/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.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 06:10:41,297 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 06:10:41,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 06:10:41,319 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 06:10:41,348 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.epf [2022-01-18 06:10:41,360 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 06:10:41,361 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 06:10:41,361 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 06:10:41,361 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 06:10:41,362 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 06:10:41,362 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 06:10:41,362 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 06:10:41,362 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 06:10:41,362 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 06:10:41,362 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 06:10:41,363 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 06:10:41,364 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:10:41,364 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 06:10:41,364 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 06:10:41,365 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 06:10:41,365 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 06:10:41,365 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 06:10:41,365 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 06:10:41,365 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 06:10:41,601 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 06:10:41,622 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 06:10:41,625 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 06:10:41,625 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 06:10:41,626 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 06:10:41,627 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl [2022-01-18 06:10:41,627 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20/threaded-sum-3.wvr.bpl' [2022-01-18 06:10:41,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 06:10:41,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 06:10:41,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 06:10:41,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 06:10:41,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 06:10:41,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,672 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,676 INFO L137 Inliner]: procedures = 4, calls = 3, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 06:10:41,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 06:10:41,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 06:10:41,678 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 06:10:41,678 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 06:10:41,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,686 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,689 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,694 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 06:10:41,695 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 06:10:41,695 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 06:10:41,696 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 06:10:41,696 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/1) ... [2022-01-18 06:10:41,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 06:10:41,710 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:41,721 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 06:10:41,726 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 06:10:41,754 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 06:10:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 06:10:41,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 06:10:41,754 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 06:10:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 06:10:41,754 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 06:10:41,754 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 06:10:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 06:10:41,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 06:10:41,755 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 06:10:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 06:10:41,755 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 06:10:41,756 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 06:10:41,798 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 06:10:41,799 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 06:10:41,876 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 06:10:41,906 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 06:10:41,907 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 06:10:41,916 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:10:41 BoogieIcfgContainer [2022-01-18 06:10:41,920 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 06:10:41,922 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 06:10:41,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 06:10:41,924 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 06:10:41,924 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 06:10:41" (1/2) ... [2022-01-18 06:10:41,939 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d305e89 and model type threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 06:10:41, skipping insertion in model container [2022-01-18 06:10:41,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 06:10:41" (2/2) ... [2022-01-18 06:10:41,940 INFO L111 eAbstractionObserver]: Analyzing ICFG threaded-sum-3.wvr.bpl [2022-01-18 06:10:41,944 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 06:10:41,944 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 06:10:41,944 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 06:10:41,944 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 06:10:41,986 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-01-18 06:10:42,038 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 06:10:42,045 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 06:10:42,046 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 06:10:42,057 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 33 transitions, 90 flow [2022-01-18 06:10:42,100 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,107 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 06:10:42,119 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,120 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, 1] [2022-01-18 06:10:42,120 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:42,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,124 INFO L85 PathProgramCache]: Analyzing trace with hash -637092992, now seen corresponding path program 1 times [2022-01-18 06:10:42,130 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583641515] [2022-01-18 06:10:42,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:42,283 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 06:10:42,283 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:42,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583641515] [2022-01-18 06:10:42,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583641515] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:10:42,284 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:10:42,284 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 06:10:42,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749564662] [2022-01-18 06:10:42,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:10:42,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:10:42,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:42,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:10:42,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:10:42,328 INFO L87 Difference]: Start difference. First operand has 136 states, 135 states have (on average 2.7925925925925927) internal successors, (377), 135 states have internal predecessors, (377), 0 states have call successors, (0), 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 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:42,380 INFO L93 Difference]: Finished difference Result 126 states and 331 transitions. [2022-01-18 06:10:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:10:42,382 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-01-18 06:10:42,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:42,393 INFO L225 Difference]: With dead ends: 126 [2022-01-18 06:10:42,394 INFO L226 Difference]: Without dead ends: 126 [2022-01-18 06:10:42,398 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 06:10:42,401 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 37 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:42,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 29 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:10:42,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-01-18 06:10:42,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2022-01-18 06:10:42,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 125 states have (on average 2.648) internal successors, (331), 125 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 331 transitions. [2022-01-18 06:10:42,466 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 331 transitions. Word has length 21 [2022-01-18 06:10:42,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:42,466 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 331 transitions. [2022-01-18 06:10:42,467 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,467 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 331 transitions. [2022-01-18 06:10:42,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-01-18 06:10:42,468 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,468 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, 1, 1, 1, 1] [2022-01-18 06:10:42,468 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 06:10:42,468 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:42,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,469 INFO L85 PathProgramCache]: Analyzing trace with hash -1418210977, now seen corresponding path program 1 times [2022-01-18 06:10:42,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530550701] [2022-01-18 06:10:42,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:42,506 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:42,506 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:42,507 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530550701] [2022-01-18 06:10:42,507 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530550701] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:10:42,507 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:10:42,507 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 06:10:42,507 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568897540] [2022-01-18 06:10:42,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:10:42,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 06:10:42,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 06:10:42,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 06:10:42,511 INFO L87 Difference]: Start difference. First operand 126 states and 331 transitions. Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:42,557 INFO L93 Difference]: Finished difference Result 176 states and 475 transitions. [2022-01-18 06:10:42,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 06:10:42,557 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-01-18 06:10:42,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:42,559 INFO L225 Difference]: With dead ends: 176 [2022-01-18 06:10:42,559 INFO L226 Difference]: Without dead ends: 176 [2022-01-18 06:10:42,559 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 06:10:42,560 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 38 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:42,561 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 34 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:10:42,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-01-18 06:10:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 151. [2022-01-18 06:10:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 150 states have (on average 2.6866666666666665) internal successors, (403), 150 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 403 transitions. [2022-01-18 06:10:42,571 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 403 transitions. Word has length 24 [2022-01-18 06:10:42,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:42,572 INFO L470 AbstractCegarLoop]: Abstraction has 151 states and 403 transitions. [2022-01-18 06:10:42,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 4 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 403 transitions. [2022-01-18 06:10:42,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-01-18 06:10:42,574 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,574 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, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:42,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 06:10:42,575 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:42,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,576 INFO L85 PathProgramCache]: Analyzing trace with hash 365469361, now seen corresponding path program 1 times [2022-01-18 06:10:42,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549370091] [2022-01-18 06:10:42,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:42,615 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:42,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:42,616 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549370091] [2022-01-18 06:10:42,616 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549370091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:10:42,616 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:10:42,616 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 06:10:42,616 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71935012] [2022-01-18 06:10:42,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:10:42,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 06:10:42,617 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:42,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 06:10:42,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:10:42,617 INFO L87 Difference]: Start difference. First operand 151 states and 403 transitions. Second operand has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:42,659 INFO L93 Difference]: Finished difference Result 223 states and 619 transitions. [2022-01-18 06:10:42,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 06:10:42,660 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2022-01-18 06:10:42,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:42,664 INFO L225 Difference]: With dead ends: 223 [2022-01-18 06:10:42,664 INFO L226 Difference]: Without dead ends: 223 [2022-01-18 06:10:42,664 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 06:10:42,668 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 46 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:42,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 34 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:10:42,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2022-01-18 06:10:42,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 223. [2022-01-18 06:10:42,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 222 states have (on average 2.7882882882882885) internal successors, (619), 222 states have internal predecessors, (619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 619 transitions. [2022-01-18 06:10:42,688 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 619 transitions. Word has length 26 [2022-01-18 06:10:42,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:42,688 INFO L470 AbstractCegarLoop]: Abstraction has 223 states and 619 transitions. [2022-01-18 06:10:42,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.2) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,688 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 619 transitions. [2022-01-18 06:10:42,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-01-18 06:10:42,690 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,690 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:42,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 06:10:42,690 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:42,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,691 INFO L85 PathProgramCache]: Analyzing trace with hash 282875335, now seen corresponding path program 1 times [2022-01-18 06:10:42,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609563482] [2022-01-18 06:10:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,691 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:42,732 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:10:42,732 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:42,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609563482] [2022-01-18 06:10:42,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609563482] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 06:10:42,733 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 06:10:42,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 06:10:42,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913905741] [2022-01-18 06:10:42,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 06:10:42,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 06:10:42,733 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:42,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 06:10:42,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-01-18 06:10:42,734 INFO L87 Difference]: Start difference. First operand 223 states and 619 transitions. Second operand has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:42,788 INFO L93 Difference]: Finished difference Result 344 states and 930 transitions. [2022-01-18 06:10:42,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 06:10:42,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-01-18 06:10:42,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:42,790 INFO L225 Difference]: With dead ends: 344 [2022-01-18 06:10:42,790 INFO L226 Difference]: Without dead ends: 308 [2022-01-18 06:10:42,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-01-18 06:10:42,791 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 66 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:42,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 28 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 06:10:42,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2022-01-18 06:10:42,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 235. [2022-01-18 06:10:42,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 235 states, 234 states have (on average 2.8076923076923075) internal successors, (657), 234 states have internal predecessors, (657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 657 transitions. [2022-01-18 06:10:42,804 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 657 transitions. Word has length 28 [2022-01-18 06:10:42,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:42,805 INFO L470 AbstractCegarLoop]: Abstraction has 235 states and 657 transitions. [2022-01-18 06:10:42,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:42,805 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 657 transitions. [2022-01-18 06:10:42,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:10:42,806 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:42,806 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:42,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 06:10:42,806 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:42,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:42,807 INFO L85 PathProgramCache]: Analyzing trace with hash 290186221, now seen corresponding path program 2 times [2022-01-18 06:10:42,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:42,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534204900] [2022-01-18 06:10:42,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:42,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:42,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:42,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:42,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:42,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534204900] [2022-01-18 06:10:42,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534204900] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:42,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147261252] [2022-01-18 06:10:42,928 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:10:42,928 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:42,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:42,930 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 06:10:42,931 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 06:10:42,971 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:10:42,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:42,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 06:10:42,977 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:43,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:43,312 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147261252] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:43,511 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:43,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 20 [2022-01-18 06:10:43,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126636194] [2022-01-18 06:10:43,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:43,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-01-18 06:10:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:43,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-01-18 06:10:43,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=264, Unknown=0, NotChecked=0, Total=380 [2022-01-18 06:10:43,513 INFO L87 Difference]: Start difference. First operand 235 states and 657 transitions. Second operand has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:44,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:44,161 INFO L93 