 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:01,830 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:01,830 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340768902] [2022-01-18 15:33:01,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:01,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:01,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:01,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:01,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:01,830 INFO L87 Difference]: Start difference. First operand 196 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:01,943 INFO L93 Difference]: Finished difference Result 409 states and 1134 transitions. [2022-01-18 15:33:01,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:01,943 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:01,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:01,944 INFO L225 Difference]: With dead ends: 409 [2022-01-18 15:33:01,944 INFO L226 Difference]: Without dead ends: 394 [2022-01-18 15:33:01,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:01,944 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 61 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 216 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:01,944 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 77 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 216 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:01,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 394 states. [2022-01-18 15:33:01,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 394 to 192. [2022-01-18 15:33:01,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 191 states have (on average 2.905759162303665) internal successors, (555), 191 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 555 transitions. [2022-01-18 15:33:01,948 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 555 transitions. Word has length 17 [2022-01-18 15:33:01,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:01,948 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 555 transitions. [2022-01-18 15:33:01,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:01,949 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 555 transitions. [2022-01-18 15:33:01,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:01,949 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:01,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:01,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2022-01-18 15:33:01,949 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:01,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:01,950 INFO L85 PathProgramCache]: Analyzing trace with hash -914182639, now seen corresponding path program 61 times [2022-01-18 15:33:01,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:01,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130926198] [2022-01-18 15:33:01,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:01,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:01,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:01,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:01,991 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:01,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130926198] [2022-01-18 15:33:01,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130926198] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:01,991 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:01,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:01,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710367819] [2022-01-18 15:33:01,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:01,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:01,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:01,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:01,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:01,992 INFO L87 Difference]: Start difference. First operand 192 states and 555 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:02,106 INFO L93 Difference]: Finished difference Result 328 states and 903 transitions. [2022-01-18 15:33:02,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:02,106 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:02,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:02,107 INFO L225 Difference]: With dead ends: 328 [2022-01-18 15:33:02,107 INFO L226 Difference]: Without dead ends: 313 [2022-01-18 15:33:02,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:02,107 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 71 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:02,107 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:02,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-18 15:33:02,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 197. [2022-01-18 15:33:02,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-01-18 15:33:02,111 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-01-18 15:33:02,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:02,111 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-01-18 15:33:02,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,111 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-01-18 15:33:02,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:02,112 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:02,112 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:02,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2022-01-18 15:33:02,112 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:02,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:02,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1637182287, now seen corresponding path program 62 times [2022-01-18 15:33:02,113 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:02,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50918676] [2022-01-18 15:33:02,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:02,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:02,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:02,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:02,162 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:02,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [50918676] [2022-01-18 15:33:02,162 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [50918676] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:02,162 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:02,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:02,162 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728887674] [2022-01-18 15:33:02,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:02,162 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:02,162 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:02,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:02,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:02,163 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:02,274 INFO L93 Difference]: Finished difference Result 357 states and 963 transitions. [2022-01-18 15:33:02,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:02,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:02,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:02,280 INFO L225 Difference]: With dead ends: 357 [2022-01-18 15:33:02,280 INFO L226 Difference]: Without dead ends: 342 [2022-01-18 15:33:02,280 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:02,280 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 82 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:02,280 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 72 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:02,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2022-01-18 15:33:02,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 199. [2022-01-18 15:33:02,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-01-18 15:33:02,286 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-01-18 15:33:02,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:02,286 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-01-18 15:33:02,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,286 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-01-18 15:33:02,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:02,287 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:02,287 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:02,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2022-01-18 15:33:02,287 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:02,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:02,287 INFO L85 PathProgramCache]: Analyzing trace with hash 347768533, now seen corresponding path program 63 times [2022-01-18 15:33:02,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:02,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396090357] [2022-01-18 15:33:02,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:02,288 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:02,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:02,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:02,336 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:02,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396090357] [2022-01-18 15:33:02,336 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396090357] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:02,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:02,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:02,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253886862] [2022-01-18 15:33:02,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:02,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:02,337 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:02,337 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:02,485 INFO L93 Difference]: Finished difference Result 334 states and 918 transitions. [2022-01-18 15:33:02,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:02,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:02,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:02,486 INFO L225 Difference]: With dead ends: 334 [2022-01-18 15:33:02,486 INFO L226 Difference]: Without dead ends: 319 [2022-01-18 15:33:02,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:02,487 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 64 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:02,487 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 72 Invalid, 224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-01-18 15:33:02,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 195. [2022-01-18 15:33:02,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 15:33:02,491 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 15:33:02,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:02,492 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 15:33:02,492 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,492 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 15:33:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:02,492 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:02,492 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:02,492 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2022-01-18 15:33:02,493 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:02,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:02,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1049436965, now seen corresponding path program 64 times [2022-01-18 15:33:02,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:02,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107190712] [2022-01-18 15:33:02,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:02,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:02,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:02,548 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:02,548 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107190712] [2022-01-18 15:33:02,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107190712] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:02,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:02,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:02,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051125422] [2022-01-18 15:33:02,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:02,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:02,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:02,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:02,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:02,549 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:02,684 INFO L93 Difference]: Finished difference Result 349 states and 945 transitions. [2022-01-18 15:33:02,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:02,684 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:02,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:02,685 INFO L225 Difference]: With dead ends: 349 [2022-01-18 15:33:02,685 INFO L226 Difference]: Without dead ends: 334 [2022-01-18 15:33:02,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:02,685 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 78 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:02,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 70 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:02,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-01-18 15:33:02,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 199. [2022-01-18 15:33:02,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-01-18 15:33:02,689 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-01-18 15:33:02,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:02,689 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-01-18 15:33:02,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,689 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-01-18 15:33:02,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:02,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:02,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:02,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2022-01-18 15:33:02,690 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:02,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:02,690 INFO L85 PathProgramCache]: Analyzing trace with hash 935513855, now seen corresponding path program 65 times [2022-01-18 15:33:02,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:02,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21114532] [2022-01-18 15:33:02,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:02,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:02,745 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:02,745 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21114532] [2022-01-18 15:33:02,746 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21114532] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:02,746 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:02,746 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:02,746 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379556597] [2022-01-18 15:33:02,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:02,746 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:02,746 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:02,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:02,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:02,747 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:02,888 INFO L93 Difference]: Finished difference Result 353 states and 951 transitions. [2022-01-18 15:33:02,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:02,889 INFO L225 Difference]: With dead ends: 353 [2022-01-18 15:33:02,889 INFO L226 Difference]: Without dead ends: 338 [2022-01-18 15:33:02,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:02,890 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 74 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:02,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 70 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:02,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2022-01-18 15:33:02,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 197. [2022-01-18 15:33:02,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.913265306122449) internal successors, (571), 196 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 571 transitions. [2022-01-18 15:33:02,900 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 571 transitions. Word has length 17 [2022-01-18 15:33:02,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:02,901 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 571 transitions. [2022-01-18 15:33:02,901 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:02,901 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 571 transitions. [2022-01-18 15:33:02,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:02,901 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:02,901 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:02,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2022-01-18 15:33:02,901 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:02,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:02,902 INFO L85 PathProgramCache]: Analyzing trace with hash -672801327, now seen corresponding path program 66 times [2022-01-18 15:33:02,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:02,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239767159] [2022-01-18 15:33:02,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:02,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:02,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:02,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:02,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239767159] [2022-01-18 15:33:02,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239767159] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:02,947 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:02,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:02,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354080026] [2022-01-18 15:33:02,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:02,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:02,956 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:02,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:02,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:02,956 INFO L87 Difference]: Start difference. First operand 197 states and 571 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:03,071 INFO L93 Difference]: Finished difference Result 324 states and 891 transitions. [2022-01-18 15:33:03,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:03,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:03,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:03,072 INFO L225 Difference]: With dead ends: 324 [2022-01-18 15:33:03,072 INFO L226 Difference]: Without dead ends: 309 [2022-01-18 15:33:03,072 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:03,072 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 70 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:03,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 65 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:03,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-01-18 15:33:03,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 195. [2022-01-18 15:33:03,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 15:33:03,076 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 15:33:03,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:03,076 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 15:33:03,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,076 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 15:33:03,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:03,077 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:03,077 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:03,077 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2022-01-18 15:33:03,077 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:03,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:03,077 INFO L85 PathProgramCache]: Analyzing trace with hash 571626125, now seen corresponding path program 67 times [2022-01-18 15:33:03,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:03,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741354158] [2022-01-18 15:33:03,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:03,077 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:03,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:03,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:03,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:03,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741354158] [2022-01-18 15:33:03,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741354158] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:03,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:03,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:03,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543935793] [2022-01-18 15:33:03,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:03,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:03,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:03,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:03,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:03,127 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:03,269 INFO L93 Difference]: Finished difference Result 442 states and 1201 transitions. [2022-01-18 15:33:03,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:03,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:03,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:03,270 INFO L225 Difference]: With dead ends: 442 [2022-01-18 15:33:03,270 INFO L226 Difference]: Without dead ends: 427 [2022-01-18 15:33:03,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:03,271 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:03,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 73 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:03,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-18 15:33:03,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 198. [2022-01-18 15:33:03,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-01-18 15:33:03,275 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-01-18 15:33:03,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:03,276 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-01-18 15:33:03,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,276 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-01-18 15:33:03,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:03,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:03,276 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:03,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2022-01-18 15:33:03,276 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:03,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:03,277 INFO L85 PathProgramCache]: Analyzing trace with hash -151373523, now seen corresponding path program 68 times [2022-01-18 15:33:03,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:03,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622865600] [2022-01-18 15:33:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:03,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:03,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:03,322 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:03,323 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622865600] [2022-01-18 15:33:03,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622865600] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:03,323 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:03,323 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:03,323 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083984327] [2022-01-18 15:33:03,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:03,323 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:03,323 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:03,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:03,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:03,324 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:03,450 INFO L93 Difference]: Finished difference Result 465 states and 1248 transitions. [2022-01-18 15:33:03,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:03,450 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:03,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:03,451 INFO L225 Difference]: With dead ends: 465 [2022-01-18 15:33:03,451 INFO L226 Difference]: Without dead ends: 450 [2022-01-18 15:33:03,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:03,452 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 101 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:03,452 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 76 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:03,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-01-18 15:33:03,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 200. [2022-01-18 15:33:03,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-01-18 15:33:03,457 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-01-18 15:33:03,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:03,457 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-01-18 15:33:03,457 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,458 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-01-18 15:33:03,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:03,458 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:03,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:03,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2022-01-18 15:33:03,458 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:03,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:03,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1833577297, now seen corresponding path program 69 times [2022-01-18 15:33:03,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:03,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843964907] [2022-01-18 15:33:03,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:03,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:03,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:03,509 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:03,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843964907] [2022-01-18 15:33:03,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843964907] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:03,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:03,510 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:03,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641688776] [2022-01-18 15:33:03,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:03,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:03,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:03,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:03,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:03,511 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:03,658 INFO L93 Difference]: Finished difference Result 442 states and 1203 transitions. [2022-01-18 15:33:03,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:03,658 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:03,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:03,659 INFO L225 Difference]: With dead ends: 442 [2022-01-18 15:33:03,659 INFO L226 Difference]: Without dead ends: 427 [2022-01-18 15:33:03,660 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:03,660 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 82 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:03,660 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 81 Invalid, 246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:03,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2022-01-18 15:33:03,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 196. [2022-01-18 15:33:03,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 15:33:03,665 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 15:33:03,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:03,665 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 15:33:03,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,665 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 15:33:03,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:03,666 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:03,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:03,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2022-01-18 15:33:03,666 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:03,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:03,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1915840751, now seen corresponding path program 70 times [2022-01-18 15:33:03,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:03,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120019839] [2022-01-18 15:33:03,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:03,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:03,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:03,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:03,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:03,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120019839] [2022-01-18 15:33:03,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120019839] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:03,706 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:03,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:03,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721171966] [2022-01-18 15:33:03,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:03,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:03,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:03,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:03,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:03,707 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:03,825 INFO L93 Difference]: Finished difference Result 393 states and 1085 transitions. [2022-01-18 15:33:03,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:03,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:03,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:03,826 INFO L225 Difference]: With dead ends: 393 [2022-01-18 15:33:03,826 INFO L226 Difference]: Without dead ends: 378 [2022-01-18 15:33:03,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:03,827 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:03,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:03,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-01-18 15:33:03,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 199. [2022-01-18 15:33:03,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9292929292929295) internal successors, (580), 198 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 580 transitions. [2022-01-18 15:33:03,831 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 580 transitions. Word has length 17 [2022-01-18 15:33:03,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:03,831 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 580 transitions. [2022-01-18 15:33:03,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:03,831 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 580 transitions. [2022-01-18 15:33:03,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:03,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:03,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:03,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2022-01-18 15:33:03,832 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:03,833 INFO L85 PathProgramCache]: Analyzing trace with hash -520481395, now seen corresponding path program 71 times [2022-01-18 15:33:03,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:03,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068609161] [2022-01-18 15:33:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:03,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:03,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:03,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:03,886 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:03,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068609161] [2022-01-18 15:33:03,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068609161] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:03,886 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:03,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:03,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943677374] [2022-01-18 15:33:03,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:03,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:03,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:03,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:03,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:03,887 INFO L87 Difference]: Start difference. First operand 199 states and 580 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:04,005 INFO L93 Difference]: Finished difference Result 391 states and 1089 transitions. [2022-01-18 15:33:04,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:04,005 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:04,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:04,005 INFO L225 Difference]: With dead ends: 391 [2022-01-18 15:33:04,006 INFO L226 Difference]: Without dead ends: 376 [2022-01-18 15:33:04,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:04,006 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 71 mSDsluCounter, 138 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:04,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 77 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:04,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2022-01-18 15:33:04,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 202. [2022-01-18 15:33:04,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 202 states, 201 states have (on average 2.955223880597015) internal successors, (594), 201 states have internal predecessors, (594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 594 transitions. [2022-01-18 15:33:04,011 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 594 transitions. Word has length 17 [2022-01-18 15:33:04,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:04,011 INFO L470 AbstractCegarLoop]: Abstraction has 202 states and 594 transitions. [2022-01-18 15:33:04,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,011 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 594 transitions. [2022-01-18 15:33:04,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:04,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:04,011 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:04,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2022-01-18 15:33:04,012 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:04,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:04,012 INFO L85 PathProgramCache]: Analyzing trace with hash -497884847, now seen corresponding path program 72 times [2022-01-18 15:33:04,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:04,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723386480] [2022-01-18 15:33:04,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:04,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:04,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:04,063 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:04,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723386480] [2022-01-18 15:33:04,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723386480] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:04,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:04,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:04,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65217605] [2022-01-18 15:33:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:04,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:04,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:04,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:04,064 INFO L87 Difference]: Start difference. First operand 202 states and 594 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:04,175 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2022-01-18 15:33:04,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:04,175 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:04,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:04,176 INFO L225 Difference]: With dead ends: 368 [2022-01-18 15:33:04,176 INFO L226 Difference]: Without dead ends: 353 [2022-01-18 15:33:04,176 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:04,176 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 57 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:04,176 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 73 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:04,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2022-01-18 15:33:04,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 196. [2022-01-18 15:33:04,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 15:33:04,179 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 15:33:04,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:04,179 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 15:33:04,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,180 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 15:33:04,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:04,180 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:04,180 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:04,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2022-01-18 15:33:04,180 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:04,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:04,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1662051727, now seen corresponding path program 73 times [2022-01-18 15:33:04,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:04,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583174638] [2022-01-18 15:33:04,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:04,181 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:04,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:04,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:04,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583174638] [2022-01-18 15:33:04,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583174638] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:04,229 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:04,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:04,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191035067] [2022-01-18 15:33:04,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:04,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:04,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:04,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:04,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:04,229 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:04,345 INFO L93 Difference]: Finished difference Result 445 states and 1229 transitions. [2022-01-18 15:33:04,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:04,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:04,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:04,346 INFO L225 Difference]: With dead ends: 445 [2022-01-18 15:33:04,346 INFO L226 Difference]: Without dead ends: 430 [2022-01-18 15:33:04,346 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:04,346 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 78 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 245 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:04,347 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 84 Invalid, 245 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 245 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:04,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-18 15:33:04,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 199. [2022-01-18 15:33:04,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 15:33:04,351 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 15:33:04,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:04,351 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 15:33:04,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,351 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 15:33:04,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:04,351 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:04,351 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:04,351 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2022-01-18 15:33:04,352 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:04,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:04,352 INFO L85 PathProgramCache]: Analyzing trace with hash 322899093, now seen corresponding path program 74 times [2022-01-18 15:33:04,352 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:04,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164821888] [2022-01-18 15:33:04,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:04,352 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:04,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:04,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:04,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:04,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164821888] [2022-01-18 15:33:04,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164821888] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:04,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:04,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:04,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1673159280] [2022-01-18 15:33:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:04,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:04,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:04,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:04,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:04,397 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:04,537 INFO L93 Difference]: Finished difference Result 443 states and 1222 transitions. [2022-01-18 15:33:04,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:04,538 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:04,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:04,539 INFO L225 Difference]: With dead ends: 443 [2022-01-18 15:33:04,539 INFO L226 Difference]: Without dead ends: 428 [2022-01-18 15:33:04,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:04,540 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 83 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:04,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 81 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:04,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2022-01-18 15:33:04,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 197. [2022-01-18 15:33:04,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 15:33:04,544 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 15:33:04,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:04,545 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 15:33:04,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,545 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 15:33:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:04,545 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:04,545 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:04,545 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2022-01-18 15:33:04,545 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:04,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:04,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1444296045, now seen corresponding path program 75 times [2022-01-18 15:33:04,546 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:04,546 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79319488] [2022-01-18 15:33:04,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:04,546 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:04,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:04,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:04,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:04,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79319488] [2022-01-18 15:33:04,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79319488] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:04,603 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:04,603 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:04,603 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497943787] [2022-01-18 15:33:04,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:04,604 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:04,604 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:04,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:04,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:04,604 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:04,754 INFO L93 Difference]: Finished difference Result 437 states and 1201 transitions. [2022-01-18 15:33:04,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:04,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:04,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:04,756 INFO L225 Difference]: With dead ends: 437 [2022-01-18 15:33:04,756 INFO L226 Difference]: Without dead ends: 422 [2022-01-18 15:33:04,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:04,756 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 69 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:04,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 89 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:04,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 422 states. [2022-01-18 15:33:04,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 422 to 200. [2022-01-18 15:33:04,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-01-18 15:33:04,761 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-01-18 15:33:04,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:04,761 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-01-18 15:33:04,761 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,761 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-01-18 15:33:04,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:04,761 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:04,762 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:04,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2022-01-18 15:33:04,762 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:04,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:04,762 INFO L85 PathProgramCache]: Analyzing trace with hash 484155377, now seen corresponding path program 76 times [2022-01-18 15:33:04,762 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:04,762 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014611545] [2022-01-18 15:33:04,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:04,762 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:04,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:04,824 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:04,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014611545] [2022-01-18 15:33:04,824 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014611545] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:04,824 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:04,824 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:04,824 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553503918] [2022-01-18 15:33:04,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:04,825 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:04,825 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:04,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:04,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:04,825 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:04,974 INFO L93 Difference]: Finished difference Result 421 states and 1178 transitions. [2022-01-18 15:33:04,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:04,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:04,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:04,976 INFO L225 Difference]: With dead ends: 421 [2022-01-18 15:33:04,976 INFO L226 Difference]: Without dead ends: 406 [2022-01-18 15:33:04,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:04,976 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 60 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 275 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:04,976 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 86 Invalid, 275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 275 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:04,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406 states. [2022-01-18 15:33:04,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406 to 197. [2022-01-18 15:33:04,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 15:33:04,981 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 15:33:04,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:04,982 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 15:33:04,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:04,982 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 15:33:04,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:04,982 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:04,982 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:04,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2022-01-18 15:33:04,982 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:04,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:04,983 INFO L85 PathProgramCache]: Analyzing trace with hash -813204911, now seen corresponding path program 77 times [2022-01-18 15:33:04,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:04,983 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650637793] [2022-01-18 15:33:04,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:04,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:05,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:05,028 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:05,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650637793] [2022-01-18 15:33:05,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650637793] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:05,029 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:05,029 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:05,029 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495277831] [2022-01-18 15:33:05,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:05,029 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:05,029 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:05,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:05,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:05,029 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:05,134 INFO L93 Difference]: Finished difference Result 405 states and 1129 transitions. [2022-01-18 15:33:05,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:05,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:05,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:05,135 INFO L225 Difference]: With dead ends: 405 [2022-01-18 15:33:05,135 INFO L226 Difference]: Without dead ends: 390 [2022-01-18 15:33:05,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:05,135 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:05,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:05,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-18 15:33:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 199. [2022-01-18 15:33:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 15:33:05,139 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 15:33:05,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:05,139 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 15:33:05,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,139 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 15:33:05,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:05,139 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:05,139 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:05,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2022-01-18 15:33:05,140 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:05,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:05,140 INFO L85 PathProgramCache]: Analyzing trace with hash 533925845, now seen corresponding path program 78 times [2022-01-18 15:33:05,140 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:05,140 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751393275] [2022-01-18 15:33:05,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:05,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:05,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:05,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751393275] [2022-01-18 15:33:05,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751393275] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:05,185 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:05,185 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:05,185 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874801013] [2022-01-18 15:33:05,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:05,186 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:05,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:05,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:05,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:05,186 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:05,295 INFO L93 Difference]: Finished difference Result 384 states and 1091 transitions. [2022-01-18 15:33:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:05,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:05,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:05,296 INFO L225 Difference]: With dead ends: 384 [2022-01-18 15:33:05,296 INFO L226 Difference]: Without dead ends: 369 [2022-01-18 15:33:05,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:05,296 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:05,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 75 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:05,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 369 states. [2022-01-18 15:33:05,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 369 to 195. [2022-01-18 15:33:05,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 15:33:05,299 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 15:33:05,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:05,299 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 15:33:05,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 15:33:05,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:05,300 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:05,300 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:05,300 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2022-01-18 15:33:05,300 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:05,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:05,300 INFO L85 PathProgramCache]: Analyzing trace with hash -635821033, now seen corresponding path program 79 times [2022-01-18 15:33:05,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:05,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063858816] [2022-01-18 15:33:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:05,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:05,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:05,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:05,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063858816] [2022-01-18 15:33:05,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063858816] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:05,355 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:05,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:05,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174490105] [2022-01-18 15:33:05,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:05,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:05,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:05,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:05,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:05,356 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:05,486 INFO L93 Difference]: Finished difference Result 425 states and 1163 transitions. [2022-01-18 15:33:05,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:05,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:05,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:05,487 INFO L225 Difference]: With dead ends: 425 [2022-01-18 15:33:05,487 INFO L226 Difference]: Without dead ends: 410 [2022-01-18 15:33:05,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:05,491 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 78 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:05,491 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 83 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:05,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-18 15:33:05,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 200. [2022-01-18 15:33:05,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-01-18 15:33:05,496 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-01-18 15:33:05,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:05,496 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-01-18 15:33:05,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,496 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-01-18 15:33:05,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:05,496 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:05,496 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:05,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2022-01-18 15:33:05,497 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:05,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:05,497 INFO L85 PathProgramCache]: Analyzing trace with hash 1349129787, now seen corresponding path program 80 times [2022-01-18 15:33:05,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:05,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248279699] [2022-01-18 15:33:05,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:05,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:05,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:05,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:05,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:05,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248279699] [2022-01-18 15:33:05,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1248279699] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:05,549 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:05,549 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:05,549 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442647622] [2022-01-18 15:33:05,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:05,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:05,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:05,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:05,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:05,550 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:05,660 INFO L93 Difference]: Finished difference Result 429 states and 1169 transitions. [2022-01-18 15:33:05,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:05,660 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:05,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:05,661 INFO L225 Difference]: With dead ends: 429 [2022-01-18 15:33:05,661 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 15:33:05,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:05,661 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:05,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 15:33:05,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 198. [2022-01-18 15:33:05,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-01-18 15:33:05,665 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-01-18 15:33:05,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:05,665 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-01-18 15:33:05,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,665 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-01-18 15:33:05,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:05,665 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:05,666 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:05,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2022-01-18 15:33:05,666 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:05,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:05,666 INFO L85 PathProgramCache]: Analyzing trace with hash -259185395, now seen corresponding path program 81 times [2022-01-18 15:33:05,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:05,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632479729] [2022-01-18 15:33:05,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:05,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:05,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:05,713 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:05,714 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632479729] [2022-01-18 15:33:05,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632479729] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:05,714 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:05,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:05,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518857987] [2022-01-18 15:33:05,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:05,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:05,715 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:05,837 INFO L93 Difference]: Finished difference Result 429 states and 1163 transitions. [2022-01-18 15:33:05,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:05,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:05,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:05,838 INFO L225 Difference]: With dead ends: 429 [2022-01-18 15:33:05,838 INFO L226 Difference]: Without dead ends: 414 [2022-01-18 15:33:05,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:05,838 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 215 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 215 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:05,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 75 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 215 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:05,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2022-01-18 15:33:05,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 196. [2022-01-18 15:33:05,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 15:33:05,842 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 15:33:05,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:05,842 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 15:33:05,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:05,842 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 15:33:05,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:05,842 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:05,842 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:05,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2022-01-18 15:33:05,842 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:05,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:05,843 INFO L85 PathProgramCache]: Analyzing trace with hash 520486939, now seen corresponding path program 82 times [2022-01-18 15:33:05,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:05,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598198949] [2022-01-18 15:33:05,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:05,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:05,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:05,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:05,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598198949] [2022-01-18 15:33:05,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598198949] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:05,901 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:05,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:05,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6346328] [2022-01-18 15:33:05,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:05,902 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:05,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:05,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:05,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:05,902 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:06,016 INFO L93 Difference]: Finished difference Result 451 states and 1224 transitions. [2022-01-18 15:33:06,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:06,016 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:06,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:06,016 INFO L225 Difference]: With dead ends: 451 [2022-01-18 15:33:06,017 INFO L226 Difference]: Without dead ends: 436 [2022-01-18 15:33:06,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:06,017 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 243 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:06,017 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 82 Invalid, 243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 243 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:06,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-01-18 15:33:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 199. [2022-01-18 15:33:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 15:33:06,021 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 15:33:06,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:06,021 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 15:33:06,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,021 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 15:33:06,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:06,021 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:06,022 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:06,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2022-01-18 15:33:06,022 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:06,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:06,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1789529537, now seen corresponding path program 83 times [2022-01-18 15:33:06,022 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:06,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343699999] [2022-01-18 15:33:06,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:06,022 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:06,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:06,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:06,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:06,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343699999] [2022-01-18 15:33:06,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343699999] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:06,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:06,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:06,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300529865] [2022-01-18 15:33:06,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:06,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:06,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:06,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:06,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:06,072 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:06,188 INFO L93 Difference]: Finished difference Result 455 states and 1230 transitions. [2022-01-18 15:33:06,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:06,189 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:06,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:06,189 INFO L225 Difference]: With dead ends: 455 [2022-01-18 15:33:06,189 INFO L226 Difference]: Without dead ends: 440 [2022-01-18 15:33:06,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:06,190 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 86 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 244 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:06,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 82 Invalid, 244 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 244 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:06,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 440 states. [2022-01-18 15:33:06,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 440 to 197. [2022-01-18 15:33:06,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 15:33:06,193 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 15:33:06,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:06,193 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 15:33:06,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,193 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 15:33:06,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:06,194 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:06,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:06,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2022-01-18 15:33:06,194 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:06,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:06,194 INFO L85 PathProgramCache]: Analyzing trace with hash -668132585, now seen corresponding path program 84 times [2022-01-18 15:33:06,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:06,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918133921] [2022-01-18 15:33:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:06,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:06,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:06,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:06,242 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:06,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918133921] [2022-01-18 15:33:06,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918133921] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:06,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:06,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:06,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898112639] [2022-01-18 15:33:06,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:06,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:06,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:06,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:06,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:06,243 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:06,357 INFO L93 Difference]: Finished difference Result 422 states and 1158 transitions. [2022-01-18 15:33:06,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:06,358 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:06,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:06,358 INFO L225 Difference]: With dead ends: 422 [2022-01-18 15:33:06,358 INFO L226 Difference]: Without dead ends: 407 [2022-01-18 15:33:06,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:06,359 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 69 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 241 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 241 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:06,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 84 Invalid, 241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 241 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:06,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-01-18 15:33:06,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 200. [2022-01-18 15:33:06,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.959798994974874) internal successors, (589), 199 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 589 transitions. [2022-01-18 15:33:06,362 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 589 transitions. Word has length 17 [2022-01-18 15:33:06,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:06,362 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 589 transitions. [2022-01-18 15:33:06,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,362 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 589 transitions. [2022-01-18 15:33:06,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:06,363 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:06,363 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:06,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2022-01-18 15:33:06,363 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:06,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:06,363 INFO L85 PathProgramCache]: Analyzing trace with hash -1628273253, now seen corresponding path program 85 times [2022-01-18 15:33:06,363 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:06,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910625581] [2022-01-18 15:33:06,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:06,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:06,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:06,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:06,416 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:06,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910625581] [2022-01-18 15:33:06,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910625581] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:06,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:06,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:06,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319307736] [2022-01-18 15:33:06,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:06,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:06,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:06,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:06,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:06,416 INFO L87 Difference]: Start difference. First operand 200 states and 589 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:06,519 INFO L93 Difference]: Finished difference Result 406 states and 1135 transitions. [2022-01-18 15:33:06,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:06,519 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:06,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:06,520 INFO L225 Difference]: With dead ends: 406 [2022-01-18 15:33:06,520 INFO L226 Difference]: Without dead ends: 391 [2022-01-18 15:33:06,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:06,520 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 65 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:06,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 72 Invalid, 212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 212 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:06,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 391 states. [2022-01-18 15:33:06,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 391 to 197. [2022-01-18 15:33:06,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.933673469387755) internal successors, (575), 196 states have internal predecessors, (575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 575 transitions. [2022-01-18 15:33:06,524 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 575 transitions. Word has length 17 [2022-01-18 15:33:06,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:06,524 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 575 transitions. [2022-01-18 15:33:06,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,524 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 575 transitions. [2022-01-18 15:33:06,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:06,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:06,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:06,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2022-01-18 15:33:06,524 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:06,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:06,525 INFO L85 PathProgramCache]: Analyzing trace with hash 1369333755, now seen corresponding path program 86 times [2022-01-18 15:33:06,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:06,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825120] [2022-01-18 15:33:06,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:06,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:06,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:06,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:06,585 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:06,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825120] [2022-01-18 15:33:06,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825120] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:06,585 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:06,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:06,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3381049] [2022-01-18 15:33:06,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:06,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:06,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:06,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:06,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:06,586 INFO L87 Difference]: Start difference. First operand 197 states and 575 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:06,698 INFO L93 Difference]: Finished difference Result 440 states and 1205 transitions. [2022-01-18 15:33:06,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:06,698 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:06,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:06,699 INFO L225 Difference]: With dead ends: 440 [2022-01-18 15:33:06,699 INFO L226 Difference]: Without dead ends: 425 [2022-01-18 15:33:06,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:06,699 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 76 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 225 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:06,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 80 Invalid, 225 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:06,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2022-01-18 15:33:06,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 199. [2022-01-18 15:33:06,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 198 states have (on average 2.9494949494949494) internal successors, (584), 198 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 584 transitions. [2022-01-18 15:33:06,702 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 584 transitions. Word has length 17 [2022-01-18 15:33:06,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:06,702 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 584 transitions. [2022-01-18 15:33:06,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,703 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 584 transitions. [2022-01-18 15:33:06,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:06,703 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:06,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:06,703 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2022-01-18 15:33:06,703 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:06,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1578502785, now seen corresponding path program 87 times [2022-01-18 15:33:06,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:06,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366694825] [2022-01-18 15:33:06,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:06,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:06,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:06,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:06,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:06,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366694825] [2022-01-18 15:33:06,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366694825] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:06,748 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:06,748 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:06,748 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75025344] [2022-01-18 15:33:06,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:06,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:06,749 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:06,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:06,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:06,749 INFO L87 Difference]: Start difference. First operand 199 states and 584 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:06,875 INFO L93 Difference]: Finished difference Result 419 states and 1167 transitions. [2022-01-18 15:33:06,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:06,875 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:06,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:06,876 INFO L225 Difference]: With dead ends: 419 [2022-01-18 15:33:06,876 INFO L226 Difference]: Without dead ends: 404 [2022-01-18 15:33:06,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:06,876 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 57 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 86 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:06,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 86 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:06,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-01-18 15:33:06,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 196. [2022-01-18 15:33:06,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 195 states have (on average 2.917948717948718) internal successors, (569), 195 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 569 transitions. [2022-01-18 15:33:06,879 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 569 transitions. Word has length 17 [2022-01-18 15:33:06,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:06,879 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 569 transitions. [2022-01-18 15:33:06,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:06,880 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 569 transitions. [2022-01-18 15:33:06,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:06,880 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:06,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:06,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2022-01-18 15:33:06,880 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:06,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1118671151, now seen corresponding path program 88 times [2022-01-18 15:33:06,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:06,881 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112679916] [2022-01-18 15:33:06,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:06,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:06,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:06,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:06,919 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112679916] [2022-01-18 15:33:06,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112679916] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:06,919 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:06,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:06,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012232813] [2022-01-18 15:33:06,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:06,920 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:06,920 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:06,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:06,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:06,920 INFO L87 Difference]: Start difference. First operand 196 states and 569 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:07,057 INFO L93 Difference]: Finished difference Result 382 states and 1052 transitions. [2022-01-18 15:33:07,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:07,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:07,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:07,058 INFO L225 Difference]: With dead ends: 382 [2022-01-18 15:33:07,058 INFO L226 Difference]: Without dead ends: 367 [2022-01-18 15:33:07,058 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:07,058 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:07,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:07,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2022-01-18 15:33:07,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 198. [2022-01-18 15:33:07,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 197 states have (on average 2.9238578680203045) internal successors, (576), 197 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 576 transitions. [2022-01-18 15:33:07,062 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 576 transitions. Word has length 17 [2022-01-18 15:33:07,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:07,062 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 576 transitions. [2022-01-18 15:33:07,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,063 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 576 transitions. [2022-01-18 15:33:07,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:07,065 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:07,065 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:07,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2022-01-18 15:33:07,065 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:07,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:07,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1966670413, now seen corresponding path program 89 times [2022-01-18 15:33:07,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:07,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016624176] [2022-01-18 15:33:07,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:07,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:07,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:07,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:07,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016624176] [2022-01-18 15:33:07,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016624176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:07,125 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:07,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:07,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043028514] [2022-01-18 15:33:07,125 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:07,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:07,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:07,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:07,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:07,126 INFO L87 Difference]: Start difference. First operand 198 states and 576 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:07,273 INFO L93 Difference]: Finished difference Result 383 states and 1063 transitions. [2022-01-18 15:33:07,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:07,273 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:07,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:07,274 INFO L225 Difference]: With dead ends: 383 [2022-01-18 15:33:07,274 INFO L226 Difference]: Without dead ends: 368 [2022-01-18 15:33:07,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:07,275 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 68 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:07,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 81 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:07,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2022-01-18 15:33:07,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 200. [2022-01-18 15:33:07,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.9396984924623117) internal successors, (585), 199 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 585 transitions. [2022-01-18 15:33:07,280 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 585 transitions. Word has length 17 [2022-01-18 15:33:07,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:07,280 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 585 transitions. [2022-01-18 15:33:07,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,280 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 585 transitions. [2022-01-18 15:33:07,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-01-18 15:33:07,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:07,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:07,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2022-01-18 15:33:07,281 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:07,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:07,282 INFO L85 PathProgramCache]: Analyzing trace with hash -981166127, now seen corresponding path program 90 times [2022-01-18 15:33:07,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:07,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916215176] [2022-01-18 15:33:07,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:07,282 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:07,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:07,338 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:07,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916215176] [2022-01-18 15:33:07,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916215176] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 15:33:07,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 15:33:07,338 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-01-18 15:33:07,338 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642813710] [2022-01-18 15:33:07,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:07,338 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:07,339 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:07,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:07,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-01-18 15:33:07,339 INFO L87 Difference]: Start difference. First operand 200 states and 585 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:07,475 INFO L93 Difference]: Finished difference Result 362 states and 1025 transitions. [2022-01-18 15:33:07,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:07,476 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-01-18 15:33:07,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:07,476 INFO L225 Difference]: With dead ends: 362 [2022-01-18 15:33:07,476 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 15:33:07,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:07,477 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 56 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 219 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 219 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:07,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 81 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 219 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:07,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 15:33:07,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 195. [2022-01-18 15:33:07,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 195 states, 194 states have (on average 2.9072164948453607) internal successors, (564), 194 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 564 transitions. [2022-01-18 15:33:07,481 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 564 transitions. Word has length 17 [2022-01-18 15:33:07,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:07,481 INFO L470 AbstractCegarLoop]: Abstraction has 195 states and 564 transitions. [2022-01-18 15:33:07,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:07,481 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 564 transitions. [2022-01-18 15:33:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:07,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:07,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:07,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2022-01-18 15:33:07,482 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:07,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:07,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1951800714, now seen corresponding path program 1 times [2022-01-18 15:33:07,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:07,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350100052] [2022-01-18 15:33:07,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:07,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:07,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:07,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:07,587 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:07,587 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350100052] [2022-01-18 15:33:07,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350100052] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:07,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [807306296] [2022-01-18 15:33:07,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:07,588 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:07,588 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:07,590 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:07,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 15:33:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:07,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:07,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:07,867 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:07,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:08,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:08,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [807306296] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:08,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:08,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 18 [2022-01-18 15:33:08,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064184220] [2022-01-18 15:33:08,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:08,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:08,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:08,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:08,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-01-18 15:33:08,089 INFO L87 Difference]: Start difference. First operand 195 states and 564 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:08,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:08,274 INFO L93 Difference]: Finished difference Result 365 states and 1007 transitions. [2022-01-18 15:33:08,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:08,274 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:08,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:08,275 INFO L225 Difference]: With dead ends: 365 [2022-01-18 15:33:08,275 INFO L226 Difference]: Without dead ends: 325 [2022-01-18 15:33:08,275 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2022-01-18 15:33:08,276 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 73 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:08,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 60 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:08,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2022-01-18 15:33:08,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 200. [2022-01-18 15:33:08,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 199 states have (on average 2.899497487437186) internal successors, (577), 199 states have internal predecessors, (577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:08,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 577 transitions. [2022-01-18 15:33:08,280 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 577 transitions. Word has length 18 [2022-01-18 15:33:08,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:08,280 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 577 transitions. [2022-01-18 15:33:08,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 577 transitions. [2022-01-18 15:33:08,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:08,281 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:08,281 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:08,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:08,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable122 [2022-01-18 15:33:08,492 INFO L402 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:08,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:08,492 INFO L85 PathProgramCache]: Analyzing trace with hash 690829094, now seen corresponding path program 1 times [2022-01-18 15:33:08,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:08,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882511739] [2022-01-18 15:33:08,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:08,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:08,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:08,543 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:08,543 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:08,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882511739] [2022-01-18 15:33:08,543 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882511739] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:08,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653604174] [2022-01-18 15:33:08,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:08,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:08,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:08,544 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:08,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 15:33:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:08,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:08,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:08,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:08,691 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:08,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653604174] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:08,845 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:08,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 12 [2022-01-18 15:33:08,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813748764] [2022-01-18 15:33:08,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:08,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:08,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:08,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:08,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:08,847 INFO L87 Difference]: Start difference. First operand 200 states and 577 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:08,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:08,966 INFO L93 Difference]: Finished difference Result 372 states and 1038 transitions. [2022-01-18 15:33:08,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:08,966 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:08,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:08,967 INFO L225 Difference]: With dead ends: 372 [2022-01-18 15:33:08,967 INFO L226 Difference]: Without dead ends: 313 [2022-01-18 15:33:08,967 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:33:08,967 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 58 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:08,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 44 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:08,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-01-18 15:33:08,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 218. [2022-01-18 15:33:08,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 217 states have (on average 2.866359447004608) internal successors, (622), 217 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:08,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 622 transitions. [2022-01-18 15:33:08,973 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 622 transitions. Word has length 18 [2022-01-18 15:33:08,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:08,973 INFO L470 AbstractCegarLoop]: Abstraction has 218 states and 622 transitions. [2022-01-18 15:33:08,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:08,973 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 622 transitions. [2022-01-18 15:33:08,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:08,973 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:08,973 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:08,999 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:09,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable123 [2022-01-18 15:33:09,174 INFO L402 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:09,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:09,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1211921590, now seen corresponding path program 2 times [2022-01-18 15:33:09,175 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:09,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156105857] [2022-01-18 15:33:09,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:09,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:09,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:09,287 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:09,287 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:09,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156105857] [2022-01-18 15:33:09,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156105857] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:09,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552162306] [2022-01-18 15:33:09,288 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:33:09,288 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:09,288 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:09,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:09,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-01-18 15:33:09,323 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:09,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:09,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:09,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:09,435 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:09,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:09,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:09,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552162306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:09,564 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:09,564 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 16 [2022-01-18 15:33:09,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779319133] [2022-01-18 15:33:09,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:09,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:09,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:09,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:09,565 INFO L87 Difference]: Start difference. First operand 218 states and 622 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:10,151 INFO L93 Difference]: Finished difference Result 668 states and 1857 transitions. [2022-01-18 15:33:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 15:33:10,151 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:10,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:10,152 INFO L225 Difference]: With dead ends: 668 [2022-01-18 15:33:10,152 INFO L226 Difference]: Without dead ends: 569 [2022-01-18 15:33:10,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:33:10,152 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 258 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 714 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 216 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:10,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [258 Valid, 216 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 714 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:33:10,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569 states. [2022-01-18 15:33:10,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569 to 246. [2022-01-18 15:33:10,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 245 states have (on average 2.987755102040816) internal successors, (732), 245 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:10,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 732 transitions. [2022-01-18 15:33:10,158 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 732 transitions. Word has length 18 [2022-01-18 15:33:10,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:10,158 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 732 transitions. [2022-01-18 15:33:10,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:10,158 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 732 transitions. [2022-01-18 15:33:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:10,158 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:10,158 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:10,183 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:10,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:10,359 INFO L402 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:10,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:10,359 INFO L85 PathProgramCache]: Analyzing trace with hash -617870236, now seen corresponding path program 3 times [2022-01-18 15:33:10,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:10,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167877198] [2022-01-18 15:33:10,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:10,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:10,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:10,446 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:10,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:10,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167877198] [2022-01-18 15:33:10,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167877198] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:10,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551908205] [2022-01-18 15:33:10,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:33:10,448 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:10,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:10,449 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:10,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-01-18 15:33:10,480 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:33:10,480 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:10,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:10,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:10,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:10,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:10,716 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:10,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551908205] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:10,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:10,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 15 [2022-01-18 15:33:10,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753493955] [2022-01-18 15:33:10,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:10,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:10,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:10,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:10,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:33:10,719 INFO L87 Difference]: Start difference. First operand 246 states and 732 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:10,844 INFO L93 Difference]: Finished difference Result 468 states and 1299 transitions. [2022-01-18 15:33:10,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:10,845 INFO L225 Difference]: With dead ends: 468 [2022-01-18 15:33:10,845 INFO L226 Difference]: Without dead ends: 419 [2022-01-18 15:33:10,845 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2022-01-18 15:33:10,846 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 154 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:10,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 52 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 154 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:10,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 419 states. [2022-01-18 15:33:10,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 419 to 248. [2022-01-18 15:33:10,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 2.9635627530364372) internal successors, (732), 247 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:10,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 732 transitions. [2022-01-18 15:33:10,852 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 732 transitions. Word has length 18 [2022-01-18 15:33:10,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:10,852 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 732 transitions. [2022-01-18 15:33:10,852 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:10,852 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 732 transitions. [2022-01-18 15:33:10,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:10,853 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:10,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:10,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:11,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable125 [2022-01-18 15:33:11,067 INFO L402 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:11,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:11,068 INFO L85 PathProgramCache]: Analyzing trace with hash 267033866, now seen corresponding path program 4 times [2022-01-18 15:33:11,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:11,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118768933] [2022-01-18 15:33:11,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:11,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:11,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:11,158 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118768933] [2022-01-18 15:33:11,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118768933] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:11,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1165669649] [2022-01-18 15:33:11,158 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:33:11,158 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:11,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:11,160 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:11,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-01-18 15:33:11,189 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:33:11,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:11,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:11,191 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:11,292 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:11,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:11,431 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:11,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1165669649] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:11,431 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:11,431 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-01-18 15:33:11,431 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041843463] [2022-01-18 15:33:11,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:11,432 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 15:33:11,432 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:11,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 15:33:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2022-01-18 15:33:11,432 INFO L87 Difference]: Start difference. First operand 248 states and 732 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:11,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:11,716 INFO L93 Difference]: Finished difference Result 470 states and 1309 transitions. [2022-01-18 15:33:11,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:11,716 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:11,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:11,717 INFO L225 Difference]: With dead ends: 470 [2022-01-18 15:33:11,717 INFO L226 Difference]: Without dead ends: 430 [2022-01-18 15:33:11,717 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=417, Unknown=0, NotChecked=0, Total=552 [2022-01-18 15:33:11,717 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 156 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:11,717 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 132 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:11,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-01-18 15:33:11,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 251. [2022-01-18 15:33:11,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 250 states have (on average 2.948) internal successors, (737), 250 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:11,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 737 transitions. [2022-01-18 15:33:11,723 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 737 transitions. Word has length 18 [2022-01-18 15:33:11,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:11,723 INFO L470 AbstractCegarLoop]: Abstraction has 251 states and 737 transitions. [2022-01-18 15:33:11,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:11,723 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 737 transitions. [2022-01-18 15:33:11,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:11,723 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:11,723 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:11,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:11,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable126 [2022-01-18 15:33:11,943 INFO L402 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:11,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:11,944 INFO L85 PathProgramCache]: Analyzing trace with hash -624176268, now seen corresponding path program 5 times [2022-01-18 15:33:11,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:11,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578844472] [2022-01-18 15:33:11,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:11,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:12,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:12,073 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:12,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578844472] [2022-01-18 15:33:12,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578844472] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:12,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832519509] [2022-01-18 15:33:12,074 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:33:12,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:12,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:12,075 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:12,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-01-18 15:33:12,129 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:12,129 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:12,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:12,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:12,244 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:12,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:12,394 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:12,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [832519509] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:12,394 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:12,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 19 [2022-01-18 15:33:12,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581883185] [2022-01-18 15:33:12,394 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:12,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 15:33:12,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:12,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 15:33:12,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2022-01-18 15:33:12,395 INFO L87 Difference]: Start difference. First operand 251 states and 737 transitions. Second operand has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:12,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:12,660 INFO L93 Difference]: Finished difference Result 441 states and 1216 transitions. [2022-01-18 15:33:12,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:12,661 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:12,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:12,661 INFO L225 Difference]: With dead ends: 441 [2022-01-18 15:33:12,661 INFO L226 Difference]: Without dead ends: 410 [2022-01-18 15:33:12,662 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=132, Invalid=420, Unknown=0, NotChecked=0, Total=552 [2022-01-18 15:33:12,662 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 154 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:12,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 135 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:12,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2022-01-18 15:33:12,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 254. [2022-01-18 15:33:12,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 253 states have (on average 2.932806324110672) internal successors, (742), 253 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:12,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 742 transitions. [2022-01-18 15:33:12,668 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 742 transitions. Word has length 18 [2022-01-18 15:33:12,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:12,668 INFO L470 AbstractCegarLoop]: Abstraction has 254 states and 742 transitions. [2022-01-18 15:33:12,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.4210526315789473) internal successors, (46), 19 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:12,668 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 742 transitions. [2022-01-18 15:33:12,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:12,668 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:12,668 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:12,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:12,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:12,871 INFO L402 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:12,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:12,872 INFO L85 PathProgramCache]: Analyzing trace with hash -30124914, now seen corresponding path program 6 times [2022-01-18 15:33:12,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:12,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285859400] [2022-01-18 15:33:12,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:12,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:12,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:12,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:12,942 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:12,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285859400] [2022-01-18 15:33:12,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285859400] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:12,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092371046] [2022-01-18 15:33:12,942 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:33:12,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:12,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:12,944 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:12,944 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-01-18 15:33:12,967 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:33:12,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:12,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:12,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:13,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:13,070 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:13,173 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:13,173 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092371046] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:13,173 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:13,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 6] total 15 [2022-01-18 15:33:13,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [427098967] [2022-01-18 15:33:13,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:13,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:13,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:33:13,174 INFO L87 Difference]: Start difference. First operand 254 states and 742 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:13,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:13,268 INFO L93 Difference]: Finished difference Result 368 states and 1044 transitions. [2022-01-18 15:33:13,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:13,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:13,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:13,269 INFO L225 Difference]: With dead ends: 368 [2022-01-18 15:33:13,269 INFO L226 Difference]: Without dead ends: 314 [2022-01-18 15:33:13,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2022-01-18 15:33:13,270 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 49 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 149 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:13,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 45 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 149 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:13,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2022-01-18 15:33:13,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 248. [2022-01-18 15:33:13,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 247 states have (on average 3.0040485829959516) internal successors, (742), 247 states have internal predecessors, (742), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:13,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 742 transitions. [2022-01-18 15:33:13,274 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 742 transitions. Word has length 18 [2022-01-18 15:33:13,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:13,274 INFO L470 AbstractCegarLoop]: Abstraction has 248 states and 742 transitions. [2022-01-18 15:33:13,274 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:13,274 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 742 transitions. [2022-01-18 15:33:13,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:13,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:13,274 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:13,290 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:13,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:13,475 INFO L402 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:13,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:13,475 INFO L85 PathProgramCache]: Analyzing trace with hash 1478642185, now seen corresponding path program 1 times [2022-01-18 15:33:13,475 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:13,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655229816] [2022-01-18 15:33:13,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:13,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:13,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:13,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:13,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655229816] [2022-01-18 15:33:13,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655229816] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:13,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678580010] [2022-01-18 15:33:13,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:13,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:13,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:13,534 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:13,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-01-18 15:33:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:13,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:13,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:13,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:13,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:13,887 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:13,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678580010] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:13,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:13,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 15:33:13,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158159165] [2022-01-18 15:33:13,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:13,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:13,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:13,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:13,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:13,888 INFO L87 Difference]: Start difference. First operand 248 states and 742 transitions. Second operand has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:14,046 INFO L93 Difference]: Finished difference Result 454 states and 1329 transitions. [2022-01-18 15:33:14,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:14,047 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:14,047 INFO L225 Difference]: With dead ends: 454 [2022-01-18 15:33:14,047 INFO L226 Difference]: Without dead ends: 435 [2022-01-18 15:33:14,047 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=306, Unknown=0, NotChecked=0, Total=420 [2022-01-18 15:33:14,048 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 127 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 320 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 320 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:14,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 97 Invalid, 332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 320 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:14,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 435 states. [2022-01-18 15:33:14,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 435 to 261. [2022-01-18 15:33:14,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 260 states have (on average 3.042307692307692) internal successors, (791), 260 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:14,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 791 transitions. [2022-01-18 15:33:14,053 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 791 transitions. Word has length 18 [2022-01-18 15:33:14,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:14,053 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 791 transitions. [2022-01-18 15:33:14,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.3125) internal successors, (37), 16 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:14,053 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 791 transitions. [2022-01-18 15:33:14,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:14,054 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:14,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:14,082 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:14,276 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable129 [2022-01-18 15:33:14,277 INFO L402 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:14,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:14,277 INFO L85 PathProgramCache]: Analyzing trace with hash -711139859, now seen corresponding path program 2 times [2022-01-18 15:33:14,277 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:14,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33371390] [2022-01-18 15:33:14,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:14,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:14,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:14,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:14,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:14,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33371390] [2022-01-18 15:33:14,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [33371390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:14,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484735902] [2022-01-18 15:33:14,302 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:33:14,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:14,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:14,303 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:14,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-01-18 15:33:14,341 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:14,341 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:14,341 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:14,342 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:14,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:14,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:14,452 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:14,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484735902] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:14,453 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:14,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 7 [2022-01-18 15:33:14,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450159960] [2022-01-18 15:33:14,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 15:33:14,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:14,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 15:33:14,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 15:33:14,454 INFO L87 Difference]: Start difference. First operand 261 states and 791 transitions. Second operand has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:14,559 INFO L93 Difference]: Finished difference Result 437 states and 1302 transitions. [2022-01-18 15:33:14,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:14,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:14,560 INFO L225 Difference]: With dead ends: 437 [2022-01-18 15:33:14,560 INFO L226 Difference]: Without dead ends: 393 [2022-01-18 15:33:14,561 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:33:14,561 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 48 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:14,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 57 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:14,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-01-18 15:33:14,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 277. [2022-01-18 15:33:14,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 3.0543478260869565) internal successors, (843), 276 states have internal predecessors, (843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:14,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 843 transitions. [2022-01-18 15:33:14,566 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 843 transitions. Word has length 18 [2022-01-18 15:33:14,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:14,566 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 843 transitions. [2022-01-18 15:33:14,567 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:14,567 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 843 transitions. [2022-01-18 15:33:14,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:14,567 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:14,567 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:14,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:14,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:14,783 INFO L402 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:14,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:14,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1138956040, now seen corresponding path program 7 times [2022-01-18 15:33:14,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:14,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296093595] [2022-01-18 15:33:14,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:14,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:14,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:14,851 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:14,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296093595] [2022-01-18 15:33:14,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296093595] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:14,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105211565] [2022-01-18 15:33:14,851 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:33:14,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:14,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:14,852 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:14,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-01-18 15:33:14,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:14,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:14,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:14,989 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:14,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:15,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:15,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105211565] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:15,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:15,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 15:33:15,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928041302] [2022-01-18 15:33:15,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:15,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:15,171 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:15,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:15,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:15,172 INFO L87 Difference]: Start difference. First operand 277 states and 843 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:15,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:15,370 INFO L93 Difference]: Finished difference Result 557 states and 1551 transitions. [2022-01-18 15:33:15,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:15,370 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:15,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:15,371 INFO L225 Difference]: With dead ends: 557 [2022-01-18 15:33:15,371 INFO L226 Difference]: Without dead ends: 517 [2022-01-18 15:33:15,371 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2022-01-18 15:33:15,372 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 82 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:15,372 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 73 Invalid, 204 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:15,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 517 states. [2022-01-18 15:33:15,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 517 to 284. [2022-01-18 15:33:15,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 3.060070671378092) internal successors, (866), 283 states have internal predecessors, (866), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:15,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 866 transitions. [2022-01-18 15:33:15,378 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 866 transitions. Word has length 18 [2022-01-18 15:33:15,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:15,378 INFO L470 AbstractCegarLoop]: Abstraction has 284 states and 866 transitions. [2022-01-18 15:33:15,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:15,379 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 866 transitions. [2022-01-18 15:33:15,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:15,379 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:15,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:15,395 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:15,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable131 [2022-01-18 15:33:15,583 INFO L402 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:15,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:15,583 INFO L85 PathProgramCache]: Analyzing trace with hash -122015580, now seen corresponding path program 2 times [2022-01-18 15:33:15,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:15,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837052824] [2022-01-18 15:33:15,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:15,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:15,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:15,627 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:15,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:15,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837052824] [2022-01-18 15:33:15,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837052824] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:15,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442103520] [2022-01-18 15:33:15,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:33:15,628 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:15,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:15,629 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:15,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-01-18 15:33:15,663 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:15,663 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:15,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:15,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:15,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:15,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:15,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442103520] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:15,856 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:15,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-01-18 15:33:15,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350785947] [2022-01-18 15:33:15,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:15,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:15,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:15,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:15,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:15,857 INFO L87 Difference]: Start difference. First operand 284 states and 866 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:15,957 INFO L93 Difference]: Finished difference Result 566 states and 1626 transitions. [2022-01-18 15:33:15,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:15,957 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:15,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:15,958 INFO L225 Difference]: With dead ends: 566 [2022-01-18 15:33:15,958 INFO L226 Difference]: Without dead ends: 505 [2022-01-18 15:33:15,958 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2022-01-18 15:33:15,959 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 66 mSDsluCounter, 87 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:15,959 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 42 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:15,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 505 states. [2022-01-18 15:33:15,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 505 to 300. [2022-01-18 15:33:15,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 299 states have (on average 3.120401337792642) internal successors, (933), 299 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:15,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 933 transitions. [2022-01-18 15:33:15,966 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 933 transitions. Word has length 18 [2022-01-18 15:33:15,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:15,966 INFO L470 AbstractCegarLoop]: Abstraction has 300 states and 933 transitions. [2022-01-18 15:33:15,966 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:15,966 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 933 transitions. [2022-01-18 15:33:15,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:15,967 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:15,967 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:15,991 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:16,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:16,179 INFO L402 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:16,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:16,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1323652908, now seen corresponding path program 8 times [2022-01-18 15:33:16,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:16,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550229156] [2022-01-18 15:33:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:16,180 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:16,223 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:16,223 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550229156] [2022-01-18 15:33:16,223 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550229156] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:16,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1334820755] [2022-01-18 15:33:16,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:33:16,224 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:16,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:16,225 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:16,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-01-18 15:33:16,259 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:16,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:16,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:16,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:16,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:16,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:16,436 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:16,436 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1334820755] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:16,436 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:16,436 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-01-18 15:33:16,436 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520680851] [2022-01-18 15:33:16,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:16,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:16,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:16,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:16,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:16,437 INFO L87 Difference]: Start difference. First operand 300 states and 933 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:16,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:16,528 INFO L93 Difference]: Finished difference Result 439 states and 1262 transitions. [2022-01-18 15:33:16,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:16,529 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:16,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:16,529 INFO L225 Difference]: With dead ends: 439 [2022-01-18 15:33:16,529 INFO L226 Difference]: Without dead ends: 381 [2022-01-18 15:33:16,529 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-01-18 15:33:16,530 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:16,530 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 37 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:16,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2022-01-18 15:33:16,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 296. [2022-01-18 15:33:16,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0406779661016947) internal successors, (897), 295 states have internal predecessors, (897), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:16,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 897 transitions. [2022-01-18 15:33:16,534 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 897 transitions. Word has length 18 [2022-01-18 15:33:16,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:16,534 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 897 transitions. [2022-01-18 15:33:16,534 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:16,534 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 897 transitions. [2022-01-18 15:33:16,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:16,534 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:16,534 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:16,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:16,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable133 [2022-01-18 15:33:16,735 INFO L402 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:16,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:16,735 INFO L85 PathProgramCache]: Analyzing trace with hash -643487665, now seen corresponding path program 3 times [2022-01-18 15:33:16,735 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:16,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313126006] [2022-01-18 15:33:16,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:16,736 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:16,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:16,793 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:16,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:16,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313126006] [2022-01-18 15:33:16,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313126006] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:16,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127535097] [2022-01-18 15:33:16,793 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:33:16,794 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:16,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:16,795 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:16,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-01-18 15:33:16,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:33:16,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:16,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:16,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:16,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:16,938 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:17,056 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:17,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1127535097] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:17,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:17,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 15:33:17,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449559390] [2022-01-18 15:33:17,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:17,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:17,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:17,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:17,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:17,057 INFO L87 Difference]: Start difference. First operand 296 states and 897 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:17,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:17,225 INFO L93 Difference]: Finished difference Result 438 states and 1244 transitions. [2022-01-18 15:33:17,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:17,225 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:17,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:17,226 INFO L225 Difference]: With dead ends: 438 [2022-01-18 15:33:17,226 INFO L226 Difference]: Without dead ends: 415 [2022-01-18 15:33:17,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-01-18 15:33:17,226 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 87 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 193 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:17,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 63 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 193 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:17,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2022-01-18 15:33:17,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 308. [2022-01-18 15:33:17,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 3.0) internal successors, (921), 307 states have internal predecessors, (921), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:17,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 921 transitions. [2022-01-18 15:33:17,232 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 921 transitions. Word has length 18 [2022-01-18 15:33:17,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:17,232 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 921 transitions. [2022-01-18 15:33:17,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:17,232 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 921 transitions. [2022-01-18 15:33:17,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:17,232 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:17,232 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:17,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:17,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable134 [2022-01-18 15:33:17,446 INFO L402 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:17,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:17,447 INFO L85 PathProgramCache]: Analyzing trace with hash -1235680749, now seen corresponding path program 4 times [2022-01-18 15:33:17,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:17,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411524034] [2022-01-18 15:33:17,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:17,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:17,511 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:17,511 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:17,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411524034] [2022-01-18 15:33:17,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411524034] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:17,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53876770] [2022-01-18 15:33:17,511 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:33:17,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:17,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:17,512 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:17,513 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-01-18 15:33:17,538 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:33:17,538 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:17,539 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:17,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:17,630 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:17,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:17,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:17,730 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53876770] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:17,730 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:17,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 15:33:17,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554980712] [2022-01-18 15:33:17,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:17,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:17,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:17,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:17,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:17,731 INFO L87 Difference]: Start difference. First operand 308 states and 921 transitions. Second operand has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:17,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:17,985 INFO L93 Difference]: Finished difference Result 413 states and 1192 transitions. [2022-01-18 15:33:17,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:17,985 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:17,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:17,986 INFO L225 Difference]: With dead ends: 413 [2022-01-18 15:33:17,986 INFO L226 Difference]: Without dead ends: 379 [2022-01-18 15:33:17,986 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-01-18 15:33:17,986 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 106 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 353 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:17,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 111 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 353 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:17,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2022-01-18 15:33:17,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 296. [2022-01-18 15:33:17,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 3.0338983050847457) internal successors, (895), 295 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 895 transitions. [2022-01-18 15:33:17,992 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 895 transitions. Word has length 18 [2022-01-18 15:33:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:17,992 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 895 transitions. [2022-01-18 15:33:17,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.25) internal successors, (36), 16 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:17,992 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 895 transitions. [2022-01-18 15:33:17,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:17,993 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:17,993 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:18,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:18,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:18,203 INFO L402 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:18,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:18,204 INFO L85 PathProgramCache]: Analyzing trace with hash -34208214, now seen corresponding path program 3 times [2022-01-18 15:33:18,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:18,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564014705] [2022-01-18 15:33:18,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:18,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:18,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:18,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:18,248 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:18,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564014705] [2022-01-18 15:33:18,248 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564014705] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:18,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203520196] [2022-01-18 15:33:18,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:33:18,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:18,249 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:18,250 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:18,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-01-18 15:33:18,279 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:33:18,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:18,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:18,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:18,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:18,552 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:18,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203520196] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:18,553 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:18,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-01-18 15:33:18,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195785012] [2022-01-18 15:33:18,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:18,553 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:18,553 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:18,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:18,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:18,554 INFO L87 Difference]: Start difference. First operand 296 states and 895 transitions. Second operand has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:18,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:18,747 INFO L93 Difference]: Finished difference Result 481 states and 1359 transitions. [2022-01-18 15:33:18,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 15:33:18,747 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:18,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:18,748 INFO L225 Difference]: With dead ends: 481 [2022-01-18 15:33:18,748 INFO L226 Difference]: Without dead ends: 403 [2022-01-18 15:33:18,748 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-01-18 15:33:18,748 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 157 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:18,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 108 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 330 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:18,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 403 states. [2022-01-18 15:33:18,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 403 to 294. [2022-01-18 15:33:18,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 294 states, 293 states have (on average 3.0204778156996586) internal successors, (885), 293 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:18,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 885 transitions. [2022-01-18 15:33:18,752 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 885 transitions. Word has length 18 [2022-01-18 15:33:18,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:18,752 INFO L470 AbstractCegarLoop]: Abstraction has 294 states and 885 transitions. [2022-01-18 15:33:18,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.6875) internal successors, (43), 16 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:18,752 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 885 transitions. [2022-01-18 15:33:18,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:18,753 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:18,753 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:18,770 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:18,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable136 [2022-01-18 15:33:18,959 INFO L402 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1601323667, now seen corresponding path program 5 times [2022-01-18 15:33:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665876070] [2022-01-18 15:33:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:18,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:18,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:19,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:19,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665876070] [2022-01-18 15:33:19,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665876070] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:19,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005259850] [2022-01-18 15:33:19,006 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:33:19,006 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:19,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:19,007 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:19,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-01-18 15:33:19,037 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:19,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:19,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:19,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:19,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:19,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005259850] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:19,203 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:19,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 10 [2022-01-18 15:33:19,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81045870] [2022-01-18 15:33:19,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:19,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:19,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:19,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:19,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:33:19,204 INFO L87 Difference]: Start difference. First operand 294 states and 885 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:19,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:19,280 INFO L93 Difference]: Finished difference Result 433 states and 1284 transitions. [2022-01-18 15:33:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:19,281 INFO L225 Difference]: With dead ends: 433 [2022-01-18 15:33:19,281 INFO L226 Difference]: Without dead ends: 390 [2022-01-18 15:33:19,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:19,281 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 53 mSDsluCounter, 71 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:19,281 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 33 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:19,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-01-18 15:33:19,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 320. [2022-01-18 15:33:19,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 3.0564263322884013) internal successors, (975), 319 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:19,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 975 transitions. [2022-01-18 15:33:19,285 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 975 transitions. Word has length 18 [2022-01-18 15:33:19,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:19,285 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 975 transitions. [2022-01-18 15:33:19,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:19,285 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 975 transitions. [2022-01-18 15:33:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:19,286 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:19,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:19,307 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:19,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable137 [2022-01-18 15:33:19,508 INFO L402 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:19,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:19,508 INFO L85 PathProgramCache]: Analyzing trace with hash 531772977, now seen corresponding path program 6 times [2022-01-18 15:33:19,508 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:19,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102816825] [2022-01-18 15:33:19,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:19,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:19,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:19,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:19,546 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:19,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102816825] [2022-01-18 15:33:19,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102816825] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:19,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481317833] [2022-01-18 15:33:19,546 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:33:19,546 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:19,546 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:19,547 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:19,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-01-18 15:33:19,570 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:33:19,570 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:19,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:19,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:19,683 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:19,683 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:19,866 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:19,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481317833] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:19,866 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:19,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-01-18 15:33:19,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504701511] [2022-01-18 15:33:19,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:19,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 15:33:19,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:19,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 15:33:19,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:33:19,867 INFO L87 Difference]: Start difference. First operand 320 states and 975 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:20,150 INFO L93 Difference]: Finished difference Result 618 states and 1767 transitions. [2022-01-18 15:33:20,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:33:20,151 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:20,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:20,151 INFO L225 Difference]: With dead ends: 618 [2022-01-18 15:33:20,152 INFO L226 Difference]: Without dead ends: 494 [2022-01-18 15:33:20,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2022-01-18 15:33:20,152 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 142 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 167 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:20,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 167 Invalid, 511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:20,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2022-01-18 15:33:20,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 307. [2022-01-18 15:33:20,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 3.0326797385620914) internal successors, (928), 306 states have internal predecessors, (928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:20,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 928 transitions. [2022-01-18 15:33:20,156 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 928 transitions. Word has length 18 [2022-01-18 15:33:20,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:20,156 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 928 transitions. [2022-01-18 15:33:20,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:20,156 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 928 transitions. [2022-01-18 15:33:20,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:20,157 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:20,157 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:20,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:20,357 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:20,358 INFO L402 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:20,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:20,358 INFO L85 PathProgramCache]: Analyzing trace with hash -90982872, now seen corresponding path program 9 times [2022-01-18 15:33:20,358 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:20,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899769884] [2022-01-18 15:33:20,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:20,358 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:20,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:20,413 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899769884] [2022-01-18 15:33:20,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899769884] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:20,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1603982390] [2022-01-18 15:33:20,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:33:20,414 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:20,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:20,415 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:20,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-01-18 15:33:20,444 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:33:20,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:20,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:20,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:20,510 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:20,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:20,570 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:20,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1603982390] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:20,570 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:20,570 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-01-18 15:33:20,570 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729198577] [2022-01-18 15:33:20,570 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:20,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 15:33:20,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:20,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 15:33:20,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2022-01-18 15:33:20,571 INFO L87 Difference]: Start difference. First operand 307 states and 928 transitions. Second operand has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:20,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:20,923 INFO L93 Difference]: Finished difference Result 718 states and 2053 transitions. [2022-01-18 15:33:20,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:33:20,923 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:20,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:20,924 INFO L225 Difference]: With dead ends: 718 [2022-01-18 15:33:20,924 INFO L226 Difference]: Without dead ends: 592 [2022-01-18 15:33:20,924 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-01-18 15:33:20,924 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 208 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:20,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 202 Invalid, 636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:20,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2022-01-18 15:33:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 310. [2022-01-18 15:33:20,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0226537216828477) internal successors, (934), 309 states have internal predecessors, (934), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:20,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 934 transitions. [2022-01-18 15:33:20,929 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 934 transitions. Word has length 18 [2022-01-18 15:33:20,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:20,929 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 934 transitions. [2022-01-18 15:33:20,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.857142857142857) internal successors, (40), 14 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:20,929 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 934 transitions. [2022-01-18 15:33:20,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:20,930 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:20,930 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:20,945 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 15:33:21,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:21,130 INFO L402 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash 724975432, now seen corresponding path program 10 times [2022-01-18 15:33:21,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:21,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658173826] [2022-01-18 15:33:21,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:21,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:21,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:21,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:21,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:21,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658173826] [2022-01-18 15:33:21,207 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658173826] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:21,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653565823] [2022-01-18 15:33:21,207 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:33:21,207 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:21,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:21,208 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:21,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-01-18 15:33:21,230 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:33:21,230 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:21,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:21,231 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:21,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:21,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:21,485 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:21,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653565823] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:21,485 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:21,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 8] total 18 [2022-01-18 15:33:21,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009254378] [2022-01-18 15:33:21,485 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:21,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 15:33:21,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:21,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 15:33:21,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=256, Unknown=0, NotChecked=0, Total=306 [2022-01-18 15:33:21,486 INFO L87 Difference]: Start difference. First operand 310 states and 934 transitions. Second operand has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:21,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:21,732 INFO L93 Difference]: Finished difference Result 549 states and 1571 transitions. [2022-01-18 15:33:21,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:21,733 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:21,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:21,733 INFO L225 Difference]: With dead ends: 549 [2022-01-18 15:33:21,733 INFO L226 Difference]: Without dead ends: 512 [2022-01-18 15:33:21,734 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=108, Invalid=354, Unknown=0, NotChecked=0, Total=462 [2022-01-18 15:33:21,734 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 131 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 415 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:21,734 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 142 Invalid, 415 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 406 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:21,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-01-18 15:33:21,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 310. [2022-01-18 15:33:21,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 3.0194174757281553) internal successors, (933), 309 states have internal predecessors, (933), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:21,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 933 transitions. [2022-01-18 15:33:21,738 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 933 transitions. Word has length 18 [2022-01-18 15:33:21,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:21,739 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 933 transitions. [2022-01-18 15:33:21,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.388888888888889) internal successors, (43), 18 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:21,739 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 933 transitions. [2022-01-18 15:33:21,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:21,739 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:21,739 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:21,762 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-01-18 15:33:21,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:21,955 INFO L402 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:21,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:21,956 INFO L85 PathProgramCache]: Analyzing trace with hash 632739358, now seen corresponding path program 11 times [2022-01-18 15:33:21,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:21,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714226463] [2022-01-18 15:33:21,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:21,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:22,023 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:22,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:22,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714226463] [2022-01-18 15:33:22,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714226463] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:22,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [595547106] [2022-01-18 15:33:22,023 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:33:22,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:22,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:22,024 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:22,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-01-18 15:33:22,060 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:22,061 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:22,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:22,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:22,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:22,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:22,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:22,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [595547106] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:22,367 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:22,367 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 15:33:22,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194436270] [2022-01-18 15:33:22,368 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:22,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:22,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:22,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:22,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:22,368 INFO L87 Difference]: Start difference. First operand 310 states and 933 transitions. Second operand has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:22,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:22,601 INFO L93 Difference]: Finished difference Result 552 states and 1552 transitions. [2022-01-18 15:33:22,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:22,601 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:22,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:22,602 INFO L225 Difference]: With dead ends: 552 [2022-01-18 15:33:22,602 INFO L226 Difference]: Without dead ends: 521 [2022-01-18 15:33:22,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-01-18 15:33:22,602 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 369 mSDsCounter, 0 mSdLazyCounter, 548 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 548 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:22,602 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 186 Invalid, 552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 548 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:22,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-01-18 15:33:22,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 313. [2022-01-18 15:33:22,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 3.0288461538461537) internal successors, (945), 312 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:22,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 945 transitions. [2022-01-18 15:33:22,607 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 945 transitions. Word has length 18 [2022-01-18 15:33:22,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:22,607 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 945 transitions. [2022-01-18 15:33:22,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.625) internal successors, (42), 16 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:22,607 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 945 transitions. [2022-01-18 15:33:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:22,607 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:22,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:22,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-01-18 15:33:22,807 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:22,808 INFO L402 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:22,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:22,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1677277118, now seen corresponding path program 12 times [2022-01-18 15:33:22,808 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:22,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97051022] [2022-01-18 15:33:22,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:22,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:22,840 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:22,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:22,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97051022] [2022-01-18 15:33:22,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97051022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:22,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764957924] [2022-01-18 15:33:22,840 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:33:22,840 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:22,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:22,841 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:22,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-01-18 15:33:22,864 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:33:22,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:22,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:22,865 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:22,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:22,942 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:23,011 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764957924] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:23,011 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:23,011 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2022-01-18 15:33:23,011 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77721563] [2022-01-18 15:33:23,011 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:23,011 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 15:33:23,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:23,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 15:33:23,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-01-18 15:33:23,011 INFO L87 Difference]: Start difference. First operand 313 states and 945 transitions. Second operand has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:23,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:23,119 INFO L93 Difference]: Finished difference Result 451 states and 1311 transitions. [2022-01-18 15:33:23,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:23,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:23,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:23,120 INFO L225 Difference]: With dead ends: 451 [2022-01-18 15:33:23,120 INFO L226 Difference]: Without dead ends: 402 [2022-01-18 15:33:23,120 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:23,121 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 52 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:23,121 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 69 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:23,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 402 states. [2022-01-18 15:33:23,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 402 to 275. [2022-01-18 15:33:23,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 275 states, 274 states have (on average 2.9708029197080292) internal successors, (814), 274 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:23,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 814 transitions. [2022-01-18 15:33:23,125 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 814 transitions. Word has length 18 [2022-01-18 15:33:23,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:23,125 INFO L470 AbstractCegarLoop]: Abstraction has 275 states and 814 transitions. [2022-01-18 15:33:23,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.4444444444444446) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:23,125 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 814 transitions. [2022-01-18 15:33:23,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:23,125 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:23,125 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:23,141 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:23,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:23,326 INFO L402 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:23,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:23,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1009718582, now seen corresponding path program 4 times [2022-01-18 15:33:23,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:23,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1896768585] [2022-01-18 15:33:23,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:23,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:23,369 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:23,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:23,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1896768585] [2022-01-18 15:33:23,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1896768585] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:23,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859619353] [2022-01-18 15:33:23,370 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:33:23,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:23,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:23,371 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:23,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-01-18 15:33:23,402 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:33:23,402 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:23,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:23,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:23,496 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:23,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:23,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:23,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859619353] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:23,573 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:23,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-01-18 15:33:23,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400728189] [2022-01-18 15:33:23,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:23,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:23,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:23,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:23,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:23,574 INFO L87 Difference]: Start difference. First operand 275 states and 814 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:23,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:23,660 INFO L93 Difference]: Finished difference Result 382 states and 1100 transitions. [2022-01-18 15:33:23,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:23,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:23,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:23,661 INFO L225 Difference]: With dead ends: 382 [2022-01-18 15:33:23,661 INFO L226 Difference]: Without dead ends: 321 [2022-01-18 15:33:23,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-18 15:33:23,661 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 60 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:23,661 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 39 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-01-18 15:33:23,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 285. [2022-01-18 15:33:23,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 284 states have (on average 2.943661971830986) internal successors, (836), 284 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:23,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 836 transitions. [2022-01-18 15:33:23,666 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 836 transitions. Word has length 18 [2022-01-18 15:33:23,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:23,666 INFO L470 AbstractCegarLoop]: Abstraction has 285 states and 836 transitions. [2022-01-18 15:33:23,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:23,666 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 836 transitions. [2022-01-18 15:33:23,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:23,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:23,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:23,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:23,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:23,884 INFO L402 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:23,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:23,885 INFO L85 PathProgramCache]: Analyzing trace with hash -921911216, now seen corresponding path program 5 times [2022-01-18 15:33:23,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:23,885 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120678228] [2022-01-18 15:33:23,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:23,885 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:23,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:23,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:23,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120678228] [2022-01-18 15:33:23,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2120678228] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:23,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754216706] [2022-01-18 15:33:23,922 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:33:23,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:23,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:23,924 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:23,924 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-01-18 15:33:23,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:23,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:23,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:23,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:24,006 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:24,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:24,084 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:24,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1754216706] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:24,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:24,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 10 [2022-01-18 15:33:24,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98878857] [2022-01-18 15:33:24,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:24,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 15:33:24,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:24,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 15:33:24,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:33:24,085 INFO L87 Difference]: Start difference. First operand 285 states and 836 transitions. Second operand has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:24,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:24,180 INFO L93 Difference]: Finished difference Result 392 states and 1114 transitions. [2022-01-18 15:33:24,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:24,180 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:24,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:24,180 INFO L225 Difference]: With dead ends: 392 [2022-01-18 15:33:24,180 INFO L226 Difference]: Without dead ends: 337 [2022-01-18 15:33:24,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-01-18 15:33:24,181 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 84 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:24,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [84 Valid, 59 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:24,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2022-01-18 15:33:24,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 274. [2022-01-18 15:33:24,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.93040293040293) internal successors, (800), 273 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 800 transitions. [2022-01-18 15:33:24,184 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 800 transitions. Word has length 18 [2022-01-18 15:33:24,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:24,184 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 800 transitions. [2022-01-18 15:33:24,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.5) internal successors, (35), 10 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:24,184 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 800 transitions. [2022-01-18 15:33:24,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:24,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:24,185 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:24,200 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2022-01-18 15:33:24,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:24,385 INFO L402 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:24,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:24,386 INFO L85 PathProgramCache]: Analyzing trace with hash 2033870275, now seen corresponding path program 7 times [2022-01-18 15:33:24,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:24,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38218634] [2022-01-18 15:33:24,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:24,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:24,455 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:24,455 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:24,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38218634] [2022-01-18 15:33:24,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38218634] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:24,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2075402053] [2022-01-18 15:33:24,455 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:33:24,455 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:24,455 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:24,456 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:24,457 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-01-18 15:33:24,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:24,479 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:24,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:24,568 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:24,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:24,685 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:24,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2075402053] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:24,686 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:24,686 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 15:33:24,686 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500776660] [2022-01-18 15:33:24,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:24,686 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:24,686 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:24,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:24,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:24,687 INFO L87 Difference]: Start difference. First operand 274 states and 800 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:24,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:24,837 INFO L93 Difference]: Finished difference Result 374 states and 1011 transitions. [2022-01-18 15:33:24,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:24,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:24,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:24,838 INFO L225 Difference]: With dead ends: 374 [2022-01-18 15:33:24,838 INFO L226 Difference]: Without dead ends: 347 [2022-01-18 15:33:24,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=335, Unknown=0, NotChecked=0, Total=420 [2022-01-18 15:33:24,839 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 71 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 213 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:24,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 72 Invalid, 215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 213 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:24,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-01-18 15:33:24,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 276. [2022-01-18 15:33:24,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 2.92) internal successors, (803), 275 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:24,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 803 transitions. [2022-01-18 15:33:24,843 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 803 transitions. Word has length 18 [2022-01-18 15:33:24,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:24,843 INFO L470 AbstractCegarLoop]: Abstraction has 276 states and 803 transitions. [2022-01-18 15:33:24,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:24,843 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 803 transitions. [2022-01-18 15:33:24,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:24,843 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:24,843 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:24,859 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:25,044 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable145 [2022-01-18 15:33:25,044 INFO L402 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:25,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:25,044 INFO L85 PathProgramCache]: Analyzing trace with hash 824244543, now seen corresponding path program 8 times [2022-01-18 15:33:25,044 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:25,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768423670] [2022-01-18 15:33:25,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:25,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:25,110 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:25,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:25,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768423670] [2022-01-18 15:33:25,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768423670] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:25,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [794781792] [2022-01-18 15:33:25,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:33:25,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:25,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:25,112 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:25,112 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-01-18 15:33:25,135 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:25,135 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:25,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:25,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:25,230 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:25,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:25,367 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:25,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [794781792] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:25,367 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:25,368 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 16 [2022-01-18 15:33:25,368 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981405955] [2022-01-18 15:33:25,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:25,368 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 15:33:25,368 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:25,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 15:33:25,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:25,368 INFO L87 Difference]: Start difference. First operand 276 states and 803 transitions. Second operand has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:25,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:25,512 INFO L93 Difference]: Finished difference Result 366 states and 993 transitions. [2022-01-18 15:33:25,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:25,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:25,512 INFO L225 Difference]: With dead ends: 366 [2022-01-18 15:33:25,512 INFO L226 Difference]: Without dead ends: 343 [2022-01-18 15:33:25,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=86, Invalid=334, Unknown=0, NotChecked=0, Total=420 [2022-01-18 15:33:25,513 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 81 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 186 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:25,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 68 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 186 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:25,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2022-01-18 15:33:25,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 280. [2022-01-18 15:33:25,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.913978494623656) internal successors, (813), 279 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:25,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 813 transitions. [2022-01-18 15:33:25,517 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 813 transitions. Word has length 18 [2022-01-18 15:33:25,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:25,517 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 813 transitions. [2022-01-18 15:33:25,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.25) internal successors, (18), 8 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 813 transitions. [2022-01-18 15:33:25,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:25,529 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:25,529 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:25,545 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:25,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable146 [2022-01-18 15:33:25,731 INFO L402 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:25,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:25,732 INFO L85 PathProgramCache]: Analyzing trace with hash 232051459, now seen corresponding path program 9 times [2022-01-18 15:33:25,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:25,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949066562] [2022-01-18 15:33:25,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:25,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:25,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:25,804 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949066562] [2022-01-18 15:33:25,804 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949066562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:25,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116002139] [2022-01-18 15:33:25,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:33:25,804 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:25,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:25,805 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:25,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-01-18 15:33:25,828 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:33:25,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:25,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:25,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:25,918 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:25,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:26,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:26,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [116002139] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:26,019 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:26,019 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 16 [2022-01-18 15:33:26,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740143347] [2022-01-18 15:33:26,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:26,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:26,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:26,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:26,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:26,019 INFO L87 Difference]: Start difference. First operand 280 states and 813 transitions. Second operand has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:26,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:26,217 INFO L93 Difference]: Finished difference Result 341 states and 941 transitions. [2022-01-18 15:33:26,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 15:33:26,217 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:26,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:26,218 INFO L225 Difference]: With dead ends: 341 [2022-01-18 15:33:26,218 INFO L226 Difference]: Without dead ends: 305 [2022-01-18 15:33:26,218 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2022-01-18 15:33:26,218 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:26,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 114 Invalid, 346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:26,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-01-18 15:33:26,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 270. [2022-01-18 15:33:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.9442379182156135) internal successors, (792), 269 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:26,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 792 transitions. [2022-01-18 15:33:26,222 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 792 transitions. Word has length 18 [2022-01-18 15:33:26,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:26,222 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 792 transitions. [2022-01-18 15:33:26,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.1875) internal successors, (35), 16 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:26,222 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 792 transitions. [2022-01-18 15:33:26,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:26,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:26,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:26,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2022-01-18 15:33:26,423 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable147 [2022-01-18 15:33:26,423 INFO L402 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:26,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:26,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1675811136, now seen corresponding path program 6 times [2022-01-18 15:33:26,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:26,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3379408] [2022-01-18 15:33:26,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:26,424 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:26,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:26,461 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:26,461 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:26,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3379408] [2022-01-18 15:33:26,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3379408] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:26,461 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850375146] [2022-01-18 15:33:26,461 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:33:26,461 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:26,461 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:26,462 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:26,477 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-01-18 15:33:26,490 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:33:26,490 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:26,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:26,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:26,580 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:26,580 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:26,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850375146] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:26,720 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:26,720 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-01-18 15:33:26,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181879293] [2022-01-18 15:33:26,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:26,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 15:33:26,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:26,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 15:33:26,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-01-18 15:33:26,721 INFO L87 Difference]: Start difference. First operand 270 states and 792 transitions. Second operand has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:26,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:26,897 INFO L93 Difference]: Finished difference Result 382 states and 1064 transitions. [2022-01-18 15:33:26,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-01-18 15:33:26,897 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:26,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:26,898 INFO L225 Difference]: With dead ends: 382 [2022-01-18 15:33:26,898 INFO L226 Difference]: Without dead ends: 298 [2022-01-18 15:33:26,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2022-01-18 15:33:26,898 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 142 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:26,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 102 Invalid, 351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2022-01-18 15:33:26,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 221. [2022-01-18 15:33:26,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 220 states have (on average 2.9545454545454546) internal successors, (650), 220 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:26,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 650 transitions. [2022-01-18 15:33:26,902 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 650 transitions. Word has length 18 [2022-01-18 15:33:26,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:26,902 INFO L470 AbstractCegarLoop]: Abstraction has 221 states and 650 transitions. [2022-01-18 15:33:26,902 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5625) internal successors, (41), 16 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 650 transitions. [2022-01-18 15:33:26,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:26,903 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:26,903 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:26,926 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-01-18 15:33:27,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:27,119 INFO L402 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:27,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:27,120 INFO L85 PathProgramCache]: Analyzing trace with hash -1801424317, now seen corresponding path program 10 times [2022-01-18 15:33:27,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:27,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123731964] [2022-01-18 15:33:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:27,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:27,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:27,174 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:27,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123731964] [2022-01-18 15:33:27,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123731964] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:27,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192959029] [2022-01-18 15:33:27,175 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:33:27,175 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:27,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:27,176 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:27,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-01-18 15:33:27,207 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:33:27,207 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:27,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:27,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:27,283 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:27,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:27,371 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:27,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192959029] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:27,371 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:27,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 11 [2022-01-18 15:33:27,371 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623350183] [2022-01-18 15:33:27,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:27,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:27,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:27,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-01-18 15:33:27,372 INFO L87 Difference]: Start difference. First operand 221 states and 650 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:27,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:27,461 INFO L93 Difference]: Finished difference Result 324 states and 925 transitions. [2022-01-18 15:33:27,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:27,461 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:27,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:27,462 INFO L225 Difference]: With dead ends: 324 [2022-01-18 15:33:27,462 INFO L226 Difference]: Without dead ends: 273 [2022-01-18 15:33:27,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 33 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2022-01-18 15:33:27,462 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 47 mSDsluCounter, 74 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:27,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 33 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:27,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2022-01-18 15:33:27,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 222. [2022-01-18 15:33:27,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.9411764705882355) internal successors, (650), 221 states have internal predecessors, (650), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:27,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 650 transitions. [2022-01-18 15:33:27,466 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 650 transitions. Word has length 18 [2022-01-18 15:33:27,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:27,466 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 650 transitions. [2022-01-18 15:33:27,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:27,466 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 650 transitions. [2022-01-18 15:33:27,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:27,466 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:27,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:27,489 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:27,675 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:27,675 INFO L402 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:27,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:27,676 INFO L85 PathProgramCache]: Analyzing trace with hash -315615553, now seen corresponding path program 11 times [2022-01-18 15:33:27,676 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:27,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461542700] [2022-01-18 15:33:27,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:27,676 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:27,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:27,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:27,717 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:27,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461542700] [2022-01-18 15:33:27,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461542700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:27,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2135904377] [2022-01-18 15:33:27,718 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:33:27,718 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:27,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:27,719 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:27,722 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-01-18 15:33:27,750 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:27,751 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:27,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 15:33:27,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:27,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:27,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:27,896 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2135904377] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:27,896 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 15:33:27,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 10 [2022-01-18 15:33:27,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395744658] [2022-01-18 15:33:27,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 15:33:27,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 15:33:27,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:27,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 15:33:27,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2022-01-18 15:33:27,897 INFO L87 Difference]: Start difference. First operand 222 states and 650 transitions. Second operand has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:27,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:27,980 INFO L93 Difference]: Finished difference Result 308 states and 878 transitions. [2022-01-18 15:33:27,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 15:33:27,980 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:27,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:27,981 INFO L225 Difference]: With dead ends: 308 [2022-01-18 15:33:27,981 INFO L226 Difference]: Without dead ends: 265 [2022-01-18 15:33:27,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2022-01-18 15:33:27,981 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 150 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:27,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 44 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 150 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 15:33:27,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-01-18 15:33:27,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 232. [2022-01-18 15:33:27,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 2.935064935064935) internal successors, (678), 231 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:27,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 678 transitions. [2022-01-18 15:33:27,984 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 678 transitions. Word has length 18 [2022-01-18 15:33:27,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:27,984 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 678 transitions. [2022-01-18 15:33:27,984 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.0) internal successors, (18), 6 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:27,984 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 678 transitions. [2022-01-18 15:33:27,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-01-18 15:33:27,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:27,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:28,000 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-01-18 15:33:28,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:28,185 INFO L402 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:28,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:28,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1817481091, now seen corresponding path program 12 times [2022-01-18 15:33:28,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:28,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354894607] [2022-01-18 15:33:28,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:28,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:28,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:28,240 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:28,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354894607] [2022-01-18 15:33:28,240 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354894607] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:28,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758103857] [2022-01-18 15:33:28,240 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:33:28,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:28,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:28,241 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:28,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-01-18 15:33:28,269 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:33:28,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:28,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 15:33:28,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:28,413 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:28,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:28,593 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:28,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [758103857] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:28,593 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:28,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2022-01-18 15:33:28,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814505271] [2022-01-18 15:33:28,593 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:28,593 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 15:33:28,594 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:28,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 15:33:28,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-01-18 15:33:28,594 INFO L87 Difference]: Start difference. First operand 232 states and 678 transitions. Second operand has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:28,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:28,901 INFO L93 Difference]: Finished difference Result 333 states and 922 transitions. [2022-01-18 15:33:28,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:33:28,901 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-01-18 15:33:28,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:28,902 INFO L225 Difference]: With dead ends: 333 [2022-01-18 15:33:28,902 INFO L226 Difference]: Without dead ends: 220 [2022-01-18 15:33:28,902 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2022-01-18 15:33:28,902 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 154 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 474 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:28,902 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 131 Invalid, 474 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 459 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 15:33:28,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2022-01-18 15:33:28,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 189. [2022-01-18 15:33:28,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 188 states have (on average 2.9202127659574466) internal successors, (549), 188 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:28,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 549 transitions. [2022-01-18 15:33:28,904 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 549 transitions. Word has length 18 [2022-01-18 15:33:28,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:28,904 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 549 transitions. [2022-01-18 15:33:28,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.4) internal successors, (36), 15 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:28,905 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 549 transitions. [2022-01-18 15:33:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:28,905 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:28,905 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:28,920 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-01-18 15:33:29,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151,31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:29,105 INFO L402 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:29,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:29,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1960611379, now seen corresponding path program 1 times [2022-01-18 15:33:29,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:29,106 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789055463] [2022-01-18 15:33:29,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:29,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:29,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:29,377 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:29,377 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:29,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789055463] [2022-01-18 15:33:29,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789055463] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:29,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839212929] [2022-01-18 15:33:29,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:29,378 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:29,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:29,379 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:29,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-01-18 15:33:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:29,412 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:33:29,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:30,114 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:30,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:33:31,681 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:31,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 134 [2022-01-18 15:33:31,684 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 114 [2022-01-18 15:33:32,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:32,229 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:32,549 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:32,549 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:33:32,928 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:32,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:33:32,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:32,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:33:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:33,132 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839212929] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:33,132 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:33,132 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:33:33,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [860020776] [2022-01-18 15:33:33,132 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:33,132 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:33:33,132 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:33,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:33:33,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:33:33,133 INFO L87 Difference]: Start difference. First operand 189 states and 549 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:33,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:33,743 INFO L93 Difference]: Finished difference Result 431 states and 1203 transitions. [2022-01-18 15:33:33,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:33:33,743 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:33:33,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:33,744 INFO L225 Difference]: With dead ends: 431 [2022-01-18 15:33:33,744 INFO L226 Difference]: Without dead ends: 421 [2022-01-18 15:33:33,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=130, Invalid=1130, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:33:33,745 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 60 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 454 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 109 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:33,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 454 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 314 Invalid, 0 Unknown, 109 Unchecked, 0.2s Time] [2022-01-18 15:33:33,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2022-01-18 15:33:33,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 197. [2022-01-18 15:33:33,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 196 states have (on average 2.9030612244897958) internal successors, (569), 196 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 569 transitions. [2022-01-18 15:33:33,748 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 569 transitions. Word has length 20 [2022-01-18 15:33:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:33,748 INFO L470 AbstractCegarLoop]: Abstraction has 197 states and 569 transitions. [2022-01-18 15:33:33,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 569 transitions. [2022-01-18 15:33:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:33,749 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:33,749 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:33,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:33,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:33,949 INFO L402 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:33,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:33,949 INFO L85 PathProgramCache]: Analyzing trace with hash 2145398797, now seen corresponding path program 2 times [2022-01-18 15:33:33,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:33,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772024635] [2022-01-18 15:33:33,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:33,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:34,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:34,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:34,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772024635] [2022-01-18 15:33:34,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772024635] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:34,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125500068] [2022-01-18 15:33:34,202 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:33:34,202 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:34,202 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:34,203 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:34,204 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-01-18 15:33:34,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:34,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:34,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:33:34,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:34,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:34,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:33:36,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:36,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 144 [2022-01-18 15:33:36,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 126 [2022-01-18 15:33:36,761 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:36,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:37,043 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:37,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:33:37,350 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:37,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:33:37,358 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:37,358 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:33:37,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:37,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125500068] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:37,500 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:37,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:33:37,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864946606] [2022-01-18 15:33:37,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:37,501 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:33:37,501 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:37,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:33:37,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:33:37,501 INFO L87 Difference]: Start difference. First operand 197 states and 569 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:38,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:38,738 INFO L93 Difference]: Finished difference Result 697 states and 1925 transitions. [2022-01-18 15:33:38,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 15:33:38,738 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:33:38,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:38,739 INFO L225 Difference]: With dead ends: 697 [2022-01-18 15:33:38,739 INFO L226 Difference]: Without dead ends: 667 [2022-01-18 15:33:38,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 252 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=180, Invalid=1626, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 15:33:38,740 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 178 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 1254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 557 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:38,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 691 Invalid, 1254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 680 Invalid, 0 Unknown, 557 Unchecked, 0.3s Time] [2022-01-18 15:33:38,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2022-01-18 15:33:38,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 227. [2022-01-18 15:33:38,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 