Difference]: Finished difference Result 633 states and 1787 transitions. [2022-01-18 06:10:44,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-01-18 06:10:44,162 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:10:44,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:44,167 INFO L225 Difference]: With dead ends: 633 [2022-01-18 06:10:44,167 INFO L226 Difference]: Without dead ends: 633 [2022-01-18 06:10:44,168 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=526, Invalid=1196, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 06:10:44,169 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 226 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:44,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [226 Valid, 106 Invalid, 501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 06:10:44,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2022-01-18 06:10:44,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 316. [2022-01-18 06:10:44,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 316 states, 315 states have (on average 2.961904761904762) internal successors, (933), 315 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 06:10:44,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 933 transitions. [2022-01-18 06:10:44,183 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 933 transitions. Word has length 30 [2022-01-18 06:10:44,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:44,183 INFO L470 AbstractCegarLoop]: Abstraction has 316 states and 933 transitions. [2022-01-18 06:10:44,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.9) internal successors, (58), 20 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:44,184 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 933 transitions. [2022-01-18 06:10:44,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-01-18 06:10:44,199 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:44,199 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:44,219 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 06:10:44,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:44,404 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:44,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:44,404 INFO L85 PathProgramCache]: Analyzing trace with hash 581986797, now seen corresponding path program 3 times [2022-01-18 06:10:44,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:44,405 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283479176] [2022-01-18 06:10:44,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:44,405 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:44,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:44,476 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:44,476 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:44,477 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283479176] [2022-01-18 06:10:44,478 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283479176] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:44,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301215687] [2022-01-18 06:10:44,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:10:44,478 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:44,478 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:44,479 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 06:10:44,480 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 06:10:44,504 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:10:44,504 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:44,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 06:10:44,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:44,591 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:44,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:44,949 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:44,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [301215687] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:44,950 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:44,950 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 17 [2022-01-18 06:10:44,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276316590] [2022-01-18 06:10:44,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:44,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 06:10:44,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:44,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 06:10:44,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2022-01-18 06:10:44,952 INFO L87 Difference]: Start difference. First operand 316 states and 933 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:45,254 INFO L93 Difference]: Finished difference Result 861 states and 2534 transitions. [2022-01-18 06:10:45,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 06:10:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2022-01-18 06:10:45,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:45,258 INFO L225 Difference]: With dead ends: 861 [2022-01-18 06:10:45,258 INFO L226 Difference]: Without dead ends: 861 [2022-01-18 06:10:45,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=279, Invalid=591, Unknown=0, NotChecked=0, Total=870 [2022-01-18 06:10:45,259 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 297 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:45,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [297 Valid, 107 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:10:45,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-01-18 06:10:45,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 588. [2022-01-18 06:10:45,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 587 states have (on average 3.06984667802385) internal successors, (1802), 587 states have internal predecessors, (1802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:45,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 1802 transitions. [2022-01-18 06:10:45,276 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 1802 transitions. Word has length 30 [2022-01-18 06:10:45,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:45,276 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 1802 transitions. [2022-01-18 06:10:45,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:45,276 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 1802 transitions. [2022-01-18 06:10:45,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 06:10:45,278 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:45,278 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:45,297 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 06:10:45,491 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,SelfDestructingSolverStorable5 [2022-01-18 06:10:45,492 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:45,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:45,492 INFO L85 PathProgramCache]: Analyzing trace with hash -101147565, now seen corresponding path program 4 times [2022-01-18 06:10:45,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:45,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [103355469] [2022-01-18 06:10:45,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:45,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:45,613 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:45,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [103355469] [2022-01-18 06:10:45,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [103355469] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:45,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [384611162] [2022-01-18 06:10:45,614 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:10:45,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:45,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:45,616 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 06:10:45,635 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 06:10:45,651 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:10:45,652 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:45,652 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 06:10:45,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:45,762 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:46,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:46,149 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [384611162] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:46,149 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:46,149 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 23 [2022-01-18 06:10:46,149 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493388148] [2022-01-18 06:10:46,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:46,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-01-18 06:10:46,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:46,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-01-18 06:10:46,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=355, Unknown=0, NotChecked=0, Total=506 [2022-01-18 06:10:46,150 INFO L87 Difference]: Start difference. First operand 588 states and 1802 transitions. Second operand has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:46,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:46,854 INFO L93 Difference]: Finished difference Result 975 states and 2760 transitions. [2022-01-18 06:10:46,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-01-18 06:10:46,855 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 06:10:46,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:46,859 INFO L225 Difference]: With dead ends: 975 [2022-01-18 06:10:46,859 INFO L226 Difference]: Without dead ends: 975 [2022-01-18 06:10:46,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 48 SyntacticMatches, 5 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 707 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=581, Invalid=1581, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:10:46,860 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 242 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:46,861 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 184 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 06:10:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-01-18 06:10:46,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 710. [2022-01-18 06:10:46,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 709 states have (on average 3.011283497884344) internal successors, (2135), 709 states have internal predecessors, (2135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:46,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 2135 transitions. [2022-01-18 06:10:46,880 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 2135 transitions. Word has length 32 [2022-01-18 06:10:46,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:46,881 INFO L470 AbstractCegarLoop]: Abstraction has 710 states and 2135 transitions. [2022-01-18 06:10:46,881 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 2.4782608695652173) internal successors, (57), 23 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:46,881 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 2135 transitions. [2022-01-18 06:10:46,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 06:10:46,882 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:46,883 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:46,902 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 06:10:47,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:47,100 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:47,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:47,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1192213421, now seen corresponding path program 5 times [2022-01-18 06:10:47,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:47,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753311604] [2022-01-18 06:10:47,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:47,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:47,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:47,199 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:47,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:47,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753311604] [2022-01-18 06:10:47,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753311604] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:47,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669252380] [2022-01-18 06:10:47,199 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:10:47,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:47,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:47,201 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 06:10:47,202 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 06:10:47,231 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 06:10:47,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:47,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 06:10:47,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:47,385 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:47,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:47,705 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:47,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669252380] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:47,706 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:47,706 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 12] total 25 [2022-01-18 06:10:47,706 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206318365] [2022-01-18 06:10:47,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:47,706 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-01-18 06:10:47,706 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:47,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-01-18 06:10:47,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2022-01-18 06:10:47,707 INFO L87 Difference]: Start difference. First operand 710 states and 2135 transitions. Second operand has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:49,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:49,408 INFO L93 Difference]: Finished difference Result 1943 states and 5560 transitions. [2022-01-18 06:10:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2022-01-18 06:10:49,409 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 06:10:49,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:49,416 INFO L225 Difference]: With dead ends: 1943 [2022-01-18 06:10:49,417 INFO L226 Difference]: Without dead ends: 1943 [2022-01-18 06:10:49,418 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2574 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1583, Invalid=5557, Unknown=0, NotChecked=0, Total=7140 [2022-01-18 06:10:49,419 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 278 mSDsluCounter, 430 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 278 SdHoareTripleChecker+Valid, 329 SdHoareTripleChecker+Invalid, 1099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:49,419 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [278 Valid, 329 Invalid, 1099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 06:10:49,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1943 states. [2022-01-18 06:10:49,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1943 to 826. [2022-01-18 06:10:49,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 826 states, 825 states have (on average 3.0715151515151513) internal successors, (2534), 825 states have internal predecessors, (2534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:49,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 826 states to 826 states and 2534 transitions. [2022-01-18 06:10:49,449 INFO L78 Accepts]: Start accepts. Automaton has 826 states and 2534 transitions. Word has length 32 [2022-01-18 06:10:49,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:49,449 INFO L470 AbstractCegarLoop]: Abstraction has 826 states and 2534 transitions. [2022-01-18 06:10:49,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.4) internal successors, (60), 25 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:49,449 INFO L276 IsEmpty]: Start isEmpty. Operand 826 states and 2534 transitions. [2022-01-18 06:10:49,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 06:10:49,452 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:49,452 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:49,469 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 06:10:49,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:49,669 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:49,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:49,670 INFO L85 PathProgramCache]: Analyzing trace with hash -1582175149, now seen corresponding path program 6 times [2022-01-18 06:10:49,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:49,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562280729] [2022-01-18 06:10:49,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:49,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:49,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:49,758 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:49,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:49,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562280729] [2022-01-18 06:10:49,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562280729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:49,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477550663] [2022-01-18 06:10:49,758 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:10:49,758 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:49,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:49,759 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 06:10:49,760 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 06:10:49,783 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:10:49,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:49,783 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 06:10:49,784 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:50,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:50,316 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:50,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477550663] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:50,317 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:50,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 10, 11] total 26 [2022-01-18 06:10:50,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712652624] [2022-01-18 06:10:50,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:50,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:10:50,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:50,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:10:50,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=181, Invalid=469, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:10:50,318 INFO L87 Difference]: Start difference. First operand 826 states and 2534 transitions. Second operand has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:52,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:52,616 INFO L93 Difference]: Finished difference Result 2939 states and 8774 transitions. [2022-01-18 06:10:52,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 06:10:52,617 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 06:10:52,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:52,628 INFO L225 Difference]: With dead ends: 2939 [2022-01-18 06:10:52,629 INFO L226 Difference]: Without dead ends: 2939 [2022-01-18 06:10:52,631 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 48 SyntacticMatches, 2 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4324 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=2652, Invalid=8060, Unknown=0, NotChecked=0, Total=10712 [2022-01-18 06:10:52,632 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 411 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1024 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:52,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 295 Invalid, 1223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1024 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 06:10:52,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2939 states. [2022-01-18 06:10:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2939 to 1137. [2022-01-18 06:10:52,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1137 states, 1136 states have (on average 3.1778169014084505) internal successors, (3610), 1136 states have internal predecessors, (3610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:52,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1137 states to 1137 states and 3610 transitions. [2022-01-18 06:10:52,676 INFO L78 Accepts]: Start accepts. Automaton has 1137 states and 3610 transitions. Word has length 32 [2022-01-18 06:10:52,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:52,678 INFO L470 AbstractCegarLoop]: Abstraction has 1137 states and 3610 transitions. [2022-01-18 06:10:52,678 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.3461538461538463) internal successors, (61), 26 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:52,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1137 states and 3610 transitions. [2022-01-18 06:10:52,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 06:10:52,681 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:52,681 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:52,700 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 06:10:52,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:52,895 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash 1367115515, now seen corresponding path program 7 times [2022-01-18 06:10:52,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:52,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513966433] [2022-01-18 06:10:52,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:52,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:53,013 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:53,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:53,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513966433] [2022-01-18 06:10:53,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513966433] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:53,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549593927] [2022-01-18 06:10:53,013 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:10:53,013 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:53,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:53,014 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 06:10:53,016 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 06:10:53,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:53,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 13 conjunts are in the unsatisfiable core [2022-01-18 06:10:53,041 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:53,188 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:53,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:53,780 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:53,780 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549593927] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:53,780 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:53,780 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 26 [2022-01-18 06:10:53,780 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020994465] [2022-01-18 06:10:53,780 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:53,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-01-18 06:10:53,781 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:53,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-01-18 06:10:53,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=499, Unknown=0, NotChecked=0, Total=650 [2022-01-18 06:10:53,781 INFO L87 Difference]: Start difference. First operand 1137 states and 3610 transitions. Second operand has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:55,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:55,304 INFO L93 Difference]: Finished difference Result 4727 states and 14426 transitions. [2022-01-18 06:10:55,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 06:10:55,305 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2022-01-18 06:10:55,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:55,326 INFO L225 Difference]: With dead ends: 4727 [2022-01-18 06:10:55,326 INFO L226 Difference]: Without dead ends: 4727 [2022-01-18 06:10:55,327 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 46 SyntacticMatches, 5 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1386 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1162, Invalid=3128, Unknown=0, NotChecked=0, Total=4290 [2022-01-18 06:10:55,328 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 554 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 567 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 567 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:55,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [554 Valid, 222 Invalid, 743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 567 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 06:10:55,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4727 states. [2022-01-18 06:10:55,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4727 to 2168. [2022-01-18 06:10:55,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 2167 states have (on average 3.2459621596677435) internal successors, (7034), 2167 states have internal predecessors, (7034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:55,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 7034 transitions. [2022-01-18 06:10:55,397 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 7034 transitions. Word has length 32 [2022-01-18 06:10:55,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:55,397 INFO L470 AbstractCegarLoop]: Abstraction has 2168 states and 7034 transitions. [2022-01-18 06:10:55,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 2.230769230769231) internal successors, (58), 26 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 7034 transitions. [2022-01-18 06:10:55,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2022-01-18 06:10:55,402 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:55,402 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:55,419 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 06:10:55,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:55,616 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:55,616 INFO L85 PathProgramCache]: Analyzing trace with hash 1458806875, now seen corresponding path program 8 times [2022-01-18 06:10:55,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:55,616 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809728501] [2022-01-18 06:10:55,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:55,616 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:55,685 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:10:55,685 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:55,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809728501] [2022-01-18 06:10:55,685 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809728501] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:55,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1832487305] [2022-01-18 06:10:55,685 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:10:55,685 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:55,686 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:55,687 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 06:10:55,687 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 06:10:55,709 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:10:55,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:55,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 06:10:55,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:55,804 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-01-18 06:10:55,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:56,202 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:56,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1832487305] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:56,202 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:56,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 11] total 18 [2022-01-18 06:10:56,202 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787674169] [2022-01-18 06:10:56,202 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:56,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 06:10:56,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:56,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 06:10:56,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-01-18 06:10:56,203 INFO L87 Difference]: Start difference. First operand 2168 states and 7034 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 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 06:10:56,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:10:56,316 INFO L93 Difference]: Finished difference Result 2799 states and 8918 transitions. [2022-01-18 06:10:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 06:10:56,317 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 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 32 [2022-01-18 06:10:56,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:10:56,328 INFO L225 Difference]: With dead ends: 2799 [2022-01-18 06:10:56,328 INFO L226 Difference]: Without dead ends: 2799 [2022-01-18 06:10:56,329 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=361, Unknown=0, NotChecked=0, Total=506 [2022-01-18 06:10:56,329 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 349 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:10:56,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [349 Valid, 68 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 06:10:56,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2799 states. [2022-01-18 06:10:56,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2799 to 2149. [2022-01-18 06:10:56,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 2148 states have (on average 3.241154562383613) internal successors, (6962), 2148 states have internal predecessors, (6962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:10:56,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 6962 transitions. [2022-01-18 06:10:56,380 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 6962 transitions. Word has length 32 [2022-01-18 06:10:56,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:10:56,380 INFO L470 AbstractCegarLoop]: Abstraction has 2149 states and 6962 transitions. [2022-01-18 06:10:56,380 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 18 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 06:10:56,380 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 6962 transitions. [2022-01-18 06:10:56,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:10:56,385 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:10:56,385 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:10:56,405 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 06:10:56,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:56,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:10:56,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:10:56,603 INFO L85 PathProgramCache]: Analyzing trace with hash 412803505, now seen corresponding path program 9 times [2022-01-18 06:10:56,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:10:56,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063656376] [2022-01-18 06:10:56,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:10:56,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:10:56,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:10:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:10:56,928 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:10:56,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063656376] [2022-01-18 06:10:56,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063656376] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:10:56,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28995929] [2022-01-18 06:10:56,929 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:10:56,929 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:10:56,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:10:56,930 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 06:10:56,930 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 06:10:56,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:10:56,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:10:56,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 06:10:56,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:10:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:57,799 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:10:59,416 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:10:59,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28995929] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:10:59,417 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:10:59,417 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 06:10:59,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607402956] [2022-01-18 06:10:59,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:10:59,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:10:59,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:10:59,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:10:59,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=347, Invalid=1815, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:10:59,418 INFO L87 Difference]: Start difference. First operand 2149 states and 6962 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:10,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:10,603 INFO L93 Difference]: Finished difference Result 7861 states and 24237 transitions. [2022-01-18 06:11:10,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 152 states. [2022-01-18 06:11:10,604 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:11:10,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:10,622 INFO L225 Difference]: With dead ends: 7861 [2022-01-18 06:11:10,622 INFO L226 Difference]: Without dead ends: 7696 [2022-01-18 06:11:10,627 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 165 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10002 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=4125, Invalid=23597, Unknown=0, NotChecked=0, Total=27722 [2022-01-18 06:11:10,627 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 828 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 4354 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 828 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 4826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 4354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:10,627 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [828 Valid, 505 Invalid, 4826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 4354 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 06:11:10,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7696 states. [2022-01-18 06:11:10,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7696 to 2969. [2022-01-18 06:11:10,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2968 states have (on average 3.253369272237197) internal successors, (9656), 2968 states have internal predecessors, (9656), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:10,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 9656 transitions. [2022-01-18 06:11:10,721 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 9656 transitions. Word has length 34 [2022-01-18 06:11:10,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:10,721 INFO L470 AbstractCegarLoop]: Abstraction has 2969 states and 9656 transitions. [2022-01-18 06:11:10,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 9656 transitions. [2022-01-18 06:11:10,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:11:10,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:10,727 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:10,745 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 06:11:10,943 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,SelfDestructingSolverStorable11 [2022-01-18 06:11:10,943 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:10,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash 971839921, now seen corresponding path program 10 times [2022-01-18 06:11:10,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:10,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331952186] [2022-01-18 06:11:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:10,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:10,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:11,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:11,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331952186] [2022-01-18 06:11:11,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331952186] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356738575] [2022-01-18 06:11:11,247 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:11:11,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:11,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:11,247 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 06:11:11,248 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 06:11:11,271 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:11:11,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:11,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 06:11:11,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:12,183 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:12,183 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:13,252 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:13,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356738575] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:13,252 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:13,252 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 06:11:13,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212345774] [2022-01-18 06:11:13,252 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:13,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:11:13,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:13,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:11:13,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=2215, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:11:13,254 INFO L87 Difference]: Start difference. First operand 2969 states and 9656 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:27,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:27,586 INFO L93 Difference]: Finished difference Result 10912 states and 33148 transitions. [2022-01-18 06:11:27,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 207 states. [2022-01-18 06:11:27,587 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:11:27,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:27,625 INFO L225 Difference]: With dead ends: 10912 [2022-01-18 06:11:27,625 INFO L226 Difference]: Without dead ends: 10686 [2022-01-18 06:11:27,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21166 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=9279, Invalid=42477, Unknown=0, NotChecked=0, Total=51756 [2022-01-18 06:11:27,629 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 1151 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 3541 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1151 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 4259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 3541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:27,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1151 Valid, 698 Invalid, 4259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 3541 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:11:27,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10686 states. [2022-01-18 06:11:27,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10686 to 3913. [2022-01-18 06:11:27,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3913 states, 3912 states have (on average 3.280930470347648) internal successors, (12835), 3912 states have internal predecessors, (12835), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:27,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3913 states to 3913 states and 12835 transitions. [2022-01-18 06:11:27,776 INFO L78 Accepts]: Start accepts. Automaton has 3913 states and 12835 transitions. Word has length 34 [2022-01-18 06:11:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:27,777 INFO L470 AbstractCegarLoop]: Abstraction has 3913 states and 12835 transitions. [2022-01-18 06:11:27,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:27,777 INFO L276 IsEmpty]: Start isEmpty. Operand 3913 states and 12835 transitions. [2022-01-18 06:11:27,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:11:27,786 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:27,786 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:27,805 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 06:11:27,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 06:11:27,998 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:27,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:27,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1964333485, now seen corresponding path program 11 times [2022-01-18 06:11:27,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:27,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770626797] [2022-01-18 06:11:27,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:27,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:28,302 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:28,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:28,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770626797] [2022-01-18 06:11:28,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770626797] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:28,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646961704] [2022-01-18 06:11:28,302 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:11:28,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:28,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:28,303 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 06:11:28,304 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 06:11:28,328 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:11:28,328 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:28,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 06:11:28,330 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:29,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:29,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:30,187 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:30,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646961704] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:30,187 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:30,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 06:11:30,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321637855] [2022-01-18 06:11:30,188 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:30,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:11:30,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:30,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:11:30,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=433, Invalid=2219, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:11:30,189 INFO L87 Difference]: Start difference. First operand 3913 states and 12835 transitions. Second operand has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:43,419 INFO L93 Difference]: Finished difference Result 11044 states and 33819 transitions. [2022-01-18 06:11:43,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 06:11:43,420 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:11:43,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:43,446 INFO L225 Difference]: With dead ends: 11044 [2022-01-18 06:11:43,446 INFO L226 Difference]: Without dead ends: 10842 [2022-01-18 06:11:43,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 242 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25049 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=10854, Invalid=48438, Unknown=0, NotChecked=0, Total=59292 [2022-01-18 06:11:43,450 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 1206 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 723 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 5389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 723 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:43,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1206 