227 states, 226 states have (on average 2.827433628318584) internal successors, (639), 226 states have internal predecessors, (639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:38,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 639 transitions. [2022-01-18 15:33:38,746 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 639 transitions. Word has length 20 [2022-01-18 15:33:38,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:38,746 INFO L470 AbstractCegarLoop]: Abstraction has 227 states and 639 transitions. [2022-01-18 15:33:38,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:38,746 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 639 transitions. [2022-01-18 15:33:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:38,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:38,746 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:38,763 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2022-01-18 15:33:38,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:38,955 INFO L402 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:38,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:38,956 INFO L85 PathProgramCache]: Analyzing trace with hash -829366387, now seen corresponding path program 3 times [2022-01-18 15:33:38,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:38,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1603524329] [2022-01-18 15:33:38,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:38,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:39,210 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:39,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1603524329] [2022-01-18 15:33:39,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1603524329] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:39,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498360027] [2022-01-18 15:33:39,210 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:33:39,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:39,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:39,216 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:39,217 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-01-18 15:33:39,249 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:33:39,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:39,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:33:39,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:39,880 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:39,881 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:33:41,031 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:41,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 155 [2022-01-18 15:33:41,035 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 133 [2022-01-18 15:33:42,138 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:42,138 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:42,468 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:42,469 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:33:42,794 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:42,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:33:42,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:42,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:33:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:42,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498360027] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:42,938 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:42,938 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:33:42,938 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930383243] [2022-01-18 15:33:42,938 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:42,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:33:42,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:42,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:33:42,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:33:42,939 INFO L87 Difference]: Start difference. First operand 227 states and 639 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:44,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:44,093 INFO L93 Difference]: Finished difference Result 531 states and 1441 transitions. [2022-01-18 15:33:44,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:33:44,094 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:33:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:44,095 INFO L225 Difference]: With dead ends: 531 [2022-01-18 15:33:44,095 INFO L226 Difference]: Without dead ends: 490 [2022-01-18 15:33:44,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:33:44,095 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 215 mSDsluCounter, 730 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 345 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:44,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 426 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 568 Invalid, 0 Unknown, 345 Unchecked, 0.3s Time] [2022-01-18 15:33:44,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-01-18 15:33:44,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 230. [2022-01-18 15:33:44,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 229 states have (on average 2.834061135371179) internal successors, (649), 229 states have internal predecessors, (649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:44,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 649 transitions. [2022-01-18 15:33:44,100 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 649 transitions. Word has length 20 [2022-01-18 15:33:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:44,100 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 649 transitions. [2022-01-18 15:33:44,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:44,101 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 649 transitions. [2022-01-18 15:33:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:44,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:44,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:44,117 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:44,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable154 [2022-01-18 15:33:44,307 INFO L402 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:44,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:44,307 INFO L85 PathProgramCache]: Analyzing trace with hash -235315033, now seen corresponding path program 4 times [2022-01-18 15:33:44,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:44,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448363237] [2022-01-18 15:33:44,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:44,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:44,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:44,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:44,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:44,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448363237] [2022-01-18 15:33:44,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448363237] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:44,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1194234201] [2022-01-18 15:33:44,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:33:44,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:44,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:44,544 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:44,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-01-18 15:33:44,571 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:33:44,571 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:44,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:33:44,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:45,140 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:45,141 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:33:46,175 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:46,176 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 152 [2022-01-18 15:33:46,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 132 [2022-01-18 15:33:46,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:46,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:47,003 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:47,004 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:33:47,355 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:47,355 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:33:47,362 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:47,362 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:33:47,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:47,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1194234201] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:47,529 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:47,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:33:47,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902173541] [2022-01-18 15:33:47,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:47,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:33:47,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:47,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:33:47,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:33:47,530 INFO L87 Difference]: Start difference. First operand 230 states and 649 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:48,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:48,107 INFO L93 Difference]: Finished difference Result 432 states and 1229 transitions. [2022-01-18 15:33:48,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:33:48,108 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:33:48,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:48,108 INFO L225 Difference]: With dead ends: 432 [2022-01-18 15:33:48,108 INFO L226 Difference]: Without dead ends: 412 [2022-01-18 15:33:48,109 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:33:48,109 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 62 mSDsluCounter, 655 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:48,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 487 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 387 Invalid, 0 Unknown, 127 Unchecked, 0.2s Time] [2022-01-18 15:33:48,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 412 states. [2022-01-18 15:33:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 412 to 233. [2022-01-18 15:33:48,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 232 states have (on average 2.8189655172413794) internal successors, (654), 232 states have internal predecessors, (654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 654 transitions. [2022-01-18 15:33:48,113 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 654 transitions. Word has length 20 [2022-01-18 15:33:48,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:48,114 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 654 transitions. [2022-01-18 15:33:48,114 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:48,114 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 654 transitions. [2022-01-18 15:33:48,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:48,114 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:48,114 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:48,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:48,335 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable155 [2022-01-18 15:33:48,336 INFO L402 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:48,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:48,336 INFO L85 PathProgramCache]: Analyzing trace with hash 737615589, now seen corresponding path program 5 times [2022-01-18 15:33:48,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:48,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308524562] [2022-01-18 15:33:48,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:48,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:48,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:48,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:48,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308524562] [2022-01-18 15:33:48,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [308524562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:48,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453574001] [2022-01-18 15:33:48,574 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:33:48,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:48,577 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:48,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-01-18 15:33:48,602 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:33:48,603 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:48,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:33:48,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:48,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 96 [2022-01-18 15:33:49,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-01-18 15:33:49,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:33:49,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:49,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:50,229 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:50,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-01-18 15:33:50,523 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:33:50,524 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:33:50,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:33:50,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:50,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453574001] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:50,576 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:50,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:33:50,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604624096] [2022-01-18 15:33:50,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:50,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:33:50,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:50,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:33:50,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=674, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:33:50,576 INFO L87 Difference]: Start difference. First operand 233 states and 654 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:54,498 INFO L93 Difference]: Finished difference Result 607 states and 1632 transitions. [2022-01-18 15:33:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:33:54,498 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:33:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:54,499 INFO L225 Difference]: With dead ends: 607 [2022-01-18 15:33:54,499 INFO L226 Difference]: Without dead ends: 539 [2022-01-18 15:33:54,499 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=324, Invalid=1482, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 15:33:54,499 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 232 mSDsluCounter, 799 mSDsCounter, 0 mSdLazyCounter, 1129 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 1129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:54,499 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 348 Invalid, 1170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 1129 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 15:33:54,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-18 15:33:54,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 255. [2022-01-18 15:33:54,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 254 states have (on average 2.858267716535433) internal successors, (726), 254 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:54,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 726 transitions. [2022-01-18 15:33:54,503 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 726 transitions. Word has length 20 [2022-01-18 15:33:54,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:54,503 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 726 transitions. [2022-01-18 15:33:54,503 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:54,503 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 726 transitions. [2022-01-18 15:33:54,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:54,504 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:54,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:54,519 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:54,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable156 [2022-01-18 15:33:54,704 INFO L402 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:54,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:54,705 INFO L85 PathProgramCache]: Analyzing trace with hash 113019597, now seen corresponding path program 6 times [2022-01-18 15:33:54,705 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:54,705 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873540076] [2022-01-18 15:33:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:54,705 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:54,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:54,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:54,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873540076] [2022-01-18 15:33:54,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873540076] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:54,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [140759829] [2022-01-18 15:33:54,898 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:33:54,898 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:54,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:54,899 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:54,900 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-01-18 15:33:54,925 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:33:54,925 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:33:54,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:33:54,926 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:33:55,605 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:55,605 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-01-18 15:33:56,435 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:33:56,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 136 [2022-01-18 15:33:56,438 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 118 [2022-01-18 15:33:56,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:56,968 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:33:57,300 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:57,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:33:57,728 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:57,728 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:33:57,735 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:33:57,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:33:57,859 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:57,859 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [140759829] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:33:57,859 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:33:57,859 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:33:57,859 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470352918] [2022-01-18 15:33:57,859 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:33:57,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:33:57,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:33:57,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:33:57,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:33:57,863 INFO L87 Difference]: Start difference. First operand 255 states and 726 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:58,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:33:58,913 INFO L93 Difference]: Finished difference Result 607 states and 1703 transitions. [2022-01-18 15:33:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:33:58,915 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:33:58,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:33:58,916 INFO L225 Difference]: With dead ends: 607 [2022-01-18 15:33:58,916 INFO L226 Difference]: Without dead ends: 576 [2022-01-18 15:33:58,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 26 SyntacticMatches, 4 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=170, Invalid=1390, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:33:58,916 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 101 mSDsluCounter, 798 mSDsCounter, 0 mSdLazyCounter, 552 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 552 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 331 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:33:58,916 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 534 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 552 Invalid, 0 Unknown, 331 Unchecked, 0.2s Time] [2022-01-18 15:33:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-18 15:33:58,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 257. [2022-01-18 15:33:58,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 256 states have (on average 2.8515625) internal successors, (730), 256 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:58,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 730 transitions. [2022-01-18 15:33:58,920 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 730 transitions. Word has length 20 [2022-01-18 15:33:58,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:33:58,921 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 730 transitions. [2022-01-18 15:33:58,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:33:58,921 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 730 transitions. [2022-01-18 15:33:58,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:33:58,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:33:58,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:33:58,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 15:33:59,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable157 [2022-01-18 15:33:59,143 INFO L402 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:33:59,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:33:59,143 INFO L85 PathProgramCache]: Analyzing trace with hash -1881445559, now seen corresponding path program 7 times [2022-01-18 15:33:59,143 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:33:59,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690093904] [2022-01-18 15:33:59,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:33:59,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:33:59,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:59,390 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:33:59,390 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:33:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690093904] [2022-01-18 15:33:59,390 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690093904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:33:59,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681890154] [2022-01-18 15:33:59,390 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:33:59,390 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:33:59,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:33:59,392 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:33:59,420 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2022-01-18 15:33:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:33:59,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:33:59,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:00,133 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:00,134 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-01-18 15:34:00,576 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:00,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 160 [2022-01-18 15:34:00,578 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:34:01,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:01,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:01,705 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:01,705 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:34:02,160 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:02,160 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:34:02,168 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:02,169 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:34:02,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:02,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681890154] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:02,300 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:02,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:02,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489883455] [2022-01-18 15:34:02,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:02,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:02,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:02,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:02,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:02,301 INFO L87 Difference]: Start difference. First operand 257 states and 730 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:03,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:03,483 INFO L93 Difference]: Finished difference Result 568 states and 1532 transitions. [2022-01-18 15:34:03,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:34:03,484 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:03,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:03,485 INFO L225 Difference]: With dead ends: 568 [2022-01-18 15:34:03,485 INFO L226 Difference]: Without dead ends: 518 [2022-01-18 15:34:03,485 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=199, Invalid=1441, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:34:03,485 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 147 mSDsluCounter, 779 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 516 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:03,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 516 Invalid, 872 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 569 Invalid, 0 Unknown, 260 Unchecked, 0.3s Time] [2022-01-18 15:34:03,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2022-01-18 15:34:03,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 263. [2022-01-18 15:34:03,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 262 states have (on average 2.8396946564885495) internal successors, (744), 262 states have internal predecessors, (744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:03,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 744 transitions. [2022-01-18 15:34:03,489 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 744 transitions. Word has length 20 [2022-01-18 15:34:03,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:03,489 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 744 transitions. [2022-01-18 15:34:03,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:03,489 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 744 transitions. [2022-01-18 15:34:03,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:03,489 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:03,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:03,505 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:03,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable158 [2022-01-18 15:34:03,691 INFO L402 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:03,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:03,692 INFO L85 PathProgramCache]: Analyzing trace with hash 264725201, now seen corresponding path program 8 times [2022-01-18 15:34:03,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:03,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740197830] [2022-01-18 15:34:03,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:03,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:03,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:03,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:03,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:03,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740197830] [2022-01-18 15:34:03,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740197830] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:03,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665694875] [2022-01-18 15:34:03,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:34:03,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:03,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:03,955 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:03,955 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2022-01-18 15:34:03,979 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:34:03,979 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:03,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:03,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:04,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:04,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:34:05,309 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:05,310 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 161 [2022-01-18 15:34:05,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 137 [2022-01-18 15:34:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:06,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:06,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:06,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:34:06,874 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:06,875 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:34:06,884 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:06,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:34:07,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:07,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665694875] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:07,024 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:07,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:07,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859222188] [2022-01-18 15:34:07,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:07,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:07,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:07,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:07,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:07,025 INFO L87 Difference]: Start difference. First operand 263 states and 744 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:07,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:07,840 INFO L93 Difference]: Finished difference Result 497 states and 1373 transitions. [2022-01-18 15:34:07,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:34:07,841 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:07,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:07,841 INFO L225 Difference]: With dead ends: 497 [2022-01-18 15:34:07,841 INFO L226 Difference]: Without dead ends: 483 [2022-01-18 15:34:07,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:34:07,842 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 98 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 131 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:07,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 315 Invalid, 650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 500 Invalid, 0 Unknown, 131 Unchecked, 0.2s Time] [2022-01-18 15:34:07,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-01-18 15:34:07,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 264. [2022-01-18 15:34:07,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 2.8365019011406845) internal successors, (746), 263 states have internal predecessors, (746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:07,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 746 transitions. [2022-01-18 15:34:07,845 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 746 transitions. Word has length 20 [2022-01-18 15:34:07,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:07,846 INFO L470 AbstractCegarLoop]: Abstraction has 264 states and 746 transitions. [2022-01-18 15:34:07,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:07,846 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 746 transitions. [2022-01-18 15:34:07,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:07,846 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:07,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:07,861 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2022-01-18 15:34:08,046 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable159 [2022-01-18 15:34:08,047 INFO L402 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:08,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:08,047 INFO L85 PathProgramCache]: Analyzing trace with hash 287321749, now seen corresponding path program 9 times [2022-01-18 15:34:08,047 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:08,047 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877135965] [2022-01-18 15:34:08,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:08,047 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:08,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:08,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:08,261 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:08,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877135965] [2022-01-18 15:34:08,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877135965] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:08,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626101481] [2022-01-18 15:34:08,261 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:34:08,261 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:08,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:08,262 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:08,269 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2022-01-18 15:34:08,292 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:34:08,292 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:08,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:08,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:09,010 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:09,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:34:09,632 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:09,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 167 [2022-01-18 15:34:09,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 143 [2022-01-18 15:34:10,577 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:10,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:10,853 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:10,853 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:34:11,197 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:11,197 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:34:11,204 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:11,204 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:34:11,339 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:11,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1626101481] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:11,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:11,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:11,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930348808] [2022-01-18 15:34:11,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:11,340 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:11,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:11,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:11,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:11,340 INFO L87 Difference]: Start difference. First operand 264 states and 746 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:12,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:12,531 INFO L93 Difference]: Finished difference Result 466 states and 1312 transitions. [2022-01-18 15:34:12,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:34:12,531 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:12,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:12,532 INFO L225 Difference]: With dead ends: 466 [2022-01-18 15:34:12,532 INFO L226 Difference]: Without dead ends: 446 [2022-01-18 15:34:12,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:34:12,532 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 80 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 623 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 486 SdHoareTripleChecker+Invalid, 789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 623 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 137 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:12,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 486 Invalid, 789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 623 Invalid, 0 Unknown, 137 Unchecked, 0.3s Time] [2022-01-18 15:34:12,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2022-01-18 15:34:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 265. [2022-01-18 15:34:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 264 states have (on average 2.837121212121212) internal successors, (749), 264 states have internal predecessors, (749), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:12,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 749 transitions. [2022-01-18 15:34:12,537 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 749 transitions. Word has length 20 [2022-01-18 15:34:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:12,538 INFO L470 AbstractCegarLoop]: Abstraction has 265 states and 749 transitions. [2022-01-18 15:34:12,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:12,538 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 749 transitions. [2022-01-18 15:34:12,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:12,538 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:12,538 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:12,556 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:12,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable160 [2022-01-18 15:34:12,747 INFO L402 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:12,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:12,748 INFO L85 PathProgramCache]: Analyzing trace with hash 858776555, now seen corresponding path program 10 times [2022-01-18 15:34:12,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:12,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750395353] [2022-01-18 15:34:12,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:12,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:12,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:12,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:12,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750395353] [2022-01-18 15:34:12,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750395353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:12,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750935986] [2022-01-18 15:34:12,988 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:34:12,988 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:12,988 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:12,989 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:12,991 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2022-01-18 15:34:13,022 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:34:13,023 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:13,023 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:34:13,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:13,675 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:13,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:34:14,580 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:14,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 139 [2022-01-18 15:34:14,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 117 [2022-01-18 15:34:15,047 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:15,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:15,346 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:15,347 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:34:15,742 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:15,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:34:15,748 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:15,748 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:34:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:15,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750935986] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:15,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:15,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:15,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529632172] [2022-01-18 15:34:15,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:15,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:15,887 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:15,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:15,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:15,887 INFO L87 Difference]: Start difference. First operand 265 states and 749 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:16,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:16,810 INFO L93 Difference]: Finished difference Result 600 states and 1705 transitions. [2022-01-18 15:34:16,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:34:16,810 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:16,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:16,811 INFO L225 Difference]: With dead ends: 600 [2022-01-18 15:34:16,811 INFO L226 Difference]: Without dead ends: 586 [2022-01-18 15:34:16,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:34:16,811 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 103 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 842 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 474 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:16,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 339 Invalid, 842 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 366 Invalid, 0 Unknown, 474 Unchecked, 0.1s Time] [2022-01-18 15:34:16,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-01-18 15:34:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 270. [2022-01-18 15:34:16,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.825278810408922) internal successors, (760), 269 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:16,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 760 transitions. [2022-01-18 15:34:16,815 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 760 transitions. Word has length 20 [2022-01-18 15:34:16,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:16,815 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 760 transitions. [2022-01-18 15:34:16,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:16,816 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 760 transitions. [2022-01-18 15:34:16,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:16,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:16,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:16,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2022-01-18 15:34:17,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable161 [2022-01-18 15:34:17,016 INFO L402 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:17,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:17,017 INFO L85 PathProgramCache]: Analyzing trace with hash -766323669, now seen corresponding path program 11 times [2022-01-18 15:34:17,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:17,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084447598] [2022-01-18 15:34:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:17,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:17,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:17,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:17,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:17,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084447598] [2022-01-18 15:34:17,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084447598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:17,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [404897421] [2022-01-18 15:34:17,312 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:34:17,312 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:17,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:17,313 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:17,313 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2022-01-18 15:34:17,337 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:34:17,337 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:17,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:17,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:17,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-01-18 15:34:18,296 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 135 [2022-01-18 15:34:18,299 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 115 [2022-01-18 15:34:18,851 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:18,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:19,112 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:19,113 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-01-18 15:34:19,410 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:34:19,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 77 [2022-01-18 15:34:19,413 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-01-18 15:34:19,464 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:19,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [404897421] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:19,465 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:19,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:34:19,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598099559] [2022-01-18 15:34:19,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:19,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:34:19,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:19,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:34:19,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:34:19,466 INFO L87 Difference]: Start difference. First operand 270 states and 760 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:22,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:22,251 INFO L93 Difference]: Finished difference Result 499 states and 1366 transitions. [2022-01-18 15:34:22,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:34:22,252 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:22,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:22,252 INFO L225 Difference]: With dead ends: 499 [2022-01-18 15:34:22,253 INFO L226 Difference]: Without dead ends: 429 [2022-01-18 15:34:22,253 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:34:22,254 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 172 mSDsluCounter, 876 mSDsCounter, 0 mSdLazyCounter, 1165 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 1195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:22,254 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 394 Invalid, 1195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1165 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:34:22,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2022-01-18 15:34:22,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 274. [2022-01-18 15:34:22,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 274 states, 273 states have (on average 2.838827838827839) internal successors, (775), 273 states have internal predecessors, (775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:22,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 274 states to 274 states and 775 transitions. [2022-01-18 15:34:22,258 INFO L78 Accepts]: Start accepts. Automaton has 274 states and 775 transitions. Word has length 20 [2022-01-18 15:34:22,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:22,258 INFO L470 AbstractCegarLoop]: Abstraction has 274 states and 775 transitions. [2022-01-18 15:34:22,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:22,258 INFO L276 IsEmpty]: Start isEmpty. Operand 274 states and 775 transitions. [2022-01-18 15:34:22,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:22,258 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:22,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:22,273 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2022-01-18 15:34:22,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:22,459 INFO L402 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:22,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:22,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1284001523, now seen corresponding path program 12 times [2022-01-18 15:34:22,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:22,459 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092519375] [2022-01-18 15:34:22,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:22,459 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:22,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:22,688 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:22,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092519375] [2022-01-18 15:34:22,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092519375] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:22,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242742852] [2022-01-18 15:34:22,688 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:34:22,688 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:22,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:22,689 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:22,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2022-01-18 15:34:22,721 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:34:22,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:22,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:22,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:23,315 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:23,315 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-01-18 15:34:24,406 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:24,407 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 142 [2022-01-18 15:34:24,410 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 122 [2022-01-18 15:34:24,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:24,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:25,264 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:25,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-01-18 15:34:25,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:25,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:34:25,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:25,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:34:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:25,721 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242742852] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:25,721 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:25,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:25,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960866721] [2022-01-18 15:34:25,721 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:25,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:25,721 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:25,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:25,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:25,721 INFO L87 Difference]: Start difference. First operand 274 states and 775 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:26,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:26,410 INFO L93 Difference]: Finished difference Result 484 states and 1376 transitions. [2022-01-18 15:34:26,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:34:26,410 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:26,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:26,411 INFO L225 Difference]: With dead ends: 484 [2022-01-18 15:34:26,411 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 15:34:26,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=1127, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:34:26,411 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 55 mSDsluCounter, 599 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:26,412 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 429 Invalid, 524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 397 Invalid, 0 Unknown, 124 Unchecked, 0.2s Time] [2022-01-18 15:34:26,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 15:34:26,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 280. [2022-01-18 15:34:26,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 279 states have (on average 2.817204301075269) internal successors, (786), 279 states have internal predecessors, (786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:26,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 786 transitions. [2022-01-18 15:34:26,416 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 786 transitions. Word has length 20 [2022-01-18 15:34:26,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:26,416 INFO L470 AbstractCegarLoop]: Abstraction has 280 states and 786 transitions. [2022-01-18 15:34:26,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:26,416 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 786 transitions. [2022-01-18 15:34:26,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:26,416 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:26,416 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:26,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:26,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:26,631 INFO L402 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:26,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:26,632 INFO L85 PathProgramCache]: Analyzing trace with hash -1459874991, now seen corresponding path program 13 times [2022-01-18 15:34:26,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:26,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306377366] [2022-01-18 15:34:26,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:26,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:26,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:26,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:26,948 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:26,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306377366] [2022-01-18 15:34:26,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306377366] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:26,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [479373153] [2022-01-18 15:34:26,948 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:34:26,948 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:26,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:26,949 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:26,950 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2022-01-18 15:34:26,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:26,974 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:34:26,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:27,441 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:27,442 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-01-18 15:34:28,561 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:28,562 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 133 [2022-01-18 15:34:28,564 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-01-18 15:34:28,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:28,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:29,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:29,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:34:29,553 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:29,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:34:29,560 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:29,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:34:29,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:29,710 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [479373153] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:29,710 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:29,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:29,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568566107] [2022-01-18 15:34:29,710 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:29,710 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:29,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:29,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:29,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:29,711 INFO L87 Difference]: Start difference. First operand 280 states and 786 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:30,378 INFO L93 Difference]: Finished difference Result 472 states and 1329 transitions. [2022-01-18 15:34:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:34:30,379 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:30,380 INFO L225 Difference]: With dead ends: 472 [2022-01-18 15:34:30,380 INFO L226 Difference]: Without dead ends: 452 [2022-01-18 15:34:30,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:34:30,380 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 98 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 296 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 271 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:30,380 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 296 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 321 Invalid, 0 Unknown, 271 Unchecked, 0.1s Time] [2022-01-18 15:34:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 452 states. [2022-01-18 15:34:30,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 452 to 282. [2022-01-18 15:34:30,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 281 states have (on average 2.814946619217082) internal successors, (791), 281 states have internal predecessors, (791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:30,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 791 transitions. [2022-01-18 15:34:30,385 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 791 transitions. Word has length 20 [2022-01-18 15:34:30,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:30,385 INFO L470 AbstractCegarLoop]: Abstraction has 282 states and 791 transitions. [2022-01-18 15:34:30,385 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:30,386 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 791 transitions. [2022-01-18 15:34:30,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:30,386 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:30,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:30,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:30,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164,44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:30,602 INFO L402 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:30,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:30,603 INFO L85 PathProgramCache]: Analyzing trace with hash 840627149, now seen corresponding path program 14 times [2022-01-18 15:34:30,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:30,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162963925] [2022-01-18 15:34:30,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:30,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:30,876 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:30,876 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:30,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162963925] [2022-01-18 15:34:30,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162963925] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:30,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1628316086] [2022-01-18 15:34:30,877 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:34:30,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:30,877 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:30,878 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:30,878 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2022-01-18 15:34:30,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:34:30,902 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:30,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:30,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:31,558 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:31,559 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 102 [2022-01-18 15:34:32,112 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:32,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 168 [2022-01-18 15:34:32,115 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 148 [2022-01-18 15:34:33,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:33,503 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:33,863 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:33,863 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-01-18 15:34:34,166 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:34,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:34:34,173 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:34,173 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:34:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:34,291 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1628316086] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:34,291 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:34,291 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:34,292 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469858644] [2022-01-18 15:34:34,292 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:34,292 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:34,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:34,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:34,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:34,292 INFO L87 Difference]: Start difference. First operand 282 states and 791 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:35,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:35,148 INFO L93 Difference]: Finished difference Result 469 states and 1342 transitions. [2022-01-18 15:34:35,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:34:35,148 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:35,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:35,149 INFO L225 Difference]: With dead ends: 469 [2022-01-18 15:34:35,149 INFO L226 Difference]: Without dead ends: 462 [2022-01-18 15:34:35,150 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:34:35,150 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 104 mSDsluCounter, 543 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 446 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:35,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 332 Invalid, 784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 335 Invalid, 0 Unknown, 446 Unchecked, 0.1s Time] [2022-01-18 15:34:35,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-01-18 15:34:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 287. [2022-01-18 15:34:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 286 states have (on average 2.8146853146853146) internal successors, (805), 286 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 805 transitions. [2022-01-18 15:34:35,153 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 805 transitions. Word has length 20 [2022-01-18 15:34:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:35,154 INFO L470 AbstractCegarLoop]: Abstraction has 287 states and 805 transitions. [2022-01-18 15:34:35,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 805 transitions. [2022-01-18 15:34:35,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:35,154 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:35,154 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:35,169 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Ended with exit code 0 [2022-01-18 15:34:35,354 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:35,355 INFO L402 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:35,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:35,355 INFO L85 PathProgramCache]: Analyzing trace with hash 863223697, now seen corresponding path program 15 times [2022-01-18 15:34:35,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:35,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697716920] [2022-01-18 15:34:35,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:35,355 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:35,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:35,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:35,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697716920] [2022-01-18 15:34:35,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697716920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:35,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44533767] [2022-01-18 15:34:35,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:34:35,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:35,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:35,560 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:35,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2022-01-18 15:34:35,585 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:34:35,585 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:35,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:34:35,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:36,095 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:36,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-01-18 15:34:36,751 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:36,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 153 [2022-01-18 15:34:36,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 131 [2022-01-18 15:34:37,544 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:37,545 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:37,889 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:37,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-01-18 15:34:38,273 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:38,273 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:34:38,279 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:38,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:34:38,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:38,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [44533767] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:38,419 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:38,419 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:38,419 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911755664] [2022-01-18 15:34:38,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:38,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:38,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:38,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:38,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:38,420 INFO L87 Difference]: Start difference. First operand 287 states and 805 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:40,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:40,024 INFO L93 Difference]: Finished difference Result 613 states and 1652 transitions. [2022-01-18 15:34:40,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 15:34:40,025 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:40,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:40,026 INFO L225 Difference]: With dead ends: 613 [2022-01-18 15:34:40,026 INFO L226 Difference]: Without dead ends: 586 [2022-01-18 15:34:40,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=207, Invalid=1515, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:34:40,026 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 145 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 151 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:40,026 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [145 Valid, 558 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 713 Invalid, 0 Unknown, 151 Unchecked, 0.3s Time] [2022-01-18 15:34:40,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2022-01-18 15:34:40,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 290. [2022-01-18 15:34:40,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 289 states have (on average 2.8166089965397925) internal successors, (814), 289 states have internal predecessors, (814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:40,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 814 transitions. [2022-01-18 15:34:40,031 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 814 transitions. Word has length 20 [2022-01-18 15:34:40,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:40,031 INFO L470 AbstractCegarLoop]: Abstraction has 290 states and 814 transitions. [2022-01-18 15:34:40,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:40,031 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 814 transitions. [2022-01-18 15:34:40,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:40,031 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:40,032 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:40,047 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Ended with exit code 0 [2022-01-18 15:34:40,232 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable166 [2022-01-18 15:34:40,232 INFO L402 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:40,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:40,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1153255395, now seen corresponding path program 16 times [2022-01-18 15:34:40,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:40,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745129069] [2022-01-18 15:34:40,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:40,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:40,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:40,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:40,437 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:40,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745129069] [2022-01-18 15:34:40,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745129069] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:40,437 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [583715737] [2022-01-18 15:34:40,437 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:34:40,437 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:40,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:40,438 INFO L229 MonitoredProcess]: Starting monitored process 47 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:40,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Waiting until timeout for monitored process [2022-01-18 15:34:40,463 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:34:40,463 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:40,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:34:40,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:41,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:41,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-01-18 15:34:41,769 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:41,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-01-18 15:34:41,772 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:34:42,240 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:42,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:42,539 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:42,539 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:34:42,933 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:42,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:34:42,939 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:42,939 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:34:43,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:43,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [583715737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:43,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:43,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:43,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097685835] [2022-01-18 15:34:43,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:43,071 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:43,071 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:43,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:43,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:43,071 INFO L87 Difference]: Start difference. First operand 290 states and 814 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:43,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:43,825 INFO L93 Difference]: Finished difference Result 663 states and 1808 transitions. [2022-01-18 15:34:43,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:34:43,825 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:43,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:43,826 INFO L225 Difference]: With dead ends: 663 [2022-01-18 15:34:43,826 INFO L226 Difference]: Without dead ends: 632 [2022-01-18 15:34:43,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:34:43,827 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 107 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 532 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 286 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:43,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 480 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 532 Invalid, 0 Unknown, 286 Unchecked, 0.2s Time] [2022-01-18 15:34:43,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-01-18 15:34:43,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 297. [2022-01-18 15:34:43,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 296 states have (on average 2.8074324324324325) internal successors, (831), 296 states have internal predecessors, (831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:43,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 831 transitions. [2022-01-18 15:34:43,831 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 831 transitions. Word has length 20 [2022-01-18 15:34:43,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:43,831 INFO L470 AbstractCegarLoop]: Abstraction has 297 states and 831 transitions. [2022-01-18 15:34:43,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:43,831 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 831 transitions. [2022-01-18 15:34:43,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:43,831 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:43,831 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:43,847 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:44,032 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:44,032 INFO L402 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:44,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:44,032 INFO L85 PathProgramCache]: Analyzing trace with hash -841209761, now seen corresponding path program 17 times [2022-01-18 15:34:44,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:44,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968210977] [2022-01-18 15:34:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:44,033 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:44,284 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:44,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:44,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968210977] [2022-01-18 15:34:44,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968210977] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:44,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964887977] [2022-01-18 15:34:44,285 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:34:44,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:44,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:44,288 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:44,338 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 15:34:44,346 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:34:44,346 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:44,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 15:34:44,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:44,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2022-01-18 15:34:44,845 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 173 [2022-01-18 15:34:44,848 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 147 [2022-01-18 15:34:45,682 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:45,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:46,046 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:46,046 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:34:46,361 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:34:46,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 81 [2022-01-18 15:34:46,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-01-18 15:34:46,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:46,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964887977] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:46,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:46,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:34:46,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983837517] [2022-01-18 15:34:46,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:46,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:34:46,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:46,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:34:46,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:34:46,384 INFO L87 Difference]: Start difference. First operand 297 states and 831 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:49,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:49,255 INFO L93 Difference]: Finished difference Result 565 states and 1516 transitions. [2022-01-18 15:34:49,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:34:49,255 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:49,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:49,256 INFO L225 Difference]: With dead ends: 565 [2022-01-18 15:34:49,256 INFO L226 Difference]: Without dead ends: 508 [2022-01-18 15:34:49,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=234, Invalid=1248, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:34:49,256 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 216 mSDsluCounter, 736 mSDsCounter, 0 mSdLazyCounter, 1032 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:49,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 368 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1032 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:34:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2022-01-18 15:34:49,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 306. [2022-01-18 15:34:49,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 305 states have (on average 2.8131147540983608) internal successors, (858), 305 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:49,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 858 transitions. [2022-01-18 15:34:49,260 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 858 transitions. Word has length 20 [2022-01-18 15:34:49,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:49,260 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 858 transitions. [2022-01-18 15:34:49,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:49,260 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 858 transitions. [2022-01-18 15:34:49,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:49,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:49,261 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:49,276 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:49,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable168 [2022-01-18 15:34:49,461 INFO L402 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1304960999, now seen corresponding path program 18 times [2022-01-18 15:34:49,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:49,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430432714] [2022-01-18 15:34:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:49,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:49,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:49,690 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:49,691 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430432714] [2022-01-18 15:34:49,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430432714] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:49,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1793705642] [2022-01-18 15:34:49,691 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:34:49,691 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:49,691 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:49,692 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:49,693 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 15:34:49,716 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 15:34:49,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:49,717 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:34:49,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:50,351 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:50,351 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:34:50,870 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:50,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 160 [2022-01-18 15:34:50,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 138 [2022-01-18 15:34:51,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:51,764 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:52,121 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:52,121 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 103 [2022-01-18 15:34:52,512 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:52,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:34:52,518 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:52,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:34:52,669 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:52,669 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1793705642] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:52,669 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:52,669 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:52,669 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697988305] [2022-01-18 15:34:52,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:52,669 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:52,669 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:52,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:52,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:52,670 INFO L87 Difference]: Start difference. First operand 306 states and 858 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:53,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:53,439 INFO L93 Difference]: Finished difference Result 537 states and 1480 transitions. [2022-01-18 15:34:53,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:34:53,440 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:53,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:53,441 INFO L225 Difference]: With dead ends: 537 [2022-01-18 15:34:53,441 INFO L226 Difference]: Without dead ends: 523 [2022-01-18 15:34:53,441 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:34:53,441 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 89 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 467 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 467 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:53,441 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 315 Invalid, 596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 467 Invalid, 0 Unknown, 114 Unchecked, 0.2s Time] [2022-01-18 15:34:53,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2022-01-18 15:34:53,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 307. [2022-01-18 15:34:53,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 306 states have (on average 2.810457516339869) internal successors, (860), 306 states have internal predecessors, (860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:53,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 860 transitions. [2022-01-18 15:34:53,445 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 860 transitions. Word has length 20 [2022-01-18 15:34:53,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:53,445 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 860 transitions. [2022-01-18 15:34:53,445 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:53,445 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 860 transitions. [2022-01-18 15:34:53,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:53,446 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:53,446 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:53,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:53,646 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable169 [2022-01-18 15:34:53,646 INFO L402 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:53,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:53,646 INFO L85 PathProgramCache]: Analyzing trace with hash 1327557547, now seen corresponding path program 19 times [2022-01-18 15:34:53,646 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:53,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700002114] [2022-01-18 15:34:53,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:53,647 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:53,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:53,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:53,881 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:53,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700002114] [2022-01-18 15:34:53,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700002114] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:53,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549727155] [2022-01-18 15:34:53,881 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:34:53,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:53,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:53,882 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:53,883 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 15:34:53,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:53,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:53,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:54,620 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:54,622 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:34:55,134 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:55,135 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 171 [2022-01-18 15:34:55,137 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 147 [2022-01-18 15:34:56,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:56,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:34:56,376 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:56,376 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:34:56,738 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:56,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:34:56,745 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:34:56,745 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:34:56,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:56,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549727155] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:34:56,874 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:34:56,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:34:56,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1938594037] [2022-01-18 15:34:56,874 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:34:56,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:34:56,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:34:56,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:34:56,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:34:56,875 INFO L87 Difference]: Start difference. First operand 307 states and 860 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:58,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:34:58,326 INFO L93 Difference]: Finished difference Result 562 states and 1578 transitions. [2022-01-18 15:34:58,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:34:58,326 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:34:58,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:34:58,327 INFO L225 Difference]: With dead ends: 562 [2022-01-18 15:34:58,327 INFO L226 Difference]: Without dead ends: 544 [2022-01-18 15:34:58,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=165, Invalid=1241, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:34:58,328 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 77 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 471 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 471 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 195 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:34:58,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 409 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 471 Invalid, 0 Unknown, 195 Unchecked, 0.2s Time] [2022-01-18 15:34:58,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-01-18 15:34:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 313. [2022-01-18 15:34:58,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 312 states have (on average 2.8044871794871793) internal successors, (875), 312 states have internal predecessors, (875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:58,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 875 transitions. [2022-01-18 15:34:58,333 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 875 transitions. Word has length 20 [2022-01-18 15:34:58,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:34:58,333 INFO L470 AbstractCegarLoop]: Abstraction has 313 states and 875 transitions. [2022-01-18 15:34:58,333 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:34:58,333 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 875 transitions. [2022-01-18 15:34:58,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:34:58,334 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:34:58,334 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:34:58,356 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 15:34:58,547 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable170 [2022-01-18 15:34:58,547 INFO L402 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:34:58,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:34:58,548 INFO L85 PathProgramCache]: Analyzing trace with hash -297542677, now seen corresponding path program 20 times [2022-01-18 15:34:58,548 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:34:58,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672462446] [2022-01-18 15:34:58,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:34:58,548 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:34:58,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:34:58,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:34:58,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:34:58,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672462446] [2022-01-18 15:34:58,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672462446] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:34:58,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2060431726] [2022-01-18 15:34:58,764 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:34:58,764 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:34:58,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:34:58,765 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:34:58,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 15:34:58,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:34:58,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:34:58,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:34:58,790 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:34:59,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:59,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:34:59,997 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:34:59,998 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 162 [2022-01-18 15:35:00,000 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 140 [2022-01-18 15:35:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:01,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:01,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:01,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:01,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:01,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:01,957 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:01,957 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:02,074 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:02,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2060431726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:02,074 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:02,074 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:02,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265848662] [2022-01-18 15:35:02,074 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:02,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:02,075 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:02,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:02,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:02,075 INFO L87 Difference]: Start difference. First operand 313 states and 875 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:03,571 INFO L93 Difference]: Finished difference Result 527 states and 1460 transitions. [2022-01-18 15:35:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 15:35:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:03,572 INFO L225 Difference]: With dead ends: 527 [2022-01-18 15:35:03,572 INFO L226 Difference]: Without dead ends: 496 [2022-01-18 15:35:03,572 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=175, Invalid=1231, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:35:03,572 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 109 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 397 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 445 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:03,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 397 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 442 Invalid, 0 Unknown, 445 Unchecked, 0.2s Time] [2022-01-18 15:35:03,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 496 states. [2022-01-18 15:35:03,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 496 to 308. [2022-01-18 15:35:03,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 307 states have (on average 2.811074918566775) internal successors, (863), 307 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:03,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 863 transitions. [2022-01-18 15:35:03,576 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 863 transitions. Word has length 20 [2022-01-18 15:35:03,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:03,576 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 863 transitions. [2022-01-18 15:35:03,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:03,576 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 863 transitions. [2022-01-18 15:35:03,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:03,577 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:03,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:03,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:03,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable171 [2022-01-18 15:35:03,778 INFO L402 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:03,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:03,778 INFO L85 PathProgramCache]: Analyzing trace with hash 1899012353, now seen corresponding path program 21 times [2022-01-18 15:35:03,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:03,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824913384] [2022-01-18 15:35:03,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:03,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:03,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:04,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:04,017 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824913384] [2022-01-18 15:35:04,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824913384] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:04,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [481301398] [2022-01-18 15:35:04,017 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:35:04,017 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:04,017 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:04,020 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:04,021 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 15:35:04,049 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:35:04,050 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:04,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:35:04,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:04,775 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:04,776 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:35:05,846 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:05,847 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 147 [2022-01-18 15:35:05,849 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 147 treesize of output 129 [2022-01-18 15:35:06,374 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:06,374 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:06,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:06,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:06,978 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:06,978 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:06,985 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:06,985 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:07,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:07,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [481301398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:07,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:07,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:07,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814938809] [2022-01-18 15:35:07,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:07,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:07,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:07,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:07,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:07,119 INFO L87 Difference]: Start difference. First operand 308 states and 863 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:07,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:07,871 INFO L93 Difference]: Finished difference Result 513 states and 1452 transitions. [2022-01-18 15:35:07,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:35:07,871 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:07,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:07,872 INFO L225 Difference]: With dead ends: 513 [2022-01-18 15:35:07,872 INFO L226 Difference]: Without dead ends: 506 [2022-01-18 15:35:07,872 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=167, Invalid=1093, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:35:07,873 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 66 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:07,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 292 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 287 Invalid, 0 Unknown, 387 Unchecked, 0.1s Time] [2022-01-18 15:35:07,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2022-01-18 15:35:07,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 315. [2022-01-18 15:35:07,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 314 states have (on average 2.7961783439490446) internal successors, (878), 314 states have internal predecessors, (878), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:07,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 878 transitions. [2022-01-18 15:35:07,878 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 878 transitions. Word has length 20 [2022-01-18 15:35:07,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:07,878 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 878 transitions. [2022-01-18 15:35:07,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:07,878 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 878 transitions. [2022-01-18 15:35:07,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:07,879 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:07,879 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:07,894 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:08,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172,52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:08,083 INFO L402 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:08,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:08,084 INFO L85 PathProgramCache]: Analyzing trace with hash 273912129, now seen corresponding path program 22 times [2022-01-18 15:35:08,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:08,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12315883] [2022-01-18 15:35:08,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:08,084 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:08,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:08,368 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:08,369 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:08,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12315883] [2022-01-18 15:35:08,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12315883] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:08,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755240993] [2022-01-18 15:35:08,369 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:35:08,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:08,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:08,370 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:08,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 15:35:08,395 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:35:08,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:08,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:35:08,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:09,065 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:09,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:35:10,030 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:10,031 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 150 [2022-01-18 15:35:10,034 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 130 [2022-01-18 15:35:10,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:10,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:10,894 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:10,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:11,290 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:11,291 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:35:11,297 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:11,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:35:11,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:11,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755240993] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:11,445 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:11,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:11,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355016082] [2022-01-18 15:35:11,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:11,445 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:11,445 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:11,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:11,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:11,446 INFO L87 Difference]: Start difference. First operand 315 states and 878 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:12,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:12,334 INFO L93 Difference]: Finished difference Result 500 states and 1397 transitions. [2022-01-18 15:35:12,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:35:12,334 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:12,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:12,335 INFO L225 Difference]: With dead ends: 500 [2022-01-18 15:35:12,335 INFO L226 Difference]: Without dead ends: 484 [2022-01-18 15:35:12,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=144, Invalid=1188, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:35:12,335 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 64 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 452 SdHoareTripleChecker+Invalid, 591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 97 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:12,335 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 452 Invalid, 591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 480 Invalid, 0 Unknown, 97 Unchecked, 0.2s Time] [2022-01-18 15:35:12,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2022-01-18 15:35:12,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 319. [2022-01-18 15:35:12,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 319 states, 318 states have (on average 2.7830188679245285) internal successors, (885), 318 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 885 transitions. [2022-01-18 15:35:12,340 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 885 transitions. Word has length 20 [2022-01-18 15:35:12,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:12,341 INFO L470 AbstractCegarLoop]: Abstraction has 319 states and 885 transitions. [2022-01-18 15:35:12,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 885 transitions. [2022-01-18 15:35:12,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:12,341 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:12,341 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:12,363 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:12,555 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173,53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:12,555 INFO L402 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:12,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:12,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1423024321, now seen corresponding path program 23 times [2022-01-18 15:35:12,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:12,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [990787822] [2022-01-18 15:35:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:12,556 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:12,856 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:12,856 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:12,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [990787822] [2022-01-18 15:35:12,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [990787822] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:12,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1769460211] [2022-01-18 15:35:12,856 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:35:12,856 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:12,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:12,858 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:12,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 15:35:12,889 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:35:12,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:12,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:35:12,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:13,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 80 [2022-01-18 15:35:13,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 127 [2022-01-18 15:35:13,693 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 105 [2022-01-18 15:35:14,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:14,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:14,489 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:14,489 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 116 [2022-01-18 15:35:14,865 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:35:14,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 88 [2022-01-18 15:35:14,867 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-01-18 15:35:14,900 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:14,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1769460211] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:14,900 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:14,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:35:14,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840639286] [2022-01-18 15:35:14,900 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:14,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:35:14,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:14,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:35:14,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:35:14,901 INFO L87 Difference]: Start difference. First operand 319 states and 885 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:16,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:16,506 INFO L93 Difference]: Finished difference Result 492 states and 1367 transitions. [2022-01-18 15:35:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:35:16,506 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:16,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:16,507 INFO L225 Difference]: With dead ends: 492 [2022-01-18 15:35:16,507 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 15:35:16,507 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=177, Invalid=1013, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:35:16,508 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 147 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:16,508 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 273 Invalid, 942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:35:16,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 15:35:16,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 310. [2022-01-18 15:35:16,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 309 states have (on average 2.809061488673139) internal successors, (868), 309 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:16,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 868 transitions. [2022-01-18 15:35:16,513 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 868 transitions. Word has length 20 [2022-01-18 15:35:16,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:16,513 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 868 transitions. [2022-01-18 15:35:16,513 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:16,513 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 868 transitions. [2022-01-18 15:35:16,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:16,514 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:16,514 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:16,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:16,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174,54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:16,727 INFO L402 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:16,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:16,728 INFO L85 PathProgramCache]: Analyzing trace with hash 81707215, now seen corresponding path program 24 times [2022-01-18 15:35:16,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:16,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994742162] [2022-01-18 15:35:16,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:16,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:16,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:16,936 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:16,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994742162] [2022-01-18 15:35:16,936 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994742162] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:16,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [691736271] [2022-01-18 15:35:16,936 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:35:16,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:16,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:16,937 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:16,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 15:35:16,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:35:16,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:16,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:35:16,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:17,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:17,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-01-18 15:35:18,884 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:18,884 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 148 [2022-01-18 15:35:18,887 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 128 [2022-01-18 15:35:19,333 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:19,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:19,618 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:19,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:19,929 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:19,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:19,938 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:19,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:20,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:20,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [691736271] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:20,057 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:20,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:20,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710200879] [2022-01-18 15:35:20,058 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:20,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:20,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:20,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:20,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:20,058 INFO L87 Difference]: Start difference. First operand 310 states and 868 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:20,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:20,660 INFO L93 Difference]: Finished difference Result 548 states and 1521 transitions. [2022-01-18 15:35:20,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:35:20,660 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:20,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:20,661 INFO L225 Difference]: With dead ends: 548 [2022-01-18 15:35:20,661 INFO L226 Difference]: Without dead ends: 538 [2022-01-18 15:35:20,661 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:35:20,662 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 109 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 431 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 341 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:20,662 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 469 Invalid, 783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 431 Invalid, 0 Unknown, 341 Unchecked, 0.2s Time] [2022-01-18 15:35:20,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 538 states. [2022-01-18 15:35:20,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 538 to 318. [2022-01-18 15:35:20,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 317 states have (on average 2.7981072555205047) internal successors, (887), 317 states have internal predecessors, (887), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:20,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 887 transitions. [2022-01-18 15:35:20,666 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 887 transitions. Word has length 20 [2022-01-18 15:35:20,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:20,667 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 887 transitions. [2022-01-18 15:35:20,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:20,667 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 887 transitions. [2022-01-18 15:35:20,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:20,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:20,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:20,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Ended with exit code 0 [2022-01-18 15:35:20,867 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175,55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:20,868 INFO L402 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:20,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:20,868 INFO L85 PathProgramCache]: Analyzing trace with hash -107249905, now seen corresponding path program 25 times [2022-01-18 15:35:20,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:20,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497440682] [2022-01-18 15:35:20,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:20,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:20,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:21,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:21,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497440682] [2022-01-18 15:35:21,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497440682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:21,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197432063] [2022-01-18 15:35:21,091 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:35:21,091 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:21,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:21,092 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:21,093 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 15:35:21,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:21,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:35:21,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:21,662 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:21,663 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:35:22,673 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:22,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 125 [2022-01-18 15:35:22,676 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 15:35:23,086 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:23,087 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:23,363 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:23,363 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:23,716 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:23,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:35:23,722 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:23,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:35:23,888 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:23,888 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197432063] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:23,889 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:23,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:23,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709129343] [2022-01-18 15:35:23,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:23,889 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:23,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:23,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:23,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:23,889 INFO L87 Difference]: Start difference. First operand 318 states and 887 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:24,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:24,812 INFO L93 Difference]: Finished difference Result 724 states and 2024 transitions. [2022-01-18 15:35:24,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 15:35:24,812 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:24,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:24,813 INFO L225 Difference]: With dead ends: 724 [2022-01-18 15:35:24,813 INFO L226 Difference]: Without dead ends: 694 [2022-01-18 15:35:24,814 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:35:24,814 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 111 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 716 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 716 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:24,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 663 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 716 Invalid, 0 Unknown, 320 Unchecked, 0.3s Time] [2022-01-18 15:35:24,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-01-18 15:35:24,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 326. [2022-01-18 15:35:24,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 325 states have (on average 2.796923076923077) internal successors, (909), 325 states have internal predecessors, (909), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:24,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 909 transitions. [2022-01-18 15:35:24,820 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 909 transitions. Word has length 20 [2022-01-18 15:35:24,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:24,820 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 909 transitions. [2022-01-18 15:35:24,821 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:24,821 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 909 transitions. [2022-01-18 15:35:24,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:24,821 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:24,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:24,842 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:25,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:25,042 INFO L402 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:25,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:25,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1212952207, now seen corresponding path program 26 times [2022-01-18 15:35:25,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:25,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105715356] [2022-01-18 15:35:25,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:25,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:25,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:25,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:25,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105715356] [2022-01-18 15:35:25,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105715356] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:25,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392597961] [2022-01-18 15:35:25,245 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:35:25,245 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:25,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:25,246 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:25,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 15:35:25,271 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:35:25,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:25,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:35:25,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:25,858 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:25,859 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:35:26,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:26,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 199 treesize of output 173 [2022-01-18 15:35:26,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 147 [2022-01-18 15:35:28,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:28,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:28,519 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:28,519 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:28,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:28,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:28,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:28,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:28,949 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:28,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392597961] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:28,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:28,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:28,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597287243] [2022-01-18 15:35:28,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:28,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:28,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:28,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:28,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:28,951 INFO L87 Difference]: Start difference. First operand 326 states and 909 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:30,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:30,132 INFO L93 Difference]: Finished difference Result 595 states and 1636 transitions. [2022-01-18 15:35:30,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:35:30,132 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:30,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:30,133 INFO L225 Difference]: With dead ends: 595 [2022-01-18 15:35:30,133 INFO L226 Difference]: Without dead ends: 554 [2022-01-18 15:35:30,133 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:35:30,134 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 213 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 1191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 525 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:30,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 443 Invalid, 1191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 626 Invalid, 0 Unknown, 525 Unchecked, 0.3s Time] [2022-01-18 15:35:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 554 states. [2022-01-18 15:35:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 554 to 325. [2022-01-18 15:35:30,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 325 states, 324 states have (on average 2.7962962962962963) internal successors, (906), 324 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:30,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 325 states to 325 states and 906 transitions. [2022-01-18 15:35:30,138 INFO L78 Accepts]: Start accepts. Automaton has 325 states and 906 transitions. Word has length 20 [2022-01-18 15:35:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:30,138 INFO L470 AbstractCegarLoop]: Abstraction has 325 states and 906 transitions. [2022-01-18 15:35:30,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:30,138 INFO L276 IsEmpty]: Start isEmpty. Operand 325 states and 906 transitions. [2022-01-18 15:35:30,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:30,138 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:30,138 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:30,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:30,339 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:30,339 INFO L402 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:30,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:30,339 INFO L85 PathProgramCache]: Analyzing trace with hash -2139629105, now seen corresponding path program 27 times [2022-01-18 15:35:30,339 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:30,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440973070] [2022-01-18 15:35:30,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:30,340 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:30,534 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440973070] [2022-01-18 15:35:30,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440973070] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:30,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682169376] [2022-01-18 15:35:30,534 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:35:30,534 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:30,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:30,535 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:30,536 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 15:35:30,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:35:30,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:30,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:35:30,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:31,276 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:31,277 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-01-18 15:35:32,528 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:32,528 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:35:32,531 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 120 [2022-01-18 15:35:33,105 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:33,105 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:33,384 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:33,384 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:35:33,756 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:33,757 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:33,763 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:33,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:33,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:33,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [682169376] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:33,886 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:33,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:33,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886924035] [2022-01-18 15:35:33,886 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:33,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:33,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:33,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:33,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:33,887 INFO L87 Difference]: Start difference. First operand 325 states and 906 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:34,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:34,778 INFO L93 Difference]: Finished difference Result 497 states and 1397 transitions. [2022-01-18 15:35:34,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:35:34,778 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:34,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:34,779 INFO L225 Difference]: With dead ends: 497 [2022-01-18 15:35:34,779 INFO L226 Difference]: Without dead ends: 477 [2022-01-18 15:35:34,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=165, Invalid=1167, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:35:34,779 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 102 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 405 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:34,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 430 Invalid, 946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 527 Invalid, 0 Unknown, 405 Unchecked, 0.2s Time] [2022-01-18 15:35:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2022-01-18 15:35:34,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 330. [2022-01-18 15:35:34,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.7963525835866263) internal successors, (920), 329 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:34,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 920 transitions. [2022-01-18 15:35:34,783 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 920 transitions. Word has length 20 [2022-01-18 15:35:34,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:34,784 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 920 transitions. [2022-01-18 15:35:34,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:34,784 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 920 transitions. [2022-01-18 15:35:34,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:34,784 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:34,784 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:34,800 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 15:35:34,987 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable178 [2022-01-18 15:35:34,987 INFO L402 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:34,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash 160873035, now seen corresponding path program 28 times [2022-01-18 15:35:34,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:34,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820903696] [2022-01-18 15:35:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:34,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:35,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:35,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:35,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820903696] [2022-01-18 15:35:35,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820903696] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:35,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [400421472] [2022-01-18 15:35:35,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:35:35,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:35,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:35,248 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:35,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 15:35:35,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:35:35,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:35,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:35:35,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:35,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:35,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-01-18 15:35:36,387 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:36,388 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 161 [2022-01-18 15:35:36,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 135 [2022-01-18 15:35:37,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:37,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:37,608 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:37,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:35:38,052 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:38,052 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:35:38,058 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:38,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:35:38,211 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:38,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [400421472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:38,211 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:38,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:38,212 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637349370] [2022-01-18 15:35:38,212 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:38,212 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:38,212 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:38,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:38,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:38,212 INFO L87 Difference]: Start difference. First operand 330 states and 920 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:39,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:39,433 INFO L93 Difference]: Finished difference Result 609 states and 1648 transitions. [2022-01-18 15:35:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:35:39,433 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:39,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:39,434 INFO L225 Difference]: With dead ends: 609 [2022-01-18 15:35:39,434 INFO L226 Difference]: Without dead ends: 559 [2022-01-18 15:35:39,434 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=199, Invalid=1441, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:35:39,435 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 107 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 512 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:39,435 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 512 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 613 Invalid, 0 Unknown, 160 Unchecked, 0.3s Time] [2022-01-18 15:35:39,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 559 states. [2022-01-18 15:35:39,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 559 to 330. [2022-01-18 15:35:39,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 329 states have (on average 2.7963525835866263) internal successors, (920), 329 states have internal predecessors, (920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:39,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 920 transitions. [2022-01-18 15:35:39,439 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 920 transitions. Word has length 20 [2022-01-18 15:35:39,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:39,439 INFO L470 AbstractCegarLoop]: Abstraction has 330 states and 920 transitions. [2022-01-18 15:35:39,439 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 920 transitions. [2022-01-18 15:35:39,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:39,439 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:39,439 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:39,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 15:35:39,640 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable179 [2022-01-18 15:35:39,640 INFO L402 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:39,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:39,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1987923501, now seen corresponding path program 29 times [2022-01-18 15:35:39,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:39,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370972704] [2022-01-18 15:35:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:39,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:39,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:39,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:39,919 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370972704] [2022-01-18 15:35:39,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370972704] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853396775] [2022-01-18 15:35:39,920 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:35:39,920 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:39,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:39,921 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:39,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 15:35:39,952 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 15:35:39,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:39,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:35:39,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:40,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 94 treesize of output 80 [2022-01-18 15:35:40,513 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 141 [2022-01-18 15:35:40,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-01-18 15:35:41,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:41,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:41,996 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:41,997 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 128 [2022-01-18 15:35:42,418 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:35:42,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:35:42,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:35:42,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:42,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853396775] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:42,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:42,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:35:42,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782303928] [2022-01-18 15:35:42,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:42,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:35:42,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:35:42,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:35:42,456 INFO L87 Difference]: Start difference. First operand 330 states and 920 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:45,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:45,933 INFO L93 Difference]: Finished difference Result 613 states and 1651 transitions. [2022-01-18 15:35:45,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:35:45,933 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:45,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:45,934 INFO L225 Difference]: With dead ends: 613 [2022-01-18 15:35:45,934 INFO L226 Difference]: Without dead ends: 539 [2022-01-18 15:35:45,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=286, Invalid=1436, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:35:45,935 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 221 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 1220 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:45,935 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [221 Valid, 426 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1220 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 15:35:45,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2022-01-18 15:35:45,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 337. [2022-01-18 15:35:45,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 336 states have (on average 2.824404761904762) internal successors, (949), 336 states have internal predecessors, (949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:45,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 949 transitions. [2022-01-18 15:35:45,941 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 949 transitions. Word has length 20 [2022-01-18 15:35:45,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:45,941 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 949 transitions. [2022-01-18 15:35:45,941 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:45,941 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 949 transitions. [2022-01-18 15:35:45,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:45,941 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:45,942 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:45,958 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 15:35:46,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable180 [2022-01-18 15:35:46,147 INFO L402 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:46,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:46,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1555865241, now seen corresponding path program 30 times [2022-01-18 15:35:46,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:46,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653387873] [2022-01-18 15:35:46,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:46,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:46,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:46,370 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:46,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:46,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653387873] [2022-01-18 15:35:46,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653387873] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:46,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53742645] [2022-01-18 15:35:46,370 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:35:46,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:46,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:46,372 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:46,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 15:35:46,408 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:35:46,409 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:46,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:35:46,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:46,919 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:46,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:35:48,838 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:48,839 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 150 [2022-01-18 15:35:48,841 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 132 [2022-01-18 15:35:49,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:49,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:49,610 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:49,610 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:49,960 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:49,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:49,967 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:49,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:50,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:50,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53742645] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:50,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:50,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:50,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229400981] [2022-01-18 15:35:50,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:50,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:50,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:50,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:50,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:50,094 INFO L87 Difference]: Start difference. First operand 337 states and 949 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:50,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:50,885 INFO L93 Difference]: Finished difference Result 755 states and 2100 transitions. [2022-01-18 15:35:50,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 15:35:50,885 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:50,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:50,886 INFO L225 Difference]: With dead ends: 755 [2022-01-18 15:35:50,886 INFO L226 Difference]: Without dead ends: 742 [2022-01-18 15:35:50,887 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:35:50,887 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 173 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 964 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 363 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:50,887 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 575 Invalid, 964 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 584 Invalid, 0 Unknown, 363 Unchecked, 0.2s Time] [2022-01-18 15:35:50,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 742 states. [2022-01-18 15:35:50,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 742 to 345. [2022-01-18 15:35:50,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 344 states have (on average 2.8343023255813953) internal successors, (975), 344 states have internal predecessors, (975), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:50,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 975 transitions. [2022-01-18 15:35:50,892 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 975 transitions. Word has length 20 [2022-01-18 15:35:50,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:50,892 INFO L470 AbstractCegarLoop]: Abstraction has 345 states and 975 transitions. [2022-01-18 15:35:50,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:50,892 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 975 transitions. [2022-01-18 15:35:50,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:50,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:50,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:50,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Ended with exit code 0 [2022-01-18 15:35:51,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:51,093 INFO L402 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:51,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:51,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1744822361, now seen corresponding path program 31 times [2022-01-18 15:35:51,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:51,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315959830] [2022-01-18 15:35:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:51,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:51,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:51,330 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:51,330 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:51,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315959830] [2022-01-18 15:35:51,330 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315959830] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:51,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2139908662] [2022-01-18 15:35:51,330 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:35:51,331 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:51,331 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:51,332 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:51,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 15:35:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:51,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:35:51,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:51,842 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:51,843 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:35:53,058 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:53,058 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 124 [2022-01-18 15:35:53,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 15:35:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:53,512 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:53,815 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:53,815 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:54,301 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:54,302 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:35:54,308 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:54,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:35:54,476 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:54,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2139908662] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:54,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:54,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:54,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129502358] [2022-01-18 15:35:54,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:54,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:54,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:54,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:54,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:54,477 INFO L87 Difference]: Start difference. First operand 345 states and 975 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:55,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:55,061 INFO L93 Difference]: Finished difference Result 599 states and 1681 transitions. [2022-01-18 15:35:55,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 15:35:55,061 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:55,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:55,062 INFO L225 Difference]: With dead ends: 599 [2022-01-18 15:35:55,062 INFO L226 Difference]: Without dead ends: 579 [2022-01-18 15:35:55,062 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:35:55,062 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 115 mSDsluCounter, 740 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 292 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:55,062 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [115 Valid, 488 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 417 Invalid, 0 Unknown, 292 Unchecked, 0.2s Time] [2022-01-18 15:35:55,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 579 states. [2022-01-18 15:35:55,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 579 to 349. [2022-01-18 15:35:55,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 349 states, 348 states have (on average 2.8160919540229883) internal successors, (980), 348 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:55,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 349 states to 349 states and 980 transitions. [2022-01-18 15:35:55,067 INFO L78 Accepts]: Start accepts. Automaton has 349 states and 980 transitions. Word has length 20 [2022-01-18 15:35:55,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:55,067 INFO L470 AbstractCegarLoop]: Abstraction has 349 states and 980 transitions. [2022-01-18 15:35:55,067 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:55,067 INFO L276 IsEmpty]: Start isEmpty. Operand 349 states and 980 transitions. [2022-01-18 15:35:55,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:55,068 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:55,068 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:55,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 15:35:55,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:55,268 INFO L402 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:35:55,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:35:55,269 INFO L85 PathProgramCache]: Analyzing trace with hash 1920663453, now seen corresponding path program 32 times [2022-01-18 15:35:55,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:35:55,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571880145] [2022-01-18 15:35:55,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:35:55,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:35:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:35:55,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:55,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:35:55,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571880145] [2022-01-18 15:35:55,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571880145] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:35:55,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2052153172] [2022-01-18 15:35:55,485 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:35:55,485 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:35:55,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:35:55,487 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:35:55,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 15:35:55,510 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:35:55,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:35:55,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:35:55,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:35:56,055 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:56,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:35:57,961 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:35:57,961 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 152 [2022-01-18 15:35:57,964 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 132 [2022-01-18 15:35:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:58,445 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:35:58,733 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:58,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:35:59,036 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:59,037 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:35:59,045 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:35:59,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:35:59,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:35:59,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2052153172] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:35:59,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:35:59,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:35:59,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746946883] [2022-01-18 15:35:59,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:35:59,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:35:59,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:35:59,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:35:59,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:35:59,203 INFO L87 Difference]: Start difference. First operand 349 states and 980 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:59,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:35:59,893 INFO L93 Difference]: Finished difference Result 736 states and 2063 transitions. [2022-01-18 15:35:59,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:35:59,893 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:35:59,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:35:59,895 INFO L225 Difference]: With dead ends: 736 [2022-01-18 15:35:59,895 INFO L226 Difference]: Without dead ends: 716 [2022-01-18 15:35:59,895 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=143, Invalid=1263, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:35:59,895 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 146 mSDsluCounter, 974 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 505 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:35:59,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 562 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 494 Invalid, 0 Unknown, 505 Unchecked, 0.2s Time] [2022-01-18 15:35:59,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 716 states. [2022-01-18 15:35:59,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 716 to 355. [2022-01-18 15:35:59,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 354 states have (on average 2.827683615819209) internal successors, (1001), 354 states have internal predecessors, (1001), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:59,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 1001 transitions. [2022-01-18 15:35:59,900 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 1001 transitions. Word has length 20 [2022-01-18 15:35:59,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:35:59,900 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 1001 transitions. [2022-01-18 15:35:59,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:35:59,900 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 1001 transitions. [2022-01-18 15:35:59,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:35:59,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:35:59,900 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:35:59,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 15:36:00,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable183 [2022-01-18 15:36:00,101 INFO L402 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:00,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:00,101 INFO L85 PathProgramCache]: Analyzing trace with hash -424620249, now seen corresponding path program 33 times [2022-01-18 15:36:00,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:00,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832651915] [2022-01-18 15:36:00,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:00,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:00,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:00,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:00,355 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:00,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832651915] [2022-01-18 15:36:00,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832651915] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:00,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465900998] [2022-01-18 15:36:00,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:36:00,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:00,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:00,357 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:00,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 15:36:00,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:36:00,382 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:00,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:00,383 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:00,888 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:00,888 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:36:01,818 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:01,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 158 [2022-01-18 15:36:01,821 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2022-01-18 15:36:02,874 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:02,874 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:03,209 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:03,210 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:36:03,500 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:03,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:36:03,507 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:03,507 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:36:03,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:03,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [465900998] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:03,645 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:03,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:03,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864242126] [2022-01-18 15:36:03,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:03,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:03,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:03,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:03,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:03,646 INFO L87 Difference]: Start difference. First operand 355 states and 1001 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:04,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:04,840 INFO L93 Difference]: Finished difference Result 635 states and 1747 transitions. [2022-01-18 15:36:04,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:36:04,840 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:04,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:04,841 INFO L225 Difference]: With dead ends: 635 [2022-01-18 15:36:04,841 INFO L226 Difference]: Without dead ends: 594 [2022-01-18 15:36:04,841 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=185, Invalid=1375, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:36:04,841 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 206 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 444 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 391 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:04,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 444 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 612 Invalid, 0 Unknown, 391 Unchecked, 0.3s Time] [2022-01-18 15:36:04,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 594 states. [2022-01-18 15:36:04,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 594 to 354. [2022-01-18 15:36:04,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 353 states have (on average 2.8271954674220963) internal successors, (998), 353 states have internal predecessors, (998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:04,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 998 transitions. [2022-01-18 15:36:04,846 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 998 transitions. Word has length 20 [2022-01-18 15:36:04,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:04,846 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 998 transitions. [2022-01-18 15:36:04,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:04,847 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 998 transitions. [2022-01-18 15:36:04,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:04,847 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:04,847 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:04,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 15:36:05,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184,64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:05,047 INFO L402 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:05,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:05,048 INFO L85 PathProgramCache]: Analyzing trace with hash 2069957677, now seen corresponding path program 34 times [2022-01-18 15:36:05,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:05,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865157556] [2022-01-18 15:36:05,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:05,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:05,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:05,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:05,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865157556] [2022-01-18 15:36:05,243 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865157556] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:05,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389411393] [2022-01-18 15:36:05,243 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:36:05,243 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:05,243 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:05,244 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:05,245 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 15:36:05,268 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:36:05,268 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:05,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:36:05,269 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:05,716 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:05,716 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:36:07,128 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:07,129 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:36:07,131 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 120 [2022-01-18 15:36:07,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:07,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:07,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:07,906 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:36:08,222 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:08,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:36:08,228 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:08,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:36:08,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:08,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389411393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:08,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:08,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:08,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098658199] [2022-01-18 15:36:08,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:08,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:08,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:08,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:08,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:08,357 INFO L87 Difference]: Start difference. First operand 354 states and 998 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:09,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:09,093 INFO L93 Difference]: Finished difference Result 725 states and 1981 transitions. [2022-01-18 15:36:09,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:36:09,093 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:09,094 INFO L225 Difference]: With dead ends: 725 [2022-01-18 15:36:09,094 INFO L226 Difference]: Without dead ends: 712 [2022-01-18 15:36:09,094 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=1333, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:36:09,095 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 133 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 511 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 651 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 511 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 513 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:09,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 651 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 511 Invalid, 0 Unknown, 513 Unchecked, 0.2s Time] [2022-01-18 15:36:09,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-01-18 15:36:09,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 382. [2022-01-18 15:36:09,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 381 states have (on average 2.8241469816272966) internal successors, (1076), 381 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:09,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 1076 transitions. [2022-01-18 15:36:09,100 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 1076 transitions. Word has length 20 [2022-01-18 15:36:09,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:09,100 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 1076 transitions. [2022-01-18 15:36:09,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:09,100 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 1076 transitions. [2022-01-18 15:36:09,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:09,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:09,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:09,116 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Ended with exit code 0 [2022-01-18 15:36:09,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:09,301 INFO L402 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:09,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:09,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1881000557, now seen corresponding path program 35 times [2022-01-18 15:36:09,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:09,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369720723] [2022-01-18 15:36:09,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:09,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:09,542 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:09,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369720723] [2022-01-18 15:36:09,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369720723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:09,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550713691] [2022-01-18 15:36:09,543 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:36:09,543 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:09,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:09,544 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:09,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 15:36:09,580 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:36:09,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:09,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:36:09,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:09,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 96 [2022-01-18 15:36:10,428 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 137 [2022-01-18 15:36:10,430 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 119 [2022-01-18 15:36:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:10,781 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:11,055 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:11,055 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-01-18 15:36:11,326 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:36:11,326 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:36:11,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:36:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:11,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [550713691] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:11,363 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:11,363 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:36:11,363 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248102053] [2022-01-18 15:36:11,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:11,364 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:36:11,364 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:11,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:36:11,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:36:11,364 INFO L87 Difference]: Start difference. First operand 382 states and 1076 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:16,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:16,288 INFO L93 Difference]: Finished difference Result 750 states and 2030 transitions. [2022-01-18 15:36:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 15:36:16,288 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:16,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:16,289 INFO L225 Difference]: With dead ends: 750 [2022-01-18 15:36:16,289 INFO L226 Difference]: Without dead ends: 638 [2022-01-18 15:36:16,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=353, Invalid=1539, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 15:36:16,290 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 263 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:16,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 381 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 15:36:16,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-01-18 15:36:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 323. [2022-01-18 15:36:16,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 323 states, 322 states have (on average 2.8354037267080745) internal successors, (913), 322 states have internal predecessors, (913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:16,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 913 transitions. [2022-01-18 15:36:16,295 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 913 transitions. Word has length 20 [2022-01-18 15:36:16,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:16,295 INFO L470 AbstractCegarLoop]: Abstraction has 323 states and 913 transitions. [2022-01-18 15:36:16,295 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:16,295 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 913 transitions. [2022-01-18 15:36:16,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:16,296 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:16,296 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:16,311 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Ended with exit code 0 [2022-01-18 15:36:16,496 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable186 [2022-01-18 15:36:16,496 INFO L402 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:16,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:16,497 INFO L85 PathProgramCache]: Analyzing trace with hash -1628512153, now seen corresponding path program 36 times [2022-01-18 15:36:16,497 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:16,497 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803644256] [2022-01-18 15:36:16,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:16,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:16,705 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:16,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:16,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803644256] [2022-01-18 15:36:16,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803644256] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:16,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985014099] [2022-01-18 15:36:16,706 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:36:16,706 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:16,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:16,707 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:16,707 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 15:36:16,733 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 15:36:16,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:16,733 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:16,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:17,241 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:17,241 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 15:36:18,222 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:18,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 169 [2022-01-18 15:36:18,225 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 143 [2022-01-18 15:36:19,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:19,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:19,659 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:19,660 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:36:19,937 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:19,937 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:36:19,946 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:19,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:36:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:20,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985014099] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:20,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:20,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:20,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692714847] [2022-01-18 15:36:20,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:20,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:20,060 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:20,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:20,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:20,060 INFO L87 Difference]: Start difference. First operand 323 states and 913 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:21,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:21,681 INFO L93 Difference]: Finished difference Result 596 states and 1673 transitions. [2022-01-18 15:36:21,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 15:36:21,681 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:21,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:21,682 INFO L225 Difference]: With dead ends: 596 [2022-01-18 15:36:21,682 INFO L226 Difference]: Without dead ends: 520 [2022-01-18 15:36:21,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 255 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=216, Invalid=1590, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 15:36:21,683 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 129 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 459 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 176 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:21,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 425 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 459 Invalid, 0 Unknown, 176 Unchecked, 0.2s Time] [2022-01-18 15:36:21,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520 states. [2022-01-18 15:36:21,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520 to 360. [2022-01-18 15:36:21,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 359 states have (on average 2.8746518105849583) internal successors, (1032), 359 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:21,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 1032 transitions. [2022-01-18 15:36:21,689 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 1032 transitions. Word has length 20 [2022-01-18 15:36:21,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:21,689 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 1032 transitions. [2022-01-18 15:36:21,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 1032 transitions. [2022-01-18 15:36:21,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:21,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:21,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:21,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 15:36:21,912 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:21,912 INFO L402 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:21,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1602736669, now seen corresponding path program 37 times [2022-01-18 15:36:21,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:21,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174191311] [2022-01-18 15:36:21,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:21,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:21,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:22,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:22,149 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:22,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174191311] [2022-01-18 15:36:22,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174191311] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:22,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [509245616] [2022-01-18 15:36:22,150 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:36:22,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:22,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:22,160 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:22,162 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 15:36:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:22,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:36:22,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:22,749 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:22,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 106 [2022-01-18 15:36:23,637 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:23,638 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 195 treesize of output 169 [2022-01-18 15:36:23,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 143 [2022-01-18 15:36:24,616 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:24,616 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:24,971 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:24,971 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:36:25,300 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:25,300 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:36:25,306 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:25,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:36:25,450 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:25,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [509245616] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:25,450 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:25,450 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:25,450 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682465837] [2022-01-18 15:36:25,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:25,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:25,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:25,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:25,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:25,451 INFO L87 Difference]: Start difference. First operand 360 states and 1032 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:26,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:26,768 INFO L93 Difference]: Finished difference Result 699 states and 1876 transitions. [2022-01-18 15:36:26,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:36:26,769 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:26,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:26,769 INFO L225 Difference]: With dead ends: 699 [2022-01-18 15:36:26,770 INFO L226 Difference]: Without dead ends: 644 [2022-01-18 15:36:26,770 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 15:36:26,770 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 212 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 212 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 1252 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 542 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:26,770 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [212 Valid, 475 Invalid, 1252 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 662 Invalid, 0 Unknown, 542 Unchecked, 0.3s Time] [2022-01-18 15:36:26,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 644 states. [2022-01-18 15:36:26,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 644 to 368. [2022-01-18 15:36:26,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.904632152588556) internal successors, (1066), 367 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:26,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1066 transitions. [2022-01-18 15:36:26,777 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1066 transitions. Word has length 20 [2022-01-18 15:36:26,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:26,777 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1066 transitions. [2022-01-18 15:36:26,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:26,777 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1066 transitions. [2022-01-18 15:36:26,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:26,778 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:26,778 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:26,799 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 15:36:26,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable188 [2022-01-18 15:36:26,993 INFO L402 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:26,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:26,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1600110893, now seen corresponding path program 38 times [2022-01-18 15:36:26,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:26,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658219728] [2022-01-18 15:36:26,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:26,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:27,190 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:27,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:27,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658219728] [2022-01-18 15:36:27,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658219728] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:27,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505366678] [2022-01-18 15:36:27,190 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:36:27,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:27,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:27,192 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:27,192 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 15:36:27,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:36:27,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:27,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:27,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:27,722 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:27,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:36:28,763 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:28,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 168 [2022-01-18 15:36:28,766 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 168 treesize of output 146 [2022-01-18 15:36:29,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:29,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:30,287 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:30,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:36:30,576 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:30,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:36:30,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:30,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:36:30,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:30,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505366678] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:30,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:30,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:30,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537024383] [2022-01-18 15:36:30,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:30,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:30,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:30,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:30,699 INFO L87 Difference]: Start difference. First operand 368 states and 1066 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:32,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:32,090 INFO L93 Difference]: Finished difference Result 611 states and 1692 transitions. [2022-01-18 15:36:32,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:36:32,090 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:32,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:32,091 INFO L225 Difference]: With dead ends: 611 [2022-01-18 15:36:32,091 INFO L226 Difference]: Without dead ends: 570 [2022-01-18 15:36:32,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=217, Invalid=1589, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 15:36:32,091 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 154 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:32,092 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 495 Invalid, 923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 700 Invalid, 0 Unknown, 174 Unchecked, 0.3s Time] [2022-01-18 15:36:32,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2022-01-18 15:36:32,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 368. [2022-01-18 15:36:32,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 2.904632152588556) internal successors, (1066), 367 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 1066 transitions. [2022-01-18 15:36:32,096 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 1066 transitions. Word has length 20 [2022-01-18 15:36:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:32,097 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 1066 transitions. [2022-01-18 15:36:32,097 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:32,097 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 1066 transitions. [2022-01-18 15:36:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:32,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:32,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:32,113 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Ended with exit code 0 [2022-01-18 15:36:32,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable189 [2022-01-18 15:36:32,298 INFO L402 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:32,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:32,298 INFO L85 PathProgramCache]: Analyzing trace with hash -805572465, now seen corresponding path program 39 times [2022-01-18 15:36:32,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:32,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738956015] [2022-01-18 15:36:32,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:32,298 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:32,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:32,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:32,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:32,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738956015] [2022-01-18 15:36:32,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738956015] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:32,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [977164635] [2022-01-18 15:36:32,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:36:32,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:32,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:32,523 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:32,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 15:36:32,548 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:36:32,548 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:32,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:32,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:33,224 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:33,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-01-18 15:36:34,306 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:34,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 145 [2022-01-18 15:36:34,309 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 123 [2022-01-18 15:36:34,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:34,813 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:35,124 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:35,124 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:36:35,448 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:35,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:36:35,455 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:35,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:36:35,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:35,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [977164635] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:35,588 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:35,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:35,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191867344] [2022-01-18 15:36:35,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:35,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:35,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:35,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:35,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:35,589 INFO L87 Difference]: Start difference. First operand 368 states and 1066 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:36,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:36,460 INFO L93 Difference]: Finished difference Result 543 states and 1546 transitions. [2022-01-18 15:36:36,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:36:36,460 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:36,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:36,461 INFO L225 Difference]: With dead ends: 543 [2022-01-18 15:36:36,461 INFO L226 Difference]: Without dead ends: 514 [2022-01-18 15:36:36,461 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:36:36,461 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 89 mSDsluCounter, 612 mSDsCounter, 0 mSdLazyCounter, 491 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 491 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:36,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 426 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 491 Invalid, 0 Unknown, 98 Unchecked, 0.2s Time] [2022-01-18 15:36:36,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2022-01-18 15:36:36,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 386. [2022-01-18 15:36:36,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 385 states have (on average 2.9064935064935065) internal successors, (1119), 385 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:36,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 1119 transitions. [2022-01-18 15:36:36,466 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 1119 transitions. Word has length 20 [2022-01-18 15:36:36,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:36,466 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 1119 transitions. [2022-01-18 15:36:36,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:36,466 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 1119 transitions. [2022-01-18 15:36:36,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:36,467 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:36,467 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:36,482 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 15:36:36,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:36,669 INFO L402 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:36,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:36,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1815649575, now seen corresponding path program 40 times [2022-01-18 15:36:36,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:36,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807024697] [2022-01-18 15:36:36,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:36,669 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:36,863 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:36,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:36,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807024697] [2022-01-18 15:36:36,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807024697] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:36,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529006435] [2022-01-18 15:36:36,864 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:36:36,864 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:36,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:36,865 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:36,866 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 15:36:36,890 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:36:36,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:36,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:36:36,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:37,430 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:37,431 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-01-18 15:36:38,483 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:38,484 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 134 [2022-01-18 15:36:38,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 134 treesize of output 116 [2022-01-18 15:36:38,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:38,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:39,279 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:39,279 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:36:39,679 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:39,679 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:36:39,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:39,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:36:39,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:39,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [529006435] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:39,834 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:39,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:39,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857569885] [2022-01-18 15:36:39,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:39,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:39,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:39,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:39,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:39,835 INFO L87 Difference]: Start difference. First operand 386 states and 1119 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:40,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:40,848 INFO L93 Difference]: Finished difference Result 543 states and 1607 transitions. [2022-01-18 15:36:40,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:36:40,848 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:40,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:40,849 INFO L225 Difference]: With dead ends: 543 [2022-01-18 15:36:40,849 INFO L226 Difference]: Without dead ends: 536 [2022-01-18 15:36:40,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=186, Invalid=1296, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:36:40,850 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 83 mSDsluCounter, 613 mSDsCounter, 0 mSdLazyCounter, 369 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 370 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 387 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:40,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 370 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 369 Invalid, 0 Unknown, 387 Unchecked, 0.1s Time] [2022-01-18 15:36:40,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 536 states. [2022-01-18 15:36:40,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 536 to 402. [2022-01-18 15:36:40,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402 states, 401 states have (on average 2.907730673316708) internal successors, (1166), 401 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:40,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402 states to 402 states and 1166 transitions. [2022-01-18 15:36:40,855 INFO L78 Accepts]: Start accepts. Automaton has 402 states and 1166 transitions. Word has length 20 [2022-01-18 15:36:40,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:40,855 INFO L470 AbstractCegarLoop]: Abstraction has 402 states and 1166 transitions. [2022-01-18 15:36:40,855 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:40,855 INFO L276 IsEmpty]: Start isEmpty. Operand 402 states and 1166 transitions. [2022-01-18 15:36:40,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:40,856 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:40,856 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:40,873 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 15:36:41,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:41,059 INFO L402 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:41,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:41,060 INFO L85 PathProgramCache]: Analyzing trace with hash -759784723, now seen corresponding path program 41 times [2022-01-18 15:36:41,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:41,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508158893] [2022-01-18 15:36:41,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:41,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:41,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:41,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:41,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508158893] [2022-01-18 15:36:41,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508158893] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:41,264 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2144334283] [2022-01-18 15:36:41,264 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:36:41,264 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:41,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:41,265 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:41,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 15:36:41,291 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:36:41,291 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:41,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:41,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:41,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 78 [2022-01-18 15:36:42,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 126 [2022-01-18 15:36:42,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 126 treesize of output 108 [2022-01-18 15:36:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:42,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:42,749 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:42,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:36:43,127 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:36:43,127 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 77 [2022-01-18 15:36:43,130 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-01-18 15:36:43,175 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:43,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2144334283] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:43,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:43,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:36:43,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875050188] [2022-01-18 15:36:43,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:43,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:36:43,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:43,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:36:43,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:36:43,176 INFO L87 Difference]: Start difference. First operand 402 states and 1166 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:45,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:45,860 INFO L93 Difference]: Finished difference Result 631 states and 1773 transitions. [2022-01-18 15:36:45,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:36:45,860 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:45,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:45,861 INFO L225 Difference]: With dead ends: 631 [2022-01-18 15:36:45,861 INFO L226 Difference]: Without dead ends: 544 [2022-01-18 15:36:45,861 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=259, Invalid=1301, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:36:45,861 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 177 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1045 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1045 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:45,862 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 351 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1045 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:36:45,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2022-01-18 15:36:45,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 373. [2022-01-18 15:36:45,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 372 states have (on average 2.911290322580645) internal successors, (1083), 372 states have internal predecessors, (1083), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:45,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 1083 transitions. [2022-01-18 15:36:45,867 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 1083 transitions. Word has length 20 [2022-01-18 15:36:45,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:45,867 INFO L470 AbstractCegarLoop]: Abstraction has 373 states and 1083 transitions. [2022-01-18 15:36:45,867 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:45,867 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 1083 transitions. [2022-01-18 15:36:45,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:45,867 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:45,868 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:45,883 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-01-18 15:36:46,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:46,068 INFO L402 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:46,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:46,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2000997617, now seen corresponding path program 42 times [2022-01-18 15:36:46,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:46,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357869116] [2022-01-18 15:36:46,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:46,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:46,311 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:46,311 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357869116] [2022-01-18 15:36:46,311 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357869116] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:46,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50365549] [2022-01-18 15:36:46,311 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:36:46,311 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:46,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:46,312 INFO L229 MonitoredProcess]: Starting monitored process 73 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:46,314 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Waiting until timeout for monitored process [2022-01-18 15:36:46,354 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:36:46,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:46,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:46,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:47,042 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:47,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-01-18 15:36:47,932 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:47,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2022-01-18 15:36:47,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 126 [2022-01-18 15:36:48,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:48,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:49,246 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:49,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 98 [2022-01-18 15:36:49,613 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:49,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:36:49,619 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:49,620 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:36:49,738 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:49,738 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50365549] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:49,738 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:49,738 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:49,738 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117277035] [2022-01-18 15:36:49,739 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:49,739 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:49,739 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:49,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:49,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:49,739 INFO L87 Difference]: Start difference. First operand 373 states and 1083 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:51,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:51,778 INFO L93 Difference]: Finished difference Result 716 states and 1909 transitions. [2022-01-18 15:36:51,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 15:36:51,778 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:51,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:51,780 INFO L225 Difference]: With dead ends: 716 [2022-01-18 15:36:51,780 INFO L226 Difference]: Without dead ends: 657 [2022-01-18 15:36:51,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=252, Invalid=1818, Unknown=0, NotChecked=0, Total=2070 [2022-01-18 15:36:51,780 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 200 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 602 SdHoareTripleChecker+Invalid, 1250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 320 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:51,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 602 Invalid, 1250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 875 Invalid, 0 Unknown, 320 Unchecked, 0.4s Time] [2022-01-18 15:36:51,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 657 states. [2022-01-18 15:36:51,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 657 to 384. [2022-01-18 15:36:51,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 383 states have (on average 2.93733681462141) internal successors, (1125), 383 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:51,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 1125 transitions. [2022-01-18 15:36:51,785 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 1125 transitions. Word has length 20 [2022-01-18 15:36:51,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:51,785 INFO L470 AbstractCegarLoop]: Abstraction has 384 states and 1125 transitions. [2022-01-18 15:36:51,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:51,786 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 1125 transitions. [2022-01-18 15:36:51,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:51,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:51,786 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:51,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (73)] Ended with exit code 0 [2022-01-18 15:36:51,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 73 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable193 [2022-01-18 15:36:51,987 INFO L402 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:51,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:51,987 INFO L85 PathProgramCache]: Analyzing trace with hash 116771883, now seen corresponding path program 43 times [2022-01-18 15:36:51,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:51,987 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425420977] [2022-01-18 15:36:51,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:51,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:51,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:52,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:52,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:52,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425420977] [2022-01-18 15:36:52,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425420977] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:52,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145919206] [2022-01-18 15:36:52,206 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:36:52,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:52,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:52,207 INFO L229 MonitoredProcess]: Starting monitored process 74 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:52,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Waiting until timeout for monitored process [2022-01-18 15:36:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:52,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:36:52,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:52,941 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:52,942 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 111 [2022-01-18 15:36:53,524 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:53,525 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 159 [2022-01-18 15:36:53,527 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 133 [2022-01-18 15:36:54,474 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:54,474 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:36:54,792 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:54,793 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:36:55,179 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:55,180 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:36:55,186 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:36:55,186 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:36:55,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:55,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1145919206] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:36:55,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:36:55,318 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:36:55,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048163665] [2022-01-18 15:36:55,318 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:36:55,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:36:55,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:36:55,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:36:55,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:36:55,318 INFO L87 Difference]: Start difference. First operand 384 states and 1125 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:56,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:36:56,946 INFO L93 Difference]: Finished difference Result 747 states and 2172 transitions. [2022-01-18 15:36:56,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 15:36:56,946 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:36:56,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:36:56,947 INFO L225 Difference]: With dead ends: 747 [2022-01-18 15:36:56,947 INFO L226 Difference]: Without dead ends: 659 [2022-01-18 15:36:56,948 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 25 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=249, Invalid=1913, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 15:36:56,948 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 121 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 1034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 351 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:36:56,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 729 Invalid, 1034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 635 Invalid, 0 Unknown, 351 Unchecked, 0.3s Time] [2022-01-18 15:36:56,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-01-18 15:36:56,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 405. [2022-01-18 15:36:56,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 2.967821782178218) internal successors, (1199), 404 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:56,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1199 transitions. [2022-01-18 15:36:56,953 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1199 transitions. Word has length 20 [2022-01-18 15:36:56,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:36:56,953 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1199 transitions. [2022-01-18 15:36:56,953 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:36:56,953 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1199 transitions. [2022-01-18 15:36:56,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:36:56,954 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:36:56,954 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:36:56,971 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (74)] Forceful destruction successful, exit code 0 [2022-01-18 15:36:57,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194,74 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:57,161 INFO L402 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:36:57,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:36:57,161 INFO L85 PathProgramCache]: Analyzing trace with hash 142547367, now seen corresponding path program 44 times [2022-01-18 15:36:57,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:36:57,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252122790] [2022-01-18 15:36:57,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:36:57,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:36:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:36:57,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:57,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:36:57,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252122790] [2022-01-18 15:36:57,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252122790] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:36:57,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1953871951] [2022-01-18 15:36:57,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:36:57,377 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:36:57,377 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:36:57,378 INFO L229 MonitoredProcess]: Starting monitored process 75 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:36:57,379 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-01-18 15:36:57,402 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:36:57,403 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:36:57,403 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:36:57,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:36:58,077 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:58,077 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 90 [2022-01-18 15:36:58,571 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:36:58,572 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 158 [2022-01-18 15:36:58,575 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2022-01-18 15:36:59,709 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:36:59,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:00,029 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:00,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:37:00,497 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:00,497 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:00,504 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:00,504 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:00,634 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:00,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1953871951] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:00,634 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:00,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:00,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138384870] [2022-01-18 15:37:00,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:00,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:00,635 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:00,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:00,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:00,635 INFO L87 Difference]: Start difference. First operand 405 states and 1199 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:02,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:02,143 INFO L93 Difference]: Finished difference Result 669 states and 1889 transitions. [2022-01-18 15:37:02,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:37:02,143 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:02,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:02,144 INFO L225 Difference]: With dead ends: 669 [2022-01-18 15:37:02,144 INFO L226 Difference]: Without dead ends: 610 [2022-01-18 15:37:02,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=219, Invalid=1503, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:37:02,144 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 146 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 1090 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 215 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:02,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 510 Invalid, 1090 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 831 Invalid, 0 Unknown, 215 Unchecked, 0.4s Time] [2022-01-18 15:37:02,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-01-18 15:37:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 405. [2022-01-18 15:37:02,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 405 states, 404 states have (on average 2.952970297029703) internal successors, (1193), 404 states have internal predecessors, (1193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 405 states to 405 states and 1193 transitions. [2022-01-18 15:37:02,149 INFO L78 Accepts]: Start accepts. Automaton has 405 states and 1193 transitions. Word has length 20 [2022-01-18 15:37:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:02,149 INFO L470 AbstractCegarLoop]: Abstraction has 405 states and 1193 transitions. [2022-01-18 15:37:02,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 405 states and 1193 transitions. [2022-01-18 15:37:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:02,150 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:02,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:02,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-01-18 15:37:02,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195,75 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:02,351 INFO L402 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:02,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:02,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1919598561, now seen corresponding path program 45 times [2022-01-18 15:37:02,351 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:02,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [571792455] [2022-01-18 15:37:02,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:02,351 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:02,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:02,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:02,569 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:02,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [571792455] [2022-01-18 15:37:02,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [571792455] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:02,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048812033] [2022-01-18 15:37:02,569 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:37:02,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:02,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:02,570 INFO L229 MonitoredProcess]: Starting monitored process 76 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:02,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Waiting until timeout for monitored process [2022-01-18 15:37:02,595 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:37:02,595 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:02,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:02,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:03,319 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:03,319 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-01-18 15:37:03,747 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:03,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 160 [2022-01-18 15:37:03,750 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:37:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:04,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:05,122 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:05,122 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:37:05,583 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:05,583 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:05,591 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:05,591 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:05,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:05,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048812033] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:05,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:05,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:05,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633652814] [2022-01-18 15:37:05,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:05,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:05,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:05,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:05,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:05,715 INFO L87 Difference]: Start difference. First operand 405 states and 1193 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:06,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:06,843 INFO L93 Difference]: Finished difference Result 612 states and 1743 transitions. [2022-01-18 15:37:06,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:37:06,844 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:06,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:06,852 INFO L225 Difference]: With dead ends: 612 [2022-01-18 15:37:06,852 INFO L226 Difference]: Without dead ends: 571 [2022-01-18 15:37:06,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=186, Invalid=1374, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:37:06,852 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 92 mSDsluCounter, 781 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 174 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:06,852 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 575 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 515 Invalid, 0 Unknown, 174 Unchecked, 0.2s Time] [2022-01-18 15:37:06,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-01-18 15:37:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 407. [2022-01-18 15:37:06,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 406 states have (on average 2.9532019704433496) internal successors, (1199), 406 states have internal predecessors, (1199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:06,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 1199 transitions. [2022-01-18 15:37:06,858 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 1199 transitions. Word has length 20 [2022-01-18 15:37:06,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:06,858 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 1199 transitions. [2022-01-18 15:37:06,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:06,858 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 1199 transitions. [2022-01-18 15:37:06,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:06,858 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:06,858 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:06,873 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (76)] Ended with exit code 0 [2022-01-18 15:37:07,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 76 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable196 [2022-01-18 15:37:07,059 INFO L402 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:07,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1417048653, now seen corresponding path program 46 times [2022-01-18 15:37:07,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:07,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451446209] [2022-01-18 15:37:07,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:07,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:07,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:07,280 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:07,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:07,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451446209] [2022-01-18 15:37:07,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451446209] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:07,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1669281533] [2022-01-18 15:37:07,280 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:37:07,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:07,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:07,281 INFO L229 MonitoredProcess]: Starting monitored process 77 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:07,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Waiting until timeout for monitored process [2022-01-18 15:37:07,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:37:07,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:07,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:37:07,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:07,783 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:07,784 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-01-18 15:37:09,220 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:09,221 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:37:09,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 120 [2022-01-18 15:37:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:09,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:09,988 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:09,988 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-01-18 15:37:10,288 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:10,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:37:10,295 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:10,295 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:37:10,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:10,444 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1669281533] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:10,444 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:10,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:10,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578436545] [2022-01-18 15:37:10,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:10,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:10,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:10,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:10,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:10,445 INFO L87 Difference]: Start difference. First operand 407 states and 1199 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:11,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:11,391 INFO L93 Difference]: Finished difference Result 617 states and 1806 transitions. [2022-01-18 15:37:11,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:37:11,392 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:11,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:11,393 INFO L225 Difference]: With dead ends: 617 [2022-01-18 15:37:11,393 INFO L226 Difference]: Without dead ends: 610 [2022-01-18 15:37:11,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 181 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=170, Invalid=1390, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:37:11,393 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 148 mSDsluCounter, 683 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 378 SdHoareTripleChecker+Invalid, 939 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 626 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:11,393 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 378 Invalid, 939 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 310 Invalid, 0 Unknown, 626 Unchecked, 0.1s Time] [2022-01-18 15:37:11,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 610 states. [2022-01-18 15:37:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 610 to 413. [2022-01-18 15:37:11,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 413 states, 412 states have (on average 2.953883495145631) internal successors, (1217), 412 states have internal predecessors, (1217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 1217 transitions. [2022-01-18 15:37:11,398 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 1217 transitions. Word has length 20 [2022-01-18 15:37:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:11,398 INFO L470 AbstractCegarLoop]: Abstraction has 413 states and 1217 transitions. [2022-01-18 15:37:11,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 1217 transitions. [2022-01-18 15:37:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:11,399 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:11,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:11,414 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (77)] Ended with exit code 0 [2022-01-18 15:37:11,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197,77 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:11,600 INFO L402 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:11,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:11,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1163554225, now seen corresponding path program 47 times [2022-01-18 15:37:11,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:11,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145743492] [2022-01-18 