Valid, 686 Invalid, 5389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [723 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 06:11:43,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10842 states. [2022-01-18 06:11:43,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10842 to 4299. [2022-01-18 06:11:43,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4299 states, 4298 states have (on average 3.3187529083294556) internal successors, (14264), 4298 states have internal predecessors, (14264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:43,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4299 states to 4299 states and 14264 transitions. [2022-01-18 06:11:43,641 INFO L78 Accepts]: Start accepts. Automaton has 4299 states and 14264 transitions. Word has length 34 [2022-01-18 06:11:43,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:43,641 INFO L470 AbstractCegarLoop]: Abstraction has 4299 states and 14264 transitions. [2022-01-18 06:11:43,641 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.75) internal successors, (91), 51 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:43,642 INFO L276 IsEmpty]: Start isEmpty. Operand 4299 states and 14264 transitions. [2022-01-18 06:11:43,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:11:43,650 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:43,650 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:43,667 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 06:11:43,867 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,SelfDestructingSolverStorable13 [2022-01-18 06:11:43,867 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:43,868 INFO L85 PathProgramCache]: Analyzing trace with hash -1613065811, now seen corresponding path program 12 times [2022-01-18 06:11:43,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:43,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021194531] [2022-01-18 06:11:43,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:43,868 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:44,176 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:44,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:44,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021194531] [2022-01-18 06:11:44,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021194531] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:44,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764351197] [2022-01-18 06:11:44,176 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:11:44,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:44,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:44,178 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 06:11:44,179 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 06:11:44,206 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:11:44,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:11:44,206 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 06:11:44,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:11:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:45,042 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:11:46,094 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:46,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764351197] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:11:46,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:11:46,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 18] total 48 [2022-01-18 06:11:46,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569518053] [2022-01-18 06:11:46,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:11:46,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 06:11:46,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:11:46,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 06:11:46,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=436, Invalid=1916, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:11:46,096 INFO L87 Difference]: Start difference. First operand 4299 states and 14264 transitions. Second operand has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:59,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:11:59,102 INFO L93 Difference]: Finished difference Result 10733 states and 33404 transitions. [2022-01-18 06:11:59,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 209 states. [2022-01-18 06:11:59,102 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:11:59,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:11:59,121 INFO L225 Difference]: With dead ends: 10733 [2022-01-18 06:11:59,121 INFO L226 Difference]: Without dead ends: 10515 [2022-01-18 06:11:59,123 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 224 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20891 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=9352, Invalid=41498, Unknown=0, NotChecked=0, Total=50850 [2022-01-18 06:11:59,123 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1236 mSDsluCounter, 912 mSDsCounter, 0 mSdLazyCounter, 4492 mSolverCounterSat, 599 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 745 SdHoareTripleChecker+Invalid, 5091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 599 IncrementalHoareTripleChecker+Valid, 4492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:11:59,124 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 745 Invalid, 5091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [599 Valid, 4492 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-01-18 06:11:59,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10515 states. [2022-01-18 06:11:59,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10515 to 3833. [2022-01-18 06:11:59,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3833 states, 3832 states have (on average 3.2917536534446765) internal successors, (12614), 3832 states have internal predecessors, (12614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:59,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3833 states to 3833 states and 12614 transitions. [2022-01-18 06:11:59,258 INFO L78 Accepts]: Start accepts. Automaton has 3833 states and 12614 transitions. Word has length 34 [2022-01-18 06:11:59,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:11:59,258 INFO L470 AbstractCegarLoop]: Abstraction has 3833 states and 12614 transitions. [2022-01-18 06:11:59,258 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.8571428571428572) internal successors, (91), 48 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:11:59,258 INFO L276 IsEmpty]: Start isEmpty. Operand 3833 states and 12614 transitions. [2022-01-18 06:11:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:11:59,267 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:11:59,267 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:11:59,286 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 06:11:59,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-01-18 06:11:59,483 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:11:59,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:11:59,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1621951143, now seen corresponding path program 13 times [2022-01-18 06:11:59,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:11:59,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966519682] [2022-01-18 06:11:59,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:11:59,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:11:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:59,736 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:11:59,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:11:59,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966519682] [2022-01-18 06:11:59,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966519682] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:11:59,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474662166] [2022-01-18 06:11:59,737 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:11:59,737 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:11:59,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:11:59,738 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 06:11:59,738 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 06:11:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:11:59,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 06:11:59,765 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:00,655 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:00,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:02,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1474662166] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:02,799 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:02,799 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 18] total 50 [2022-01-18 06:12:02,799 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075192524] [2022-01-18 06:12:02,799 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:02,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-01-18 06:12:02,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:02,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-01-18 06:12:02,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=2166, Unknown=0, NotChecked=0, Total=2550 [2022-01-18 06:12:02,800 INFO L87 Difference]: Start difference. First operand 3833 states and 12614 transitions. Second operand has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:15,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:15,666 INFO L93 Difference]: Finished difference Result 10462 states and 32329 transitions. [2022-01-18 06:12:15,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 125 states. [2022-01-18 06:12:15,666 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:12:15,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:15,687 INFO L225 Difference]: With dead ends: 10462 [2022-01-18 06:12:15,687 INFO L226 Difference]: Without dead ends: 10307 [2022-01-18 06:12:15,688 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 32 SyntacticMatches, 4 SemanticMatches, 146 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7919 ImplicationChecksByTransitivity, 12.5s TimeCoverageRelationStatistics Valid=3778, Invalid=17978, Unknown=0, NotChecked=0, Total=21756 [2022-01-18 06:12:15,688 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 682 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 2771 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 682 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 2771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:15,689 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [682 Valid, 598 Invalid, 3123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 2771 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 06:12:15,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10307 states. [2022-01-18 06:12:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10307 to 4521. [2022-01-18 06:12:15,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4521 states, 4520 states have (on average 3.308628318584071) internal successors, (14955), 4520 states have internal predecessors, (14955), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:15,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4521 states to 4521 states and 14955 transitions. [2022-01-18 06:12:15,808 INFO L78 Accepts]: Start accepts. Automaton has 4521 states and 14955 transitions. Word has length 34 [2022-01-18 06:12:15,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:15,808 INFO L470 AbstractCegarLoop]: Abstraction has 4521 states and 14955 transitions. [2022-01-18 06:12:15,808 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 51 states have (on average 1.7843137254901962) internal successors, (91), 50 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:15,808 INFO L276 IsEmpty]: Start isEmpty. Operand 4521 states and 14955 transitions. [2022-01-18 06:12:15,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:12:15,816 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:15,816 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:15,832 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 06:12:16,028 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,SelfDestructingSolverStorable15 [2022-01-18 06:12:16,028 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:16,029 INFO L85 PathProgramCache]: Analyzing trace with hash 596520025, now seen corresponding path program 14 times [2022-01-18 06:12:16,029 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:16,029 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921639948] [2022-01-18 06:12:16,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:16,029 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:16,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:16,285 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:16,285 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:16,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921639948] [2022-01-18 06:12:16,285 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921639948] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:16,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [490972537] [2022-01-18 06:12:16,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:12:16,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:16,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:16,286 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 06:12:16,287 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 06:12:16,309 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:12:16,309 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:16,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 21 conjunts are in the unsatisfiable core [2022-01-18 06:12:16,311 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:17,081 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:17,082 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:18,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [490972537] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:18,476 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:18,476 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 16, 17] total 47 [2022-01-18 06:12:18,476 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407522246] [2022-01-18 06:12:18,476 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:18,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2022-01-18 06:12:18,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2022-01-18 06:12:18,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=1896, Unknown=0, NotChecked=0, Total=2256 [2022-01-18 06:12:18,477 INFO L87 Difference]: Start difference. First operand 4521 states and 14955 transitions. Second operand has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:33,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:33,742 INFO L93 Difference]: Finished difference Result 11942 states and 37849 transitions. [2022-01-18 06:12:33,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 212 states. [2022-01-18 06:12:33,742 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:12:33,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:33,764 INFO L225 Difference]: With dead ends: 11942 [2022-01-18 06:12:33,764 INFO L226 Difference]: Without dead ends: 11777 [2022-01-18 06:12:33,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 226 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20629 ImplicationChecksByTransitivity, 13.5s TimeCoverageRelationStatistics Valid=7611, Invalid=44145, Unknown=0, NotChecked=0, Total=51756 [2022-01-18 06:12:33,767 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 865 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 5286 mSolverCounterSat, 481 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 865 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 5767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 481 IncrementalHoareTripleChecker+Valid, 5286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:33,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [865 Valid, 570 Invalid, 5767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [481 Valid, 5286 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-01-18 06:12:33,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11777 states. [2022-01-18 06:12:33,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11777 to 4932. [2022-01-18 06:12:33,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4932 states, 4931 states have (on average 3.3050091259379437) internal successors, (16297), 4931 states have internal predecessors, (16297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:33,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4932 states to 4932 states and 16297 transitions. [2022-01-18 06:12:33,916 INFO L78 Accepts]: Start accepts. Automaton has 4932 states and 16297 transitions. Word has length 34 [2022-01-18 06:12:33,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:33,916 INFO L470 AbstractCegarLoop]: Abstraction has 4932 states and 16297 transitions. [2022-01-18 06:12:33,916 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 1.8958333333333333) internal successors, (91), 47 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:33,916 INFO L276 IsEmpty]: Start isEmpty. Operand 4932 states and 16297 transitions. [2022-01-18 06:12:33,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:12:33,924 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:33,924 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:33,942 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 06:12:34,126 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,SelfDestructingSolverStorable16 [2022-01-18 06:12:34,126 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:34,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:34,126 INFO L85 PathProgramCache]: Analyzing trace with hash -1798267431, now seen corresponding path program 15 times [2022-01-18 06:12:34,126 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:34,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100768527] [2022-01-18 06:12:34,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:34,127 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:34,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:34,389 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:34,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:34,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100768527] [2022-01-18 06:12:34,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100768527] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:34,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2049001789] [2022-01-18 06:12:34,389 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:12:34,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:34,390 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:34,390 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 06:12:34,391 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 06:12:34,415 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:12:34,415 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:34,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 06:12:34,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:35,184 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:35,184 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:36,523 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:36,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2049001789] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:36,523 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:36,523 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 06:12:36,523 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52079377] [2022-01-18 06:12:36,523 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:36,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:12:36,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:36,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:12:36,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=366, Invalid=1796, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:12:36,524 INFO L87 Difference]: Start difference. First operand 4932 states and 16297 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:50,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:12:50,800 INFO L93 Difference]: Finished difference Result 16468 states and 52786 transitions. [2022-01-18 06:12:50,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2022-01-18 06:12:50,800 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:12:50,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:12:50,835 INFO L225 Difference]: With dead ends: 16468 [2022-01-18 06:12:50,835 INFO L226 Difference]: Without dead ends: 16303 [2022-01-18 06:12:50,836 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 199 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14557 ImplicationChecksByTransitivity, 12.7s TimeCoverageRelationStatistics Valid=7548, Invalid=32652, Unknown=0, NotChecked=0, Total=40200 [2022-01-18 06:12:50,837 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 764 mSDsluCounter, 690 mSDsCounter, 0 mSdLazyCounter, 4307 mSolverCounterSat, 462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 510 SdHoareTripleChecker+Invalid, 4769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 462 IncrementalHoareTripleChecker+Valid, 4307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:12:50,837 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [764 Valid, 510 Invalid, 4769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [462 Valid, 4307 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 06:12:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16303 states. [2022-01-18 06:12:51,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16303 to 6713. [2022-01-18 06:12:51,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6713 states, 6712 states have (on average 3.362485101311085) internal successors, (22569), 6712 states have internal predecessors, (22569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 22569 transitions. [2022-01-18 06:12:51,065 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 22569 transitions. Word has length 34 [2022-01-18 06:12:51,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:12:51,066 INFO L470 AbstractCegarLoop]: Abstraction has 6713 states and 22569 transitions. [2022-01-18 06:12:51,066 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:12:51,066 