15:37:11,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:11,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:11,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:11,787 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:11,787 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:11,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145743492] [2022-01-18 15:37:11,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145743492] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:11,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1855158133] [2022-01-18 15:37:11,788 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:37:11,788 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:11,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:11,789 INFO L229 MonitoredProcess]: Starting monitored process 78 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:11,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Waiting until timeout for monitored process [2022-01-18 15:37:11,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:37:11,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:11,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 15:37:11,814 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:12,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-01-18 15:37:12,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 129 [2022-01-18 15:37:12,515 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 107 [2022-01-18 15:37:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:12,848 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:13,206 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:13,206 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 106 [2022-01-18 15:37:13,497 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:37:13,498 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 88 [2022-01-18 15:37:13,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 67 [2022-01-18 15:37:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:13,506 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1855158133] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:13,506 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:13,506 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:37:13,506 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218235164] [2022-01-18 15:37:13,506 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:13,507 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:37:13,507 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:37:13,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:37:13,507 INFO L87 Difference]: Start difference. First operand 413 states and 1217 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:15,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:15,773 INFO L93 Difference]: Finished difference Result 633 states and 1803 transitions. [2022-01-18 15:37:15,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:37:15,774 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:15,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:15,775 INFO L225 Difference]: With dead ends: 633 [2022-01-18 15:37:15,775 INFO L226 Difference]: Without dead ends: 618 [2022-01-18 15:37:15,775 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=201, Invalid=1059, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:37:15,775 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 224 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 258 SdHoareTripleChecker+Invalid, 811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:15,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [224 Valid, 258 Invalid, 811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:37:15,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-01-18 15:37:15,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 414. [2022-01-18 15:37:15,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 414 states, 413 states have (on average 2.953995157384988) internal successors, (1220), 413 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:15,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 414 states to 414 states and 1220 transitions. [2022-01-18 15:37:15,780 INFO L78 Accepts]: Start accepts. Automaton has 414 states and 1220 transitions. Word has length 20 [2022-01-18 15:37:15,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:15,780 INFO L470 AbstractCegarLoop]: Abstraction has 414 states and 1220 transitions. [2022-01-18 15:37:15,780 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:15,780 INFO L276 IsEmpty]: Start isEmpty. Operand 414 states and 1220 transitions. [2022-01-18 15:37:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:15,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:15,781 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:15,796 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (78)] Ended with exit code 0 [2022-01-18 15:37:15,981 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198,78 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:15,981 INFO L402 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:15,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:15,982 INFO L85 PathProgramCache]: Analyzing trace with hash 241611533, now seen corresponding path program 48 times [2022-01-18 15:37:15,982 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:15,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024959750] [2022-01-18 15:37:15,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:15,982 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:16,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024959750] [2022-01-18 15:37:16,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024959750] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:16,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713571013] [2022-01-18 15:37:16,304 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:37:16,304 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:16,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:16,305 INFO L229 MonitoredProcess]: Starting monitored process 79 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:16,306 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Waiting until timeout for monitored process [2022-01-18 15:37:16,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:37:16,339 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:16,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:16,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:16,968 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:16,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-01-18 15:37:18,377 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:18,378 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 148 [2022-01-18 15:37:18,380 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 148 treesize of output 126 [2022-01-18 15:37:19,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:19,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:19,472 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:19,472 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-01-18 15:37:19,794 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:19,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:19,801 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:19,802 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:19,937 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:19,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713571013] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:19,937 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:19,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:19,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506599892] [2022-01-18 15:37:19,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:19,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:19,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:19,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:19,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:19,938 INFO L87 Difference]: Start difference. First operand 414 states and 1220 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:20,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:20,698 INFO L93 Difference]: Finished difference Result 580 states and 1732 transitions. [2022-01-18 15:37:20,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:37:20,698 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:20,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:20,699 INFO L225 Difference]: With dead ends: 580 [2022-01-18 15:37:20,699 INFO L226 Difference]: Without dead ends: 573 [2022-01-18 15:37:20,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:37:20,700 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 99 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 301 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:20,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 284 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 387 Invalid, 0 Unknown, 301 Unchecked, 0.2s Time] [2022-01-18 15:37:20,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2022-01-18 15:37:20,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 416. [2022-01-18 15:37:20,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 416 states, 415 states have (on average 2.9542168674698797) internal successors, (1226), 415 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 416 states to 416 states and 1226 transitions. [2022-01-18 15:37:20,705 INFO L78 Accepts]: Start accepts. Automaton has 416 states and 1226 transitions. Word has length 20 [2022-01-18 15:37:20,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:20,705 INFO L470 AbstractCegarLoop]: Abstraction has 416 states and 1226 transitions. [2022-01-18 15:37:20,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:20,705 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states and 1226 transitions. [2022-01-18 15:37:20,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:20,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:20,706 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:20,721 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (79)] Ended with exit code 0 [2022-01-18 15:37:20,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199,79 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:20,906 INFO L402 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:20,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:20,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1752853623, now seen corresponding path program 49 times [2022-01-18 15:37:20,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:20,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271956695] [2022-01-18 15:37:20,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:20,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:20,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:21,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271956695] [2022-01-18 15:37:21,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271956695] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:21,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124939127] [2022-01-18 15:37:21,164 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:37:21,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:21,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:21,165 INFO L229 MonitoredProcess]: Starting monitored process 80 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:21,166 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Waiting until timeout for monitored process [2022-01-18 15:37:21,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:21,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:37:21,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:21,611 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:21,612 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2022-01-18 15:37:22,645 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:22,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 162 [2022-01-18 15:37:22,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 138 [2022-01-18 15:37:23,585 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:23,586 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:24,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:24,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 15:37:24,390 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:24,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:37:24,397 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:24,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:37:24,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:24,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124939127] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:24,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:24,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:24,545 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102291942] [2022-01-18 15:37:24,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:24,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:24,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:24,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:24,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:24,546 INFO L87 Difference]: Start difference. First operand 416 states and 1226 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:25,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:25,565 INFO L93 Difference]: Finished difference Result 813 states and 2377 transitions. [2022-01-18 15:37:25,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:37:25,565 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:25,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:25,566 INFO L225 Difference]: With dead ends: 813 [2022-01-18 15:37:25,566 INFO L226 Difference]: Without dead ends: 781 [2022-01-18 15:37:25,566 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=148, Invalid=1258, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:37:25,567 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 130 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 261 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:25,567 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 531 Invalid, 902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 617 Invalid, 0 Unknown, 261 Unchecked, 0.3s Time] [2022-01-18 15:37:25,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2022-01-18 15:37:25,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 428. [2022-01-18 15:37:25,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 428 states, 427 states have (on average 2.9648711943793913) internal successors, (1266), 427 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:25,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 428 states to 428 states and 1266 transitions. [2022-01-18 15:37:25,572 INFO L78 Accepts]: Start accepts. Automaton has 428 states and 1266 transitions. Word has length 20 [2022-01-18 15:37:25,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:25,572 INFO L470 AbstractCegarLoop]: Abstraction has 428 states and 1266 transitions. [2022-01-18 15:37:25,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:25,573 INFO L276 IsEmpty]: Start isEmpty. Operand 428 states and 1266 transitions. [2022-01-18 15:37:25,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:25,573 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:25,573 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:25,588 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (80)] Ended with exit code 0 [2022-01-18 15:37:25,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 80 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable200 [2022-01-18 15:37:25,774 INFO L402 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:25,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1974302859, now seen corresponding path program 50 times [2022-01-18 15:37:25,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:25,774 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331314041] [2022-01-18 15:37:25,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:25,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:25,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:26,041 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:26,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:26,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331314041] [2022-01-18 15:37:26,042 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331314041] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:26,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [677696040] [2022-01-18 15:37:26,042 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:37:26,042 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:26,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:26,043 INFO L229 MonitoredProcess]: Starting monitored process 81 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:26,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Waiting until timeout for monitored process [2022-01-18 15:37:26,076 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:37:26,076 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:26,076 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:26,077 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:26,647 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:26,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-01-18 15:37:27,868 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:27,870 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2022-01-18 15:37:27,872 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 118 [2022-01-18 15:37:28,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:28,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:28,770 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:28,770 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-01-18 15:37:29,061 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:29,061 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:29,068 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:29,068 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:29,183 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:29,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [677696040] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:29,183 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:29,183 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:29,183 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293286529] [2022-01-18 15:37:29,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:29,183 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:29,183 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:29,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:29,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:29,184 INFO L87 Difference]: Start difference. First operand 428 states and 1266 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:29,963 INFO L93 Difference]: Finished difference Result 628 states and 1887 transitions. [2022-01-18 15:37:29,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:37:29,963 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:29,964 INFO L225 Difference]: With dead ends: 628 [2022-01-18 15:37:29,964 INFO L226 Difference]: Without dead ends: 621 [2022-01-18 15:37:29,964 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:37:29,964 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 77 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:29,964 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 286 Invalid, 537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 415 Invalid, 0 Unknown, 119 Unchecked, 0.2s Time] [2022-01-18 15:37:29,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2022-01-18 15:37:29,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 434. [2022-01-18 15:37:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.9653579676674364) internal successors, (1284), 433 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1284 transitions. [2022-01-18 15:37:29,969 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1284 transitions. Word has length 20 [2022-01-18 15:37:29,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:29,969 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1284 transitions. [2022-01-18 15:37:29,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1284 transitions. [2022-01-18 15:37:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:29,970 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:29,970 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:29,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (81)] Forceful destruction successful, exit code 0 [2022-01-18 15:37:30,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable201 [2022-01-18 15:37:30,171 INFO L402 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:30,171 INFO L85 PathProgramCache]: Analyzing trace with hash 300557603, now seen corresponding path program 51 times [2022-01-18 15:37:30,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:30,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529548562] [2022-01-18 15:37:30,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:30,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:30,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:30,431 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:30,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529548562] [2022-01-18 15:37:30,431 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529548562] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:30,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094583177] [2022-01-18 15:37:30,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:37:30,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:30,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:30,432 INFO L229 MonitoredProcess]: Starting monitored process 82 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:30,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Waiting until timeout for monitored process [2022-01-18 15:37:30,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:37:30,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:30,457 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:30,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:31,022 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:31,023 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-01-18 15:37:32,061 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:32,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 156 [2022-01-18 15:37:32,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 136 [2022-01-18 15:37:32,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:32,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:33,222 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:33,223 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 101 [2022-01-18 15:37:33,505 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:33,505 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:33,512 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:33,512 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:33,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1094583177] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:33,636 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:33,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:33,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67827221] [2022-01-18 15:37:33,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:33,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:33,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:33,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:33,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:33,637 INFO L87 Difference]: Start difference. First operand 434 states and 1284 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:34,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:34,374 INFO L93 Difference]: Finished difference Result 583 states and 1731 transitions. [2022-01-18 15:37:34,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:37:34,375 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:34,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:34,376 INFO L225 Difference]: With dead ends: 583 [2022-01-18 15:37:34,376 INFO L226 Difference]: Without dead ends: 576 [2022-01-18 15:37:34,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=1061, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:37:34,377 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 73 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 334 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 73 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:34,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 285 Invalid, 410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 334 Invalid, 0 Unknown, 73 Unchecked, 0.1s Time] [2022-01-18 15:37:34,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2022-01-18 15:37:34,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 440. [2022-01-18 15:37:34,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 440 states, 439 states have (on average 2.9658314350797266) internal successors, (1302), 439 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:34,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 440 states to 440 states and 1302 transitions. [2022-01-18 15:37:34,382 INFO L78 Accepts]: Start accepts. Automaton has 440 states and 1302 transitions. Word has length 20 [2022-01-18 15:37:34,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:34,382 INFO L470 AbstractCegarLoop]: Abstraction has 440 states and 1302 transitions. [2022-01-18 15:37:34,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:34,382 INFO L276 IsEmpty]: Start isEmpty. Operand 440 states and 1302 transitions. [2022-01-18 15:37:34,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:34,383 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:34,383 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:34,397 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (82)] Ended with exit code 0 [2022-01-18 15:37:34,583 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable202 [2022-01-18 15:37:34,583 INFO L402 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:34,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:34,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2020090601, now seen corresponding path program 52 times [2022-01-18 15:37:34,584 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:34,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541986848] [2022-01-18 15:37:34,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:34,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:34,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:34,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:34,879 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:34,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541986848] [2022-01-18 15:37:34,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541986848] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:34,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88634590] [2022-01-18 15:37:34,879 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:37:34,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:34,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:34,880 INFO L229 MonitoredProcess]: Starting monitored process 83 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:34,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Waiting until timeout for monitored process [2022-01-18 15:37:34,904 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:37:34,904 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:34,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:37:34,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:35,390 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:35,391 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 97 treesize of output 83 [2022-01-18 15:37:36,242 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:36,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-01-18 15:37:36,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:37:36,713 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:36,713 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:37,071 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:37,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-01-18 15:37:37,385 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:37,386 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:37:37,391 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:37,395 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:37:37,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:37,545 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88634590] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:37,545 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:37,545 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:37,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758524835] [2022-01-18 15:37:37,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:37,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:37,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:37,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:37,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:37,546 INFO L87 Difference]: Start difference. First operand 440 states and 1302 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:38,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:38,623 INFO L93 Difference]: Finished difference Result 713 states and 2117 transitions. [2022-01-18 15:37:38,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:37:38,623 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:38,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:38,624 INFO L225 Difference]: With dead ends: 713 [2022-01-18 15:37:38,624 INFO L226 Difference]: Without dead ends: 683 [2022-01-18 15:37:38,625 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=165, Invalid=1475, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:37:38,625 INFO L933 BasicCegarLoop]: 36 mSDtfsCounter, 106 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 397 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:38,625 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 589 Invalid, 972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 564 Invalid, 0 Unknown, 397 Unchecked, 0.2s Time] [2022-01-18 15:37:38,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-01-18 15:37:38,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 446. [2022-01-18 15:37:38,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 2.966292134831461) internal successors, (1320), 445 states have internal predecessors, (1320), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:38,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1320 transitions. [2022-01-18 15:37:38,630 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1320 transitions. Word has length 20 [2022-01-18 15:37:38,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:38,630 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1320 transitions. [2022-01-18 15:37:38,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:38,630 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1320 transitions. [2022-01-18 15:37:38,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:38,631 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:38,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:38,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (83)] Forceful destruction successful, exit code 0 [2022-01-18 15:37:38,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 83 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable203 [2022-01-18 15:37:38,831 INFO L402 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:38,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:38,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1521624433, now seen corresponding path program 53 times [2022-01-18 15:37:38,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:38,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508753996] [2022-01-18 15:37:38,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:38,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:38,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:39,144 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:39,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508753996] [2022-01-18 15:37:39,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508753996] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:39,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348057180] [2022-01-18 15:37:39,145 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:37:39,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:39,145 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:39,146 INFO L229 MonitoredProcess]: Starting monitored process 84 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:39,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Waiting until timeout for monitored process [2022-01-18 15:37:39,170 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:37:39,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:39,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 15:37:39,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:39,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-01-18 15:37:40,056 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 132 [2022-01-18 15:37:40,057 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 110 [2022-01-18 15:37:40,431 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:40,432 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:40,868 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:40,868 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 121 treesize of output 111 [2022-01-18 15:37:41,224 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:37:41,224 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 99 [2022-01-18 15:37:41,226 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 78 [2022-01-18 15:37:41,232 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:41,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348057180] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:41,232 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:41,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:37:41,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538849127] [2022-01-18 15:37:41,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:41,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:37:41,233 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:41,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:37:41,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:37:41,233 INFO L87 Difference]: Start difference. First operand 446 states and 1320 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:43,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:43,667 INFO L93 Difference]: Finished difference Result 662 states and 1896 transitions. [2022-01-18 15:37:43,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:37:43,667 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:43,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:43,668 INFO L225 Difference]: With dead ends: 662 [2022-01-18 15:37:43,668 INFO L226 Difference]: Without dead ends: 655 [2022-01-18 15:37:43,668 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=193, Invalid=1067, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:37:43,669 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 179 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 274 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:43,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [179 Valid, 274 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 15:37:43,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-01-18 15:37:43,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 427. [2022-01-18 15:37:43,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 427 states, 426 states have (on average 2.9694835680751175) internal successors, (1265), 426 states have internal predecessors, (1265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:43,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 1265 transitions. [2022-01-18 15:37:43,674 INFO L78 Accepts]: Start accepts. Automaton has 427 states and 1265 transitions. Word has length 20 [2022-01-18 15:37:43,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:43,675 INFO L470 AbstractCegarLoop]: Abstraction has 427 states and 1265 transitions. [2022-01-18 15:37:43,675 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:43,675 INFO L276 IsEmpty]: Start isEmpty. Operand 427 states and 1265 transitions. [2022-01-18 15:37:43,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:43,675 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:43,675 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:43,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (84)] Ended with exit code 0 [2022-01-18 15:37:43,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204,84 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:43,876 INFO L402 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:43,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 778877707, now seen corresponding path program 54 times [2022-01-18 15:37:43,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:43,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685290940] [2022-01-18 15:37:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:43,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:44,156 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:44,157 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:44,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685290940] [2022-01-18 15:37:44,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685290940] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:44,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657359006] [2022-01-18 15:37:44,157 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:37:44,157 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:44,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:44,159 INFO L229 MonitoredProcess]: Starting monitored process 85 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:44,159 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Waiting until timeout for monitored process [2022-01-18 15:37:44,183 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:37:44,183 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:44,184 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:44,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:44,767 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:44,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 90 [2022-01-18 15:37:45,688 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:45,689 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 160 [2022-01-18 15:37:45,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:37:46,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:46,850 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:47,220 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:47,220 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-01-18 15:37:47,579 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:47,579 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:47,586 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:47,586 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:47,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657359006] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:47,708 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:47,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:47,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590669707] [2022-01-18 15:37:47,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:47,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:47,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:47,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:47,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:47,709 INFO L87 Difference]: Start difference. First operand 427 states and 1265 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:48,763 INFO L93 Difference]: Finished difference Result 637 states and 1854 transitions. [2022-01-18 15:37:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:37:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:48,764 INFO L225 Difference]: With dead ends: 637 [2022-01-18 15:37:48,764 INFO L226 Difference]: Without dead ends: 623 [2022-01-18 15:37:48,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=155, Invalid=1177, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:37:48,764 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 127 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 510 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 212 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:48,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 347 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 510 Invalid, 0 Unknown, 212 Unchecked, 0.2s Time] [2022-01-18 15:37:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 623 states. [2022-01-18 15:37:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 623 to 434. [2022-01-18 15:37:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 2.979214780600462) internal successors, (1290), 433 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1290 transitions. [2022-01-18 15:37:48,770 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1290 transitions. Word has length 20 [2022-01-18 15:37:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:48,770 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1290 transitions. [2022-01-18 15:37:48,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:48,770 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1290 transitions. [2022-01-18 15:37:48,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:48,771 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:48,771 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:48,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (85)] Forceful destruction successful, exit code 0 [2022-01-18 15:37:48,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205,85 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:48,971 INFO L402 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:48,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:48,971 INFO L85 PathProgramCache]: Analyzing trace with hash 801474255, now seen corresponding path program 55 times [2022-01-18 15:37:48,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:48,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284142548] [2022-01-18 15:37:48,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:48,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:49,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:49,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284142548] [2022-01-18 15:37:49,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284142548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:49,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477900704] [2022-01-18 15:37:49,206 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:37:49,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:49,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:49,208 INFO L229 MonitoredProcess]: Starting monitored process 86 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:49,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Waiting until timeout for monitored process [2022-01-18 15:37:49,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:37:49,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:49,612 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:49,613 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 15:37:50,413 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:50,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 143 [2022-01-18 15:37:50,416 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 119 [2022-01-18 15:37:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:51,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:51,503 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:51,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:37:51,935 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:51,935 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:37:51,941 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:51,941 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:37:52,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:52,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1477900704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:52,117 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:52,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:52,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194315010] [2022-01-18 15:37:52,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:52,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:52,117 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:52,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:52,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:52,118 INFO L87 Difference]: Start difference. First operand 434 states and 1290 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:53,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:53,198 INFO L93 Difference]: Finished difference Result 691 states and 1956 transitions. [2022-01-18 15:37:53,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:37:53,198 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:53,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:53,200 INFO L225 Difference]: With dead ends: 691 [2022-01-18 15:37:53,200 INFO L226 Difference]: Without dead ends: 663 [2022-01-18 15:37:53,200 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=191, Invalid=1291, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:37:53,200 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 117 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 130 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:53,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 314 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 428 Invalid, 0 Unknown, 130 Unchecked, 0.2s Time] [2022-01-18 15:37:53,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2022-01-18 15:37:53,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 443. [2022-01-18 15:37:53,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 442 states have (on average 3.006787330316742) internal successors, (1329), 442 states have internal predecessors, (1329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:53,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 1329 transitions. [2022-01-18 15:37:53,207 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 1329 transitions. Word has length 20 [2022-01-18 15:37:53,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:53,207 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 1329 transitions. [2022-01-18 15:37:53,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:53,207 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 1329 transitions. [2022-01-18 15:37:53,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:53,208 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:53,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:53,223 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (86)] Ended with exit code 0 [2022-01-18 15:37:53,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable206 [2022-01-18 15:37:53,408 INFO L402 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:53,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:53,409 INFO L85 PathProgramCache]: Analyzing trace with hash -1398320089, now seen corresponding path program 56 times [2022-01-18 15:37:53,409 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:53,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529361279] [2022-01-18 15:37:53,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:53,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:53,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:53,652 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:53,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529361279] [2022-01-18 15:37:53,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529361279] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:53,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732783711] [2022-01-18 15:37:53,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:37:53,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:53,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:53,653 INFO L229 MonitoredProcess]: Starting monitored process 87 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:53,654 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Waiting until timeout for monitored process [2022-01-18 15:37:53,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:37:53,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:53,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:53,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:54,195 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:54,196 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-01-18 15:37:54,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:54,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 193 treesize of output 171 [2022-01-18 15:37:54,878 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 149 [2022-01-18 15:37:55,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:55,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:37:56,353 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:56,353 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 93 [2022-01-18 15:37:56,645 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:56,646 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:37:56,652 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:37:56,652 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:37:56,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:56,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1732783711] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:37:56,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:37:56,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:37:56,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857074628] [2022-01-18 15:37:56,759 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:37:56,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:37:56,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:37:56,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:37:56,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:37:56,759 INFO L87 Difference]: Start difference. First operand 443 states and 1329 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:58,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:37:58,306 INFO L93 Difference]: Finished difference Result 640 states and 1871 transitions. [2022-01-18 15:37:58,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:37:58,306 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:37:58,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:37:58,308 INFO L225 Difference]: With dead ends: 640 [2022-01-18 15:37:58,308 INFO L226 Difference]: Without dead ends: 626 [2022-01-18 15:37:58,308 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=203, Invalid=1519, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:37:58,308 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 104 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 440 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 122 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:37:58,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [104 Valid, 376 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 440 Invalid, 0 Unknown, 122 Unchecked, 0.2s Time] [2022-01-18 15:37:58,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2022-01-18 15:37:58,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 445. [2022-01-18 15:37:58,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 444 states have (on average 3.015765765765766) internal successors, (1339), 444 states have internal predecessors, (1339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:58,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 1339 transitions. [2022-01-18 15:37:58,313 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 1339 transitions. Word has length 20 [2022-01-18 15:37:58,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:37:58,313 INFO L470 AbstractCegarLoop]: Abstraction has 445 states and 1339 transitions. [2022-01-18 15:37:58,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:37:58,314 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 1339 transitions. [2022-01-18 15:37:58,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:37:58,314 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:37:58,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:37:58,329 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (87)] Forceful destruction successful, exit code 0 [2022-01-18 15:37:58,514 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207,87 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:58,515 INFO L402 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:37:58,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:37:58,515 INFO L85 PathProgramCache]: Analyzing trace with hash 321212909, now seen corresponding path program 57 times [2022-01-18 15:37:58,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:37:58,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120096779] [2022-01-18 15:37:58,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:37:58,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:37:58,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:37:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:37:58,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:37:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120096779] [2022-01-18 15:37:58,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120096779] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:37:58,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [318621705] [2022-01-18 15:37:58,775 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:37:58,775 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:37:58,775 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:37:58,776 INFO L229 MonitoredProcess]: Starting monitored process 88 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:37:58,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Waiting until timeout for monitored process [2022-01-18 15:37:58,800 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:37:58,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:37:58,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:37:58,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:37:59,373 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:37:59,374 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 90 [2022-01-18 15:38:00,017 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:00,018 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 157 [2022-01-18 15:38:00,021 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 137 [2022-01-18 15:38:01,027 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:01,027 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:01,397 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:01,397 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-01-18 15:38:01,690 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:01,690 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:01,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:01,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:01,847 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:01,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [318621705] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:01,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:01,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:01,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415125938] [2022-01-18 15:38:01,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:01,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:01,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:01,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:01,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:01,848 INFO L87 Difference]: Start difference. First operand 445 states and 1339 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:03,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:03,405 INFO L93 Difference]: Finished difference Result 889 states and 2693 transitions. [2022-01-18 15:38:03,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 15:38:03,405 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:03,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:03,407 INFO L225 Difference]: With dead ends: 889 [2022-01-18 15:38:03,407 INFO L226 Difference]: Without dead ends: 844 [2022-01-18 15:38:03,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 15:38:03,407 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 153 mSDsluCounter, 769 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 532 SdHoareTripleChecker+Invalid, 951 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 258 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:03,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 532 Invalid, 951 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 665 Invalid, 0 Unknown, 258 Unchecked, 0.3s Time] [2022-01-18 15:38:03,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 844 states. [2022-01-18 15:38:03,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 844 to 455. [2022-01-18 15:38:03,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 454 states have (on average 3.0330396475770924) internal successors, (1377), 454 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:03,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 1377 transitions. [2022-01-18 15:38:03,413 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 1377 transitions. Word has length 20 [2022-01-18 15:38:03,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:03,413 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 1377 transitions. [2022-01-18 15:38:03,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:03,413 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 1377 transitions. [2022-01-18 15:38:03,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:03,414 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:03,414 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:03,428 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (88)] Ended with exit code 0 [2022-01-18 15:38:03,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208,88 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:03,614 INFO L402 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1372544605, now seen corresponding path program 58 times [2022-01-18 15:38:03,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:03,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552996572] [2022-01-18 15:38:03,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:03,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:03,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:03,857 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:03,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:03,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552996572] [2022-01-18 15:38:03,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552996572] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:03,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745444643] [2022-01-18 15:38:03,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:38:03,858 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:03,858 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:03,859 INFO L229 MonitoredProcess]: Starting monitored process 89 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:03,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Waiting until timeout for monitored process [2022-01-18 15:38:03,882 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:38:03,883 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:03,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:38:03,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:04,285 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:04,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2022-01-18 15:38:05,063 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:05,064 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 159 [2022-01-18 15:38:05,067 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 133 [2022-01-18 15:38:05,991 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:05,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:06,496 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:06,496 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:38:06,795 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:06,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:38:06,802 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:06,803 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:38:06,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:06,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745444643] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:06,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:06,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:06,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767345599] [2022-01-18 15:38:06,947 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:06,947 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:06,947 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:06,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:06,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:06,948 INFO L87 Difference]: Start difference. First operand 455 states and 1377 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:08,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:08,986 INFO L93 Difference]: Finished difference Result 885 states and 2579 transitions. [2022-01-18 15:38:08,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 15:38:08,986 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:08,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:08,988 INFO L225 Difference]: With dead ends: 885 [2022-01-18 15:38:08,988 INFO L226 Difference]: Without dead ends: 853 [2022-01-18 15:38:08,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 24 SyntacticMatches, 6 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=228, Invalid=1752, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 15:38:08,989 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 165 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 481 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 481 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 328 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:08,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 542 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 481 Invalid, 0 Unknown, 328 Unchecked, 0.3s Time] [2022-01-18 15:38:08,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-01-18 15:38:08,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 462. [2022-01-18 15:38:08,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 461 states have (on average 3.0477223427331888) internal successors, (1405), 461 states have internal predecessors, (1405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:08,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 1405 transitions. [2022-01-18 15:38:08,996 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 1405 transitions. Word has length 20 [2022-01-18 15:38:08,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:08,996 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 1405 transitions. [2022-01-18 15:38:08,996 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:08,996 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 1405 transitions. [2022-01-18 15:38:08,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:08,996 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:08,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:09,011 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (89)] Ended with exit code 0 [2022-01-18 15:38:09,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable209 [2022-01-18 15:38:09,197 INFO L402 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:09,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:09,197 INFO L85 PathProgramCache]: Analyzing trace with hash 1021705897, now seen corresponding path program 59 times [2022-01-18 15:38:09,197 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:09,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177034818] [2022-01-18 15:38:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:09,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:09,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:09,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:09,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:09,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177034818] [2022-01-18 15:38:09,419 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177034818] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:09,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1913199354] [2022-01-18 15:38:09,419 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:38:09,419 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:09,420 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:09,420 INFO L229 MonitoredProcess]: Starting monitored process 90 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:09,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Waiting until timeout for monitored process [2022-01-18 15:38:09,445 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 15:38:09,445 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:09,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:09,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:09,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 79 [2022-01-18 15:38:10,047 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 142 [2022-01-18 15:38:10,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 124 [2022-01-18 15:38:10,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:10,784 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:11,202 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:11,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 124 treesize of output 116 [2022-01-18 15:38:11,500 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:38:11,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 95 [2022-01-18 15:38:11,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 74 [2022-01-18 15:38:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:11,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1913199354] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:11,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:11,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:38:11,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159988369] [2022-01-18 15:38:11,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:11,546 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:38:11,546 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:38:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=683, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:38:11,547 INFO L87 Difference]: Start difference. First operand 462 states and 1405 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:16,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:16,313 INFO L93 Difference]: Finished difference Result 893 states and 2505 transitions. [2022-01-18 15:38:16,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 15:38:16,314 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:16,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:16,315 INFO L225 Difference]: With dead ends: 893 [2022-01-18 15:38:16,315 INFO L226 Difference]: Without dead ends: 820 [2022-01-18 15:38:16,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.8s TimeCoverageRelationStatistics Valid=357, Invalid=1535, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 15:38:16,315 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 320 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:16,315 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [320 Valid, 430 Invalid, 1295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 15:38:16,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-01-18 15:38:16,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 434. [2022-01-18 15:38:16,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.0069284064665127) internal successors, (1302), 433 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:16,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1302 transitions. [2022-01-18 15:38:16,321 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1302 transitions. Word has length 20 [2022-01-18 15:38:16,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:16,322 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1302 transitions. [2022-01-18 15:38:16,322 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:16,322 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1302 transitions. [2022-01-18 15:38:16,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:16,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:16,322 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:16,338 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (90)] Forceful destruction successful, exit code 0 [2022-01-18 15:38:16,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable210 [2022-01-18 15:38:16,523 INFO L402 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:16,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:16,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1083145359, now seen corresponding path program 60 times [2022-01-18 15:38:16,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:16,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666471114] [2022-01-18 15:38:16,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:16,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:16,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:16,752 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:16,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:16,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666471114] [2022-01-18 15:38:16,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666471114] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:16,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [82524349] [2022-01-18 15:38:16,753 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:38:16,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:16,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:16,756 INFO L229 MonitoredProcess]: Starting monitored process 91 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:16,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Waiting until timeout for monitored process [2022-01-18 15:38:16,795 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:38:16,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:16,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:16,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:17,559 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:17,560 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 104 [2022-01-18 15:38:18,499 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:18,500 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 143 [2022-01-18 15:38:18,502 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 123 [2022-01-18 15:38:19,051 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:19,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:19,365 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:19,365 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:38:19,710 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:19,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:19,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:19,717 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:19,850 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:19,850 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [82524349] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:19,850 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:19,850 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:19,851 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194404567] [2022-01-18 15:38:19,851 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:19,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:19,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:19,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:19,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:19,851 INFO L87 Difference]: Start difference. First operand 434 states and 1302 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:20,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:20,569 INFO L93 Difference]: Finished difference Result 597 states and 1760 transitions. [2022-01-18 15:38:20,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:38:20,569 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:20,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:20,570 INFO L225 Difference]: With dead ends: 597 [2022-01-18 15:38:20,570 INFO L226 Difference]: Without dead ends: 577 [2022-01-18 15:38:20,570 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:38:20,570 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 66 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 408 SdHoareTripleChecker+Invalid, 600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 119 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:20,571 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 408 Invalid, 600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 469 Invalid, 0 Unknown, 119 Unchecked, 0.2s Time] [2022-01-18 15:38:20,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-18 15:38:20,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 436. [2022-01-18 15:38:20,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 436 states, 435 states have (on average 3.0022988505747126) internal successors, (1306), 435 states have internal predecessors, (1306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:20,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 436 states to 436 states and 1306 transitions. [2022-01-18 15:38:20,576 INFO L78 Accepts]: Start accepts. Automaton has 436 states and 1306 transitions. Word has length 20 [2022-01-18 15:38:20,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:20,576 INFO L470 AbstractCegarLoop]: Abstraction has 436 states and 1306 transitions. [2022-01-18 15:38:20,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:20,576 INFO L276 IsEmpty]: Start isEmpty. Operand 436 states and 1306 transitions. [2022-01-18 15:38:20,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:20,576 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:20,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:20,591 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (91)] Ended with exit code 0 [2022-01-18 15:38:20,777 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 91 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable211 [2022-01-18 15:38:20,777 INFO L402 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:20,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:20,777 INFO L85 PathProgramCache]: Analyzing trace with hash 1234850963, now seen corresponding path program 61 times [2022-01-18 15:38:20,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:20,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792428807] [2022-01-18 15:38:20,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:20,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:20,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:20,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:20,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:20,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792428807] [2022-01-18 15:38:20,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792428807] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:20,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98526980] [2022-01-18 15:38:20,994 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:38:20,994 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:20,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:20,995 INFO L229 MonitoredProcess]: Starting monitored process 92 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:20,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-01-18 15:38:21,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:21,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:21,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:21,725 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:21,726 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:38:22,233 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:22,233 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 196 treesize of output 172 [2022-01-18 15:38:22,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 172 treesize of output 148 [2022-01-18 15:38:23,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:23,314 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:23,607 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:23,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:38:23,959 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:23,959 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:23,967 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:23,967 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:24,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:24,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98526980] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:24,083 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:24,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:24,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996567799] [2022-01-18 15:38:24,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:24,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:24,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:24,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:24,084 INFO L87 Difference]: Start difference. First operand 436 states and 1306 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:25,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:25,086 INFO L93 Difference]: Finished difference Result 639 states and 1865 transitions. [2022-01-18 15:38:25,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:38:25,086 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:25,087 INFO L225 Difference]: With dead ends: 639 [2022-01-18 15:38:25,087 INFO L226 Difference]: Without dead ends: 625 [2022-01-18 15:38:25,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=1096, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:38:25,087 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 73 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:25,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 355 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 452 Invalid, 0 Unknown, 178 Unchecked, 0.2s Time] [2022-01-18 15:38:25,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-01-18 15:38:25,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 437. [2022-01-18 15:38:25,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 436 states have (on average 3.0022935779816513) internal successors, (1309), 436 states have internal predecessors, (1309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:25,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 1309 transitions. [2022-01-18 15:38:25,100 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 1309 transitions. Word has length 20 [2022-01-18 15:38:25,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:25,100 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 1309 transitions. [2022-01-18 15:38:25,101 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:25,101 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 1309 transitions. [2022-01-18 15:38:25,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:25,101 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:25,101 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:25,116 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Forceful destruction successful, exit code 0 [2022-01-18 15:38:25,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 92 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable212 [2022-01-18 15:38:25,302 INFO L402 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:25,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:25,303 INFO L85 PathProgramCache]: Analyzing trace with hash 1257447511, now seen corresponding path program 62 times [2022-01-18 15:38:25,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:25,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618865710] [2022-01-18 15:38:25,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:25,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:25,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:25,503 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:25,503 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:25,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618865710] [2022-01-18 15:38:25,503 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618865710] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:25,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841651615] [2022-01-18 15:38:25,503 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:38:25,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:25,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:25,504 INFO L229 MonitoredProcess]: Starting monitored process 93 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:25,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Waiting until timeout for monitored process [2022-01-18 15:38:25,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:38:25,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:25,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:25,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:26,229 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:26,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:38:26,897 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:26,898 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 160 [2022-01-18 15:38:26,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 138 [2022-01-18 15:38:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:27,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:28,135 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:28,136 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:38:28,479 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:28,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:28,486 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:28,486 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:28,639 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:28,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841651615] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:28,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:28,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:28,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996972613] [2022-01-18 15:38:28,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:28,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:28,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:28,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:28,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:28,640 INFO L87 Difference]: Start difference. First operand 437 states and 1309 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:29,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:29,808 INFO L93 Difference]: Finished difference Result 608 states and 1804 transitions. [2022-01-18 15:38:29,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:38:29,809 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:29,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:29,810 INFO L225 Difference]: With dead ends: 608 [2022-01-18 15:38:29,810 INFO L226 Difference]: Without dead ends: 588 [2022-01-18 15:38:29,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=153, Invalid=1179, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:38:29,810 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 69 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 124 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:29,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 487 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 466 Invalid, 0 Unknown, 124 Unchecked, 0.2s Time] [2022-01-18 15:38:29,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 588 states. [2022-01-18 15:38:29,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 588 to 434. [2022-01-18 15:38:29,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 433 states have (on average 3.0069284064665127) internal successors, (1302), 433 states have internal predecessors, (1302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:29,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 1302 transitions. [2022-01-18 15:38:29,815 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 1302 transitions. Word has length 20 [2022-01-18 15:38:29,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:29,815 INFO L470 AbstractCegarLoop]: Abstraction has 434 states and 1302 transitions. [2022-01-18 15:38:29,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:29,816 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 1302 transitions. [2022-01-18 15:38:29,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:29,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:29,816 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:29,831 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (93)] Ended with exit code 0 [2022-01-18 15:38:30,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213,93 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:30,017 INFO L402 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:30,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:30,017 INFO L85 PathProgramCache]: Analyzing trace with hash 1376966201, now seen corresponding path program 63 times [2022-01-18 15:38:30,017 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:30,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143844593] [2022-01-18 15:38:30,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:30,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:30,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:30,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:30,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143844593] [2022-01-18 15:38:30,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143844593] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:30,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956795396] [2022-01-18 15:38:30,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:38:30,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:30,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:30,208 INFO L229 MonitoredProcess]: Starting monitored process 94 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:30,209 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Waiting until timeout for monitored process [2022-01-18 15:38:30,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:38:30,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:30,238 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:30,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:30,912 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:30,912 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-01-18 15:38:31,905 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:31,907 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:38:31,909 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 120 [2022-01-18 15:38:32,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:32,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:32,744 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:32,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:38:33,118 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:33,118 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:33,125 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:33,125 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:33,238 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:33,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956795396] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:33,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:33,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:33,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249393126] [2022-01-18 15:38:33,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:33,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:33,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:33,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:33,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:33,239 INFO L87 Difference]: Start difference. First operand 434 states and 1302 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:34,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:34,122 INFO L93 Difference]: Finished difference Result 611 states and 1778 transitions. [2022-01-18 15:38:34,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:38:34,122 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:34,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:34,123 INFO L225 Difference]: With dead ends: 611 [2022-01-18 15:38:34,123 INFO L226 Difference]: Without dead ends: 582 [2022-01-18 15:38:34,124 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=155, Invalid=1251, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:38:34,124 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 85 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 527 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 837 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:34,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 519 Invalid, 837 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 527 Invalid, 0 Unknown, 294 Unchecked, 0.2s Time] [2022-01-18 15:38:34,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2022-01-18 15:38:34,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 454. [2022-01-18 15:38:34,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 453 states have (on average 3.0044150110375276) internal successors, (1361), 453 states have internal predecessors, (1361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:34,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 1361 transitions. [2022-01-18 15:38:34,129 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 1361 transitions. Word has length 20 [2022-01-18 15:38:34,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:34,129 INFO L470 AbstractCegarLoop]: Abstraction has 454 states and 1361 transitions. [2022-01-18 15:38:34,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:34,130 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 1361 transitions. [2022-01-18 15:38:34,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:34,130 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:34,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:34,146 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (94)] Ended with exit code 0 [2022-01-18 15:38:34,330 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214,94 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:34,331 INFO L402 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:34,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:34,331 INFO L85 PathProgramCache]: Analyzing trace with hash -296779055, now seen corresponding path program 64 times [2022-01-18 15:38:34,331 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727153809] [2022-01-18 15:38:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:34,331 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:34,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:34,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:34,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727153809] [2022-01-18 15:38:34,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727153809] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:34,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1305821131] [2022-01-18 15:38:34,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:38:34,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:34,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:34,523 INFO L229 MonitoredProcess]: Starting monitored process 95 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:34,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-01-18 15:38:34,548 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:38:34,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:34,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:38:34,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:35,156 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:35,157 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 105 [2022-01-18 15:38:35,950 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:35,950 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 155 [2022-01-18 15:38:35,953 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 135 [2022-01-18 15:38:36,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:36,453 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:36,785 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:36,785 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:38:37,287 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:37,288 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 118 [2022-01-18 15:38:37,296 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:37,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 98 [2022-01-18 15:38:37,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:37,437 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1305821131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:37,437 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:37,437 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:37,437 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553275783] [2022-01-18 15:38:37,437 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:37,437 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:37,437 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:37,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:37,438 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:37,438 INFO L87 Difference]: Start difference. First operand 454 states and 1361 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:38,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:38,099 INFO L93 Difference]: Finished difference Result 739 states and 2155 transitions. [2022-01-18 15:38:38,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:38:38,100 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:38,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:38,101 INFO L225 Difference]: With dead ends: 739 [2022-01-18 15:38:38,101 INFO L226 Difference]: Without dead ends: 659 [2022-01-18 15:38:38,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:38:38,101 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 86 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 396 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 578 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 396 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:38,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 449 Invalid, 578 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 396 Invalid, 0 Unknown, 166 Unchecked, 0.2s Time] [2022-01-18 15:38:38,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2022-01-18 15:38:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 468. [2022-01-18 15:38:38,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 468 states, 467 states have (on average 2.9957173447537473) internal successors, (1399), 467 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 468 states to 468 states and 1399 transitions. [2022-01-18 15:38:38,107 INFO L78 Accepts]: Start accepts. Automaton has 468 states and 1399 transitions. Word has length 20 [2022-01-18 15:38:38,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:38,107 INFO L470 AbstractCegarLoop]: Abstraction has 468 states and 1399 transitions. [2022-01-18 15:38:38,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:38,107 INFO L276 IsEmpty]: Start isEmpty. Operand 468 states and 1399 transitions. [2022-01-18 15:38:38,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:38,108 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:38,108 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:38,123 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Ended with exit code 0 [2022-01-18 15:38:38,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable215 [2022-01-18 15:38:38,308 INFO L402 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:38,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:38,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2118961091, now seen corresponding path program 65 times [2022-01-18 15:38:38,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:38,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149705688] [2022-01-18 15:38:38,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:38,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:38,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:38,498 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:38,499 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149705688] [2022-01-18 15:38:38,499 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149705688] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:38,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587800149] [2022-01-18 15:38:38,499 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:38:38,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:38,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:38,500 INFO L229 MonitoredProcess]: Starting monitored process 96 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:38,500 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Waiting until timeout for monitored process [2022-01-18 15:38:38,525 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:38:38,526 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:38,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:38:38,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:38,822 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 79 [2022-01-18 15:38:39,323 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 127 [2022-01-18 15:38:39,325 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 127 treesize of output 109 [2022-01-18 15:38:39,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:39,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:39,968 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:39,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:38:40,284 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:38:40,284 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:38:40,286 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:38:40,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:40,324 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1587800149] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:40,324 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:40,324 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:38:40,325 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314968425] [2022-01-18 15:38:40,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:40,325 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:38:40,325 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:40,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:38:40,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:38:40,325 INFO L87 Difference]: Start difference. First operand 468 states and 1399 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:43,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:43,067 INFO L93 Difference]: Finished difference Result 696 states and 2000 transitions. [2022-01-18 15:38:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:38:43,067 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:43,068 INFO L225 Difference]: With dead ends: 696 [2022-01-18 15:38:43,068 INFO L226 Difference]: Without dead ends: 615 [2022-01-18 15:38:43,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=247, Invalid=1313, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:38:43,069 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 180 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 180 SdHoareTripleChecker+Valid, 379 SdHoareTripleChecker+Invalid, 1155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:43,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [180 Valid, 379 Invalid, 1155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:38:43,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 615 states. [2022-01-18 15:38:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 615 to 429. [2022-01-18 15:38:43,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.0070093457943927) internal successors, (1287), 428 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:43,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1287 transitions. [2022-01-18 15:38:43,074 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1287 transitions. Word has length 20 [2022-01-18 15:38:43,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:43,074 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1287 transitions. [2022-01-18 15:38:43,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:43,074 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1287 transitions. [2022-01-18 15:38:43,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:43,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:43,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:43,091 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (96)] Ended with exit code 0 [2022-01-18 15:38:43,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable216 [2022-01-18 15:38:43,275 INFO L402 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:43,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:43,275 INFO L85 PathProgramCache]: Analyzing trace with hash -1885856431, now seen corresponding path program 66 times [2022-01-18 15:38:43,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:43,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686184026] [2022-01-18 15:38:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:43,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:43,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:43,489 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:43,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686184026] [2022-01-18 15:38:43,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686184026] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:43,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1390284352] [2022-01-18 15:38:43,490 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:38:43,490 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:43,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:43,491 INFO L229 MonitoredProcess]: Starting monitored process 97 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:43,491 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Waiting until timeout for monitored process [2022-01-18 15:38:43,517 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 15:38:43,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:43,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:43,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:44,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:44,303 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:38:44,833 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:44,834 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 198 treesize of output 176 [2022-01-18 15:38:44,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 154 [2022-01-18 15:38:45,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:45,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:46,251 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:46,252 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:38:46,581 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:46,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:46,588 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:46,588 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:46,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1390284352] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:46,729 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:46,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:46,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391106899] [2022-01-18 15:38:46,730 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:46,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:46,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:46,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:46,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:46,730 INFO L87 Difference]: Start difference. First operand 429 states and 1287 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:47,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:47,543 INFO L93 Difference]: Finished difference Result 630 states and 1843 transitions. [2022-01-18 15:38:47,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:38:47,544 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:47,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:47,545 INFO L225 Difference]: With dead ends: 630 [2022-01-18 15:38:47,545 INFO L226 Difference]: Without dead ends: 616 [2022-01-18 15:38:47,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=161, Invalid=1099, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:38:47,545 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 125 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 406 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 160 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:47,545 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 261 Invalid, 582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 406 Invalid, 0 Unknown, 160 Unchecked, 0.2s Time] [2022-01-18 15:38:47,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 616 states. [2022-01-18 15:38:47,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 616 to 435. [2022-01-18 15:38:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 434 states have (on average 3.0046082949308754) internal successors, (1304), 434 states have internal predecessors, (1304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:47,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 1304 transitions. [2022-01-18 15:38:47,551 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 1304 transitions. Word has length 20 [2022-01-18 15:38:47,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:47,551 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 1304 transitions. [2022-01-18 15:38:47,551 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:47,551 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 1304 transitions. [2022-01-18 15:38:47,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:47,551 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:47,551 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:47,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (97)] Ended with exit code 0 [2022-01-18 15:38:47,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 97 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable217 [2022-01-18 15:38:47,752 INFO L402 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:47,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:47,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1863259883, now seen corresponding path program 67 times [2022-01-18 15:38:47,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:47,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386463428] [2022-01-18 15:38:47,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:47,753 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:47,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:47,943 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:47,944 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:47,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386463428] [2022-01-18 15:38:47,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386463428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:47,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425149546] [2022-01-18 15:38:47,944 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:38:47,944 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:47,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:47,946 INFO L229 MonitoredProcess]: Starting monitored process 98 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:47,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-01-18 15:38:47,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:47,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:47,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:48,709 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:48,710 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:38:49,187 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:49,187 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 163 [2022-01-18 15:38:49,190 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 141 [2022-01-18 15:38:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:50,272 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:50,558 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:50,558 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:38:50,938 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:50,938 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:50,947 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:50,948 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:51,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:51,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425149546] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:51,061 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:51,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:51,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032611618] [2022-01-18 15:38:51,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:51,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:51,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:51,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:51,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:51,062 INFO L87 Difference]: Start difference. First operand 435 states and 1304 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:52,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:52,257 INFO L93 Difference]: Finished difference Result 625 states and 1836 transitions. [2022-01-18 15:38:52,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:38:52,257 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:52,258 INFO L225 Difference]: With dead ends: 625 [2022-01-18 15:38:52,258 INFO L226 Difference]: Without dead ends: 598 [2022-01-18 15:38:52,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=156, Invalid=1104, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:38:52,259 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 120 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 457 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 469 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:52,259 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 381 Invalid, 945 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 457 Invalid, 0 Unknown, 469 Unchecked, 0.2s Time] [2022-01-18 15:38:52,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 598 states. [2022-01-18 15:38:52,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 598 to 429. [2022-01-18 15:38:52,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.0070093457943927) internal successors, (1287), 428 states have internal predecessors, (1287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:52,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1287 transitions. [2022-01-18 15:38:52,264 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1287 transitions. Word has length 20 [2022-01-18 15:38:52,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:52,264 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1287 transitions. [2022-01-18 15:38:52,264 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:52,264 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1287 transitions. [2022-01-18 15:38:52,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:52,265 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:52,265 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:52,280 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Forceful destruction successful, exit code 0 [2022-01-18 15:38:52,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218,98 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:52,466 INFO L402 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:52,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:52,466 INFO L85 PathProgramCache]: Analyzing trace with hash 111127373, now seen corresponding path program 68 times [2022-01-18 15:38:52,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:52,466 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110445361] [2022-01-18 15:38:52,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:52,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:52,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110445361] [2022-01-18 15:38:52,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110445361] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:52,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1700792776] [2022-01-18 15:38:52,693 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:38:52,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:52,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:52,694 INFO L229 MonitoredProcess]: Starting monitored process 99 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:52,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Waiting until timeout for monitored process [2022-01-18 15:38:52,718 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:38:52,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:52,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:52,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:53,356 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:53,356 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:38:53,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:53,798 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 176 treesize of output 156 [2022-01-18 15:38:53,800 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 136 [2022-01-18 15:38:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:55,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:38:55,494 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:55,495 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:38:55,835 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:55,836 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:38:55,842 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:38:55,842 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:38:55,972 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:55,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1700792776] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:38:55,973 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:38:55,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:38:55,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689195] [2022-01-18 15:38:55,973 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:38:55,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:38:55,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:38:55,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:38:55,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:38:55,974 INFO L87 Difference]: Start difference. First operand 429 states and 1287 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:57,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:38:57,134 INFO L93 Difference]: Finished difference Result 703 states and 2056 transitions. [2022-01-18 15:38:57,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:38:57,134 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:38:57,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:38:57,135 INFO L225 Difference]: With dead ends: 703 [2022-01-18 15:38:57,135 INFO L226 Difference]: Without dead ends: 689 [2022-01-18 15:38:57,135 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=200, Invalid=1440, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:38:57,135 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 118 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 428 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 319 SdHoareTripleChecker+Invalid, 719 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 277 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:38:57,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 319 Invalid, 719 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 428 Invalid, 0 Unknown, 277 Unchecked, 0.2s Time] [2022-01-18 15:38:57,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-01-18 15:38:57,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 433. [2022-01-18 15:38:57,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 433 states, 432 states have (on average 3.0208333333333335) internal successors, (1305), 432 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:57,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 433 states to 433 states and 1305 transitions. [2022-01-18 15:38:57,141 INFO L78 Accepts]: Start accepts. Automaton has 433 states and 1305 transitions. Word has length 20 [2022-01-18 15:38:57,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:38:57,141 INFO L470 AbstractCegarLoop]: Abstraction has 433 states and 1305 transitions. [2022-01-18 15:38:57,141 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:38:57,141 INFO L276 IsEmpty]: Start isEmpty. Operand 433 states and 1305 transitions. [2022-01-18 15:38:57,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:38:57,142 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:38:57,142 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:38:57,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (99)] Ended with exit code 0 [2022-01-18 15:38:57,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219,99 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:57,342 INFO L402 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:38:57,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:38:57,342 INFO L85 PathProgramCache]: Analyzing trace with hash 1830660371, now seen corresponding path program 69 times [2022-01-18 15:38:57,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:38:57,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317216919] [2022-01-18 15:38:57,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:38:57,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:38:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:38:57,626 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:57,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:38:57,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317216919] [2022-01-18 15:38:57,627 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317216919] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:38:57,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2015007623] [2022-01-18 15:38:57,627 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:38:57,627 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:38:57,627 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:38:57,628 INFO L229 MonitoredProcess]: Starting monitored process 100 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:38:57,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Waiting until timeout for monitored process [2022-01-18 15:38:57,659 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:38:57,660 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:38:57,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:38:57,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:38:58,267 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:58,268 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:38:58,824 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:38:58,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 162 [2022-01-18 15:38:58,827 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 138 [2022-01-18 15:38:59,981 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:38:59,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:00,270 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:00,271 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:00,624 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:00,624 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:00,631 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:00,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:00,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:00,764 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2015007623] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:00,764 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:00,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:00,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818202229] [2022-01-18 15:39:00,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:00,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:00,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:00,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:00,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:00,764 INFO L87 Difference]: Start difference. First operand 433 states and 1305 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:01,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:01,604 INFO L93 Difference]: Finished difference Result 597 states and 1795 transitions. [2022-01-18 15:39:01,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:39:01,604 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:01,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:01,605 INFO L225 Difference]: With dead ends: 597 [2022-01-18 15:39:01,605 INFO L226 Difference]: Without dead ends: 574 [2022-01-18 15:39:01,605 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=171, Invalid=1161, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:39:01,605 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 79 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:01,605 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 326 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 416 Invalid, 0 Unknown, 239 Unchecked, 0.2s Time] [2022-01-18 15:39:01,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2022-01-18 15:39:01,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 441. [2022-01-18 15:39:01,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 441 states, 440 states have (on average 3.034090909090909) internal successors, (1335), 440 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:01,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 441 states to 441 states and 1335 transitions. [2022-01-18 15:39:01,610 INFO L78 Accepts]: Start accepts. Automaton has 441 states and 1335 transitions. Word has length 20 [2022-01-18 15:39:01,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:01,610 INFO L470 AbstractCegarLoop]: Abstraction has 441 states and 1335 transitions. [2022-01-18 15:39:01,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:01,611 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states and 1335 transitions. [2022-01-18 15:39:01,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:01,611 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:01,611 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:01,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (100)] Ended with exit code 0 [2022-01-18 15:39:01,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220,100 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:01,812 INFO L402 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:01,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:01,812 INFO L85 PathProgramCache]: Analyzing trace with hash 136902857, now seen corresponding path program 70 times [2022-01-18 15:39:01,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:01,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887262602] [2022-01-18 15:39:01,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:01,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:02,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:02,051 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887262602] [2022-01-18 15:39:02,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887262602] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:02,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1261303297] [2022-01-18 15:39:02,051 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:39:02,051 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:02,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:02,053 INFO L229 MonitoredProcess]: Starting monitored process 101 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:02,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-01-18 15:39:02,078 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:39:02,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:02,079 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:39:02,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:02,699 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:02,700 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-01-18 15:39:03,200 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:03,201 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 200 treesize of output 178 [2022-01-18 15:39:03,203 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 156 [2022-01-18 15:39:04,279 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:04,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:04,580 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:04,581 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:04,926 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:04,927 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:39:04,932 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:04,933 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:39:05,070 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:05,070 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1261303297] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:05,070 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:05,070 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:05,070 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706946986] [2022-01-18 15:39:05,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:05,070 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:05,070 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:05,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:05,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:05,071 INFO L87 Difference]: Start difference. First operand 441 states and 1335 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:06,039 INFO L93 Difference]: Finished difference Result 588 states and 1786 transitions. [2022-01-18 15:39:06,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:39:06,039 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:06,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:06,040 INFO L225 Difference]: With dead ends: 588 [2022-01-18 15:39:06,040 INFO L226 Difference]: Without dead ends: 581 [2022-01-18 15:39:06,040 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=179, Invalid=1227, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:39:06,040 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 91 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 382 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:06,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 252 Invalid, 672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 290 Invalid, 0 Unknown, 382 Unchecked, 0.1s Time] [2022-01-18 15:39:06,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-01-18 15:39:06,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 446. [2022-01-18 15:39:06,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 3.053932584269663) internal successors, (1359), 445 states have internal predecessors, (1359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:06,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 1359 transitions. [2022-01-18 15:39:06,045 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 1359 transitions. Word has length 20 [2022-01-18 15:39:06,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:06,045 INFO L470 AbstractCegarLoop]: Abstraction has 446 states and 1359 transitions. [2022-01-18 15:39:06,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:06,045 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 1359 transitions. [2022-01-18 15:39:06,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:06,046 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:06,046 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:06,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-01-18 15:39:06,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221,101 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:06,246 INFO L402 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:06,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:06,247 INFO L85 PathProgramCache]: Analyzing trace with hash 159499405, now seen corresponding path program 71 times [2022-01-18 15:39:06,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:06,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083819586] [2022-01-18 15:39:06,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:06,247 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:06,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:06,434 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:06,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:06,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083819586] [2022-01-18 15:39:06,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083819586] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:06,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [934571925] [2022-01-18 15:39:06,435 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:39:06,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:06,436 INFO L229 MonitoredProcess]: Starting monitored process 102 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:06,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Waiting until timeout for monitored process [2022-01-18 15:39:06,461 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:39:06,462 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:06,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:06,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:06,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 104 [2022-01-18 15:39:07,209 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 158 [2022-01-18 15:39:07,211 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 134 [2022-01-18 15:39:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:08,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:08,372 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:08,372 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-01-18 15:39:08,662 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:39:08,662 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 77 [2022-01-18 15:39:08,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-01-18 15:39:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:08,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [934571925] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:08,718 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:08,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:39:08,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029472516] [2022-01-18 15:39:08,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:08,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:39:08,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:08,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:39:08,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:39:08,718 INFO L87 Difference]: Start difference. First operand 446 states and 1359 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:11,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:11,510 INFO L93 Difference]: Finished difference Result 701 states and 2005 transitions. [2022-01-18 15:39:11,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:39:11,510 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:11,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:11,511 INFO L225 Difference]: With dead ends: 701 [2022-01-18 15:39:11,511 INFO L226 Difference]: Without dead ends: 642 [2022-01-18 15:39:11,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=220, Invalid=1186, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:39:11,511 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 229 mSDsluCounter, 801 mSDsCounter, 0 mSdLazyCounter, 1105 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 369 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:11,511 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [229 Valid, 369 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 1105 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:39:11,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 642 states. [2022-01-18 15:39:11,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 642 to 429. [2022-01-18 15:39:11,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 428 states have (on average 3.0163551401869158) internal successors, (1291), 428 states have internal predecessors, (1291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:11,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 1291 transitions. [2022-01-18 15:39:11,516 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 1291 transitions. Word has length 20 [2022-01-18 15:39:11,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:11,517 INFO L470 AbstractCegarLoop]: Abstraction has 429 states and 1291 transitions. [2022-01-18 15:39:11,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:11,517 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 1291 transitions. [2022-01-18 15:39:11,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:11,517 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:11,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:11,532 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (102)] Ended with exit code 0 [2022-01-18 15:39:11,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable222 [2022-01-18 15:39:11,718 INFO L402 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:11,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:11,718 INFO L85 PathProgramCache]: Analyzing trace with hash 977448749, now seen corresponding path program 72 times [2022-01-18 15:39:11,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:11,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576857853] [2022-01-18 15:39:11,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:11,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:11,953 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:11,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:11,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576857853] [2022-01-18 15:39:11,954 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576857853] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:11,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298763738] [2022-01-18 15:39:11,954 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:39:11,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:11,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:11,955 INFO L229 MonitoredProcess]: Starting monitored process 103 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:11,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Waiting until timeout for monitored process [2022-01-18 15:39:11,985 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:39:11,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:11,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:11,987 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:12,734 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:12,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:39:14,076 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:14,076 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 183 treesize of output 161 [2022-01-18 15:39:14,078 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 139 [2022-01-18 15:39:14,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:14,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:14,905 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:14,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:15,259 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:15,259 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:15,267 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:15,267 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:15,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:15,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1298763738] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:15,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:15,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:15,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193181440] [2022-01-18 15:39:15,392 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:15,392 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:15,392 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:15,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:15,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:15,393 INFO L87 Difference]: Start difference. First operand 429 states and 1291 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:16,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:16,255 INFO L93 Difference]: Finished difference Result 694 states and 2003 transitions. [2022-01-18 15:39:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:39:16,255 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:16,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:16,256 INFO L225 Difference]: With dead ends: 694 [2022-01-18 15:39:16,257 INFO L226 Difference]: Without dead ends: 681 [2022-01-18 15:39:16,257 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=159, Invalid=1401, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:39:16,257 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 156 mSDsluCounter, 973 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 613 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:16,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 556 Invalid, 1121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 482 Invalid, 0 Unknown, 613 Unchecked, 0.2s Time] [2022-01-18 15:39:16,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2022-01-18 15:39:16,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 444. [2022-01-18 15:39:16,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 443 states have (on average 3.0090293453724604) internal successors, (1333), 443 states have internal predecessors, (1333), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:16,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 1333 transitions. [2022-01-18 15:39:16,263 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 1333 transitions. Word has length 20 [2022-01-18 15:39:16,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:16,263 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 1333 transitions. [2022-01-18 15:39:16,263 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:16,263 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 1333 transitions. [2022-01-18 15:39:16,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:16,264 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:16,264 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:16,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (103)] Ended with exit code 0 [2022-01-18 15:39:16,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable223 [2022-01-18 15:39:16,464 INFO L402 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:16,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:16,464 INFO L85 PathProgramCache]: Analyzing trace with hash 788491629, now seen corresponding path program 73 times [2022-01-18 15:39:16,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:16,464 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360656698] [2022-01-18 15:39:16,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:16,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:16,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:16,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:16,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360656698] [2022-01-18 15:39:16,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360656698] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:16,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [608733984] [2022-01-18 15:39:16,731 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:39:16,731 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:16,731 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:16,732 INFO L229 MonitoredProcess]: Starting monitored process 104 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:16,732 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Waiting until timeout for monitored process [2022-01-18 15:39:16,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:16,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:39:16,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:17,338 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:17,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:39:18,303 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:18,304 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 133 [2022-01-18 15:39:18,306 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 113 [2022-01-18 15:39:18,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:18,766 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:19,042 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:19,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:19,405 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:19,405 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:39:19,411 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:19,411 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:39:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:19,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [608733984] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:19,541 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:19,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:19,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678589288] [2022-01-18 15:39:19,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:19,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:19,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:19,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:19,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:19,542 INFO L87 Difference]: Start difference. First operand 444 states and 1333 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:20,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:20,245 INFO L93 Difference]: Finished difference Result 744 states and 2171 transitions. [2022-01-18 15:39:20,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 15:39:20,246 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:20,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:20,247 INFO L225 Difference]: With dead ends: 744 [2022-01-18 15:39:20,247 INFO L226 Difference]: Without dead ends: 656 [2022-01-18 15:39:20,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:39:20,247 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 98 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 426 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 249 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:20,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 426 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 317 Invalid, 0 Unknown, 249 Unchecked, 0.1s Time] [2022-01-18 15:39:20,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-01-18 15:39:20,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 463. [2022-01-18 15:39:20,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 2.9805194805194803) internal successors, (1377), 462 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:20,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1377 transitions. [2022-01-18 15:39:20,253 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1377 transitions. Word has length 20 [2022-01-18 15:39:20,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:20,253 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 1377 transitions. [2022-01-18 15:39:20,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:20,253 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1377 transitions. [2022-01-18 15:39:20,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:20,253 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:20,253 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:20,269 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (104)] Forceful destruction successful, exit code 0 [2022-01-18 15:39:20,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 104 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable224 [2022-01-18 15:39:20,454 INFO L402 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:20,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:20,454 INFO L85 PathProgramCache]: Analyzing trace with hash 159010147, now seen corresponding path program 74 times [2022-01-18 15:39:20,454 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:20,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197645645] [2022-01-18 15:39:20,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:20,455 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:20,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:20,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:20,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197645645] [2022-01-18 15:39:20,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1197645645] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:20,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106653224] [2022-01-18 15:39:20,648 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:39:20,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:20,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:20,650 INFO L229 MonitoredProcess]: Starting monitored process 105 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:20,652 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-01-18 15:39:20,675 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:39:20,675 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:20,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:20,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:21,341 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:21,342 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:39:22,746 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:22,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 141 [2022-01-18 15:39:22,749 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-01-18 15:39:23,245 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:23,245 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:23,522 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:23,523 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:23,897 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:23,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:23,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:23,904 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:24,039 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:24,039 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106653224] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:24,039 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:24,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:24,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718180753] [2022-01-18 15:39:24,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:24,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:24,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:24,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:24,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:24,040 INFO L87 Difference]: Start difference. First operand 463 states and 1377 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:25,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:25,031 INFO L93 Difference]: Finished difference Result 699 states and 2033 transitions. [2022-01-18 15:39:25,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 15:39:25,031 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:25,032 INFO L225 Difference]: With dead ends: 699 [2022-01-18 15:39:25,032 INFO L226 Difference]: Without dead ends: 693 [2022-01-18 15:39:25,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:39:25,032 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 140 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 631 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:25,033 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [140 Valid, 481 Invalid, 1091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 456 Invalid, 0 Unknown, 631 Unchecked, 0.2s Time] [2022-01-18 15:39:25,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2022-01-18 15:39:25,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 482. [2022-01-18 15:39:25,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 482 states, 481 states have (on average 2.970893970893971) internal successors, (1429), 481 states have internal predecessors, (1429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:25,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482 states to 482 states and 1429 transitions. [2022-01-18 15:39:25,039 INFO L78 Accepts]: Start accepts. Automaton has 482 states and 1429 transitions. Word has length 20 [2022-01-18 15:39:25,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:25,039 INFO L470 AbstractCegarLoop]: Abstraction has 482 states and 1429 transitions. [2022-01-18 15:39:25,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:25,039 INFO L276 IsEmpty]: Start isEmpty. Operand 482 states and 1429 transitions. [2022-01-18 15:39:25,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:25,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:25,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:25,055 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Forceful destruction successful, exit code 0 [2022-01-18 15:39:25,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225,105 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:25,240 INFO L402 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:25,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:25,240 INFO L85 PathProgramCache]: Analyzing trace with hash 2108693741, now seen corresponding path program 75 times [2022-01-18 15:39:25,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:25,241 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149570121] [2022-01-18 15:39:25,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:25,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:25,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:25,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:25,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149570121] [2022-01-18 15:39:25,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149570121] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:25,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92456317] [2022-01-18 15:39:25,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:39:25,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:25,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:25,483 INFO L229 MonitoredProcess]: Starting monitored process 106 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:25,484 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Waiting until timeout for monitored process [2022-01-18 15:39:25,508 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:39:25,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:25,508 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:25,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:26,166 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:26,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:39:26,863 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:26,864 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 158 [2022-01-18 15:39:26,866 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2022-01-18 15:39:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:28,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:28,385 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:28,385 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:28,715 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:28,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:28,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:28,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:28,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:28,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [92456317] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:28,846 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:28,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:28,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611218589] [2022-01-18 15:39:28,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:28,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:28,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:28,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:28,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:28,847 INFO L87 Difference]: Start difference. First operand 482 states and 1429 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:30,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:30,561 INFO L93 Difference]: Finished difference Result 764 states and 2246 transitions. [2022-01-18 15:39:30,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 15:39:30,561 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:30,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:30,562 INFO L225 Difference]: With dead ends: 764 [2022-01-18 15:39:30,563 INFO L226 Difference]: Without dead ends: 671 [2022-01-18 15:39:30,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=181, Invalid=1379, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:39:30,563 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 141 mSDsluCounter, 988 mSDsCounter, 0 mSdLazyCounter, 696 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 569 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 696 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 447 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:30,563 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 569 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 696 Invalid, 0 Unknown, 447 Unchecked, 0.3s Time] [2022-01-18 15:39:30,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-01-18 15:39:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 495. [2022-01-18 15:39:30,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 495 states, 494 states have (on average 2.983805668016194) internal successors, (1474), 494 states have internal predecessors, (1474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:30,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 495 states to 495 states and 1474 transitions. [2022-01-18 15:39:30,569 INFO L78 Accepts]: Start accepts. Automaton has 495 states and 1474 transitions. Word has length 20 [2022-01-18 15:39:30,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:30,569 INFO L470 AbstractCegarLoop]: Abstraction has 495 states and 1474 transitions. [2022-01-18 15:39:30,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:30,569 INFO L276 IsEmpty]: Start isEmpty. Operand 495 states and 1474 transitions. [2022-01-18 15:39:30,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:30,569 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:30,569 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:30,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (106)] Forceful destruction successful, exit code 0 [2022-01-18 15:39:30,770 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable226 [2022-01-18 15:39:30,770 INFO L402 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:30,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:30,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1592222201, now seen corresponding path program 76 times [2022-01-18 15:39:30,770 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:30,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068085483] [2022-01-18 15:39:30,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:30,771 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:30,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:30,989 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068085483] [2022-01-18 15:39:30,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068085483] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:30,989 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [793631726] [2022-01-18 15:39:30,989 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:39:30,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:30,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:30,990 INFO L229 MonitoredProcess]: Starting monitored process 107 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:30,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Waiting until timeout for monitored process [2022-01-18 15:39:31,029 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:39:31,030 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:31,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:39:31,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:31,617 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:31,618 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:39:32,638 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:32,639 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-01-18 15:39:32,641 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:39:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:33,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:33,449 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:33,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:33,874 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:33,874 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:39:33,880 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:33,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:39:34,033 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:34,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [793631726] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:34,033 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:34,033 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:34,033 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758829760] [2022-01-18 15:39:34,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:34,033 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:34,033 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:34,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:34,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:34,034 INFO L87 Difference]: Start difference. First operand 495 states and 1474 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:34,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:34,744 INFO L93 Difference]: Finished difference Result 700 states and 2091 transitions. [2022-01-18 15:39:34,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:39:34,744 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:34,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:34,745 INFO L225 Difference]: With dead ends: 700 [2022-01-18 15:39:34,745 INFO L226 Difference]: Without dead ends: 634 [2022-01-18 15:39:34,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=1195, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:39:34,746 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 119 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 472 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 866 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 376 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:34,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 499 Invalid, 866 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 472 Invalid, 0 Unknown, 376 Unchecked, 0.2s Time] [2022-01-18 15:39:34,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2022-01-18 15:39:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 506. [2022-01-18 15:39:34,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 505 states have (on average 2.988118811881188) internal successors, (1509), 505 states have internal predecessors, (1509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:34,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 1509 transitions. [2022-01-18 15:39:34,753 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 1509 transitions. Word has length 20 [2022-01-18 15:39:34,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:34,753 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 1509 transitions. [2022-01-18 15:39:34,753 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:34,753 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 1509 transitions. [2022-01-18 15:39:34,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:34,754 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:34,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:34,769 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (107)] Forceful destruction successful, exit code 0 [2022-01-18 15:39:34,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 107 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable227 [2022-01-18 15:39:34,955 INFO L402 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:34,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:34,955 INFO L85 PathProgramCache]: Analyzing trace with hash -1243887571, now seen corresponding path program 77 times [2022-01-18 15:39:34,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:34,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12442523] [2022-01-18 15:39:34,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:34,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:34,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:35,185 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:35,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12442523] [2022-01-18 15:39:35,185 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12442523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:35,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803025005] [2022-01-18 15:39:35,185 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:39:35,185 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:35,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:35,186 INFO L229 MonitoredProcess]: Starting monitored process 108 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:35,186 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-01-18 15:39:35,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:39:35,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:35,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 15:39:35,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:35,501 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2022-01-18 15:39:35,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 167 treesize of output 145 [2022-01-18 15:39:35,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 123 [2022-01-18 15:39:36,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:36,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:36,742 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:36,742 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 114 [2022-01-18 15:39:37,110 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:39:37,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 81 [2022-01-18 15:39:37,112 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 78 treesize of output 62 [2022-01-18 15:39:37,118 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:37,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803025005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:37,118 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:37,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:39:37,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726087493] [2022-01-18 15:39:37,118 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:37,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:39:37,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:37,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:39:37,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:39:37,119 INFO L87 Difference]: Start difference. First operand 506 states and 1509 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:38,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:38,698 INFO L93 Difference]: Finished difference Result 704 states and 2044 transitions. [2022-01-18 15:39:38,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:39:38,698 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:38,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:38,699 INFO L225 Difference]: With dead ends: 704 [2022-01-18 15:39:38,699 INFO L226 Difference]: Without dead ends: 656 [2022-01-18 15:39:38,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=193, Invalid=1139, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:39:38,700 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 130 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 1035 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1035 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:38,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [130 Valid, 348 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1035 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:39:38,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-01-18 15:39:38,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 512. [2022-01-18 15:39:38,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.984344422700587) internal successors, (1525), 511 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:38,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1525 transitions. [2022-01-18 15:39:38,706 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1525 transitions. Word has length 20 [2022-01-18 15:39:38,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:38,706 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1525 transitions. [2022-01-18 15:39:38,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:38,706 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1525 transitions. [2022-01-18 15:39:38,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:38,706 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:38,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:38,722 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Ended with exit code 0 [2022-01-18 15:39:38,907 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228,108 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:38,907 INFO L402 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:38,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:38,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1056614569, now seen corresponding path program 78 times [2022-01-18 15:39:38,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:38,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982614761] [2022-01-18 15:39:38,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:38,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:39,097 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:39,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:39,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982614761] [2022-01-18 15:39:39,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [982614761] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:39,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829785312] [2022-01-18 15:39:39,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:39:39,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:39,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:39,098 INFO L229 MonitoredProcess]: Starting monitored process 109 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:39,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Waiting until timeout for monitored process [2022-01-18 15:39:39,123 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:39:39,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:39,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:39,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:39,843 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:39,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 81 [2022-01-18 15:39:40,335 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:40,336 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2022-01-18 15:39:40,338 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 118 [2022-01-18 15:39:41,468 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:41,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:41,767 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:41,767 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:39:42,229 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:42,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:42,236 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:42,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:42,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829785312] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:42,355 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:42,355 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:42,355 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652340416] [2022-01-18 15:39:42,355 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:42,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:42,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:42,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:42,356 INFO L87 Difference]: Start difference. First operand 512 states and 1525 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:43,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:43,635 INFO L93 Difference]: Finished difference Result 739 states and 2103 transitions. [2022-01-18 15:39:43,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:39:43,635 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:43,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:43,636 INFO L225 Difference]: With dead ends: 739 [2022-01-18 15:39:43,636 INFO L226 Difference]: Without dead ends: 625 [2022-01-18 15:39:43,636 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:39:43,636 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 119 mSDsluCounter, 909 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 1014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 186 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:43,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [119 Valid, 517 Invalid, 1014 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 795 Invalid, 0 Unknown, 186 Unchecked, 0.4s Time] [2022-01-18 15:39:43,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-01-18 15:39:43,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 518. [2022-01-18 15:39:43,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 518 states, 517 states have (on average 2.980657640232108) internal successors, (1541), 517 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:43,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 518 states to 518 states and 1541 transitions. [2022-01-18 15:39:43,643 INFO L78 Accepts]: Start accepts. Automaton has 518 states and 1541 transitions. Word has length 20 [2022-01-18 15:39:43,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:43,644 INFO L470 AbstractCegarLoop]: Abstraction has 518 states and 1541 transitions. [2022-01-18 15:39:43,644 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:43,644 INFO L276 IsEmpty]: Start isEmpty. Operand 518 states and 1541 transitions. [2022-01-18 15:39:43,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:43,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:43,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:43,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (109)] Forceful destruction successful, exit code 0 [2022-01-18 15:39:43,866 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229,109 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:43,867 INFO L402 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:43,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:43,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1092181967, now seen corresponding path program 79 times [2022-01-18 15:39:43,867 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:43,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34259010] [2022-01-18 15:39:43,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:43,867 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:44,126 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:44,126 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34259010] [2022-01-18 15:39:44,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34259010] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:44,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [294284504] [2022-01-18 15:39:44,126 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:39:44,126 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:44,126 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:44,127 INFO L229 MonitoredProcess]: Starting monitored process 110 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:44,128 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Waiting until timeout for monitored process [2022-01-18 15:39:44,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:44,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:39:44,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:44,837 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:44,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:39:45,246 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:45,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 157 [2022-01-18 15:39:45,248 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 137 [2022-01-18 15:39:46,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:46,059 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:46,351 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:46,352 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:46,832 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:46,832 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:39:46,838 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:46,838 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:39:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:46,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [294284504] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:46,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:46,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:46,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223323322] [2022-01-18 15:39:46,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:46,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:46,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:46,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:46,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:46,987 INFO L87 Difference]: Start difference. First operand 518 states and 1541 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:48,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:48,504 INFO L93 Difference]: Finished difference Result 718 states and 2064 transitions. [2022-01-18 15:39:48,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:39:48,505 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:48,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:48,506 INFO L225 Difference]: With dead ends: 718 [2022-01-18 15:39:48,506 INFO L226 Difference]: Without dead ends: 625 [2022-01-18 15:39:48,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=183, Invalid=1377, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:39:48,506 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 199 mSDsluCounter, 882 mSDsCounter, 0 mSdLazyCounter, 752 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 433 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 482 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:48,506 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 433 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 752 Invalid, 0 Unknown, 482 Unchecked, 0.4s Time] [2022-01-18 15:39:48,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 625 states. [2022-01-18 15:39:48,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 625 to 521. [2022-01-18 15:39:48,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.9846153846153847) internal successors, (1552), 520 states have internal predecessors, (1552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:48,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1552 transitions. [2022-01-18 15:39:48,512 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1552 transitions. Word has length 20 [2022-01-18 15:39:48,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:48,512 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1552 transitions. [2022-01-18 15:39:48,512 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:48,512 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1552 transitions. [2022-01-18 15:39:48,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:48,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:48,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:48,527 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (110)] Ended with exit code 0 [2022-01-18 15:39:48,713 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 110 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable230 [2022-01-18 15:39:48,713 INFO L402 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:48,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:48,713 INFO L85 PathProgramCache]: Analyzing trace with hash -498130613, now seen corresponding path program 80 times [2022-01-18 15:39:48,713 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:48,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538318723] [2022-01-18 15:39:48,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:48,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:48,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:48,901 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:48,901 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:48,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538318723] [2022-01-18 15:39:48,901 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538318723] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:48,901 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481942551] [2022-01-18 15:39:48,902 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:39:48,902 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:48,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:48,903 INFO L229 MonitoredProcess]: Starting monitored process 111 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:48,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-01-18 15:39:48,927 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:39:48,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:48,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:48,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:49,672 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:49,673 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:39:50,731 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:50,731 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 177 treesize of output 157 [2022-01-18 15:39:50,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 157 treesize of output 137 [2022-01-18 15:39:51,312 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:51,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:51,577 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:51,577 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:51,953 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:51,954 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:51,960 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:51,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:52,098 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:52,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1481942551] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:52,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:52,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:52,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511334517] [2022-01-18 15:39:52,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:52,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:52,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:52,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:52,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:52,099 INFO L87 Difference]: Start difference. First operand 521 states and 1552 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:52,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:52,662 INFO L93 Difference]: Finished difference Result 621 states and 1836 transitions. [2022-01-18 15:39:52,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:39:52,662 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:52,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:52,663 INFO L225 Difference]: With dead ends: 621 [2022-01-18 15:39:52,663 INFO L226 Difference]: Without dead ends: 577 [2022-01-18 15:39:52,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 15:39:52,663 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 49 mSDsluCounter, 455 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:52,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 273 Invalid, 456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 388 Invalid, 0 Unknown, 61 Unchecked, 0.2s Time] [2022-01-18 15:39:52,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2022-01-18 15:39:52,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 530. [2022-01-18 15:39:52,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 530 states, 529 states have (on average 2.9697542533081287) internal successors, (1571), 529 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:52,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 530 states to 530 states and 1571 transitions. [2022-01-18 15:39:52,669 INFO L78 Accepts]: Start accepts. Automaton has 530 states and 1571 transitions. Word has length 20 [2022-01-18 15:39:52,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:52,669 INFO L470 AbstractCegarLoop]: Abstraction has 530 states and 1571 transitions. [2022-01-18 15:39:52,669 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:52,669 INFO L276 IsEmpty]: Start isEmpty. Operand 530 states and 1571 transitions. [2022-01-18 15:39:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:52,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:52,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:52,685 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-01-18 15:39:52,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231,111 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:52,870 INFO L402 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:52,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:52,871 INFO L85 PathProgramCache]: Analyzing trace with hash 474800009, now seen corresponding path program 81 times [2022-01-18 15:39:52,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:52,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355198022] [2022-01-18 15:39:52,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:52,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:52,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:53,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:53,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:53,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355198022] [2022-01-18 15:39:53,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355198022] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:53,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [251805137] [2022-01-18 15:39:53,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:39:53,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:53,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:53,102 INFO L229 MonitoredProcess]: Starting monitored process 112 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:53,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Waiting until timeout for monitored process [2022-01-18 15:39:53,127 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:39:53,127 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:53,127 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:39:53,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:53,864 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:53,865 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 115 treesize of output 99 [2022-01-18 15:39:54,974 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:54,975 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 146 [2022-01-18 15:39:54,977 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 128 [2022-01-18 15:39:55,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:55,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:39:55,758 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:55,758 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:39:56,145 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:56,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:39:56,152 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:39:56,153 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:39:56,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:56,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [251805137] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:39:56,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:39:56,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:39:56,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632656609] [2022-01-18 15:39:56,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:39:56,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:39:56,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:39:56,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:39:56,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:39:56,318 INFO L87 Difference]: Start difference. First operand 530 states and 1571 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:57,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:39:57,005 INFO L93 Difference]: Finished difference Result 589 states and 1758 transitions. [2022-01-18 15:39:57,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 15:39:57,006 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:39:57,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:39:57,007 INFO L225 Difference]: With dead ends: 589 [2022-01-18 15:39:57,007 INFO L226 Difference]: Without dead ends: 578 [2022-01-18 15:39:57,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=131, Invalid=1129, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:39:57,007 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 39 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 123 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:39:57,007 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 329 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 519 Invalid, 0 Unknown, 123 Unchecked, 0.2s Time] [2022-01-18 15:39:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2022-01-18 15:39:57,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 527. [2022-01-18 15:39:57,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 526 states have (on average 2.9771863117870723) internal successors, (1566), 526 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:57,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 1566 transitions. [2022-01-18 15:39:57,013 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 1566 transitions. Word has length 20 [2022-01-18 15:39:57,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:39:57,013 INFO L470 AbstractCegarLoop]: Abstraction has 527 states and 1566 transitions. [2022-01-18 15:39:57,013 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:39:57,013 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 1566 transitions. [2022-01-18 15:39:57,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:39:57,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:39:57,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:39:57,029 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (112)] Forceful destruction successful, exit code 0 [2022-01-18 15:39:57,214 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 112 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable232 [2022-01-18 15:39:57,214 INFO L402 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:39:57,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:39:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash -849080827, now seen corresponding path program 82 times [2022-01-18 15:39:57,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:39:57,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700459613] [2022-01-18 15:39:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:39:57,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:39:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:39:57,487 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:57,487 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:39:57,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700459613] [2022-01-18 15:39:57,487 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700459613] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:39:57,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [34955602] [2022-01-18 15:39:57,488 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:39:57,488 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:39:57,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:39:57,489 INFO L229 MonitoredProcess]: Starting monitored process 113 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:39:57,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Waiting until timeout for monitored process [2022-01-18 15:39:57,514 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:39:57,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:39:57,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:39:57,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:39:58,012 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:58,012 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 101 [2022-01-18 15:39:59,262 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:39:59,262 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-01-18 15:39:59,264 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:39:59,720 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:39:59,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:00,010 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:00,010 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:00,421 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:00,421 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:40:00,427 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:00,427 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:40:00,582 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:00,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [34955602] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:00,583 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:00,583 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:00,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955071157] [2022-01-18 15:40:00,583 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:00,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:00,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:00,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:00,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:00,584 INFO L87 Difference]: Start difference. First operand 527 states and 1566 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:01,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:01,310 INFO L93 Difference]: Finished difference Result 692 states and 2037 transitions. [2022-01-18 15:40:01,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:40:01,310 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:01,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:01,312 INFO L225 Difference]: With dead ends: 692 [2022-01-18 15:40:01,312 INFO L226 Difference]: Without dead ends: 665 [2022-01-18 15:40:01,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:40:01,312 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 63 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 509 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 163 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:01,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [63 Valid, 299 Invalid, 509 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 337 Invalid, 0 Unknown, 163 Unchecked, 0.1s Time] [2022-01-18 15:40:01,312 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 665 states. [2022-01-18 15:40:01,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 665 to 555. [2022-01-18 15:40:01,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 554 states have (on average 2.9566787003610107) internal successors, (1638), 554 states have internal predecessors, (1638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:01,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 1638 transitions. [2022-01-18 15:40:01,319 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 1638 transitions. Word has length 20 [2022-01-18 15:40:01,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:01,319 INFO L470 AbstractCegarLoop]: Abstraction has 555 states and 1638 transitions. [2022-01-18 15:40:01,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:01,319 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 1638 transitions. [2022-01-18 15:40:01,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:01,320 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:01,320 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:01,338 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (113)] Ended with exit code 0 [2022-01-18 15:40:01,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable233 [2022-01-18 15:40:01,531 INFO L402 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:01,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash -618498487, now seen corresponding path program 83 times [2022-01-18 15:40:01,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:01,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598536342] [2022-01-18 15:40:01,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:01,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:01,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:01,716 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:01,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598536342] [2022-01-18 15:40:01,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598536342] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:01,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092278128] [2022-01-18 15:40:01,716 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:40:01,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:01,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:01,717 INFO L229 MonitoredProcess]: Starting monitored process 114 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:01,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-01-18 15:40:01,742 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:40:01,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:01,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:40:01,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:02,038 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 97 [2022-01-18 15:40:02,752 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 138 [2022-01-18 15:40:02,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:40:03,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:03,210 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:03,503 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:03,503 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:03,857 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:40:03,857 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 77 [2022-01-18 15:40:03,860 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 74 treesize of output 58 [2022-01-18 15:40:03,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:03,919 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092278128] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:03,919 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:03,919 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:40:03,919 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746706417] [2022-01-18 15:40:03,919 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:03,919 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:40:03,919 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:03,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:40:03,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:40:03,920 INFO L87 Difference]: Start difference. First operand 555 states and 1638 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:09,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:09,101 INFO L93 Difference]: Finished difference Result 929 states and 2617 transitions. [2022-01-18 15:40:09,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 15:40:09,101 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:09,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:09,102 INFO L225 Difference]: With dead ends: 929 [2022-01-18 15:40:09,102 INFO L226 Difference]: Without dead ends: 807 [2022-01-18 15:40:09,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=301, Invalid=1591, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 15:40:09,103 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 242 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 1479 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 1515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1479 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:09,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 513 Invalid, 1515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1479 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 15:40:09,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-01-18 15:40:09,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 486. [2022-01-18 15:40:09,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 486 states, 485 states have (on average 3.002061855670103) internal successors, (1456), 485 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:09,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 486 states to 486 states and 1456 transitions. [2022-01-18 15:40:09,109 INFO L78 Accepts]: Start accepts. Automaton has 486 states and 1456 transitions. Word has length 20 [2022-01-18 15:40:09,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:09,109 INFO L470 AbstractCegarLoop]: Abstraction has 486 states and 1456 transitions. [2022-01-18 15:40:09,109 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:09,109 INFO L276 IsEmpty]: Start isEmpty. Operand 486 states and 1456 transitions. [2022-01-18 15:40:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:09,110 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:09,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:09,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-01-18 15:40:09,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234,114 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:09,310 INFO L402 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:09,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:09,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1065172639, now seen corresponding path program 84 times [2022-01-18 15:40:09,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:09,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841025034] [2022-01-18 15:40:09,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:09,311 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:09,523 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:09,523 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:09,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841025034] [2022-01-18 15:40:09,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841025034] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:09,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577267530] [2022-01-18 15:40:09,523 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:40:09,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:09,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:09,524 INFO L229 MonitoredProcess]: Starting monitored process 115 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:09,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Waiting until timeout for monitored process [2022-01-18 15:40:09,549 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:40:09,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:09,550 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:40:09,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:10,191 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:10,195 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 113 [2022-01-18 15:40:11,594 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:11,595 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 141 [2022-01-18 15:40:11,597 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 [2022-01-18 15:40:12,108 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:12,109 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:12,415 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:12,415 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:12,773 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:12,774 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:40:12,783 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:12,783 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:40:12,915 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:12,915 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577267530] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:12,915 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:12,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:12,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187751695] [2022-01-18 15:40:12,915 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:12,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:12,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:12,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:12,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:12,916 INFO L87 Difference]: Start difference. First operand 486 states and 1456 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:14,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:14,046 INFO L93 Difference]: Finished difference Result 711 states and 2079 transitions. [2022-01-18 15:40:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:40:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:14,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:14,048 INFO L225 Difference]: With dead ends: 711 [2022-01-18 15:40:14,048 INFO L226 Difference]: Without dead ends: 652 [2022-01-18 15:40:14,048 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:40:14,048 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 92 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 1227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 484 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:14,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 610 Invalid, 1227 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 732 Invalid, 0 Unknown, 484 Unchecked, 0.3s Time] [2022-01-18 15:40:14,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 652 states. [2022-01-18 15:40:14,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 652 to 519. [2022-01-18 15:40:14,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 2.972972972972973) internal successors, (1540), 518 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:14,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1540 transitions. [2022-01-18 15:40:14,054 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1540 transitions. Word has length 20 [2022-01-18 15:40:14,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:14,054 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 1540 transitions. [2022-01-18 15:40:14,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:14,054 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1540 transitions. [2022-01-18 15:40:14,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:14,055 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:14,055 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:14,070 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (115)] Ended with exit code 0 [2022-01-18 15:40:14,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 115 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable235 [2022-01-18 15:40:14,255 INFO L402 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:14,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:14,256 INFO L85 PathProgramCache]: Analyzing trace with hash 2038103261, now seen corresponding path program 85 times [2022-01-18 15:40:14,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:14,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512923132] [2022-01-18 15:40:14,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:14,256 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:14,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:14,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:14,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512923132] [2022-01-18 15:40:14,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512923132] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:14,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [206356576] [2022-01-18 15:40:14,507 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:40:14,507 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:14,507 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:14,508 INFO L229 MonitoredProcess]: Starting monitored process 116 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:14,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Waiting until timeout for monitored process [2022-01-18 15:40:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:14,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:40:14,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:15,088 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:15,090 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:40:16,531 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:16,532 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 164 treesize of output 144 [2022-01-18 15:40:16,534 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 124 [2022-01-18 15:40:16,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:16,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:17,257 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:17,257 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:17,664 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:17,664 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:40:17,670 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:17,670 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:40:17,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:17,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [206356576] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:17,821 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:17,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:17,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396140365] [2022-01-18 15:40:17,821 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:17,821 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:17,821 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:17,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:17,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:17,822 INFO L87 Difference]: Start difference. First operand 519 states and 1540 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:18,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:18,364 INFO L93 Difference]: Finished difference Result 582 states and 1747 transitions. [2022-01-18 15:40:18,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:40:18,364 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:18,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:18,365 INFO L225 Difference]: With dead ends: 582 [2022-01-18 15:40:18,366 INFO L226 Difference]: Without dead ends: 571 [2022-01-18 15:40:18,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=123, Invalid=1067, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:40:18,366 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 47 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 278 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 171 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:18,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 278 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 291 Invalid, 0 Unknown, 171 Unchecked, 0.1s Time] [2022-01-18 15:40:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 571 states. [2022-01-18 15:40:18,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 571 to 519. [2022-01-18 15:40:18,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 519 states, 518 states have (on average 2.971042471042471) internal successors, (1539), 518 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:18,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 519 states to 519 states and 1539 transitions. [2022-01-18 15:40:18,371 INFO L78 Accepts]: Start accepts. Automaton has 519 states and 1539 transitions. Word has length 20 [2022-01-18 15:40:18,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:18,371 INFO L470 AbstractCegarLoop]: Abstraction has 519 states and 1539 transitions. [2022-01-18 15:40:18,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:18,372 INFO L276 IsEmpty]: Start isEmpty. Operand 519 states and 1539 transitions. [2022-01-18 15:40:18,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:18,372 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:18,372 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:18,388 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (116)] Ended with exit code 0 [2022-01-18 15:40:18,572 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable236 [2022-01-18 15:40:18,573 INFO L402 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:18,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:18,573 INFO L85 PathProgramCache]: Analyzing trace with hash -704369359, now seen corresponding path program 86 times [2022-01-18 15:40:18,573 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:18,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576922043] [2022-01-18 15:40:18,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:18,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:18,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:18,853 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:18,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:18,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576922043] [2022-01-18 15:40:18,853 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576922043] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:18,853 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442629760] [2022-01-18 15:40:18,853 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:40:18,853 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:18,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:18,854 INFO L229 MonitoredProcess]: Starting monitored process 117 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:18,865 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-01-18 15:40:18,889 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:40:18,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:18,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 15:40:18,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:19,296 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:19,297 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 114 treesize of output 98 [2022-01-18 15:40:20,014 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:20,015 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 188 treesize of output 166 [2022-01-18 15:40:20,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 144 [2022-01-18 15:40:20,861 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:20,861 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:21,307 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:21,308 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 115 treesize of output 107 [2022-01-18 15:40:21,685 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:21,686 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-01-18 15:40:21,691 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:21,691 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 94 treesize of output 86 [2022-01-18 15:40:21,803 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:21,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442629760] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:21,803 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:21,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:21,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322756636] [2022-01-18 15:40:21,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:21,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:21,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:21,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:21,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:21,804 INFO L87 Difference]: Start difference. First operand 519 states and 1539 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:22,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:22,929 INFO L93 Difference]: Finished difference Result 634 states and 1871 transitions. [2022-01-18 15:40:22,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:40:22,930 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:22,931 INFO L225 Difference]: With dead ends: 634 [2022-01-18 15:40:22,931 INFO L226 Difference]: Without dead ends: 609 [2022-01-18 15:40:22,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=142, Invalid=1118, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:40:22,931 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 75 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 624 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:22,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 301 Invalid, 624 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 465 Invalid, 0 Unknown, 138 Unchecked, 0.2s Time] [2022-01-18 15:40:22,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2022-01-18 15:40:22,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 517. [2022-01-18 15:40:22,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 2.9786821705426356) internal successors, (1537), 516 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:22,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1537 transitions. [2022-01-18 15:40:22,937 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1537 transitions. Word has length 20 [2022-01-18 15:40:22,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:22,937 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 1537 transitions. [2022-01-18 15:40:22,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:22,937 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1537 transitions. [2022-01-18 15:40:22,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:22,937 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:22,937 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:22,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Ended with exit code 0 [2022-01-18 15:40:23,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237,117 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:23,138 INFO L402 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:23,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:23,138 INFO L85 PathProgramCache]: Analyzing trace with hash -1105256083, now seen corresponding path program 87 times [2022-01-18 15:40:23,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:23,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981320844] [2022-01-18 15:40:23,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:23,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:23,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:23,376 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:23,376 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:23,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981320844] [2022-01-18 15:40:23,376 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981320844] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:23,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1353773345] [2022-01-18 15:40:23,376 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:40:23,376 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:23,376 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:23,377 INFO L229 MonitoredProcess]: Starting monitored process 118 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:23,378 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Waiting until timeout for monitored process [2022-01-18 15:40:23,406 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:40:23,406 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:23,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:40:23,407 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:24,116 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:24,117 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-01-18 15:40:24,925 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:24,925 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 146 [2022-01-18 15:40:24,928 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 126 [2022-01-18 15:40:25,923 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:25,923 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:26,244 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:26,245 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:40:26,633 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:26,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:40:26,639 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:26,640 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:40:26,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:26,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1353773345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:26,763 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:26,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:26,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485553321] [2022-01-18 15:40:26,763 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:26,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:26,763 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:26,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:26,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:26,764 INFO L87 Difference]: Start difference. First operand 517 states and 1537 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:28,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:28,553 INFO L93 Difference]: Finished difference Result 844 states and 2422 transitions. [2022-01-18 15:40:28,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 15:40:28,553 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:28,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:28,554 INFO L225 Difference]: With dead ends: 844 [2022-01-18 15:40:28,554 INFO L226 Difference]: Without dead ends: 709 [2022-01-18 15:40:28,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 262 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=214, Invalid=1678, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 15:40:28,555 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 178 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 491 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:28,555 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [178 Valid, 673 Invalid, 1623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1089 Invalid, 0 Unknown, 491 Unchecked, 0.5s Time] [2022-01-18 15:40:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 709 states. [2022-01-18 15:40:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 709 to 517. [2022-01-18 15:40:28,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 517 states, 516 states have (on average 2.9786821705426356) internal successors, (1537), 516 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:28,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 517 states to 517 states and 1537 transitions. [2022-01-18 15:40:28,561 INFO L78 Accepts]: Start accepts. Automaton has 517 states and 1537 transitions. Word has length 20 [2022-01-18 15:40:28,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:28,561 INFO L470 AbstractCegarLoop]: Abstraction has 517 states and 1537 transitions. [2022-01-18 15:40:28,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:28,561 INFO L276 IsEmpty]: Start isEmpty. Operand 517 states and 1537 transitions. [2022-01-18 15:40:28,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:28,562 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:28,562 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:28,578 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (118)] Forceful destruction successful, exit code 0 [2022-01-18 15:40:28,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238,118 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:28,762 INFO L402 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:28,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:28,763 INFO L85 PathProgramCache]: Analyzing trace with hash 1716365087, now seen corresponding path program 88 times [2022-01-18 15:40:28,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:28,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187291091] [2022-01-18 15:40:28,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:28,763 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:28,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:28,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:28,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187291091] [2022-01-18 15:40:28,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187291091] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:28,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510793192] [2022-01-18 15:40:28,969 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:40:28,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:28,969 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:28,970 INFO L229 MonitoredProcess]: Starting monitored process 119 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:28,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Waiting until timeout for monitored process [2022-01-18 15:40:28,995 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:40:28,995 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:28,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:40:28,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:29,701 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:29,701 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:40:30,682 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:30,683 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 133 [2022-01-18 15:40:30,685 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 115 [2022-01-18 15:40:31,208 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:31,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:31,453 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:31,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:31,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:31,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:40:31,920 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:31,920 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:40:32,091 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:32,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510793192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:32,091 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:32,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:32,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313524491] [2022-01-18 15:40:32,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:32,091 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:32,091 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:32,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:32,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=623, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:32,092 INFO L87 Difference]: Start difference. First operand 517 states and 1537 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:32,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:32,630 INFO L93 Difference]: Finished difference Result 581 states and 1730 transitions. [2022-01-18 15:40:32,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:40:32,630 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:32,631 INFO L225 Difference]: With dead ends: 581 [2022-01-18 15:40:32,631 INFO L226 Difference]: Without dead ends: 561 [2022-01-18 15:40:32,632 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=131, Invalid=991, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 15:40:32,632 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 37 mSDsluCounter, 448 mSDsCounter, 0 mSdLazyCounter, 393 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 453 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 393 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:32,632 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 264 Invalid, 453 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 393 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2022-01-18 15:40:32,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 561 states. [2022-01-18 15:40:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 561 to 521. [2022-01-18 15:40:32,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 521 states, 520 states have (on average 2.9692307692307693) internal successors, (1544), 520 states have internal predecessors, (1544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 521 states to 521 states and 1544 transitions. [2022-01-18 15:40:32,637 INFO L78 Accepts]: Start accepts. Automaton has 521 states and 1544 transitions. Word has length 20 [2022-01-18 15:40:32,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:32,637 INFO L470 AbstractCegarLoop]: Abstraction has 521 states and 1544 transitions. [2022-01-18 15:40:32,637 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:32,637 INFO L276 IsEmpty]: Start isEmpty. Operand 521 states and 1544 transitions. [2022-01-18 15:40:32,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:32,638 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:32,638 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:32,653 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (119)] Ended with exit code 0 [2022-01-18 15:40:32,838 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 119 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable239 [2022-01-18 15:40:32,838 INFO L402 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:32,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:32,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1605671587, now seen corresponding path program 89 times [2022-01-18 15:40:32,839 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:32,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191645564] [2022-01-18 15:40:32,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:32,839 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:33,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:33,065 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:33,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191645564] [2022-01-18 15:40:33,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191645564] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:33,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [190856264] [2022-01-18 15:40:33,065 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:40:33,065 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:33,066 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:33,066 INFO L229 MonitoredProcess]: Starting monitored process 120 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:33,067 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-01-18 15:40:33,092 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:40:33,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:33,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:40:33,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:33,465 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 112 treesize of output 96 [2022-01-18 15:40:33,999 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 120 [2022-01-18 15:40:34,001 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 120 treesize of output 102 [2022-01-18 15:40:34,405 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:34,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:34,650 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:34,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:35,094 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:40:35,094 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:40:35,096 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:40:35,132 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:35,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [190856264] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:35,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:35,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:40:35,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939442491] [2022-01-18 15:40:35,133 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:35,133 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:40:35,133 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:40:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:40:35,134 INFO L87 Difference]: Start difference. First operand 521 states and 1544 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:37,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:37,141 INFO L93 Difference]: Finished difference Result 761 states and 2186 transitions. [2022-01-18 15:40:37,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:40:37,141 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:37,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:37,142 INFO L225 Difference]: With dead ends: 761 [2022-01-18 15:40:37,142 INFO L226 Difference]: Without dead ends: 689 [2022-01-18 15:40:37,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=205, Invalid=1355, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:40:37,143 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 148 mSDsluCounter, 910 mSDsCounter, 0 mSdLazyCounter, 1209 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 425 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1209 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:37,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 425 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1209 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:40:37,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 689 states. [2022-01-18 15:40:37,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 689 to 508. [2022-01-18 15:40:37,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 2.9822485207100593) internal successors, (1512), 507 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:37,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1512 transitions. [2022-01-18 15:40:37,148 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1512 transitions. Word has length 20 [2022-01-18 15:40:37,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:37,149 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1512 transitions. [2022-01-18 15:40:37,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:37,149 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1512 transitions. [2022-01-18 15:40:37,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:37,149 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:37,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:37,165 