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 22569 transitions. [2022-01-18 06:12:51,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:12:51,079 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:12:51,079 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:12:51,098 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 06:12:51,299 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:51,299 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:12:51,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:12:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 342899377, now seen corresponding path program 16 times [2022-01-18 06:12:51,300 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:12:51,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314041215] [2022-01-18 06:12:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:12:51,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:12:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:12:51,541 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:51,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:12:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314041215] [2022-01-18 06:12:51,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314041215] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:12:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [474022265] [2022-01-18 06:12:51,542 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:12:51,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:12:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:12:51,543 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 06:12:51,545 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 06:12:51,568 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:12:51,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:12:51,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:12:51,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:12:52,378 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:52,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:12:55,067 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:12:55,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [474022265] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:12:55,067 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:12:55,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:12:55,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001954934] [2022-01-18 06:12:55,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:12:55,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:12:55,068 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:12:55,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:12:55,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=1809, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:12:55,068 INFO L87 Difference]: Start difference. First operand 6713 states and 22569 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:00,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:00,773 INFO L93 Difference]: Finished difference Result 12518 states and 40141 transitions. [2022-01-18 06:13:00,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 78 states. [2022-01-18 06:13:00,774 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:13:00,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:00,794 INFO L225 Difference]: With dead ends: 12518 [2022-01-18 06:13:00,794 INFO L226 Difference]: Without dead ends: 12273 [2022-01-18 06:13:00,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2643 ImplicationChecksByTransitivity, 5.4s TimeCoverageRelationStatistics Valid=1649, Invalid=7471, Unknown=0, NotChecked=0, Total=9120 [2022-01-18 06:13:00,795 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 560 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 2666 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 560 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 2666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:00,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [560 Valid, 451 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 2666 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-01-18 06:13:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12273 states. [2022-01-18 06:13:00,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12273 to 6834. [2022-01-18 06:13:00,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6834 states, 6833 states have (on average 3.3647007171081516) internal successors, (22991), 6833 states have internal predecessors, (22991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:00,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6834 states to 6834 states and 22991 transitions. [2022-01-18 06:13:00,955 INFO L78 Accepts]: Start accepts. Automaton has 6834 states and 22991 transitions. Word has length 34 [2022-01-18 06:13:00,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:00,955 INFO L470 AbstractCegarLoop]: Abstraction has 6834 states and 22991 transitions. [2022-01-18 06:13:00,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:00,956 INFO L276 IsEmpty]: Start isEmpty. Operand 6834 states and 22991 transitions. [2022-01-18 06:13:00,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:13:00,968 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:00,968 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:00,985 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 06:13:01,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:01,183 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:01,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1264601517, now seen corresponding path program 17 times [2022-01-18 06:13:01,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:01,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155283415] [2022-01-18 06:13:01,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:01,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:01,446 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:01,447 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:01,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155283415] [2022-01-18 06:13:01,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155283415] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:01,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [252414082] [2022-01-18 06:13:01,447 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:13:01,447 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:01,447 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:01,448 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 06:13:01,449 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 06:13:01,471 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:13:01,472 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:01,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:13:01,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:02,242 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:02,242 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:04,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [252414082] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:04,905 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:04,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:13:04,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37596773] [2022-01-18 06:13:04,906 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:04,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:13:04,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:04,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:13:04,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=1790, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:13:04,906 INFO L87 Difference]: Start difference. First operand 6834 states and 22991 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:12,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:12,047 INFO L93 Difference]: Finished difference Result 14485 states and 46677 transitions. [2022-01-18 06:13:12,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 93 states. [2022-01-18 06:13:12,048 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:13:12,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:12,075 INFO L225 Difference]: With dead ends: 14485 [2022-01-18 06:13:12,075 INFO L226 Difference]: Without dead ends: 14245 [2022-01-18 06:13:12,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3774 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=2257, Invalid=9733, Unknown=0, NotChecked=0, Total=11990 [2022-01-18 06:13:12,076 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 602 mSDsluCounter, 553 mSDsCounter, 0 mSdLazyCounter, 2916 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 602 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 3258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 2916 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:12,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [602 Valid, 394 Invalid, 3258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 2916 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 06:13:12,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14245 states. [2022-01-18 06:13:12,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14245 to 6800. [2022-01-18 06:13:12,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6800 states, 6799 states have (on average 3.3582879835269894) internal successors, (22833), 6799 states have internal predecessors, (22833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:12,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6800 states to 6800 states and 22833 transitions. [2022-01-18 06:13:12,259 INFO L78 Accepts]: Start accepts. Automaton has 6800 states and 22833 transitions. Word has length 34 [2022-01-18 06:13:12,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:12,260 INFO L470 AbstractCegarLoop]: Abstraction has 6800 states and 22833 transitions. [2022-01-18 06:13:12,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:12,260 INFO L276 IsEmpty]: Start isEmpty. Operand 6800 states and 22833 transitions. [2022-01-18 06:13:12,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:13:12,272 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:12,272 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:12,305 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 06:13:12,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:12,489 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:12,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:12,489 INFO L85 PathProgramCache]: Analyzing trace with hash 1194491481, now seen corresponding path program 18 times [2022-01-18 06:13:12,489 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:12,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442208714] [2022-01-18 06:13:12,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:12,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:12,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:12,740 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:12,740 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:12,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442208714] [2022-01-18 06:13:12,741 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442208714] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:12,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1084108494] [2022-01-18 06:13:12,741 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:13:12,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:12,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:12,742 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 06:13:12,742 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 06:13:12,763 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:13:12,763 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:12,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:13:12,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:13,508 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:13,509 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:16,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:16,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1084108494] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:16,120 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:16,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 06:13:16,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369745159] [2022-01-18 06:13:16,120 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:16,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:13:16,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:16,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:13:16,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=350, Invalid=1630, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:13:16,121 INFO L87 Difference]: Start difference. First operand 6800 states and 22833 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:22,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:22,718 INFO L93 Difference]: Finished difference Result 11835 states and 38385 transitions. [2022-01-18 06:13:22,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-01-18 06:13:22,718 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:13:22,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:22,738 INFO L225 Difference]: With dead ends: 11835 [2022-01-18 06:13:22,738 INFO L226 Difference]: Without dead ends: 11595 [2022-01-18 06:13:22,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2636 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=1743, Invalid=7569, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 06:13:22,739 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 544 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:22,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [544 Valid, 246 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 06:13:22,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11595 states. [2022-01-18 06:13:22,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11595 to 6779. [2022-01-18 06:13:22,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6779 states, 6778 states have (on average 3.357627618766598) internal successors, (22758), 6778 states have internal predecessors, (22758), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:22,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6779 states to 6779 states and 22758 transitions. [2022-01-18 06:13:22,909 INFO L78 Accepts]: Start accepts. Automaton has 6779 states and 22758 transitions. Word has length 34 [2022-01-18 06:13:22,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:22,910 INFO L470 AbstractCegarLoop]: Abstraction has 6779 states and 22758 transitions. [2022-01-18 06:13:22,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:22,910 INFO L276 IsEmpty]: Start isEmpty. Operand 6779 states and 22758 transitions. [2022-01-18 06:13:22,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:13:22,921 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:22,921 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:22,941 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 06:13:23,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:23,123 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:23,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:23,124 INFO L85 PathProgramCache]: Analyzing trace with hash 188911329, now seen corresponding path program 19 times [2022-01-18 06:13:23,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:23,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2016189462] [2022-01-18 06:13:23,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:23,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:23,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:23,351 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:23,351 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2016189462] [2022-01-18 06:13:23,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2016189462] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:23,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1981264455] [2022-01-18 06:13:23,352 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:13:23,352 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:23,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:23,353 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 06:13:23,354 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 06:13:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:23,373 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:13:23,374 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:24,144 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:24,144 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:26,990 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:26,991 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1981264455] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:26,991 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:26,991 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:13:26,991 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462868924] [2022-01-18 06:13:26,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:26,991 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:13:26,991 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:26,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:13:26,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1800, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:13:26,992 INFO L87 Difference]: Start difference. First operand 6779 states and 22758 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:32,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:32,738 INFO L93 Difference]: Finished difference Result 11575 states and 37220 transitions. [2022-01-18 06:13:32,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-01-18 06:13:32,739 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:13:32,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:32,763 INFO L225 Difference]: With dead ends: 11575 [2022-01-18 06:13:32,763 INFO L226 Difference]: Without dead ends: 11436 [2022-01-18 06:13:32,764 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2814 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=1849, Invalid=7463, Unknown=0, NotChecked=0, Total=9312 [2022-01-18 06:13:32,764 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 767 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 2024 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 435 SdHoareTripleChecker+Invalid, 2346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 2024 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:32,764 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [767 Valid, 435 Invalid, 2346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [322 Valid, 2024 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-01-18 06:13:32,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11436 states. [2022-01-18 06:13:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11436 to 6931. [2022-01-18 06:13:32,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6931 states, 6930 states have (on average 3.3593073593073592) internal successors, (23280), 6930 states have internal predecessors, (23280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6931 states to 6931 states and 23280 transitions. [2022-01-18 06:13:32,952 INFO L78 Accepts]: Start accepts. Automaton has 6931 states and 23280 transitions. Word has length 34 [2022-01-18 06:13:32,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:32,952 INFO L470 AbstractCegarLoop]: Abstraction has 6931 states and 23280 transitions. [2022-01-18 06:13:32,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:32,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6931 states and 23280 transitions. [2022-01-18 06:13:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:13:32,964 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:32,964 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:32,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:33,164 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:33,165 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:33,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:33,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1337834849, now seen corresponding path program 20 times [2022-01-18 06:13:33,165 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:33,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376647907] [2022-01-18 06:13:33,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:33,166 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:33,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:33,399 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:33,400 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:33,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376647907] [2022-01-18 06:13:33,400 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376647907] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:33,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553371084] [2022-01-18 06:13:33,400 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:13:33,400 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:33,400 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:33,401 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 06:13:33,404 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 06:13:33,422 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:13:33,423 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:33,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:13:33,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:34,173 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:34,173 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:36,828 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:36,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553371084] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:36,829 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:36,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 06:13:36,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908402148] [2022-01-18 06:13:36,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:36,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:13:36,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:36,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:13:36,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=362, Invalid=1618, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:13:36,830 INFO L87 Difference]: Start difference. First operand 6931 states and 23280 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:44,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:13:44,423 INFO L93 Difference]: Finished difference Result 13668 states and 44628 transitions. [2022-01-18 06:13:44,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2022-01-18 06:13:44,423 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:13:44,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:13:44,450 INFO L225 Difference]: With dead ends: 13668 [2022-01-18 06:13:44,450 INFO L226 Difference]: Without dead ends: 13441 [2022-01-18 06:13:44,451 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4700 ImplicationChecksByTransitivity, 6.9s TimeCoverageRelationStatistics Valid=2406, Invalid=11636, Unknown=0, NotChecked=0, Total=14042 [2022-01-18 06:13:44,451 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 735 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 2942 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 3273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2942 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:13:44,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 368 Invalid, 3273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2942 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:13:44,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13441 states. [2022-01-18 06:13:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13441 to 6968. [2022-01-18 06:13:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6968 states, 6967 states have (on average 3.3585474379216307) internal successors, (23399), 6967 states have internal predecessors, (23399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:44,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6968 states to 6968 states and 23399 transitions. [2022-01-18 06:13:44,619 INFO L78 Accepts]: Start accepts. Automaton has 6968 states and 23399 transitions. Word has length 34 [2022-01-18 06:13:44,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:13:44,620 INFO L470 AbstractCegarLoop]: Abstraction has 6968 states and 23399 transitions. [2022-01-18 06:13:44,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:13:44,620 INFO L276 IsEmpty]: Start isEmpty. Operand 6968 states and 23399 transitions. [2022-01-18 06:13:44,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:13:44,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:13:44,630 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:13:44,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-01-18 06:13:44,837 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:44,838 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:13:44,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:13:44,838 INFO L85 PathProgramCache]: Analyzing trace with hash -982878999, now seen corresponding path program 21 times [2022-01-18 06:13:44,838 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:13:44,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653233424] [2022-01-18 06:13:44,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:13:44,838 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:13:44,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:13:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:45,101 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:13:45,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653233424] [2022-01-18 06:13:45,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653233424] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:13:45,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303555050] [2022-01-18 06:13:45,101 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:13:45,101 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:13:45,101 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:13:45,102 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 06:13:45,102 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 06:13:45,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:13:45,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:13:45,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 06:13:45,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:13:45,864 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:45,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:13:47,151 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:13:47,152 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303555050] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:13:47,152 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:13:47,152 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 06:13:47,152 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666401660] [2022-01-18 06:13:47,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:13:47,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:13:47,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:13:47,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:13:47,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=344, Invalid=1818, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:13:47,153 INFO L87 Difference]: Start difference. First operand 6968 states and 23399 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:03,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:03,055 INFO L93 Difference]: Finished difference Result 20771 states and 67025 transitions. [2022-01-18 06:14:03,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 197 states. [2022-01-18 06:14:03,056 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:14:03,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:03,101 INFO L225 Difference]: With dead ends: 20771 [2022-01-18 06:14:03,101 INFO L226 Difference]: Without dead ends: 20597 [2022-01-18 06:14:03,103 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 252 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17435 ImplicationChecksByTransitivity, 14.3s TimeCoverageRelationStatistics Valid=8467, Invalid=37543, Unknown=0, NotChecked=0, Total=46010 [2022-01-18 06:14:03,104 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 916 mSDsluCounter, 829 mSDsCounter, 0 mSdLazyCounter, 4447 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 916 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 4979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 4447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:03,104 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [916 Valid, 589 Invalid, 4979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 4447 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 06:14:03,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20597 states. [2022-01-18 06:14:03,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20597 to 8044. [2022-01-18 06:14:03,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8044 states, 8043 states have (on average 3.3851796593310954) internal successors, (27227), 8043 states have internal predecessors, (27227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:03,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8044 states to 8044 states and 27227 transitions. [2022-01-18 06:14:03,372 INFO L78 Accepts]: Start accepts. Automaton has 8044 states and 27227 transitions. Word has length 34 [2022-01-18 06:14:03,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:03,373 INFO L470 AbstractCegarLoop]: Abstraction has 8044 states and 27227 transitions. [2022-01-18 06:14:03,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:03,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8044 states and 27227 transitions. [2022-01-18 06:14:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:14:03,384 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:03,384 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:03,399 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-01-18 06:14:03,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-01-18 06:14:03,595 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1158287809, now seen corresponding path program 22 times [2022-01-18 06:14:03,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:03,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485720390] [2022-01-18 06:14:03,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:03,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:03,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:03,809 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:03,809 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:03,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485720390] [2022-01-18 06:14:03,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485720390] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:03,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892686472] [2022-01-18 06:14:03,809 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:14:03,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:03,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:03,810 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 06:14:03,813 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 06:14:03,832 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:14:03,833 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:03,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:14:03,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:04,559 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:04,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:06,963 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:06,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892686472] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:06,963 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:06,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:14:06,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800908780] [2022-01-18 06:14:06,963 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:06,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:14:06,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:06,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:14:06,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=326, Invalid=1836, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:14:06,964 INFO L87 Difference]: Start difference. First operand 8044 states and 27227 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:16,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:16,001 INFO L93 Difference]: Finished difference Result 17291 states and 55744 transitions. [2022-01-18 06:14:16,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 113 states. [2022-01-18 06:14:16,001 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:14:16,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:16,036 INFO L225 Difference]: With dead ends: 17291 [2022-01-18 06:14:16,036 INFO L226 Difference]: Without dead ends: 17083 [2022-01-18 06:14:16,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5521 ImplicationChecksByTransitivity, 8.5s TimeCoverageRelationStatistics Valid=2857, Invalid=13913, Unknown=0, NotChecked=0, Total=16770 [2022-01-18 06:14:16,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 664 mSDsluCounter, 609 mSDsCounter, 0 mSdLazyCounter, 2694 mSolverCounterSat, 370 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 3064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 2694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:16,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [664 Valid, 422 Invalid, 3064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [370 Valid, 2694 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-01-18 06:14:16,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17083 states. [2022-01-18 06:14:16,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17083 to 8543. [2022-01-18 06:14:16,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8543 states, 8542 states have (on average 3.403418403184266) internal successors, (29072), 8542 states have internal predecessors, (29072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:16,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8543 states to 8543 states and 29072 transitions. [2022-01-18 06:14:16,261 INFO L78 Accepts]: Start accepts. Automaton has 8543 states and 29072 transitions. Word has length 34 [2022-01-18 06:14:16,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:16,262 INFO L470 AbstractCegarLoop]: Abstraction has 8543 states and 29072 transitions. [2022-01-18 06:14:16,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:16,262 INFO L276 IsEmpty]: Start isEmpty. Operand 8543 states and 29072 transitions. [2022-01-18 06:14:16,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:14:16,274 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:16,275 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:16,290 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 06:14:16,475 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-01-18 06:14:16,475 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:16,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:16,475 INFO L85 PathProgramCache]: Analyzing trace with hash 2079989949, now seen corresponding path program 23 times [2022-01-18 06:14:16,476 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:16,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909875675] [2022-01-18 06:14:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:16,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:16,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:16,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:16,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909875675] [2022-01-18 06:14:16,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909875675] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:16,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60230573] [2022-01-18 06:14:16,703 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:14:16,703 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:16,703 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:16,704 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 06:14:16,704 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 06:14:16,730 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:14:16,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:16,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:14:16,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:17,520 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:17,520 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:19,909 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:19,910 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60230573] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:19,910 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:19,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:14:19,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555406905] [2022-01-18 06:14:19,910 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:19,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:14:19,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:19,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:14:19,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:14:19,911 INFO L87 Difference]: Start difference. First operand 8543 states and 29072 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:29,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:29,432 INFO L93 Difference]: Finished difference Result 18582 states and 60299 transitions. [2022-01-18 06:14:29,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2022-01-18 06:14:29,432 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:14:29,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:29,505 INFO L225 Difference]: With dead ends: 18582 [2022-01-18 06:14:29,506 INFO L226 Difference]: Without dead ends: 18404 [2022-01-18 06:14:29,506 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 135 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6402 ImplicationChecksByTransitivity, 8.9s TimeCoverageRelationStatistics Valid=3342, Invalid=15290, Unknown=0, NotChecked=0, Total=18632 [2022-01-18 06:14:29,507 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 689 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 2896 mSolverCounterSat, 396 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 689 SdHoareTripleChecker+Valid, 360 SdHoareTripleChecker+Invalid, 3292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 396 IncrementalHoareTripleChecker+Valid, 2896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:29,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [689 Valid, 360 Invalid, 3292 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [396 Valid, 2896 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 06:14:29,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18404 states. [2022-01-18 06:14:29,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18404 to 8453. [2022-01-18 06:14:29,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8453 states, 8452 states have (on average 3.3917415996213913) internal successors, (28667), 8452 states have internal predecessors, (28667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8453 states to 8453 states and 28667 transitions. [2022-01-18 06:14:29,712 INFO L78 Accepts]: Start accepts. Automaton has 8453 states and 28667 transitions. Word has length 34 [2022-01-18 06:14:29,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:29,712 INFO L470 AbstractCegarLoop]: Abstraction has 8453 states and 28667 transitions. [2022-01-18 06:14:29,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 8453 states and 28667 transitions. [2022-01-18 06:14:29,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:14:29,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:29,724 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:29,739 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-01-18 06:14:29,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-01-18 06:14:29,925 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:29,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:29,926 INFO L85 PathProgramCache]: Analyzing trace with hash 2009879913, now seen corresponding path program 24 times [2022-01-18 06:14:29,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:29,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344495391] [2022-01-18 06:14:29,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:29,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:30,140 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:30,140 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344495391] [2022-01-18 06:14:30,140 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344495391] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:30,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1687565165] [2022-01-18 06:14:30,140 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:14:30,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:30,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:30,142 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 06:14:30,142 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 06:14:30,164 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:14:30,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:30,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:14:30,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:30,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:30,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:33,246 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:33,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1687565165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:33,247 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:33,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 06:14:33,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858667363] [2022-01-18 06:14:33,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:33,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:14:33,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:33,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:14:33,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=324, Invalid=1656, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:14:33,248 INFO L87 Difference]: Start difference. First operand 8453 states and 28667 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:39,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:39,647 INFO L93 Difference]: Finished difference Result 15036 states and 49177 transitions. [2022-01-18 06:14:39,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-01-18 06:14:39,649 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:14:39,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:39,682 INFO L225 Difference]: With dead ends: 15036 [2022-01-18 06:14:39,683 INFO L226 Difference]: Without dead ends: 14858 [2022-01-18 06:14:39,683 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3092 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=1795, Invalid=8305, Unknown=0, NotChecked=0, Total=10100 [2022-01-18 06:14:39,683 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 565 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 2152 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 565 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 2152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:39,684 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [565 Valid, 249 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 2152 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 06:14:39,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14858 states. [2022-01-18 06:14:39,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14858 to 8423. [2022-01-18 06:14:39,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8423 states, 8422 states have (on average 3.392780812158632) internal successors, (28574), 8422 states have internal predecessors, (28574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:39,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8423 states to 8423 states and 28574 transitions. [2022-01-18 06:14:39,872 INFO L78 Accepts]: Start accepts. Automaton has 8423 states and 28574 transitions. Word has length 34 [2022-01-18 06:14:39,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:39,873 INFO L470 AbstractCegarLoop]: Abstraction has 8423 states and 28574 transitions. [2022-01-18 06:14:39,873 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:39,873 INFO L276 IsEmpty]: Start isEmpty. Operand 8423 states and 28574 transitions. [2022-01-18 06:14:39,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:14:39,886 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:39,886 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:39,901 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-01-18 06:14:40,088 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:40,089 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:40,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:40,089 INFO L85 PathProgramCache]: Analyzing trace with hash -1818983591, now seen corresponding path program 25 times [2022-01-18 06:14:40,089 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:40,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590080839] [2022-01-18 06:14:40,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:40,089 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:40,380 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:40,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:40,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590080839] [2022-01-18 06:14:40,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590080839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:40,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029374531] [2022-01-18 06:14:40,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:14:40,381 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:40,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:40,382 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 06:14:40,383 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 06:14:40,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:40,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 06:14:40,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:41,180 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:41,181 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:43,321 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:43,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029374531] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:43,321 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:43,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 49 [2022-01-18 06:14:43,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541427653] [2022-01-18 06:14:43,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:43,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 06:14:43,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:43,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 06:14:43,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=378, Invalid=2072, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:14:43,322 INFO L87 Difference]: Start difference. First operand 8423 states and 28574 transitions. Second operand has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:54,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:14:54,472 INFO L93 Difference]: Finished difference Result 15516 states and 50211 transitions. [2022-01-18 06:14:54,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 147 states. [2022-01-18 06:14:54,473 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:14:54,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:14:54,541 INFO L225 Difference]: With dead ends: 15516 [2022-01-18 06:14:54,541 INFO L226 Difference]: Without dead ends: 15379 [2022-01-18 06:14:54,542 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9536 ImplicationChecksByTransitivity, 10.3s TimeCoverageRelationStatistics Valid=5079, Invalid=22311, Unknown=0, NotChecked=0, Total=27390 [2022-01-18 06:14:54,543 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 751 mSDsluCounter, 773 mSDsCounter, 0 mSdLazyCounter, 3687 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 4106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 3687 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:14:54,544 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [751 Valid, 545 Invalid, 4106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 3687 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:14:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15379 states. [2022-01-18 06:14:54,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15379 to 8748. [2022-01-18 06:14:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8748 states, 8747 states have (on average 3.406082085286384) internal successors, (29793), 8747 states have internal predecessors, (29793), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:54,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8748 states to 8748 states and 29793 transitions. [2022-01-18 06:14:54,767 INFO L78 Accepts]: Start accepts. Automaton has 8748 states and 29793 transitions. Word has length 34 [2022-01-18 06:14:54,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:14:54,767 INFO L470 AbstractCegarLoop]: Abstraction has 8748 states and 29793 transitions. [2022-01-18 06:14:54,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.82) internal successors, (91), 49 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:14:54,767 INFO L276 IsEmpty]: Start isEmpty. Operand 8748 states and 29793 transitions. [2022-01-18 06:14:54,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:14:54,781 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:14:54,781 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:14:54,796 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 06:14:54,995 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,SelfDestructingSolverStorable27 [2022-01-18 06:14:54,995 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:14:54,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:14:54,996 INFO L85 PathProgramCache]: Analyzing trace with hash -472964259, now seen corresponding path program 26 times [2022-01-18 06:14:54,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:14:54,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127779857] [2022-01-18 06:14:54,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:14:54,996 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:14:55,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:14:55,259 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:55,259 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:14:55,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127779857] [2022-01-18 06:14:55,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127779857] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:14:55,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784614092] [2022-01-18 06:14:55,259 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:14:55,259 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:14:55,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:14:55,260 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 06:14:55,261 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 06:14:55,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:14:55,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:14:55,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 20 conjunts are in the unsatisfiable core [2022-01-18 06:14:55,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:14:55,996 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:55,996 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:14:57,970 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:14:57,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784614092] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:14:57,970 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:14:57,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 16, 17] total 46 [2022-01-18 06:14:57,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041398743] [2022-01-18 06:14:57,971 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:14:57,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:14:57,971 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:14:57,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:14:57,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=1805, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:14:57,971 INFO L87 Difference]: Start difference. First operand 8748 states and 29793 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:14,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:14,370 INFO L93 Difference]: Finished difference Result 16682 states and 54028 transitions. [2022-01-18 06:15:14,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 200 states. [2022-01-18 06:15:14,371 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:15:14,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:14,409 INFO L225 Difference]: With dead ends: 16682 [2022-01-18 06:15:14,409 INFO L226 Difference]: Without dead ends: 16535 [2022-01-18 06:15:14,411 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 214 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18050 ImplicationChecksByTransitivity, 14.5s TimeCoverageRelationStatistics Valid=7846, Invalid=38594, Unknown=0, NotChecked=0, Total=46440 [2022-01-18 06:15:14,411 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 921 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 5158 mSolverCounterSat, 531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 921 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 5689 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 531 IncrementalHoareTripleChecker+Valid, 5158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:14,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [921 Valid, 619 Invalid, 5689 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [531 Valid, 5158 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 06:15:14,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16535 states. [2022-01-18 06:15:14,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16535 to 8674. [2022-01-18 06:15:14,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8674 states, 8673 states have (on average 3.401937046004843) internal successors, (29505), 8673 states have internal predecessors, (29505), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8674 states to 8674 states and 29505 transitions. [2022-01-18 06:15:14,647 INFO L78 Accepts]: Start accepts. Automaton has 8674 states and 29505 transitions. Word has length 34 [2022-01-18 06:15:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:14,647 INFO L470 AbstractCegarLoop]: Abstraction has 8674 states and 29505 transitions. [2022-01-18 06:15:14,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 8674 states and 29505 transitions. [2022-01-18 06:15:14,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:15:14,661 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:14,661 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:14,678 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 06:15:14,861 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,SelfDestructingSolverStorable28 [2022-01-18 06:15:14,861 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:15:14,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:14,862 INFO L85 PathProgramCache]: Analyzing trace with hash 445215345, now seen corresponding path program 27 times [2022-01-18 06:15:14,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:14,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579726870] [2022-01-18 06:15:14,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:14,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:14,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:15,119 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:15,120 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:15,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579726870] [2022-01-18 06:15:15,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579726870] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:15,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1927014605] [2022-01-18 06:15:15,120 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:15:15,120 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:15,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:15,121 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 06:15:15,121 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 06:15:15,147 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:15:15,147 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:15,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:15:15,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:15,875 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:15,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:18,584 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:18,585 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1927014605] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:18,585 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:18,585 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 06:15:18,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239469079] [2022-01-18 06:15:18,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:18,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:15:18,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:18,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:15:18,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=329, Invalid=1651, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:15:18,586 INFO L87 Difference]: Start difference. First operand 8674 states and 29505 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:30,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:30,731 INFO L93 Difference]: Finished difference Result 27617 states and 90885 transitions. [2022-01-18 06:15:30,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 141 states. [2022-01-18 06:15:30,732 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:15:30,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:30,794 INFO L225 Difference]: With dead ends: 27617 [2022-01-18 06:15:30,794 INFO L226 Difference]: Without dead ends: 27408 [2022-01-18 06:15:30,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8172 ImplicationChecksByTransitivity, 10.7s TimeCoverageRelationStatistics Valid=4436, Invalid=19744, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 06:15:30,795 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 700 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 4378 mSolverCounterSat, 418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 4796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 418 IncrementalHoareTripleChecker+Valid, 4378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:30,795 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [700 Valid, 582 Invalid, 4796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [418 Valid, 4378 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 06:15:30,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27408 states. [2022-01-18 06:15:31,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27408 to 12080. [2022-01-18 06:15:31,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12080 states, 12079 states have (on average 3.4684990479344315) internal successors, (41896), 12079 states have internal predecessors, (41896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:31,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12080 states to 12080 states and 41896 transitions. [2022-01-18 06:15:31,167 INFO L78 Accepts]: Start accepts. Automaton has 12080 states and 41896 transitions. Word has length 34 [2022-01-18 06:15:31,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:31,167 INFO L470 AbstractCegarLoop]: Abstraction has 12080 states and 41896 transitions. [2022-01-18 06:15:31,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:31,167 INFO L276 IsEmpty]: Start isEmpty. Operand 12080 states and 41896 transitions. [2022-01-18 06:15:31,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:15:31,185 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:31,185 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:31,200 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-01-18 06:15:31,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:31,386 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:15:31,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:31,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1498004759, now seen corresponding path program 28 times [2022-01-18 06:15:31,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:31,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709769846] [2022-01-18 06:15:31,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:31,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:31,659 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:31,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:31,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709769846] [2022-01-18 06:15:31,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709769846] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:31,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68568042] [2022-01-18 06:15:31,660 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:15:31,660 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:31,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:31,661 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 06:15:31,661 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 06:15:31,683 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:15:31,684 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:31,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:15:31,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:32,467 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:32,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:35,069 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:35,069 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68568042] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:35,069 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:35,069 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:15:35,069 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412479949] [2022-01-18 06:15:35,069 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:35,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:15:35,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:15:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=365, Invalid=1797, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:15:35,070 INFO L87 Difference]: Start difference. First operand 12080 states and 41896 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:42,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:15:42,223 INFO L93 Difference]: Finished difference Result 26957 states and 90433 transitions. [2022-01-18 06:15:42,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-01-18 06:15:42,223 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:15:42,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:15:42,288 INFO L225 Difference]: With dead ends: 26957 [2022-01-18 06:15:42,288 INFO L226 Difference]: Without dead ends: 26819 [2022-01-18 06:15:42,289 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 120 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4911 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=3170, Invalid=11592, Unknown=0, NotChecked=0, Total=14762 [2022-01-18 06:15:42,289 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 824 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 2862 mSolverCounterSat, 438 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 824 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 3300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 438 IncrementalHoareTripleChecker+Valid, 2862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:15:42,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [824 Valid, 340 Invalid, 3300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [438 Valid, 2862 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-01-18 06:15:42,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26819 states. [2022-01-18 06:15:42,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26819 to 14045. [2022-01-18 06:15:42,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14045 states, 14044 states have (on average 3.498433494730846) internal successors, (49132), 14044 states have internal predecessors, (49132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:42,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14045 states to 14045 states and 49132 transitions. [2022-01-18 06:15:42,740 INFO L78 Accepts]: Start accepts. Automaton has 14045 states and 49132 transitions. Word has length 34 [2022-01-18 06:15:42,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:15:42,740 INFO L470 AbstractCegarLoop]: Abstraction has 14045 states and 49132 transitions. [2022-01-18 06:15:42,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:15:42,740 INFO L276 IsEmpty]: Start isEmpty. Operand 14045 states and 49132 transitions. [2022-01-18 06:15:42,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:15:42,762 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:15:42,762 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:15:42,778 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-01-18 06:15:42,963 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:42,963 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:15:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:15:42,964 INFO L85 PathProgramCache]: Analyzing trace with hash -870461771, now seen corresponding path program 29 times [2022-01-18 06:15:42,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:15:42,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212152873] [2022-01-18 06:15:42,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:15:42,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:15:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:15:43,189 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:43,190 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:15:43,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212152873] [2022-01-18 06:15:43,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212152873] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:15:43,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811151734] [2022-01-18 