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-01-18 15:40:37,350 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240,120 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:37,350 INFO L402 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:37,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash -595490201, now seen corresponding path program 90 times [2022-01-18 15:40:37,350 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:37,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374134555] [2022-01-18 15:40:37,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:37,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:37,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:37,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:37,570 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374134555] [2022-01-18 15:40:37,570 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374134555] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:37,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665268202] [2022-01-18 15:40:37,570 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:40:37,570 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:37,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:37,571 INFO L229 MonitoredProcess]: Starting monitored process 121 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:37,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Waiting until timeout for monitored process [2022-01-18 15:40:37,596 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:40:37,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:37,597 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:40:37,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:37,923 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:37,924 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:40:40,434 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:40,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 142 [2022-01-18 15:40:40,436 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 142 treesize of output 124 [2022-01-18 15:40:41,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:41,000 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:41,414 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:41,414 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:41,651 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:41,651 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:40:41,657 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:41,658 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:40:41,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:41,784 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665268202] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:41,784 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:41,784 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:41,784 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577049857] [2022-01-18 15:40:41,785 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:41,785 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:41,785 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:41,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:41,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:41,785 INFO L87 Difference]: Start difference. First operand 508 states and 1512 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:42,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:42,573 INFO L93 Difference]: Finished difference Result 665 states and 1967 transitions. [2022-01-18 15:40:42,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:40:42,574 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:42,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:42,575 INFO L225 Difference]: With dead ends: 665 [2022-01-18 15:40:42,575 INFO L226 Difference]: Without dead ends: 655 [2022-01-18 15:40:42,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=138, Invalid=1194, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:40:42,575 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 656 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 806 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 656 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 138 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:42,575 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 531 Invalid, 806 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 656 Invalid, 0 Unknown, 138 Unchecked, 0.3s Time] [2022-01-18 15:40:42,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2022-01-18 15:40:42,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 514. [2022-01-18 15:40:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 513 states have (on average 2.9844054580896686) internal successors, (1531), 513 states have internal predecessors, (1531), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 1531 transitions. [2022-01-18 15:40:42,581 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 1531 transitions. Word has length 20 [2022-01-18 15:40:42,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:42,581 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 1531 transitions. [2022-01-18 15:40:42,581 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:42,581 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 1531 transitions. [2022-01-18 15:40:42,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:42,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:42,582 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:42,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (121)] Forceful destruction successful, exit code 0 [2022-01-18 15:40:42,782 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241,121 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:42,782 INFO L402 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:42,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:42,783 INFO L85 PathProgramCache]: Analyzing trace with hash -784447321, now seen corresponding path program 91 times [2022-01-18 15:40:42,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:42,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989408456] [2022-01-18 15:40:42,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:42,783 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:43,080 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:43,080 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:43,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989408456] [2022-01-18 15:40:43,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989408456] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:43,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [954667723] [2022-01-18 15:40:43,080 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:40:43,080 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:43,080 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:43,081 INFO L229 MonitoredProcess]: Starting monitored process 122 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:43,082 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Waiting until timeout for monitored process [2022-01-18 15:40:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:43,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:40:43,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:43,417 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:43,418 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:40:45,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:45,762 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 137 [2022-01-18 15:40:45,764 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 119 [2022-01-18 15:40:46,261 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:46,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:46,715 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:46,715 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:47,059 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:47,060 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:40:47,066 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:47,066 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:40:47,219 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:47,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [954667723] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:47,219 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:47,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:47,219 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931842805] [2022-01-18 15:40:47,219 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:47,219 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:47,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:47,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:47,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:47,220 INFO L87 Difference]: Start difference. First operand 514 states and 1531 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:47,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:47,913 INFO L93 Difference]: Finished difference Result 647 states and 1915 transitions. [2022-01-18 15:40:47,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:40:47,914 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:47,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:47,915 INFO L225 Difference]: With dead ends: 647 [2022-01-18 15:40:47,915 INFO L226 Difference]: Without dead ends: 603 [2022-01-18 15:40:47,915 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=135, Invalid=1055, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:40:47,915 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 60 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 326 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:47,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 326 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 333 Invalid, 0 Unknown, 99 Unchecked, 0.1s Time] [2022-01-18 15:40:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 603 states. [2022-01-18 15:40:47,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 603 to 524. [2022-01-18 15:40:47,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 523 states have (on average 2.961759082217973) internal successors, (1549), 523 states have internal predecessors, (1549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:47,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 1549 transitions. [2022-01-18 15:40:47,921 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 1549 transitions. Word has length 20 [2022-01-18 15:40:47,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:47,921 INFO L470 AbstractCegarLoop]: Abstraction has 524 states and 1549 transitions. [2022-01-18 15:40:47,921 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:47,921 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 1549 transitions. [2022-01-18 15:40:47,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:47,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:47,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:47,936 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (122)] Ended with exit code 0 [2022-01-18 15:40:48,122 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242,122 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:48,122 INFO L402 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:48,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:48,122 INFO L85 PathProgramCache]: Analyzing trace with hash -1413928803, now seen corresponding path program 92 times [2022-01-18 15:40:48,122 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:48,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321908420] [2022-01-18 15:40:48,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:48,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:48,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:48,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:48,356 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321908420] [2022-01-18 15:40:48,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321908420] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:48,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85005089] [2022-01-18 15:40:48,356 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:40:48,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:48,357 INFO L229 MonitoredProcess]: Starting monitored process 123 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:48,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-01-18 15:40:48,381 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:40:48,381 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:48,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:40:48,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:48,677 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:48,677 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:40:51,743 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:51,744 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 145 [2022-01-18 15:40:51,746 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 125 [2022-01-18 15:40:52,244 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:52,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:52,647 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:52,647 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:52,914 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:52,914 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:40:52,920 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:52,921 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:40:53,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:53,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85005089] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:53,084 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:53,085 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:53,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161129114] [2022-01-18 15:40:53,085 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:53,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:53,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:53,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:53,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:53,085 INFO L87 Difference]: Start difference. First operand 524 states and 1549 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:54,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:40:54,178 INFO L93 Difference]: Finished difference Result 740 states and 2167 transitions. [2022-01-18 15:40:54,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 15:40:54,178 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:40:54,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:40:54,180 INFO L225 Difference]: With dead ends: 740 [2022-01-18 15:40:54,180 INFO L226 Difference]: Without dead ends: 734 [2022-01-18 15:40:54,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:40:54,180 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 74 mSDsluCounter, 897 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 1021 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 413 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:40:54,180 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 565 Invalid, 1021 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 605 Invalid, 0 Unknown, 413 Unchecked, 0.2s Time] [2022-01-18 15:40:54,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-18 15:40:54,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 549. [2022-01-18 15:40:54,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 548 states have (on average 2.958029197080292) internal successors, (1621), 548 states have internal predecessors, (1621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:54,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 1621 transitions. [2022-01-18 15:40:54,188 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 1621 transitions. Word has length 20 [2022-01-18 15:40:54,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:40:54,188 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 1621 transitions. [2022-01-18 15:40:54,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:40:54,189 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 1621 transitions. [2022-01-18 15:40:54,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:40:54,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:40:54,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:40:54,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Forceful destruction successful, exit code 0 [2022-01-18 15:40:54,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243,123 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:54,390 INFO L402 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:40:54,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:40:54,391 INFO L85 PathProgramCache]: Analyzing trace with hash 535754791, now seen corresponding path program 93 times [2022-01-18 15:40:54,391 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:40:54,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534211920] [2022-01-18 15:40:54,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:40:54,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:40:54,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:40:54,768 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:54,768 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:40:54,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534211920] [2022-01-18 15:40:54,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534211920] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:40:54,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515275398] [2022-01-18 15:40:54,768 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:40:54,769 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:40:54,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:40:54,770 INFO L229 MonitoredProcess]: Starting monitored process 124 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:40:54,771 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Waiting until timeout for monitored process [2022-01-18 15:40:54,801 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:40:54,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:40:54,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:40:54,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:40:55,127 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:55,128 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:40:57,062 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:40:57,062 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 151 [2022-01-18 15:40:57,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 131 [2022-01-18 15:40:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:58,143 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:40:58,592 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:58,594 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:40:58,844 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:58,844 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:40:58,851 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:40:58,851 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:40:58,985 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:40:58,985 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515275398] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:40:58,985 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:40:58,985 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:40:58,985 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [88424693] [2022-01-18 15:40:58,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:40:58,985 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:40:58,985 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:40:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:40:58,986 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:40:58,986 INFO L87 Difference]: Start difference. First operand 549 states and 1621 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:01,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:01,093 INFO L93 Difference]: Finished difference Result 919 states and 2651 transitions. [2022-01-18 15:41:01,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 15:41:01,094 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:01,095 INFO L225 Difference]: With dead ends: 919 [2022-01-18 15:41:01,095 INFO L226 Difference]: Without dead ends: 859 [2022-01-18 15:41:01,096 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=239, Invalid=1653, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 15:41:01,096 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 195 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 1212 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 195 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 536 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:01,096 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [195 Valid, 600 Invalid, 1783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1212 Invalid, 0 Unknown, 536 Unchecked, 0.6s Time] [2022-01-18 15:41:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2022-01-18 15:41:01,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 556. [2022-01-18 15:41:01,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 556 states, 555 states have (on average 2.971171171171171) internal successors, (1649), 555 states have internal predecessors, (1649), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:01,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 1649 transitions. [2022-01-18 15:41:01,103 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 1649 transitions. Word has length 20 [2022-01-18 15:41:01,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:01,103 INFO L470 AbstractCegarLoop]: Abstraction has 556 states and 1649 transitions. [2022-01-18 15:41:01,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:01,103 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 1649 transitions. [2022-01-18 15:41:01,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:01,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:01,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:01,126 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (124)] Forceful destruction successful, exit code 0 [2022-01-18 15:41:01,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable244 [2022-01-18 15:41:01,322 INFO L402 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:01,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:01,322 INFO L85 PathProgramCache]: Analyzing trace with hash 558351339, now seen corresponding path program 94 times [2022-01-18 15:41:01,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:01,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430399478] [2022-01-18 15:41:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:01,322 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:01,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:01,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430399478] [2022-01-18 15:41:01,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1430399478] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:01,541 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1289887574] [2022-01-18 15:41:01,541 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:41:01,541 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:01,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:01,542 INFO L229 MonitoredProcess]: Starting monitored process 125 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:01,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Waiting until timeout for monitored process [2022-01-18 15:41:01,566 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:41:01,566 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:01,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:41:01,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:01,921 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:01,922 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:04,143 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:04,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 197 treesize of output 173 [2022-01-18 15:41:04,146 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 149 [2022-01-18 15:41:05,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:05,303 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:05,730 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:05,730 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:41:05,969 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:05,969 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:41:05,976 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:05,976 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:41:06,112 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:06,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1289887574] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:06,112 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:06,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:06,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410521753] [2022-01-18 15:41:06,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:06,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:06,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:06,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:06,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:06,113 INFO L87 Difference]: Start difference. First operand 556 states and 1649 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:08,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:08,026 INFO L93 Difference]: Finished difference Result 805 states and 2396 transitions. [2022-01-18 15:41:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 15:41:08,027 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:08,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:08,028 INFO L225 Difference]: With dead ends: 805 [2022-01-18 15:41:08,028 INFO L226 Difference]: Without dead ends: 746 [2022-01-18 15:41:08,028 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=180, Invalid=1380, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:41:08,028 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 173 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 718 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 1041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 718 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:08,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [173 Valid, 451 Invalid, 1041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 718 Invalid, 0 Unknown, 280 Unchecked, 0.3s Time] [2022-01-18 15:41:08,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 746 states. [2022-01-18 15:41:08,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 746 to 570. [2022-01-18 15:41:08,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 569 states have (on average 2.9964850615114234) internal successors, (1705), 569 states have internal predecessors, (1705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:08,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 1705 transitions. [2022-01-18 15:41:08,036 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 1705 transitions. Word has length 20 [2022-01-18 15:41:08,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:08,036 INFO L470 AbstractCegarLoop]: Abstraction has 570 states and 1705 transitions. [2022-01-18 15:41:08,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:08,036 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 1705 transitions. [2022-01-18 15:41:08,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:08,037 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:08,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:08,053 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (125)] Forceful destruction successful, exit code 0 [2022-01-18 15:41:08,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 125 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable245 [2022-01-18 15:41:08,239 INFO L402 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash 1129806145, now seen corresponding path program 95 times [2022-01-18 15:41:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:08,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998360335] [2022-01-18 15:41:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:08,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:08,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:08,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:08,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998360335] [2022-01-18 15:41:08,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998360335] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:08,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2145757914] [2022-01-18 15:41:08,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:41:08,483 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:08,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:08,485 INFO L229 MonitoredProcess]: Starting monitored process 126 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:08,486 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-01-18 15:41:08,517 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:41:08,517 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:08,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:41:08,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:08,688 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:09,944 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 161 treesize of output 141 [2022-01-18 15:41:09,946 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 121 [2022-01-18 15:41:10,301 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:10,301 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:10,721 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:10,722 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:41:11,063 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:41:11,063 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 101 treesize of output 88 [2022-01-18 15:41:11,065 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 85 treesize of output 69 [2022-01-18 15:41:11,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:11,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2145757914] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:11,101 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:11,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:41:11,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306013615] [2022-01-18 15:41:11,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:11,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:41:11,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:11,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:41:11,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=675, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:41:11,102 INFO L87 Difference]: Start difference. First operand 570 states and 1705 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:14,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:14,165 INFO L93 Difference]: Finished difference Result 926 states and 2666 transitions. [2022-01-18 15:41:14,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:41:14,166 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:14,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:14,167 INFO L225 Difference]: With dead ends: 926 [2022-01-18 15:41:14,167 INFO L226 Difference]: Without dead ends: 875 [2022-01-18 15:41:14,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 128 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=198, Invalid=1062, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:41:14,167 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 206 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 1005 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 1038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 1005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:14,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 320 Invalid, 1038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 1005 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:41:14,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-01-18 15:41:14,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 580. [2022-01-18 15:41:14,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.989637305699482) internal successors, (1731), 579 states have internal predecessors, (1731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:14,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1731 transitions. [2022-01-18 15:41:14,175 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1731 transitions. Word has length 20 [2022-01-18 15:41:14,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:14,175 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1731 transitions. [2022-01-18 15:41:14,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:14,175 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1731 transitions. [2022-01-18 15:41:14,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:14,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:14,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:14,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-01-18 15:41:14,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 126 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable246 [2022-01-18 15:41:14,376 INFO L402 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:14,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:14,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1264634579, now seen corresponding path program 96 times [2022-01-18 15:41:14,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:14,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834991548] [2022-01-18 15:41:14,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:14,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:14,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:14,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:14,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834991548] [2022-01-18 15:41:14,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [834991548] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:14,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1210340543] [2022-01-18 15:41:14,598 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:41:14,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:14,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:14,599 INFO L229 MonitoredProcess]: Starting monitored process 127 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:14,600 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Waiting until timeout for monitored process [2022-01-18 15:41:14,626 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:41:14,626 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:14,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:41:14,627 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:14,947 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:14,947 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-01-18 15:41:17,623 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:17,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 165 [2022-01-18 15:41:17,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 143 [2022-01-18 15:41:18,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:18,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:18,480 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:18,480 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:41:18,747 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:18,747 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:41:18,754 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:18,754 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:41:18,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:18,871 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1210340543] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:18,871 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:18,871 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:18,871 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429306630] [2022-01-18 15:41:18,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:18,871 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:18,871 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:18,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:18,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:18,872 INFO L87 Difference]: Start difference. First operand 580 states and 1731 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:20,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:20,755 INFO L93 Difference]: Finished difference Result 1037 states and 2996 transitions. [2022-01-18 15:41:20,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 15:41:20,755 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:20,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:20,757 INFO L225 Difference]: With dead ends: 1037 [2022-01-18 15:41:20,757 INFO L226 Difference]: Without dead ends: 1021 [2022-01-18 15:41:20,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 27 SyntacticMatches, 2 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 427 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=248, Invalid=2302, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 15:41:20,757 INFO L933 BasicCegarLoop]: 42 mSDtfsCounter, 175 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 857 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 844 SdHoareTripleChecker+Invalid, 1480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 601 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:20,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [175 Valid, 844 Invalid, 1480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 857 Invalid, 0 Unknown, 601 Unchecked, 0.4s Time] [2022-01-18 15:41:20,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2022-01-18 15:41:20,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 617. [2022-01-18 15:41:20,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 617 states, 616 states have (on average 2.99025974025974) internal successors, (1842), 616 states have internal predecessors, (1842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:20,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 617 states to 617 states and 1842 transitions. [2022-01-18 15:41:20,766 INFO L78 Accepts]: Start accepts. Automaton has 617 states and 1842 transitions. Word has length 20 [2022-01-18 15:41:20,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:20,766 INFO L470 AbstractCegarLoop]: Abstraction has 617 states and 1842 transitions. [2022-01-18 15:41:20,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 617 states and 1842 transitions. [2022-01-18 15:41:20,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:20,767 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:20,767 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:20,783 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (127)] Ended with exit code 0 [2022-01-18 15:41:20,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247,127 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:20,968 INFO L402 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:20,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:20,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1453591699, now seen corresponding path program 97 times [2022-01-18 15:41:20,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:20,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [548960814] [2022-01-18 15:41:20,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:20,968 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:21,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:21,260 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:21,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [548960814] [2022-01-18 15:41:21,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [548960814] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:21,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108080045] [2022-01-18 15:41:21,260 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:41:21,260 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:21,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:21,261 INFO L229 MonitoredProcess]: Starting monitored process 128 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:21,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Waiting until timeout for monitored process [2022-01-18 15:41:21,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:21,288 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:41:21,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:21,562 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:21,563 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:23,625 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:23,625 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 150 treesize of output 132 [2022-01-18 15:41:23,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 132 treesize of output 114 [2022-01-18 15:41:24,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:24,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:24,567 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:24,568 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:41:24,894 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:24,894 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:41:24,900 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:24,900 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:41:25,060 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:25,060 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108080045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:25,060 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:25,061 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:25,061 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255993808] [2022-01-18 15:41:25,061 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:25,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:25,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:25,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:25,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:25,061 INFO L87 Difference]: Start difference. First operand 617 states and 1842 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:25,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:25,929 INFO L93 Difference]: Finished difference Result 798 states and 2340 transitions. [2022-01-18 15:41:25,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 15:41:25,929 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:25,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:25,930 INFO L225 Difference]: With dead ends: 798 [2022-01-18 15:41:25,930 INFO L226 Difference]: Without dead ends: 784 [2022-01-18 15:41:25,931 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 180 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=176, Invalid=1306, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:41:25,931 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 113 mSDsluCounter, 639 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 305 SdHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 494 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:25,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 305 Invalid, 791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 297 Invalid, 0 Unknown, 494 Unchecked, 0.1s Time] [2022-01-18 15:41:25,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 784 states. [2022-01-18 15:41:25,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 784 to 616. [2022-01-18 15:41:25,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 3.004878048780488) internal successors, (1848), 615 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1848 transitions. [2022-01-18 15:41:25,939 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1848 transitions. Word has length 20 [2022-01-18 15:41:25,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:25,939 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1848 transitions. [2022-01-18 15:41:25,939 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1848 transitions. [2022-01-18 15:41:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:25,940 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:25,940 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:25,960 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (128)] Ended with exit code 0 [2022-01-18 15:41:26,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248,128 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:26,155 INFO L402 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:26,155 INFO L85 PathProgramCache]: Analyzing trace with hash -617139305, now seen corresponding path program 98 times [2022-01-18 15:41:26,155 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:26,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802270417] [2022-01-18 15:41:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:26,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:26,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:26,367 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:26,367 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:26,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802270417] [2022-01-18 15:41:26,367 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802270417] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:26,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873971946] [2022-01-18 15:41:26,367 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:41:26,367 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:26,367 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:26,369 INFO L229 MonitoredProcess]: Starting monitored process 129 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:26,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-01-18 15:41:26,394 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:41:26,394 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:26,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 15:41:26,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:26,630 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:26,631 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-01-18 15:41:28,199 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:28,200 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 190 treesize of output 162 [2022-01-18 15:41:28,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 134 [2022-01-18 15:41:28,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:28,957 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:29,648 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:29,648 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 165 treesize of output 149 [2022-01-18 15:41:29,950 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:29,951 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 107 [2022-01-18 15:41:29,956 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:29,956 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 99 treesize of output 89 [2022-01-18 15:41:30,076 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:30,076 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873971946] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:30,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:30,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:30,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448198175] [2022-01-18 15:41:30,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:30,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:30,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:30,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:30,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:30,077 INFO L87 Difference]: Start difference. First operand 616 states and 1848 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:31,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:31,256 INFO L93 Difference]: Finished difference Result 748 states and 2213 transitions. [2022-01-18 15:41:31,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:41:31,257 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:31,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:31,258 INFO L225 Difference]: With dead ends: 748 [2022-01-18 15:41:31,258 INFO L226 Difference]: Without dead ends: 734 [2022-01-18 15:41:31,258 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=159, Invalid=1247, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:41:31,258 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 81 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 773 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:31,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [81 Valid, 345 Invalid, 773 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 581 Invalid, 0 Unknown, 179 Unchecked, 0.3s Time] [2022-01-18 15:41:31,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2022-01-18 15:41:31,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 616. [2022-01-18 15:41:31,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 615 states have (on average 3.004878048780488) internal successors, (1848), 615 states have internal predecessors, (1848), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:31,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 1848 transitions. [2022-01-18 15:41:31,265 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 1848 transitions. Word has length 20 [2022-01-18 15:41:31,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:31,265 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 1848 transitions. [2022-01-18 15:41:31,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:31,265 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 1848 transitions. [2022-01-18 15:41:31,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:31,266 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:31,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:31,282 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-01-18 15:41:31,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable249 [2022-01-18 15:41:31,467 INFO L402 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:31,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:31,467 INFO L85 PathProgramCache]: Analyzing trace with hash -410793333, now seen corresponding path program 99 times [2022-01-18 15:41:31,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:31,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156247796] [2022-01-18 15:41:31,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:31,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:31,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:31,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:31,707 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:31,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156247796] [2022-01-18 15:41:31,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156247796] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:31,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [576626668] [2022-01-18 15:41:31,707 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:41:31,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:31,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:31,708 INFO L229 MonitoredProcess]: Starting monitored process 130 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:31,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Waiting until timeout for monitored process [2022-01-18 15:41:31,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:41:31,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:31,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:41:31,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:32,016 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:32,017 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-01-18 15:41:34,070 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:34,070 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 125 [2022-01-18 15:41:34,072 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 125 treesize of output 107 [2022-01-18 15:41:34,496 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:34,496 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:34,979 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:34,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:41:35,250 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:35,250 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:41:35,256 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:35,256 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:41:35,427 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:35,427 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [576626668] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:35,427 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:35,427 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:35,427 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074758102] [2022-01-18 15:41:35,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:35,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:35,428 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:35,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:35,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:35,428 INFO L87 Difference]: Start difference. First operand 616 states and 1848 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:36,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:36,609 INFO L93 Difference]: Finished difference Result 864 states and 2504 transitions. [2022-01-18 15:41:36,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:41:36,610 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:36,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:36,611 INFO L225 Difference]: With dead ends: 864 [2022-01-18 15:41:36,611 INFO L226 Difference]: Without dead ends: 851 [2022-01-18 15:41:36,611 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=172, Invalid=1468, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:41:36,612 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 91 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 179 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:36,612 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 549 Invalid, 757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 559 Invalid, 0 Unknown, 179 Unchecked, 0.2s Time] [2022-01-18 15:41:36,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2022-01-18 15:41:36,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 626. [2022-01-18 15:41:36,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 626 states, 625 states have (on average 3.0) internal successors, (1875), 625 states have internal predecessors, (1875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:36,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 1875 transitions. [2022-01-18 15:41:36,620 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 1875 transitions. Word has length 20 [2022-01-18 15:41:36,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:36,620 INFO L470 AbstractCegarLoop]: Abstraction has 626 states and 1875 transitions. [2022-01-18 15:41:36,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:36,620 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 1875 transitions. [2022-01-18 15:41:36,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:36,620 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:36,621 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:36,636 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (130)] Ended with exit code 0 [2022-01-18 15:41:36,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250,130 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:36,821 INFO L402 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:36,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:36,821 INFO L85 PathProgramCache]: Analyzing trace with hash -599750453, now seen corresponding path program 100 times [2022-01-18 15:41:36,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:36,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870769983] [2022-01-18 15:41:36,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:36,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:37,035 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:37,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870769983] [2022-01-18 15:41:37,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870769983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098540547] [2022-01-18 15:41:37,036 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:41:37,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:37,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:37,037 INFO L229 MonitoredProcess]: Starting monitored process 131 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:37,037 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Waiting until timeout for monitored process [2022-01-18 15:41:37,062 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:41:37,062 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:37,063 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:41:37,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:37,407 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:37,408 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:39,606 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:39,607 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 145 [2022-01-18 15:41:39,609 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 145 treesize of output 125 [2022-01-18 15:41:40,069 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:40,069 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:40,458 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:40,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:41:40,711 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:40,711 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:41:40,718 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:40,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:41:40,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:40,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098540547] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:40,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:40,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:40,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223163036] [2022-01-18 15:41:40,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:40,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:40,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:40,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:40,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:40,846 INFO L87 Difference]: Start difference. First operand 626 states and 1875 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:42,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:42,042 INFO L93 Difference]: Finished difference Result 856 states and 2493 transitions. [2022-01-18 15:41:42,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:41:42,042 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:42,043 INFO L225 Difference]: With dead ends: 856 [2022-01-18 15:41:42,043 INFO L226 Difference]: Without dead ends: 797 [2022-01-18 15:41:42,044 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 26 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=164, Invalid=1396, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:41:42,044 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 95 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 127 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:42,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 453 Invalid, 749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 605 Invalid, 0 Unknown, 127 Unchecked, 0.3s Time] [2022-01-18 15:41:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-18 15:41:42,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 642. [2022-01-18 15:41:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 641 states have (on average 2.9719188767550704) internal successors, (1905), 641 states have internal predecessors, (1905), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 1905 transitions. [2022-01-18 15:41:42,051 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 1905 transitions. Word has length 20 [2022-01-18 15:41:42,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:42,051 INFO L470 AbstractCegarLoop]: Abstraction has 642 states and 1905 transitions. [2022-01-18 15:41:42,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:42,051 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 1905 transitions. [2022-01-18 15:41:42,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:42,052 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:42,052 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:42,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (131)] Ended with exit code 0 [2022-01-18 15:41:42,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251,131 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:42,252 INFO L402 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:42,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:42,253 INFO L85 PathProgramCache]: Analyzing trace with hash -1229231935, now seen corresponding path program 101 times [2022-01-18 15:41:42,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:42,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551848193] [2022-01-18 15:41:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:42,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:42,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:42,483 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:42,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551848193] [2022-01-18 15:41:42,483 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551848193] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:42,483 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206646443] [2022-01-18 15:41:42,483 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:41:42,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:42,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:42,485 INFO L229 MonitoredProcess]: Starting monitored process 132 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:42,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-01-18 15:41:42,513 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 15:41:42,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:42,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:41:42,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:42,650 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:43,897 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 159 treesize of output 139 [2022-01-18 15:41:43,899 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 139 treesize of output 119 [2022-01-18 15:41:44,407 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:44,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:44,792 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:44,792 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-01-18 15:41:45,041 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:41:45,041 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 95 [2022-01-18 15:41:45,043 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 74 [2022-01-18 15:41:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:45,099 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206646443] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:45,099 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:45,099 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:41:45,099 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328518204] [2022-01-18 15:41:45,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:45,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:41:45,100 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:45,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:41:45,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:41:45,100 INFO L87 Difference]: Start difference. First operand 642 states and 1905 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:50,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:50,529 INFO L93 Difference]: Finished difference Result 1242 states and 3511 transitions. [2022-01-18 15:41:50,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 15:41:50,529 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:50,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:50,531 INFO L225 Difference]: With dead ends: 1242 [2022-01-18 15:41:50,531 INFO L226 Difference]: Without dead ends: 1122 [2022-01-18 15:41:50,531 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=386, Invalid=1870, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 15:41:50,531 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 321 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 1783 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:50,531 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [321 Valid, 544 Invalid, 1839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1783 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 15:41:50,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2022-01-18 15:41:50,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 622. [2022-01-18 15:41:50,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 621 states have (on average 3.0080515297906603) internal successors, (1868), 621 states have internal predecessors, (1868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:50,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 1868 transitions. [2022-01-18 15:41:50,539 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 1868 transitions. Word has length 20 [2022-01-18 15:41:50,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:50,539 INFO L470 AbstractCegarLoop]: Abstraction has 622 states and 1868 transitions. [2022-01-18 15:41:50,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:50,540 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 1868 transitions. [2022-01-18 15:41:50,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:50,540 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:50,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:50,556 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-01-18 15:41:50,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252,132 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:50,741 INFO L402 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:50,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash -443781239, now seen corresponding path program 102 times [2022-01-18 15:41:50,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:50,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808578672] [2022-01-18 15:41:50,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:50,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:50,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:50,992 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:50,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:50,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808578672] [2022-01-18 15:41:50,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808578672] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:50,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669213592] [2022-01-18 15:41:50,992 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:41:50,992 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:50,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:50,993 INFO L229 MonitoredProcess]: Starting monitored process 133 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:50,994 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Waiting until timeout for monitored process [2022-01-18 15:41:51,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 15:41:51,019 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:41:51,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:41:51,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:51,289 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:51,289 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:52,733 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:52,734 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 153 [2022-01-18 15:41:52,737 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 131 [2022-01-18 15:41:53,560 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:53,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:54,149 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:54,149 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 92 treesize of output 84 [2022-01-18 15:41:54,479 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:54,479 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:41:54,485 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:54,485 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 94 [2022-01-18 15:41:54,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:54,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669213592] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:41:54,608 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:41:54,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:41:54,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160812911] [2022-01-18 15:41:54,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:41:54,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:41:54,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:41:54,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:41:54,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=632, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:41:54,608 INFO L87 Difference]: Start difference. First operand 622 states and 1868 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:55,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:41:55,991 INFO L93 Difference]: Finished difference Result 805 states and 2417 transitions. [2022-01-18 15:41:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 15:41:55,991 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:41:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:41:55,993 INFO L225 Difference]: With dead ends: 805 [2022-01-18 15:41:55,993 INFO L226 Difference]: Without dead ends: 760 [2022-01-18 15:41:55,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=177, Invalid=1545, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:41:55,993 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 117 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 1046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 403 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:41:55,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 500 Invalid, 1046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 616 Invalid, 0 Unknown, 403 Unchecked, 0.3s Time] [2022-01-18 15:41:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 760 states. [2022-01-18 15:41:55,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 760 to 634. [2022-01-18 15:41:55,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 634 states, 633 states have (on average 3.0173775671406005) internal successors, (1910), 633 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:56,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 634 states to 634 states and 1910 transitions. [2022-01-18 15:41:56,000 INFO L78 Accepts]: Start accepts. Automaton has 634 states and 1910 transitions. Word has length 20 [2022-01-18 15:41:56,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:41:56,000 INFO L470 AbstractCegarLoop]: Abstraction has 634 states and 1910 transitions. [2022-01-18 15:41:56,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:41:56,000 INFO L276 IsEmpty]: Start isEmpty. Operand 634 states and 1910 transitions. [2022-01-18 15:41:56,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:41:56,000 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:41:56,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:41:56,016 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (133)] Ended with exit code 0 [2022-01-18 15:41:56,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 133 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable253 [2022-01-18 15:41:56,201 INFO L402 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:41:56,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:41:56,201 INFO L85 PathProgramCache]: Analyzing trace with hash 846600581, now seen corresponding path program 103 times [2022-01-18 15:41:56,202 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:41:56,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138480000] [2022-01-18 15:41:56,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:41:56,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:41:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:56,408 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:56,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:41:56,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138480000] [2022-01-18 15:41:56,408 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [138480000] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:41:56,408 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817487414] [2022-01-18 15:41:56,408 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:41:56,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:41:56,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:41:56,409 INFO L229 MonitoredProcess]: Starting monitored process 134 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:41:56,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Waiting until timeout for monitored process [2022-01-18 15:41:56,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:41:56,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:41:56,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:41:56,698 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:56,699 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:41:58,235 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:41:58,236 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 158 [2022-01-18 15:41:58,238 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 132 [2022-01-18 15:41:59,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:41:59,136 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:41:59,723 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:41:59,724 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:42:00,039 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:00,039 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:42:00,045 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:00,045 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:42:00,191 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:00,191 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817487414] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:00,191 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:00,191 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:00,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464826860] [2022-01-18 15:42:00,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:00,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:00,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:00,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:00,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:00,192 INFO L87 Difference]: Start difference. First operand 634 states and 1910 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:01,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:01,501 INFO L93 Difference]: Finished difference Result 906 states and 2741 transitions. [2022-01-18 15:42:01,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 15:42:01,502 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:01,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:01,503 INFO L225 Difference]: With dead ends: 906 [2022-01-18 15:42:01,503 INFO L226 Difference]: Without dead ends: 832 [2022-01-18 15:42:01,503 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=164, Invalid=1476, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:42:01,503 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 134 mSDsluCounter, 1123 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 608 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:01,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 658 Invalid, 1791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1155 Invalid, 0 Unknown, 608 Unchecked, 0.5s Time] [2022-01-18 15:42:01,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 832 states. [2022-01-18 15:42:01,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 832 to 652. [2022-01-18 15:42:01,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 652 states, 651 states have (on average 3.035330261136713) internal successors, (1976), 651 states have internal predecessors, (1976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:01,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 652 states to 652 states and 1976 transitions. [2022-01-18 15:42:01,510 INFO L78 Accepts]: Start accepts. Automaton has 652 states and 1976 transitions. Word has length 20 [2022-01-18 15:42:01,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:01,511 INFO L470 AbstractCegarLoop]: Abstraction has 652 states and 1976 transitions. [2022-01-18 15:42:01,511 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:01,511 INFO L276 IsEmpty]: Start isEmpty. Operand 652 states and 1976 transitions. [2022-01-18 15:42:01,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:01,515 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:01,515 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:01,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (134)] Forceful destruction successful, exit code 0 [2022-01-18 15:42:01,716 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 134 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable254 [2022-01-18 15:42:01,716 INFO L402 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:01,717 INFO L85 PathProgramCache]: Analyzing trace with hash 1917060185, now seen corresponding path program 104 times [2022-01-18 15:42:01,717 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:01,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367771631] [2022-01-18 15:42:01,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:01,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:01,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:01,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:01,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367771631] [2022-01-18 15:42:01,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367771631] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801830131] [2022-01-18 15:42:01,966 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:42:01,966 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:01,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:01,972 INFO L229 MonitoredProcess]: Starting monitored process 135 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:01,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-01-18 15:42:02,003 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:42:02,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:02,004 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:42:02,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:02,328 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:02,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:42:03,599 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:03,600 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 118 [2022-01-18 15:42:03,601 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 118 treesize of output 100 [2022-01-18 15:42:04,075 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:04,075 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:04,726 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:04,727 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 166 treesize of output 148 [2022-01-18 15:42:04,960 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:04,960 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 114 [2022-01-18 15:42:04,966 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:04,966 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 94 [2022-01-18 15:42:05,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:05,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801830131] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:05,100 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:05,100 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:05,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684191871] [2022-01-18 15:42:05,101 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:05,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:05,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:05,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:05,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:05,102 INFO L87 Difference]: Start difference. First operand 652 states and 1976 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:05,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:05,753 INFO L93 Difference]: Finished difference Result 744 states and 2281 transitions. [2022-01-18 15:42:05,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:42:05,754 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:05,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:05,756 INFO L225 Difference]: With dead ends: 744 [2022-01-18 15:42:05,756 INFO L226 Difference]: Without dead ends: 729 [2022-01-18 15:42:05,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=134, Invalid=1056, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:42:05,756 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 525 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 85 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:05,756 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 333 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 525 Invalid, 0 Unknown, 85 Unchecked, 0.2s Time] [2022-01-18 15:42:05,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2022-01-18 15:42:05,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 660. [2022-01-18 15:42:05,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.031866464339909) internal successors, (1998), 659 states have internal predecessors, (1998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:05,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 1998 transitions. [2022-01-18 15:42:05,765 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 1998 transitions. Word has length 20 [2022-01-18 15:42:05,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:05,765 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 1998 transitions. [2022-01-18 15:42:05,765 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:05,765 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 1998 transitions. [2022-01-18 15:42:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:05,766 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:05,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:05,781 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-01-18 15:42:05,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable255 [2022-01-18 15:42:05,971 INFO L402 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:05,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:05,972 INFO L85 PathProgramCache]: Analyzing trace with hash 861735059, now seen corresponding path program 105 times [2022-01-18 15:42:05,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:05,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [411949453] [2022-01-18 15:42:05,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:05,972 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:05,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:06,177 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:06,178 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:06,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [411949453] [2022-01-18 15:42:06,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [411949453] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:06,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017256782] [2022-01-18 15:42:06,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:42:06,178 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:06,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:06,179 INFO L229 MonitoredProcess]: Starting monitored process 136 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:06,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Waiting until timeout for monitored process [2022-01-18 15:42:06,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 15:42:06,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:06,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:42:06,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:06,526 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:06,526 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-01-18 15:42:08,616 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:08,617 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 136 [2022-01-18 15:42:08,619 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 136 treesize of output 116 [2022-01-18 15:42:09,061 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:09,061 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:09,549 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:09,550 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:42:09,818 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:09,819 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:42:09,825 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:09,825 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:42:09,969 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:09,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017256782] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:09,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:09,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:09,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [149208227] [2022-01-18 15:42:09,970 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:09,970 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:09,970 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:09,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:09,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:09,971 INFO L87 Difference]: Start difference. First operand 660 states and 1998 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:10,835 INFO L93 Difference]: Finished difference Result 797 states and 2409 transitions. [2022-01-18 15:42:10,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:42:10,835 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:10,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:10,836 INFO L225 Difference]: With dead ends: 797 [2022-01-18 15:42:10,836 INFO L226 Difference]: Without dead ends: 735 [2022-01-18 15:42:10,837 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 179 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=142, Invalid=1264, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:42:10,837 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 105 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 815 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 450 SdHoareTripleChecker+Invalid, 1224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 815 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 393 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:10,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 450 Invalid, 1224 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 815 Invalid, 0 Unknown, 393 Unchecked, 0.3s Time] [2022-01-18 15:42:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-01-18 15:42:10,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 656. [2022-01-18 15:42:10,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 655 states have (on average 3.03206106870229) internal successors, (1986), 655 states have internal predecessors, (1986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:10,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 1986 transitions. [2022-01-18 15:42:10,843 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 1986 transitions. Word has length 20 [2022-01-18 15:42:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:10,844 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 1986 transitions. [2022-01-18 15:42:10,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:10,844 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 1986 transitions. [2022-01-18 15:42:10,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:10,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:10,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:10,860 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (136)] Ended with exit code 0 [2022-01-18 15:42:11,045 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 136 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable256 [2022-01-18 15:42:11,045 INFO L402 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:11,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:11,045 INFO L85 PathProgramCache]: Analyzing trace with hash -40928793, now seen corresponding path program 106 times [2022-01-18 15:42:11,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:11,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741853168] [2022-01-18 15:42:11,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:11,046 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:11,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:11,252 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:11,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:11,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741853168] [2022-01-18 15:42:11,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741853168] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:11,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217144994] [2022-01-18 15:42:11,252 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:42:11,253 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:11,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:11,253 INFO L229 MonitoredProcess]: Starting monitored process 137 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:11,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Waiting until timeout for monitored process [2022-01-18 15:42:11,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:42:11,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:11,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:42:11,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:11,555 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:11,556 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:42:12,389 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:12,390 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 158 [2022-01-18 15:42:12,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 132 [2022-01-18 15:42:13,485 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:13,486 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:14,339 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:14,339 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:42:14,680 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:14,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:42:14,687 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:14,687 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:42:14,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:14,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217144994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:14,835 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:14,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:14,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146301972] [2022-01-18 15:42:14,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:14,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:14,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:14,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:14,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:14,836 INFO L87 Difference]: Start difference. First operand 656 states and 1986 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:15,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:15,634 INFO L93 Difference]: Finished difference Result 778 states and 2368 transitions. [2022-01-18 15:42:15,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:42:15,634 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:15,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:15,635 INFO L225 Difference]: With dead ends: 778 [2022-01-18 15:42:15,635 INFO L226 Difference]: Without dead ends: 763 [2022-01-18 15:42:15,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=141, Invalid=1049, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:42:15,635 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 700 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 226 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:15,635 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 202 Invalid, 700 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 453 Invalid, 0 Unknown, 226 Unchecked, 0.2s Time] [2022-01-18 15:42:15,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 763 states. [2022-01-18 15:42:15,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 763 to 660. [2022-01-18 15:42:15,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 660 states, 659 states have (on average 3.0440060698027316) internal successors, (2006), 659 states have internal predecessors, (2006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:15,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 660 states to 660 states and 2006 transitions. [2022-01-18 15:42:15,642 INFO L78 Accepts]: Start accepts. Automaton has 660 states and 2006 transitions. Word has length 20 [2022-01-18 15:42:15,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:15,643 INFO L470 AbstractCegarLoop]: Abstraction has 660 states and 2006 transitions. [2022-01-18 15:42:15,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:15,643 INFO L276 IsEmpty]: Start isEmpty. Operand 660 states and 2006 transitions. [2022-01-18 15:42:15,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:15,643 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:15,643 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:15,659 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (137)] Ended with exit code 0 [2022-01-18 15:42:15,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable257 [2022-01-18 15:42:15,844 INFO L402 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:15,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:15,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1944022027, now seen corresponding path program 107 times [2022-01-18 15:42:15,844 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:15,844 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948105821] [2022-01-18 15:42:15,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:15,844 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:15,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:16,111 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:16,112 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:16,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948105821] [2022-01-18 15:42:16,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948105821] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:16,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [992263189] [2022-01-18 15:42:16,112 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:42:16,112 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:16,112 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:16,113 INFO L229 MonitoredProcess]: Starting monitored process 138 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:16,114 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-01-18 15:42:16,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 15:42:16,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:16,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:42:16,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:16,313 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-01-18 15:42:16,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 156 [2022-01-18 15:42:16,720 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 134 [2022-01-18 15:42:17,765 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:17,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:18,575 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:18,576 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 119 treesize of output 109 [2022-01-18 15:42:18,987 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:42:18,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 94 [2022-01-18 15:42:18,989 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 91 treesize of output 73 [2022-01-18 15:42:19,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:19,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [992263189] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:19,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:19,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:42:19,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370770396] [2022-01-18 15:42:19,038 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:19,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:42:19,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:19,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:42:19,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:42:19,038 INFO L87 Difference]: Start difference. First operand 660 states and 2006 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:24,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:24,974 INFO L93 Difference]: Finished difference Result 1433 states and 4098 transitions. [2022-01-18 15:42:24,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-01-18 15:42:24,974 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:24,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:24,976 INFO L225 Difference]: With dead ends: 1433 [2022-01-18 15:42:24,976 INFO L226 Difference]: Without dead ends: 1373 [2022-01-18 15:42:24,977 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=532, Invalid=2548, Unknown=0, NotChecked=0, Total=3080 [2022-01-18 15:42:24,977 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 381 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1568 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:24,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 481 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 15:42:24,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2022-01-18 15:42:24,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 672. [2022-01-18 15:42:24,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 3.0804769001490313) internal successors, (2067), 671 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:24,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2067 transitions. [2022-01-18 15:42:24,987 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2067 transitions. Word has length 20 [2022-01-18 15:42:24,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:24,987 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 2067 transitions. [2022-01-18 15:42:24,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:24,987 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2067 transitions. [2022-01-18 15:42:24,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:24,988 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:24,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:25,003 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Ended with exit code 0 [2022-01-18 15:42:25,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 138 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable258 [2022-01-18 15:42:25,189 INFO L402 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:25,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:25,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1229548317, now seen corresponding path program 108 times [2022-01-18 15:42:25,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:25,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491966540] [2022-01-18 15:42:25,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:25,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:25,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:25,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491966540] [2022-01-18 15:42:25,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491966540] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:25,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1560944496] [2022-01-18 15:42:25,407 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:42:25,407 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:25,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:25,408 INFO L229 MonitoredProcess]: Starting monitored process 139 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:25,408 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Waiting until timeout for monitored process [2022-01-18 15:42:25,434 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:42:25,435 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:25,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:42:25,436 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:25,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:25,795 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 121 treesize of output 103 [2022-01-18 15:42:26,678 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:26,678 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 144 [2022-01-18 15:42:26,681 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 122 [2022-01-18 15:42:28,050 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:28,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:28,666 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:28,666 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 15:42:29,004 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:29,005 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-01-18 15:42:29,011 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:29,011 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 101 [2022-01-18 15:42:29,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:29,210 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1560944496] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:29,210 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:29,210 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:29,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544861460] [2022-01-18 15:42:29,211 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:29,211 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:29,211 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:29,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:29,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=624, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:29,211 INFO L87 Difference]: Start difference. First operand 672 states and 2067 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:30,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:30,272 INFO L93 Difference]: Finished difference Result 797 states and 2431 transitions. [2022-01-18 15:42:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:42:30,272 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:30,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:30,274 INFO L225 Difference]: With dead ends: 797 [2022-01-18 15:42:30,274 INFO L226 Difference]: Without dead ends: 782 [2022-01-18 15:42:30,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=153, Invalid=1107, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:42:30,274 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 111 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 643 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 643 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 280 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:30,274 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 292 Invalid, 957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 643 Invalid, 0 Unknown, 280 Unchecked, 0.3s Time] [2022-01-18 15:42:30,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2022-01-18 15:42:30,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 672. [2022-01-18 15:42:30,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 672 states, 671 states have (on average 3.0804769001490313) internal successors, (2067), 671 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 672 states to 672 states and 2067 transitions. [2022-01-18 15:42:30,281 INFO L78 Accepts]: Start accepts. Automaton has 672 states and 2067 transitions. Word has length 20 [2022-01-18 15:42:30,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:30,281 INFO L470 AbstractCegarLoop]: Abstraction has 672 states and 2067 transitions. [2022-01-18 15:42:30,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:30,281 INFO L276 IsEmpty]: Start isEmpty. Operand 672 states and 2067 transitions. [2022-01-18 15:42:30,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:30,282 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:30,282 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:30,297 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (139)] Ended with exit code 0 [2022-01-18 15:42:30,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 139 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable259 [2022-01-18 15:42:30,482 INFO L402 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:30,483 INFO L85 PathProgramCache]: Analyzing trace with hash 2105278311, now seen corresponding path program 109 times [2022-01-18 15:42:30,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:30,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667194869] [2022-01-18 15:42:30,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:30,483 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:30,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:30,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:30,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:30,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667194869] [2022-01-18 15:42:30,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667194869] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:30,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252191045] [2022-01-18 15:42:30,827 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:42:30,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:30,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:30,828 INFO L229 MonitoredProcess]: Starting monitored process 140 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:30,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Waiting until timeout for monitored process [2022-01-18 15:42:30,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:30,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:42:30,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:31,183 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:31,183 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:42:32,029 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:32,029 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 154 [2022-01-18 15:42:32,032 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 130 [2022-01-18 15:42:33,167 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:33,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:33,909 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:33,910 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:42:34,246 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:34,246 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:42:34,252 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:34,253 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:42:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:34,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252191045] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:34,387 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:34,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:34,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620908031] [2022-01-18 15:42:34,387 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:34,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:34,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:34,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:34,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:34,388 INFO L87 Difference]: Start difference. First operand 672 states and 2067 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:35,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:35,790 INFO L93 Difference]: Finished difference Result 853 states and 2568 transitions. [2022-01-18 15:42:35,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:42:35,790 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:35,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:35,791 INFO L225 Difference]: With dead ends: 853 [2022-01-18 15:42:35,791 INFO L226 Difference]: Without dead ends: 809 [2022-01-18 15:42:35,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=149, Invalid=1183, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:42:35,792 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 89 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 34 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:35,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 271 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 588 Invalid, 0 Unknown, 34 Unchecked, 0.3s Time] [2022-01-18 15:42:35,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2022-01-18 15:42:35,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 675. [2022-01-18 15:42:35,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 3.091988130563798) internal successors, (2084), 674 states have internal predecessors, (2084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:35,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 2084 transitions. [2022-01-18 15:42:35,799 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 2084 transitions. Word has length 20 [2022-01-18 15:42:35,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:35,799 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 2084 transitions. [2022-01-18 15:42:35,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:35,799 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 2084 transitions. [2022-01-18 15:42:35,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:35,800 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:35,800 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:35,816 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (140)] Forceful destruction successful, exit code 0 [2022-01-18 15:42:36,000 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 140 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable260 [2022-01-18 15:42:36,000 INFO L402 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:36,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:36,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2139918517, now seen corresponding path program 110 times [2022-01-18 15:42:36,001 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:36,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909588351] [2022-01-18 15:42:36,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:36,001 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:36,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:36,206 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:36,206 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:36,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909588351] [2022-01-18 15:42:36,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909588351] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:36,206 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2111051422] [2022-01-18 15:42:36,206 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:42:36,206 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:36,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:36,207 INFO L229 MonitoredProcess]: Starting monitored process 141 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:36,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-01-18 15:42:36,232 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:42:36,232 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:36,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:42:36,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:36,553 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:36,553 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:42:37,455 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:37,456 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 156 [2022-01-18 15:42:37,458 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 156 treesize of output 132 [2022-01-18 15:42:38,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:38,719 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:39,348 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:39,348 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 15:42:39,697 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:39,697 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 133 treesize of output 121 [2022-01-18 15:42:39,704 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:39,704 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 101 [2022-01-18 15:42:39,909 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:39,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2111051422] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:39,909 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:39,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:39,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652470332] [2022-01-18 15:42:39,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:39,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:39,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:39,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:39,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:39,910 INFO L87 Difference]: Start difference. First operand 675 states and 2084 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:41,166 INFO L93 Difference]: Finished difference Result 848 states and 2585 transitions. [2022-01-18 15:42:41,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:42:41,166 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:41,167 INFO L225 Difference]: With dead ends: 848 [2022-01-18 15:42:41,167 INFO L226 Difference]: Without dead ends: 789 [2022-01-18 15:42:41,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=150, Invalid=1256, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:42:41,168 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 71 mSDsluCounter, 626 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 390 SdHoareTripleChecker+Invalid, 930 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 45 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:41,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 390 Invalid, 930 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 845 Invalid, 0 Unknown, 45 Unchecked, 0.4s Time] [2022-01-18 15:42:41,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 789 states. [2022-01-18 15:42:41,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 789 to 676. [2022-01-18 15:42:41,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 675 states have (on average 3.096296296296296) internal successors, (2090), 675 states have internal predecessors, (2090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:41,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 2090 transitions. [2022-01-18 15:42:41,175 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 2090 transitions. Word has length 20 [2022-01-18 15:42:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:41,175 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 2090 transitions. [2022-01-18 15:42:41,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 2090 transitions. [2022-01-18 15:42:41,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:41,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:41,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:41,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-01-18 15:42:41,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261,141 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:41,376 INFO L402 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:41,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:41,376 INFO L85 PathProgramCache]: Analyzing trace with hash 984947383, now seen corresponding path program 111 times [2022-01-18 