06:15:43,190 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:15:43,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:15:43,190 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:15:43,191 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 06:15:43,191 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 06:15:43,211 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:15:43,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:15:43,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 06:15:43,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:15:43,943 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:43,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:15:47,249 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:15:47,249 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811151734] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:15:47,249 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:15:47,249 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:15:47,249 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605409201] [2022-01-18 06:15:47,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:15:47,249 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:15:47,250 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:15:47,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:15:47,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=336, Invalid=1826, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:15:47,250 INFO L87 Difference]: Start difference. First operand 14045 states and 49132 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:03,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:03,943 INFO L93 Difference]: Finished difference Result 27731 states and 91215 transitions. [2022-01-18 06:16:03,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 06:16:03,944 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:16:03,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:04,012 INFO L225 Difference]: With dead ends: 27731 [2022-01-18 06:16:04,012 INFO L226 Difference]: Without dead ends: 27518 [2022-01-18 06:16:04,013 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10790 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=5374, Invalid=24382, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 06:16:04,013 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 792 mSDsluCounter, 961 mSDsCounter, 0 mSdLazyCounter, 3553 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 792 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 3943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 3553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:04,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [792 Valid, 686 Invalid, 3943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 3553 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-01-18 06:16:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27518 states. [2022-01-18 06:16:04,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27518 to 15571. [2022-01-18 06:16:04,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15571 states, 15570 states have (on average 3.5063583815028903) internal successors, (54594), 15570 states have internal predecessors, (54594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15571 states to 15571 states and 54594 transitions. [2022-01-18 06:16:04,470 INFO L78 Accepts]: Start accepts. Automaton has 15571 states and 54594 transitions. Word has length 34 [2022-01-18 06:16:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:04,470 INFO L470 AbstractCegarLoop]: Abstraction has 15571 states and 54594 transitions. [2022-01-18 06:16:04,470 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 15571 states and 54594 transitions. [2022-01-18 06:16:04,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:16:04,494 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:04,494 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:04,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2022-01-18 06:16:04,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:04,703 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:04,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:04,703 INFO L85 PathProgramCache]: Analyzing trace with hash 278461749, now seen corresponding path program 30 times [2022-01-18 06:16:04,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:04,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43518927] [2022-01-18 06:16:04,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:04,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:04,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:04,978 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:04,978 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43518927] [2022-01-18 06:16:04,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43518927] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:04,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487955046] [2022-01-18 06:16:04,978 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:16:04,978 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:04,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:04,979 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 06:16:04,980 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 06:16:05,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-01-18 06:16:05,003 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:16:05,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:16:05,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:05,733 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:05,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:08,482 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:08,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1487955046] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:08,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:08,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 06:16:08,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961810582] [2022-01-18 06:16:08,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:08,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:16:08,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:08,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:16:08,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=331, Invalid=1649, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:16:08,483 INFO L87 Difference]: Start difference. First operand 15571 states and 54594 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:20,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:20,327 INFO L93 Difference]: Finished difference Result 28288 states and 95943 transitions. [2022-01-18 06:16:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 139 states. [2022-01-18 06:16:20,327 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:16:20,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:20,394 INFO L225 Difference]: With dead ends: 28288 [2022-01-18 06:16:20,395 INFO L226 Difference]: Without dead ends: 28097 [2022-01-18 06:16:20,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8540 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=4162, Invalid=20018, Unknown=0, NotChecked=0, Total=24180 [2022-01-18 06:16:20,396 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 722 mSDsluCounter, 581 mSDsCounter, 0 mSdLazyCounter, 4245 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 4611 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 4245 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:20,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 413 Invalid, 4611 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 4245 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 06:16:20,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28097 states. [2022-01-18 06:16:20,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28097 to 15481. [2022-01-18 06:16:20,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15481 states, 15480 states have (on average 3.5050387596899224) internal successors, (54258), 15480 states have internal predecessors, (54258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:20,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15481 states to 15481 states and 54258 transitions. [2022-01-18 06:16:20,816 INFO L78 Accepts]: Start accepts. Automaton has 15481 states and 54258 transitions. Word has length 34 [2022-01-18 06:16:20,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:20,816 INFO L470 AbstractCegarLoop]: Abstraction has 15481 states and 54258 transitions. [2022-01-18 06:16:20,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:20,816 INFO L276 IsEmpty]: Start isEmpty. Operand 15481 states and 54258 transitions. [2022-01-18 06:16:20,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:16:20,840 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:20,840 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:20,856 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:21,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:21,041 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:21,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:21,041 INFO L85 PathProgramCache]: Analyzing trace with hash 726875713, now seen corresponding path program 31 times [2022-01-18 06:16:21,041 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:21,041 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713967205] [2022-01-18 06:16:21,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:21,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:21,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:21,273 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:21,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713967205] [2022-01-18 06:16:21,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713967205] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:21,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1890322121] [2022-01-18 06:16:21,274 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:16:21,274 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:21,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:21,275 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 06:16:21,275 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 06:16:21,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:21,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:16:21,307 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:22,102 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:22,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:24,687 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:24,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1890322121] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:24,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:24,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 46 [2022-01-18 06:16:24,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822099212] [2022-01-18 06:16:24,687 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:24,687 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-01-18 06:16:24,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:24,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-01-18 06:16:24,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1817, Unknown=0, NotChecked=0, Total=2162 [2022-01-18 06:16:24,688 INFO L87 Difference]: Start difference. First operand 15481 states and 54258 transitions. Second operand has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:32,798 INFO L93 Difference]: Finished difference Result 29297 states and 98478 transitions. [2022-01-18 06:16:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-01-18 06:16:32,798 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:16:32,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:32,877 INFO L225 Difference]: With dead ends: 29297 [2022-01-18 06:16:32,877 INFO L226 Difference]: Without dead ends: 29071 [2022-01-18 06:16:32,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 36 SyntacticMatches, 2 SemanticMatches, 137 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6575 ImplicationChecksByTransitivity, 7.3s TimeCoverageRelationStatistics Valid=3924, Invalid=15258, Unknown=0, NotChecked=0, Total=19182 [2022-01-18 06:16:32,879 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 594 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 3363 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 594 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 3712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 3363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:32,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [594 Valid, 430 Invalid, 3712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 3363 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:16:32,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29071 states. [2022-01-18 06:16:33,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29071 to 17955. [2022-01-18 06:16:33,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17955 states, 17954 states have (on average 3.5179904199621252) internal successors, (63162), 17954 states have internal predecessors, (63162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:33,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17955 states to 17955 states and 63162 transitions. [2022-01-18 06:16:33,398 INFO L78 Accepts]: Start accepts. Automaton has 17955 states and 63162 transitions. Word has length 34 [2022-01-18 06:16:33,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:33,398 INFO L470 AbstractCegarLoop]: Abstraction has 17955 states and 63162 transitions. [2022-01-18 06:16:33,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 47 states have (on average 1.9361702127659575) internal successors, (91), 46 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:33,398 INFO L276 IsEmpty]: Start isEmpty. Operand 17955 states and 63162 transitions. [2022-01-18 06:16:33,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-01-18 06:16:33,431 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:33,431 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:33,447 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-01-18 06:16:33,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2022-01-18 06:16:33,643 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash 1648577853, now seen corresponding path program 32 times [2022-01-18 06:16:33,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:33,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301523437] [2022-01-18 06:16:33,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:33,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:33,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:33,862 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:33,863 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:33,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301523437] [2022-01-18 06:16:33,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301523437] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:33,863 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093548221] [2022-01-18 06:16:33,863 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:16:33,863 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:33,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:33,864 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 06:16:33,864 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 06:16:33,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:16:33,886 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:16:33,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 19 conjunts are in the unsatisfiable core [2022-01-18 06:16:33,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:34,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:37,282 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:37,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093548221] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:37,282 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:37,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2022-01-18 06:16:37,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268189130] [2022-01-18 06:16:37,282 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:37,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-01-18 06:16:37,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:37,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-01-18 06:16:37,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=335, Invalid=1645, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 06:16:37,283 INFO L87 Difference]: Start difference. First operand 17955 states and 63162 transitions. Second operand has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:43,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:16:43,957 INFO L93 Difference]: Finished difference Result 29870 states and 101083 transitions. [2022-01-18 06:16:43,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 108 states. [2022-01-18 06:16:43,957 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-01-18 06:16:43,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:16:44,036 INFO L225 Difference]: With dead ends: 29870 [2022-01-18 06:16:44,036 INFO L226 Difference]: Without dead ends: 29732 [2022-01-18 06:16:44,037 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5259 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=3295, Invalid=12961, Unknown=0, NotChecked=0, Total=16256 [2022-01-18 06:16:44,037 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 455 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 3406 mSolverCounterSat, 282 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 455 SdHoareTripleChecker+Valid, 333 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 282 IncrementalHoareTripleChecker+Valid, 3406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:16:44,037 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [455 Valid, 333 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [282 Valid, 3406 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-01-18 06:16:44,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29732 states. [2022-01-18 06:16:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29732 to 18408. [2022-01-18 06:16:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18408 states, 18407 states have (on average 3.5227359156842506) internal successors, (64843), 18407 states have internal predecessors, (64843), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18408 states to 18408 states and 64843 transitions. [2022-01-18 06:16:44,606 INFO L78 Accepts]: Start accepts. Automaton has 18408 states and 64843 transitions. Word has length 34 [2022-01-18 06:16:44,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:16:44,607 INFO L470 AbstractCegarLoop]: Abstraction has 18408 states and 64843 transitions. [2022-01-18 06:16:44,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 45 states have (on average 2.022222222222222) internal successors, (91), 44 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:16:44,607 INFO L276 IsEmpty]: Start isEmpty. Operand 18408 states and 64843 transitions. [2022-01-18 06:16:44,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:16:44,636 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:16:44,636 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:16:44,652 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 06:16:44,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:44,836 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:16:44,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:16:44,837 INFO L85 PathProgramCache]: Analyzing trace with hash -1690581361, now seen corresponding path program 33 times [2022-01-18 06:16:44,837 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:16:44,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335623305] [2022-01-18 06:16:44,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:16:44,837 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:16:44,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:16:45,134 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:16:45,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:16:45,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335623305] [2022-01-18 06:16:45,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335623305] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:16:45,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697527065] [2022-01-18 06:16:45,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:16:45,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:16:45,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:16:45,135 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 06:16:45,136 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 06:16:45,158 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2022-01-18 06:16:45,158 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:16:45,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 22 conjunts are in the unsatisfiable core [2022-01-18 06:16:45,159 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:16:46,173 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:46,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:16:48,192 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:16:48,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697527065] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:16:48,192 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:16:48,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-01-18 06:16:48,192 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084534395] [2022-01-18 06:16:48,192 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:16:48,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 06:16:48,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:16:48,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 06:16:48,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=412, Invalid=2038, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:16:48,193 INFO L87 Difference]: Start difference. First operand 18408 states and 64843 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:04,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:17:04,860 INFO L93 Difference]: Finished difference Result 39425 states and 133315 transitions. [2022-01-18 06:