15:42:41,376 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:41,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481586449] [2022-01-18 15:42:41,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:41,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:41,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:41,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:41,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481586449] [2022-01-18 15:42:41,597 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481586449] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:41,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859951434] [2022-01-18 15:42:41,597 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:42:41,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:41,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:41,599 INFO L229 MonitoredProcess]: Starting monitored process 142 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:41,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Waiting until timeout for monitored process [2022-01-18 15:42:41,624 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:42:41,624 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:41,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:42:41,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:41,915 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:41,916 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:42:43,608 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:43,608 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 153 [2022-01-18 15:42:43,611 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 131 [2022-01-18 15:42:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:44,812 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:45,269 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:45,270 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:42:45,529 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:45,529 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:42:45,536 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:45,536 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:42:45,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:45,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859951434] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:45,649 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:45,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:45,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073282565] [2022-01-18 15:42:45,649 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:45,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:45,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:45,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:45,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:45,649 INFO L87 Difference]: Start difference. First operand 676 states and 2090 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:46,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:46,945 INFO L93 Difference]: Finished difference Result 881 states and 2636 transitions. [2022-01-18 15:42:46,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:42:46,946 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:46,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:46,947 INFO L225 Difference]: With dead ends: 881 [2022-01-18 15:42:46,947 INFO L226 Difference]: Without dead ends: 788 [2022-01-18 15:42:46,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=193, Invalid=1447, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:42:46,947 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 129 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 342 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:46,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 436 Invalid, 1186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 812 Invalid, 0 Unknown, 342 Unchecked, 0.4s Time] [2022-01-18 15:42:46,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2022-01-18 15:42:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 680. [2022-01-18 15:42:46,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 680 states, 679 states have (on average 3.101620029455081) internal successors, (2106), 679 states have internal predecessors, (2106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:46,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 2106 transitions. [2022-01-18 15:42:46,955 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 2106 transitions. Word has length 20 [2022-01-18 15:42:46,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:46,955 INFO L470 AbstractCegarLoop]: Abstraction has 680 states and 2106 transitions. [2022-01-18 15:42:46,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:46,955 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 2106 transitions. [2022-01-18 15:42:46,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:46,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:46,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:46,971 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (142)] Ended with exit code 0 [2022-01-18 15:42:47,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262,142 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:47,156 INFO L402 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:47,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:47,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1023834507, now seen corresponding path program 112 times [2022-01-18 15:42:47,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:47,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374407292] [2022-01-18 15:42:47,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:47,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:47,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:47,439 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:47,440 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374407292] [2022-01-18 15:42:47,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374407292] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:47,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521591851] [2022-01-18 15:42:47,440 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:42:47,440 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:47,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:47,441 INFO L229 MonitoredProcess]: Starting monitored process 143 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:47,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Waiting until timeout for monitored process [2022-01-18 15:42:47,466 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:42:47,466 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:47,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:42:47,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:47,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:47,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:42:50,141 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:42:50,142 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 133 [2022-01-18 15:42:50,144 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 115 [2022-01-18 15:42:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:50,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:51,109 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:51,110 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:42:51,446 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:51,447 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:42:51,453 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:51,453 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:42:51,598 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:51,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521591851] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:51,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:51,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:42:51,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544210701] [2022-01-18 15:42:51,598 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:51,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:42:51,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:51,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:42:51,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:42:51,599 INFO L87 Difference]: Start difference. First operand 680 states and 2106 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:52,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:42:52,471 INFO L93 Difference]: Finished difference Result 866 states and 2688 transitions. [2022-01-18 15:42:52,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:42:52,471 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:42:52,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:42:52,473 INFO L225 Difference]: With dead ends: 866 [2022-01-18 15:42:52,473 INFO L226 Difference]: Without dead ends: 807 [2022-01-18 15:42:52,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=136, Invalid=1196, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:42:52,473 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 98 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 524 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 444 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:42:52,473 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 465 Invalid, 980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 524 Invalid, 0 Unknown, 444 Unchecked, 0.2s Time] [2022-01-18 15:42:52,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-01-18 15:42:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 683. [2022-01-18 15:42:52,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 682 states have (on average 3.1041055718475072) internal successors, (2117), 682 states have internal predecessors, (2117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:52,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 2117 transitions. [2022-01-18 15:42:52,480 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 2117 transitions. Word has length 20 [2022-01-18 15:42:52,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:42:52,480 INFO L470 AbstractCegarLoop]: Abstraction has 683 states and 2117 transitions. [2022-01-18 15:42:52,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:42:52,480 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 2117 transitions. [2022-01-18 15:42:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:42:52,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:42:52,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:42:52,497 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (143)] Ended with exit code 0 [2022-01-18 15:42:52,682 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263,143 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:52,682 INFO L402 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:42:52,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:42:52,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1114812981, now seen corresponding path program 113 times [2022-01-18 15:42:52,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:42:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626159707] [2022-01-18 15:42:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:42:52,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:42:52,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:42:52,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:52,958 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:42:52,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626159707] [2022-01-18 15:42:52,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626159707] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:42:52,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1932120736] [2022-01-18 15:42:52,958 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:42:52,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:42:52,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:42:52,964 INFO L229 MonitoredProcess]: Starting monitored process 144 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:42:52,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-01-18 15:42:52,996 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 15:42:52,996 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:42:52,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:42:52,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:42:53,181 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:42:53,794 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 170 treesize of output 146 [2022-01-18 15:42:53,796 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 146 treesize of output 122 [2022-01-18 15:42:54,773 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:54,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:42:55,333 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:42:55,333 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 78 treesize of output 72 [2022-01-18 15:42:55,585 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:42:55,585 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 95 [2022-01-18 15:42:55,587 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 74 [2022-01-18 15:42:55,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:42:55,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1932120736] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:42:55,642 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:42:55,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:42:55,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398700600] [2022-01-18 15:42:55,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:42:55,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:42:55,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:42:55,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:42:55,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:42:55,642 INFO L87 Difference]: Start difference. First operand 683 states and 2117 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:01,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:01,511 INFO L93 Difference]: Finished difference Result 1421 states and 4090 transitions. [2022-01-18 15:43:01,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 15:43:01,511 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:01,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:01,513 INFO L225 Difference]: With dead ends: 1421 [2022-01-18 15:43:01,513 INFO L226 Difference]: Without dead ends: 1362 [2022-01-18 15:43:01,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=432, Invalid=2430, Unknown=0, NotChecked=0, Total=2862 [2022-01-18 15:43:01,513 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 315 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 585 SdHoareTripleChecker+Invalid, 1897 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:01,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [315 Valid, 585 Invalid, 1897 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-01-18 15:43:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1362 states. [2022-01-18 15:43:01,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1362 to 675. [2022-01-18 15:43:01,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 674 states have (on average 3.0949554896142435) internal successors, (2086), 674 states have internal predecessors, (2086), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:01,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 2086 transitions. [2022-01-18 15:43:01,523 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 2086 transitions. Word has length 20 [2022-01-18 15:43:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:01,523 INFO L470 AbstractCegarLoop]: Abstraction has 675 states and 2086 transitions. [2022-01-18 15:43:01,523 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 2086 transitions. [2022-01-18 15:43:01,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:01,524 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:01,524 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:01,540 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Ended with exit code 0 [2022-01-18 15:43:01,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264,144 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:01,725 INFO L402 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:01,725 INFO L85 PathProgramCache]: Analyzing trace with hash -60677663, now seen corresponding path program 114 times [2022-01-18 15:43:01,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:01,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180916818] [2022-01-18 15:43:01,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:01,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:01,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:01,951 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:01,951 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180916818] [2022-01-18 15:43:01,951 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180916818] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:01,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615521737] [2022-01-18 15:43:01,951 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:43:01,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:01,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:01,952 INFO L229 MonitoredProcess]: Starting monitored process 145 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:01,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Waiting until timeout for monitored process [2022-01-18 15:43:01,978 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 15:43:01,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:01,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 15:43:01,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:02,244 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:02,244 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:43:04,304 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:04,305 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180 treesize of output 158 [2022-01-18 15:43:04,307 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 136 [2022-01-18 15:43:05,052 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:05,052 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:05,627 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:05,627 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 100 [2022-01-18 15:43:06,113 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:06,114 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 109 treesize of output 101 [2022-01-18 15:43:06,119 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:06,120 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 93 treesize of output 85 [2022-01-18 15:43:06,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:06,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615521737] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:06,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:06,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:06,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290657835] [2022-01-18 15:43:06,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:06,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:06,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:06,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:06,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:06,287 INFO L87 Difference]: Start difference. First operand 675 states and 2086 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:07,664 INFO L93 Difference]: Finished difference Result 847 states and 2559 transitions. [2022-01-18 15:43:07,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:43:07,664 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:07,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:07,665 INFO L225 Difference]: With dead ends: 847 [2022-01-18 15:43:07,665 INFO L226 Difference]: Without dead ends: 795 [2022-01-18 15:43:07,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 236 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=178, Invalid=1544, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:43:07,666 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 103 mSDsluCounter, 742 mSDsCounter, 0 mSdLazyCounter, 759 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 405 SdHoareTripleChecker+Invalid, 992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 204 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:07,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 405 Invalid, 992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 759 Invalid, 0 Unknown, 204 Unchecked, 0.4s Time] [2022-01-18 15:43:07,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 795 states. [2022-01-18 15:43:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 795 to 688. [2022-01-18 15:43:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 688 states, 687 states have (on average 3.0829694323144103) internal successors, (2118), 687 states have internal predecessors, (2118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:07,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 688 states to 688 states and 2118 transitions. [2022-01-18 15:43:07,672 INFO L78 Accepts]: Start accepts. Automaton has 688 states and 2118 transitions. Word has length 20 [2022-01-18 15:43:07,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:07,672 INFO L470 AbstractCegarLoop]: Abstraction has 688 states and 2118 transitions. [2022-01-18 15:43:07,673 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:07,673 INFO L276 IsEmpty]: Start isEmpty. Operand 688 states and 2118 transitions. [2022-01-18 15:43:07,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:07,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:07,673 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:07,689 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (145)] Ended with exit code 0 [2022-01-18 15:43:07,874 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 145 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable265 [2022-01-18 15:43:07,874 INFO L402 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:07,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:07,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1941209491, now seen corresponding path program 115 times [2022-01-18 15:43:07,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:07,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715546040] [2022-01-18 15:43:07,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:07,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:07,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:08,092 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:08,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:08,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715546040] [2022-01-18 15:43:08,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715546040] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:08,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571772412] [2022-01-18 15:43:08,093 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:43:08,093 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:08,093 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:08,094 INFO L229 MonitoredProcess]: Starting monitored process 146 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:08,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Waiting until timeout for monitored process [2022-01-18 15:43:08,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:08,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:08,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:08,641 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:08,642 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:43:10,459 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:10,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 169 treesize of output 149 [2022-01-18 15:43:10,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 129 [2022-01-18 15:43:11,116 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:11,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:11,634 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:11,635 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:43:12,235 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:12,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 154 treesize of output 138 [2022-01-18 15:43:12,243 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:12,243 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 114 [2022-01-18 15:43:12,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:12,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571772412] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:12,428 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:12,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:12,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548423239] [2022-01-18 15:43:12,429 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:12,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:12,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:12,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:12,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:12,429 INFO L87 Difference]: Start difference. First operand 688 states and 2118 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:13,202 INFO L93 Difference]: Finished difference Result 776 states and 2395 transitions. [2022-01-18 15:43:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:43:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:13,203 INFO L225 Difference]: With dead ends: 776 [2022-01-18 15:43:13,203 INFO L226 Difference]: Without dead ends: 761 [2022-01-18 15:43:13,203 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 22 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:43:13,203 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 62 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 356 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 214 SdHoareTripleChecker+Invalid, 639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 281 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:13,203 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [62 Valid, 214 Invalid, 639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 356 Invalid, 0 Unknown, 281 Unchecked, 0.2s Time] [2022-01-18 15:43:13,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-01-18 15:43:13,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 692. [2022-01-18 15:43:13,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 3.0882778581765558) internal successors, (2134), 691 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:13,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 2134 transitions. [2022-01-18 15:43:13,210 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 2134 transitions. Word has length 20 [2022-01-18 15:43:13,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:13,210 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 2134 transitions. [2022-01-18 15:43:13,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:13,211 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 2134 transitions. [2022-01-18 15:43:13,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:13,211 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:13,211 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:13,227 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (146)] Ended with exit code 0 [2022-01-18 15:43:13,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266,146 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:13,412 INFO L402 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:13,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:13,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1621293401, now seen corresponding path program 116 times [2022-01-18 15:43:13,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:13,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092248598] [2022-01-18 15:43:13,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:13,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:13,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:13,625 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:13,625 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:13,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092248598] [2022-01-18 15:43:13,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092248598] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:13,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1505852461] [2022-01-18 15:43:13,626 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:43:13,626 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:13,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:13,627 INFO L229 MonitoredProcess]: Starting monitored process 147 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:13,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Waiting until timeout for monitored process [2022-01-18 15:43:13,652 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:43:13,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:13,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:13,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:14,201 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:14,202 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-01-18 15:43:15,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:15,432 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 163 treesize of output 141 [2022-01-18 15:43:15,434 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 119 [2022-01-18 15:43:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:16,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:16,885 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:16,885 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:43:17,626 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:17,626 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 113 treesize of output 105 [2022-01-18 15:43:17,633 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:17,633 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 89 [2022-01-18 15:43:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:17,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1505852461] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:17,846 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:17,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:17,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947162855] [2022-01-18 15:43:17,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:17,846 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:17,846 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=627, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:17,847 INFO L87 Difference]: Start difference. First operand 692 states and 2134 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:18,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:18,863 INFO L93 Difference]: Finished difference Result 825 states and 2517 transitions. [2022-01-18 15:43:18,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 15:43:18,863 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:18,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:18,865 INFO L225 Difference]: With dead ends: 825 [2022-01-18 15:43:18,865 INFO L226 Difference]: Without dead ends: 768 [2022-01-18 15:43:18,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 23 SyntacticMatches, 3 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:43:18,865 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 91 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 763 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 531 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:18,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 404 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 763 Invalid, 0 Unknown, 531 Unchecked, 0.3s Time] [2022-01-18 15:43:18,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-01-18 15:43:18,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 692. [2022-01-18 15:43:18,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 3.0882778581765558) internal successors, (2134), 691 states have internal predecessors, (2134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:18,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 2134 transitions. [2022-01-18 15:43:18,872 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 2134 transitions. Word has length 20 [2022-01-18 15:43:18,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:18,872 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 2134 transitions. [2022-01-18 15:43:18,872 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:18,872 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 2134 transitions. [2022-01-18 15:43:18,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:18,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:18,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:18,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (147)] Forceful destruction successful, exit code 0 [2022-01-18 15:43:19,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 147 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable267 [2022-01-18 15:43:19,073 INFO L402 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:19,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:19,074 INFO L85 PathProgramCache]: Analyzing trace with hash -133709071, now seen corresponding path program 117 times [2022-01-18 15:43:19,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:19,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943997886] [2022-01-18 15:43:19,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:19,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:19,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:19,294 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:19,294 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:19,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943997886] [2022-01-18 15:43:19,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943997886] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:19,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618603821] [2022-01-18 15:43:19,294 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:43:19,294 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:19,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:19,295 INFO L229 MonitoredProcess]: Starting monitored process 148 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:19,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Waiting until timeout for monitored process [2022-01-18 15:43:19,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:43:19,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:19,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:19,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:19,759 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:19,759 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:43:21,732 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:21,733 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 155 treesize of output 137 [2022-01-18 15:43:21,735 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 137 treesize of output 119 [2022-01-18 15:43:22,298 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:22,298 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:22,805 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:22,805 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:43:23,904 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:23,905 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 122 [2022-01-18 15:43:23,911 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:23,911 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 114 treesize of output 106 [2022-01-18 15:43:24,142 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:24,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618603821] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:24,142 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:24,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:24,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402058232] [2022-01-18 15:43:24,143 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:24,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:24,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:24,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:24,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:24,143 INFO L87 Difference]: Start difference. First operand 692 states and 2134 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:25,145 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:25,146 INFO L93 Difference]: Finished difference Result 780 states and 2411 transitions. [2022-01-18 15:43:25,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:43:25,146 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:25,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:25,147 INFO L225 Difference]: With dead ends: 780 [2022-01-18 15:43:25,147 INFO L226 Difference]: Without dead ends: 765 [2022-01-18 15:43:25,148 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=139, Invalid=1121, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:43:25,148 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 41 mSDsluCounter, 672 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 125 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:25,148 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 376 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 626 Invalid, 0 Unknown, 125 Unchecked, 0.3s Time] [2022-01-18 15:43:25,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-01-18 15:43:25,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 696. [2022-01-18 15:43:25,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 695 states have (on average 3.0949640287769786) internal successors, (2151), 695 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:25,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 2151 transitions. [2022-01-18 15:43:25,155 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 2151 transitions. Word has length 20 [2022-01-18 15:43:25,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:25,155 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 2151 transitions. [2022-01-18 15:43:25,155 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:25,155 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 2151 transitions. [2022-01-18 15:43:25,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:25,156 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:25,156 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:25,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (148)] Ended with exit code 0 [2022-01-18 15:43:25,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 148 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable268 [2022-01-18 15:43:25,356 INFO L402 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:25,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:25,357 INFO L85 PathProgramCache]: Analyzing trace with hash -533791695, now seen corresponding path program 118 times [2022-01-18 15:43:25,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:25,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520711138] [2022-01-18 15:43:25,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:25,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:25,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:25,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:25,583 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:25,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520711138] [2022-01-18 15:43:25,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520711138] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:25,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1472678593] [2022-01-18 15:43:25,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:43:25,584 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:25,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:25,585 INFO L229 MonitoredProcess]: Starting monitored process 149 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:25,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Waiting until timeout for monitored process [2022-01-18 15:43:25,609 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:43:25,610 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:25,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:43:25,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:26,059 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:26,059 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 129 treesize of output 109 [2022-01-18 15:43:27,978 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:27,979 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 143 [2022-01-18 15:43:27,981 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 143 treesize of output 121 [2022-01-18 15:43:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:28,389 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:28,824 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:28,824 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:43:29,228 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:29,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:43:29,234 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:29,235 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:43:29,385 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:29,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1472678593] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:29,386 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:29,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:29,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113258649] [2022-01-18 15:43:29,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:29,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:29,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:29,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:29,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:29,386 INFO L87 Difference]: Start difference. First operand 696 states and 2151 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:30,014 INFO L93 Difference]: Finished difference Result 785 states and 2401 transitions. [2022-01-18 15:43:30,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 15:43:30,014 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:30,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:30,015 INFO L225 Difference]: With dead ends: 785 [2022-01-18 15:43:30,016 INFO L226 Difference]: Without dead ends: 747 [2022-01-18 15:43:30,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=136, Invalid=1124, Unknown=0, NotChecked=0, Total=1260 [2022-01-18 15:43:30,016 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 41 mSDsluCounter, 594 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 372 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 102 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:30,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 372 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 463 Invalid, 0 Unknown, 102 Unchecked, 0.2s Time] [2022-01-18 15:43:30,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-01-18 15:43:30,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 701. [2022-01-18 15:43:30,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 701 states, 700 states have (on average 3.084285714285714) internal successors, (2159), 700 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:30,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 701 states to 701 states and 2159 transitions. [2022-01-18 15:43:30,023 INFO L78 Accepts]: Start accepts. Automaton has 701 states and 2159 transitions. Word has length 20 [2022-01-18 15:43:30,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:30,023 INFO L470 AbstractCegarLoop]: Abstraction has 701 states and 2159 transitions. [2022-01-18 15:43:30,023 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:30,023 INFO L276 IsEmpty]: Start isEmpty. Operand 701 states and 2159 transitions. [2022-01-18 15:43:30,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:30,024 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:30,024 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:30,039 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (149)] Ended with exit code 0 [2022-01-18 15:43:30,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269,149 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:30,224 INFO L402 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:30,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:30,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1766710445, now seen corresponding path program 119 times [2022-01-18 15:43:30,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:30,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67441362] [2022-01-18 15:43:30,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:30,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:30,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:30,495 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:30,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67441362] [2022-01-18 15:43:30,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67441362] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:30,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711038338] [2022-01-18 15:43:30,496 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:43:30,496 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:30,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:30,497 INFO L229 MonitoredProcess]: Starting monitored process 150 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:30,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Waiting until timeout for monitored process [2022-01-18 15:43:30,522 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:43:30,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:30,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:43:30,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:30,723 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:43:31,359 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 151 [2022-01-18 15:43:31,361 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 127 [2022-01-18 15:43:32,125 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:32,125 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:32,816 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:32,816 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 161 treesize of output 149 [2022-01-18 15:43:33,340 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:43:33,341 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:43:33,343 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:43:33,382 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:33,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711038338] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:33,382 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:33,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:43:33,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43313132] [2022-01-18 15:43:33,382 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:33,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:43:33,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:33,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:43:33,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=680, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:43:33,383 INFO L87 Difference]: Start difference. First operand 701 states and 2159 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:36,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:36,802 INFO L93 Difference]: Finished difference Result 1131 states and 3238 transitions. [2022-01-18 15:43:36,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 15:43:36,802 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:36,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:36,804 INFO L225 Difference]: With dead ends: 1131 [2022-01-18 15:43:36,804 INFO L226 Difference]: Without dead ends: 1002 [2022-01-18 15:43:36,804 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=303, Invalid=1677, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 15:43:36,804 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 241 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 241 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 1538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:36,804 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [241 Valid, 550 Invalid, 1538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 15:43:36,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2022-01-18 15:43:36,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 710. [2022-01-18 15:43:36,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.093088857545839) internal successors, (2193), 709 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:36,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2193 transitions. [2022-01-18 15:43:36,812 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2193 transitions. Word has length 20 [2022-01-18 15:43:36,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:36,813 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2193 transitions. [2022-01-18 15:43:36,813 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:36,813 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2193 transitions. [2022-01-18 15:43:36,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:36,813 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:36,813 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:36,829 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (150)] Ended with exit code 0 [2022-01-18 15:43:37,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 150 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable270 [2022-01-18 15:43:37,014 INFO L402 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:37,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:37,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2139784363, now seen corresponding path program 120 times [2022-01-18 15:43:37,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:37,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [769548027] [2022-01-18 15:43:37,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:37,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:37,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:37,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:37,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:37,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [769548027] [2022-01-18 15:43:37,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [769548027] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:37,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644285610] [2022-01-18 15:43:37,239 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:43:37,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:37,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:37,240 INFO L229 MonitoredProcess]: Starting monitored process 151 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:37,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Waiting until timeout for monitored process [2022-01-18 15:43:37,266 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 15:43:37,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:37,267 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:37,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:37,713 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:37,714 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:43:38,163 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:38,164 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 175 treesize of output 153 [2022-01-18 15:43:38,166 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 153 treesize of output 131 [2022-01-18 15:43:39,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:39,247 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:39,918 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:39,919 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 168 treesize of output 160 [2022-01-18 15:43:40,382 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:40,382 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 126 treesize of output 118 [2022-01-18 15:43:40,388 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:40,389 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 110 treesize of output 102 [2022-01-18 15:43:40,574 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:40,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644285610] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:40,574 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:40,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:40,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638244073] [2022-01-18 15:43:40,574 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:40,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:40,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:40,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:40,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:40,575 INFO L87 Difference]: Start difference. First operand 710 states and 2193 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:41,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:41,713 INFO L93 Difference]: Finished difference Result 856 states and 2629 transitions. [2022-01-18 15:43:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 15:43:41,714 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:41,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:41,715 INFO L225 Difference]: With dead ends: 856 [2022-01-18 15:43:41,715 INFO L226 Difference]: Without dead ends: 841 [2022-01-18 15:43:41,716 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 15:43:41,716 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 91 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 91 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:41,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 251 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 640 Invalid, 0 Unknown, 91 Unchecked, 0.3s Time] [2022-01-18 15:43:41,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-01-18 15:43:41,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 713. [2022-01-18 15:43:41,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 713 states, 712 states have (on average 3.101123595505618) internal successors, (2208), 712 states have internal predecessors, (2208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:41,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 713 states to 713 states and 2208 transitions. [2022-01-18 15:43:41,723 INFO L78 Accepts]: Start accepts. Automaton has 713 states and 2208 transitions. Word has length 20 [2022-01-18 15:43:41,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:41,723 INFO L470 AbstractCegarLoop]: Abstraction has 713 states and 2208 transitions. [2022-01-18 15:43:41,723 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:41,723 INFO L276 IsEmpty]: Start isEmpty. Operand 713 states and 2208 transitions. [2022-01-18 15:43:41,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:41,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:41,724 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:41,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (151)] Forceful destruction successful, exit code 0 [2022-01-18 15:43:41,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271,151 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:41,924 INFO L402 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:41,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:41,925 INFO L85 PathProgramCache]: Analyzing trace with hash -170232113, now seen corresponding path program 121 times [2022-01-18 15:43:41,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:41,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131372054] [2022-01-18 15:43:41,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:41,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:41,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:42,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:42,239 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:42,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131372054] [2022-01-18 15:43:42,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131372054] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:42,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430145344] [2022-01-18 15:43:42,239 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:43:42,240 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:42,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:42,240 INFO L229 MonitoredProcess]: Starting monitored process 152 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:42,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Waiting until timeout for monitored process [2022-01-18 15:43:42,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:42,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:42,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:42,720 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:42,721 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:43:43,227 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:43,228 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 173 treesize of output 151 [2022-01-18 15:43:43,230 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 151 treesize of output 129 [2022-01-18 15:43:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:44,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:44,826 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:44,826 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:43:45,717 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:45,718 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 116 [2022-01-18 15:43:45,738 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:45,738 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 96 [2022-01-18 15:43:45,875 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:45,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430145344] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:45,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:45,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:45,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180746389] [2022-01-18 15:43:45,875 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:45,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:45,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:45,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:45,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=628, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:45,876 INFO L87 Difference]: Start difference. First operand 713 states and 2208 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:47,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:47,212 INFO L93 Difference]: Finished difference Result 827 states and 2563 transitions. [2022-01-18 15:43:47,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:43:47,212 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:47,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:47,213 INFO L225 Difference]: With dead ends: 827 [2022-01-18 15:43:47,213 INFO L226 Difference]: Without dead ends: 797 [2022-01-18 15:43:47,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=169, Invalid=1163, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 15:43:47,214 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 771 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 346 SdHoareTripleChecker+Invalid, 1231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 451 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:47,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 346 Invalid, 1231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 771 Invalid, 0 Unknown, 451 Unchecked, 0.3s Time] [2022-01-18 15:43:47,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 797 states. [2022-01-18 15:43:47,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 797 to 711. [2022-01-18 15:43:47,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711 states, 710 states have (on average 3.0971830985915494) internal successors, (2199), 710 states have internal predecessors, (2199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711 states to 711 states and 2199 transitions. [2022-01-18 15:43:47,221 INFO L78 Accepts]: Start accepts. Automaton has 711 states and 2199 transitions. Word has length 20 [2022-01-18 15:43:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:47,221 INFO L470 AbstractCegarLoop]: Abstraction has 711 states and 2199 transitions. [2022-01-18 15:43:47,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:47,221 INFO L276 IsEmpty]: Start isEmpty. Operand 711 states and 2199 transitions. [2022-01-18 15:43:47,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:47,222 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:47,222 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:47,237 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (152)] Ended with exit code 0 [2022-01-18 15:43:47,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272,152 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:47,422 INFO L402 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:47,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:47,423 INFO L85 PathProgramCache]: Analyzing trace with hash 951164839, now seen corresponding path program 122 times [2022-01-18 15:43:47,423 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:47,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272980082] [2022-01-18 15:43:47,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:47,423 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:47,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:47,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:47,649 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:47,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272980082] [2022-01-18 15:43:47,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272980082] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:47,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1374426341] [2022-01-18 15:43:47,649 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:43:47,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:47,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:47,650 INFO L229 MonitoredProcess]: Starting monitored process 153 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:47,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Waiting until timeout for monitored process [2022-01-18 15:43:47,676 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:43:47,676 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:47,676 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:47,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:48,162 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:48,162 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:43:48,655 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:48,656 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 171 treesize of output 149 [2022-01-18 15:43:48,659 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 127 [2022-01-18 15:43:50,084 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:50,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:50,599 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:50,599 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:43:51,448 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:51,449 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 136 treesize of output 124 [2022-01-18 15:43:51,456 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:51,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 116 treesize of output 104 [2022-01-18 15:43:51,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:51,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1374426341] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:51,659 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:51,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:51,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394776492] [2022-01-18 15:43:51,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:51,659 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:51,659 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:51,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:51,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:51,659 INFO L87 Difference]: Start difference. First operand 711 states and 2199 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:52,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:52,828 INFO L93 Difference]: Finished difference Result 830 states and 2542 transitions. [2022-01-18 15:43:52,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 15:43:52,828 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:52,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:52,829 INFO L225 Difference]: With dead ends: 830 [2022-01-18 15:43:52,829 INFO L226 Difference]: Without dead ends: 815 [2022-01-18 15:43:52,830 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=147, Invalid=1043, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:43:52,830 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 58 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 199 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 76 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:52,830 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 199 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 482 Invalid, 0 Unknown, 76 Unchecked, 0.2s Time] [2022-01-18 15:43:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2022-01-18 15:43:52,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 710. [2022-01-18 15:43:52,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.093088857545839) internal successors, (2193), 709 states have internal predecessors, (2193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:52,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2193 transitions. [2022-01-18 15:43:52,837 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2193 transitions. Word has length 20 [2022-01-18 15:43:52,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:52,837 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2193 transitions. [2022-01-18 15:43:52,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:52,838 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2193 transitions. [2022-01-18 15:43:52,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:52,838 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:52,838 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:52,854 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (153)] Ended with exit code 0 [2022-01-18 15:43:53,039 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273,153 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:53,039 INFO L402 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:53,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:53,039 INFO L85 PathProgramCache]: Analyzing trace with hash -8975829, now seen corresponding path program 123 times [2022-01-18 15:43:53,039 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:53,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027938357] [2022-01-18 15:43:53,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:53,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:53,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:53,303 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027938357] [2022-01-18 15:43:53,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027938357] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:53,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006399704] [2022-01-18 15:43:53,303 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:43:53,303 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:53,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:53,304 INFO L229 MonitoredProcess]: Starting monitored process 154 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:53,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Waiting until timeout for monitored process [2022-01-18 15:43:53,329 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:43:53,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:53,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:53,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:43:53,875 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:53,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 101 treesize of output 85 [2022-01-18 15:43:54,326 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:43:54,327 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 140 [2022-01-18 15:43:54,329 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 120 [2022-01-18 15:43:55,605 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:55,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:43:56,199 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:56,199 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 103 treesize of output 95 [2022-01-18 15:43:57,280 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:57,280 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 140 treesize of output 128 [2022-01-18 15:43:57,287 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:43:57,287 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 120 treesize of output 108 [2022-01-18 15:43:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:57,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006399704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:43:57,540 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:43:57,541 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:43:57,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377130531] [2022-01-18 15:43:57,541 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:43:57,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:43:57,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:43:57,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:43:57,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:43:57,541 INFO L87 Difference]: Start difference. First operand 710 states and 2193 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:59,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:43:59,486 INFO L93 Difference]: Finished difference Result 993 states and 2911 transitions. [2022-01-18 15:43:59,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 15:43:59,486 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:43:59,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:43:59,488 INFO L225 Difference]: With dead ends: 993 [2022-01-18 15:43:59,488 INFO L226 Difference]: Without dead ends: 919 [2022-01-18 15:43:59,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=197, Invalid=1525, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 15:43:59,488 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 122 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 918 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 460 SdHoareTripleChecker+Invalid, 1074 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 110 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:43:59,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [122 Valid, 460 Invalid, 1074 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 918 Invalid, 0 Unknown, 110 Unchecked, 0.5s Time] [2022-01-18 15:43:59,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 919 states. [2022-01-18 15:43:59,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 919 to 715. [2022-01-18 15:43:59,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 714 states have (on average 3.1092436974789917) internal successors, (2220), 714 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:59,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 2220 transitions. [2022-01-18 15:43:59,496 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 2220 transitions. Word has length 20 [2022-01-18 15:43:59,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:43:59,496 INFO L470 AbstractCegarLoop]: Abstraction has 715 states and 2220 transitions. [2022-01-18 15:43:59,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:43:59,497 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 2220 transitions. [2022-01-18 15:43:59,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:43:59,497 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:43:59,497 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:43:59,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (154)] Ended with exit code 0 [2022-01-18 15:43:59,698 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274,154 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:59,698 INFO L402 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:43:59,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:43:59,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1306336117, now seen corresponding path program 124 times [2022-01-18 15:43:59,698 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:43:59,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625351318] [2022-01-18 15:43:59,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:43:59,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:43:59,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:43:59,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:43:59,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:43:59,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625351318] [2022-01-18 15:43:59,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625351318] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:43:59,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308227098] [2022-01-18 15:43:59,922 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:43:59,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:43:59,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:43:59,923 INFO L229 MonitoredProcess]: Starting monitored process 155 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:43:59,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Waiting until timeout for monitored process [2022-01-18 15:43:59,948 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:43:59,948 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:43:59,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:43:59,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:00,393 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:00,393 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 109 treesize of output 91 [2022-01-18 15:44:00,852 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:00,852 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 160 treesize of output 138 [2022-01-18 15:44:00,855 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 116 [2022-01-18 15:44:01,984 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:01,984 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:44:02,510 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:02,511 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:44:03,222 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:03,222 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 128 treesize of output 116 [2022-01-18 15:44:03,229 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:03,229 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 96 [2022-01-18 15:44:03,355 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:03,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308227098] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:44:03,356 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:44:03,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:44:03,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572679741] [2022-01-18 15:44:03,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:44:03,356 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:44:03,356 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:44:03,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:44:03,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:44:03,357 INFO L87 Difference]: Start difference. First operand 715 states and 2220 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:05,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:44:05,035 INFO L93 Difference]: Finished difference Result 879 states and 2698 transitions. [2022-01-18 15:44:05,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:44:05,035 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:44:05,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:44:05,037 INFO L225 Difference]: With dead ends: 879 [2022-01-18 15:44:05,037 INFO L226 Difference]: Without dead ends: 834 [2022-01-18 15:44:05,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 22 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=180, Invalid=1302, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:44:05,037 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 73 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 791 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 383 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 330 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:44:05,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 383 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 791 Invalid, 0 Unknown, 330 Unchecked, 0.4s Time] [2022-01-18 15:44:05,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-01-18 15:44:05,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 716. [2022-01-18 15:44:05,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 3.1174825174825176) internal successors, (2229), 715 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:05,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 2229 transitions. [2022-01-18 15:44:05,044 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 2229 transitions. Word has length 20 [2022-01-18 15:44:05,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:44:05,044 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 2229 transitions. [2022-01-18 15:44:05,044 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:05,044 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 2229 transitions. [2022-01-18 15:44:05,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:44:05,045 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:44:05,045 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:44:05,061 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (155)] Ended with exit code 0 [2022-01-18 15:44:05,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275,155 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:05,246 INFO L402 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:44:05,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:44:05,246 INFO L85 PathProgramCache]: Analyzing trace with hash -203819107, now seen corresponding path program 125 times [2022-01-18 15:44:05,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:44:05,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540916868] [2022-01-18 15:44:05,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:44:05,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:44:05,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:05,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:05,522 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:44:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540916868] [2022-01-18 15:44:05,522 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540916868] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:44:05,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [856237092] [2022-01-18 15:44:05,522 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 15:44:05,522 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:05,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:44:05,523 INFO L229 MonitoredProcess]: Starting monitored process 156 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:44:05,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Waiting until timeout for monitored process [2022-01-18 15:44:05,548 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:44:05,549 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:44:05,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:44:05,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:05,858 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 93 treesize of output 79 [2022-01-18 15:44:06,423 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 149 treesize of output 131 [2022-01-18 15:44:06,425 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 131 treesize of output 113 [2022-01-18 15:44:06,786 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:06,786 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:44:07,099 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:07,100 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:44:07,620 INFO L353 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2022-01-18 15:44:07,621 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 106 treesize of output 91 [2022-01-18 15:44:07,623 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 88 treesize of output 70 [2022-01-18 15:44:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:07,658 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [856237092] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:44:07,658 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:44:07,658 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 28 [2022-01-18 15:44:07,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879243470] [2022-01-18 15:44:07,658 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:44:07,658 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-01-18 15:44:07,658 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:44:07,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-01-18 15:44:07,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=673, Unknown=0, NotChecked=0, Total=756 [2022-01-18 15:44:07,659 INFO L87 Difference]: Start difference. First operand 716 states and 2229 transitions. Second operand has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:09,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:44:09,165 INFO L93 Difference]: Finished difference Result 905 states and 2762 transitions. [2022-01-18 15:44:09,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:44:09,165 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:44:09,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:44:09,167 INFO L225 Difference]: With dead ends: 905 [2022-01-18 15:44:09,167 INFO L226 Difference]: Without dead ends: 890 [2022-01-18 15:44:09,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=165, Invalid=1025, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 15:44:09,167 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 96 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1048 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 309 SdHoareTripleChecker+Invalid, 1067 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1048 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 15:44:09,167 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [96 Valid, 309 Invalid, 1067 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1048 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 15:44:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-01-18 15:44:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 716. [2022-01-18 15:44:09,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 716 states, 715 states have (on average 3.1174825174825176) internal successors, (2229), 715 states have internal predecessors, (2229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:09,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 716 states to 716 states and 2229 transitions. [2022-01-18 15:44:09,175 INFO L78 Accepts]: Start accepts. Automaton has 716 states and 2229 transitions. Word has length 20 [2022-01-18 15:44:09,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:44:09,175 INFO L470 AbstractCegarLoop]: Abstraction has 716 states and 2229 transitions. [2022-01-18 15:44:09,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.8928571428571428) internal successors, (53), 28 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:09,175 INFO L276 IsEmpty]: Start isEmpty. Operand 716 states and 2229 transitions. [2022-01-18 15:44:09,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:44:09,176 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:44:09,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:44:09,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (156)] Forceful destruction successful, exit code 0 [2022-01-18 15:44:09,376 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276,156 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:09,377 INFO L402 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:44:09,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:44:09,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1696600409, now seen corresponding path program 126 times [2022-01-18 15:44:09,377 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:44:09,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898207095] [2022-01-18 15:44:09,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:44:09,377 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:44:09,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:09,698 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:09,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:44:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898207095] [2022-01-18 15:44:09,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898207095] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:44:09,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306467858] [2022-01-18 15:44:09,698 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 15:44:09,698 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:09,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:44:09,699 INFO L229 MonitoredProcess]: Starting monitored process 157 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:44:09,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Waiting until timeout for monitored process [2022-01-18 15:44:09,725 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 15:44:09,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:44:09,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:44:09,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:10,367 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:10,368 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 96 treesize of output 82 [2022-01-18 15:44:11,452 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:11,452 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 166 treesize of output 144 [2022-01-18 15:44:11,454 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 144 treesize of output 122 [2022-01-18 15:44:12,561 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:12,561 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:44:12,915 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:12,915 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 122 treesize of output 112 [2022-01-18 15:44:13,294 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:13,294 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:44:13,301 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:13,301 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:44:13,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:13,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306467858] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:44:13,455 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:44:13,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:44:13,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379204468] [2022-01-18 15:44:13,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:44:13,455 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:44:13,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:44:13,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:44:13,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=622, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:44:13,456 INFO L87 Difference]: Start difference. First operand 716 states and 2229 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:14,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:44:14,093 INFO L93 Difference]: Finished difference Result 822 states and 2538 transitions. [2022-01-18 15:44:14,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 15:44:14,093 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:44:14,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:44:14,095 INFO L225 Difference]: With dead ends: 822 [2022-01-18 15:44:14,095 INFO L226 Difference]: Without dead ends: 807 [2022-01-18 15:44:14,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=985, Unknown=0, NotChecked=0, Total=1122 [2022-01-18 15:44:14,095 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 87 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 197 SdHoareTripleChecker+Invalid, 512 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 112 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 15:44:14,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 197 Invalid, 512 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 385 Invalid, 0 Unknown, 112 Unchecked, 0.2s Time] [2022-01-18 15:44:14,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2022-01-18 15:44:14,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 721. [2022-01-18 15:44:14,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 721 states, 720 states have (on average 3.1194444444444445) internal successors, (2246), 720 states have internal predecessors, (2246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:14,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 721 states to 721 states and 2246 transitions. [2022-01-18 15:44:14,103 INFO L78 Accepts]: Start accepts. Automaton has 721 states and 2246 transitions. Word has length 20 [2022-01-18 15:44:14,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:44:14,103 INFO L470 AbstractCegarLoop]: Abstraction has 721 states and 2246 transitions. [2022-01-18 15:44:14,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:14,103 INFO L276 IsEmpty]: Start isEmpty. Operand 721 states and 2246 transitions. [2022-01-18 15:44:14,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:44:14,104 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:44:14,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:44:14,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (157)] Forceful destruction successful, exit code 0 [2022-01-18 15:44:14,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 157 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable277 [2022-01-18 15:44:14,304 INFO L402 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:44:14,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:44:14,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1719196957, now seen corresponding path program 127 times [2022-01-18 15:44:14,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:44:14,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [772705632] [2022-01-18 15:44:14,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:44:14,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:44:14,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:14,507 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:14,507 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:44:14,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [772705632] [2022-01-18 15:44:14,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [772705632] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:44:14,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [14295005] [2022-01-18 15:44:14,508 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 15:44:14,508 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:14,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:44:14,509 INFO L229 MonitoredProcess]: Starting monitored process 158 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:44:14,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Waiting until timeout for monitored process [2022-01-18 15:44:14,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:14,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:44:14,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:15,167 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:15,167 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 95 treesize of output 81 [2022-01-18 15:44:15,889 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:15,889 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 178 treesize of output 158 [2022-01-18 15:44:15,891 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 158 treesize of output 138 [2022-01-18 15:44:16,649 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:16,649 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:44:16,986 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:16,987 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 107 treesize of output 99 [2022-01-18 15:44:17,455 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:17,455 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 118 treesize of output 108 [2022-01-18 15:44:17,461 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:17,461 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 100 treesize of output 90 [2022-01-18 15:44:17,623 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:17,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [14295005] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:44:17,624 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:44:17,624 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:44:17,624 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113663487] [2022-01-18 15:44:17,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:44:17,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:44:17,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:44:17,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:44:17,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:44:17,624 INFO L87 Difference]: Start difference. First operand 721 states and 2246 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:19,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:44:19,199 INFO L93 Difference]: Finished difference Result 961 states and 2864 transitions. [2022-01-18 15:44:19,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-01-18 15:44:19,199 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:44:19,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:44:19,200 INFO L225 Difference]: With dead ends: 961 [2022-01-18 15:44:19,200 INFO L226 Difference]: Without dead ends: 887 [2022-01-18 15:44:19,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=195, Invalid=1445, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 15:44:19,201 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 141 mSDsluCounter, 985 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 141 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 1322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 380 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 15:44:19,201 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [141 Valid, 496 Invalid, 1322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 909 Invalid, 0 Unknown, 380 Unchecked, 0.4s Time] [2022-01-18 15:44:19,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-01-18 15:44:19,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 723. [2022-01-18 15:44:19,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 722 states have (on average 3.119113573407202) internal successors, (2252), 722 states have internal predecessors, (2252), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:19,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 2252 transitions. [2022-01-18 15:44:19,209 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 2252 transitions. Word has length 20 [2022-01-18 15:44:19,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:44:19,209 INFO L470 AbstractCegarLoop]: Abstraction has 723 states and 2252 transitions. [2022-01-18 15:44:19,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:19,209 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 2252 transitions. [2022-01-18 15:44:19,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:44:19,210 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:44:19,210 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:44:19,225 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (158)] Ended with exit code 0 [2022-01-18 15:44:19,410 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 158 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable278 [2022-01-18 15:44:19,410 INFO L402 AbstractCegarLoop]: === Iteration 280 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:44:19,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:44:19,410 INFO L85 PathProgramCache]: Analyzing trace with hash -82335449, now seen corresponding path program 128 times [2022-01-18 15:44:19,411 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:44:19,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141128123] [2022-01-18 15:44:19,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:44:19,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:44:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:19,606 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:44:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141128123] [2022-01-18 15:44:19,606 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141128123] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:44:19,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2053710699] [2022-01-18 15:44:19,607 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 15:44:19,607 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:19,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:44:19,607 INFO L229 MonitoredProcess]: Starting monitored process 159 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:44:19,608 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Waiting until timeout for monitored process [2022-01-18 15:44:19,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 15:44:19,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:44:19,633 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:44:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:20,443 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:20,443 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 100 [2022-01-18 15:44:20,928 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:20,930 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 187 treesize of output 165 [2022-01-18 15:44:20,932 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 165 treesize of output 143 [2022-01-18 15:44:22,319 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:22,319 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:44:22,602 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:22,603 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:44:23,033 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:23,033 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:44:23,040 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:23,040 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:44:23,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:23,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2053710699] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:44:23,174 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:44:23,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:44:23,174 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658432980] [2022-01-18 15:44:23,174 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:44:23,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:44:23,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:44:23,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:44:23,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=630, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:44:23,175 INFO L87 Difference]: Start difference. First operand 723 states and 2252 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:24,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:44:24,571 INFO L93 Difference]: Finished difference Result 878 states and 2668 transitions. [2022-01-18 15:44:24,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 15:44:24,571 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:44:24,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:44:24,572 INFO L225 Difference]: With dead ends: 878 [2022-01-18 15:44:24,572 INFO L226 Difference]: Without dead ends: 848 [2022-01-18 15:44:24,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=178, Invalid=1304, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 15:44:24,573 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 146 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 675 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 675 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 32 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:44:24,573 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [146 Valid, 333 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 675 Invalid, 0 Unknown, 32 Unchecked, 0.3s Time] [2022-01-18 15:44:24,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2022-01-18 15:44:24,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 728. [2022-01-18 15:44:24,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 728 states, 727 states have (on average 3.1196698762035764) internal successors, (2268), 727 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:24,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 728 states to 728 states and 2268 transitions. [2022-01-18 15:44:24,580 INFO L78 Accepts]: Start accepts. Automaton has 728 states and 2268 transitions. Word has length 20 [2022-01-18 15:44:24,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:44:24,580 INFO L470 AbstractCegarLoop]: Abstraction has 728 states and 2268 transitions. [2022-01-18 15:44:24,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:24,580 INFO L276 IsEmpty]: Start isEmpty. Operand 728 states and 2268 transitions. [2022-01-18 15:44:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:44:24,581 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:44:24,581 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:44:24,596 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (159)] Ended with exit code 0 [2022-01-18 15:44:24,781 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 159 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable279 [2022-01-18 15:44:24,782 INFO L402 AbstractCegarLoop]: === Iteration 281 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:44:24,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:44:24,782 INFO L85 PathProgramCache]: Analyzing trace with hash -59738901, now seen corresponding path program 129 times [2022-01-18 15:44:24,782 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:44:24,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16415772] [2022-01-18 15:44:24,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:44:24,782 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:44:24,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:24,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:24,988 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:44:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16415772] [2022-01-18 15:44:24,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16415772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:44:24,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510263891] [2022-01-18 15:44:24,988 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 15:44:24,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:24,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:44:24,989 INFO L229 MonitoredProcess]: Starting monitored process 160 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:44:24,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Waiting until timeout for monitored process [2022-01-18 15:44:25,015 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 15:44:25,015 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:44:25,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 15:44:25,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:25,876 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:25,876 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 140 treesize of output 122 [2022-01-18 15:44:26,456 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:26,457 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 162 [2022-01-18 15:44:26,459 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 162 treesize of output 140 [2022-01-18 15:44:27,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:27,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 15:44:27,880 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:27,880 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 90 treesize of output 84 [2022-01-18 15:44:28,285 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:28,285 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 102 treesize of output 94 [2022-01-18 15:44:28,292 INFO L353 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-01-18 15:44:28,292 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 86 treesize of output 78 [2022-01-18 15:44:28,403 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:28,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510263891] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 15:44:28,404 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 15:44:28,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 27 [2022-01-18 15:44:28,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505053262] [2022-01-18 15:44:28,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 15:44:28,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-01-18 15:44:28,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 15:44:28,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-01-18 15:44:28,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=631, Unknown=0, NotChecked=0, Total=702 [2022-01-18 15:44:28,405 INFO L87 Difference]: Start difference. First operand 728 states and 2268 transitions. Second operand has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:30,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 15:44:30,064 INFO L93 Difference]: Finished difference Result 944 states and 2833 transitions. [2022-01-18 15:44:30,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 15:44:30,065 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-01-18 15:44:30,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 15:44:30,066 INFO L225 Difference]: With dead ends: 944 [2022-01-18 15:44:30,066 INFO L226 Difference]: Without dead ends: 870 [2022-01-18 15:44:30,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 201 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=184, Invalid=1376, Unknown=0, NotChecked=0, Total=1560 [2022-01-18 15:44:30,066 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 168 mSDsluCounter, 776 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 420 SdHoareTripleChecker+Invalid, 1035 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 285 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 15:44:30,066 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 420 Invalid, 1035 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 708 Invalid, 0 Unknown, 285 Unchecked, 0.3s Time] [2022-01-18 15:44:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 870 states. [2022-01-18 15:44:30,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 870 to 726. [2022-01-18 15:44:30,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 726 states, 725 states have (on average 3.1213793103448277) internal successors, (2263), 725 states have internal predecessors, (2263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:30,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 726 states to 726 states and 2263 transitions. [2022-01-18 15:44:30,074 INFO L78 Accepts]: Start accepts. Automaton has 726 states and 2263 transitions. Word has length 20 [2022-01-18 15:44:30,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 15:44:30,074 INFO L470 AbstractCegarLoop]: Abstraction has 726 states and 2263 transitions. [2022-01-18 15:44:30,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.8518518518518519) internal successors, (50), 27 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 15:44:30,074 INFO L276 IsEmpty]: Start isEmpty. Operand 726 states and 2263 transitions. [2022-01-18 15:44:30,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-01-18 15:44:30,075 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 15:44:30,075 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 15:44:30,090 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (160)] Ended with exit code 0 [2022-01-18 15:44:30,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable280,160 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:30,276 INFO L402 AbstractCegarLoop]: === Iteration 282 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 15:44:30,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 15:44:30,276 INFO L85 PathProgramCache]: Analyzing trace with hash 511715905, now seen corresponding path program 130 times [2022-01-18 15:44:30,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 15:44:30,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21206043] [2022-01-18 15:44:30,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 15:44:30,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 15:44:30,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 15:44:30,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 15:44:30,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 15:44:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21206043] [2022-01-18 15:44:30,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [21206043] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 15:44:30,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011638603] [2022-01-18 15:44:30,523 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 15:44:30,523 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:30,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 15:44:30,524 INFO L229 MonitoredProcess]: Starting monitored process 161 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 15:44:30,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Waiting until timeout for monitored process [2022-01-18 15:44:30,550 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 15:44:30,551 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 15:44:30,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 15:44:30,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 15:44:31,364 INFO L173 IndexEqualityManager]: detected equality via solver [2022-01-18 15:44:31,364 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 141 treesize of output 123 Received shutdown request... [2022-01-18 15:44:32,057 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 15:44:32,059 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 15:44:32,075 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Ended with exit code 0 [2022-01-18 15:44:32,077 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 15:44:32,079 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (161)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 15:44:32,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable281,161 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 15:44:32,260 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. [2022-01-18 15:44:32,261 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 15:44:32,262 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 15:44:32,262 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 15:44:32,264 INFO L732 BasicCegarLoop]: Path program histogram: [130, 90, 12, 12, 6, 6, 6, 6, 6, 4, 2, 2] [2022-01-18 15:44:32,266 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 15:44:32,266 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 15:44:32,268 INFO L202 PluginConnector]: Adding new model word-trans.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:44:32 BasicIcfg [2022-01-18 15:44:32,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 15:44:32,268 INFO L158 Benchmark]: Toolchain (without parser) took 708038.51ms. Allocated memory was 346.0MB in the beginning and 574.6MB in the end (delta: 228.6MB). Free memory was 306.0MB in the beginning and 274.6MB in the end (delta: 31.4MB). Peak memory consumption was 262.0MB. Max. memory is 16.0GB. [2022-01-18 15:44:32,268 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 346.0MB. Free memory is still 307.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 15:44:32,268 INFO L158 Benchmark]: Boogie Procedure Inliner took 28.41ms. Allocated memory is still 346.0MB. Free memory was 306.0MB in the beginning and 304.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 15:44:32,268 INFO L158 Benchmark]: Boogie Preprocessor took 14.69ms. Allocated memory is still 346.0MB. Free memory was 304.4MB in the beginning and 303.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 15:44:32,268 INFO L158 Benchmark]: RCFGBuilder took 256.04ms. Allocated memory is still 346.0MB. Free memory was 303.3MB in the beginning and 290.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 15:44:32,268 INFO L158 Benchmark]: TraceAbstraction took 707731.33ms. Allocated memory was 346.0MB in the beginning and 574.6MB in the end (delta: 228.6MB). Free memory was 290.2MB in the beginning and 274.6MB in the end (delta: 15.6MB). Peak memory consumption was 247.3MB. Max. memory is 16.0GB. [2022-01-18 15:44:32,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 346.0MB. Free memory is still 307.4MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 28.41ms. Allocated memory is still 346.0MB. Free memory was 306.0MB in the beginning and 304.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 14.69ms. Allocated memory is still 346.0MB. Free memory was 304.4MB in the beginning and 303.4MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 256.04ms. Allocated memory is still 346.0MB. Free memory was 303.3MB in the beginning and 290.6MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 707731.33ms. Allocated memory was 346.0MB in the beginning and 574.6MB in the end (delta: 228.6MB). Free memory was 290.2MB in the beginning and 274.6MB in the end (delta: 15.6MB). Peak memory consumption was 247.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - TimeoutResultAtElement [Line: 128]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - TimeoutResultAtElement [Line: 122]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - TimeoutResultAtElement [Line: 121]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - TimeoutResultAtElement [Line: 118]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while BasicCegarLoop was analyzing trace of length 21 with TraceHistMax 1,while TraceCheckSpWp was constructing forward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 3 for 1ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 38 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 707.6s, OverallIterations: 282, TraceHistogramMax: 1, PathProgramHistogramMax: 130, EmptinessCheckTime: 0.2s, AutomataDifference: 210.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 27094 SdHoareTripleChecker+Valid, 53.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 27094 mSDsluCounter, 65346 SdHoareTripleChecker+Invalid, 45.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 30158 IncrementalHoareTripleChecker+Unchecked, 114841 mSDsCounter, 3636 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 118410 IncrementalHoareTripleChecker+Invalid, 152204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3636 mSolverCounterUnsat, 6036 mSDtfsCounter, 118410 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 10872 GetRequests, 4240 SyntacticMatches, 312 SemanticMatches, 6320 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25516 ImplicationChecksByTransitivity, 237.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=728occurred in iteration=280, InterpolantAutomatonStates: 3316, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.6s AutomataMinimizationTime, 281 MinimizatonAttempts, 50031 StatesRemovedByMinimization, 280 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 2.1s SatisfiabilityAnalysisTime, 454.0s InterpolantComputationTime, 8252 NumberOfCodeBlocks, 8252 NumberOfCodeBlocksAsserted, 565 NumberOfCheckSat, 10773 ConstructedInterpolants, 811 QuantifiedInterpolants, 273505 SizeOfPredicates, 3254 NumberOfNonLiveVariables, 12399 ConjunctsInSsa, 3272 ConjunctsInUnsatCore, 599 InterpolantComputations, 136 PerfectInterpolantSequences, 14/1251 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown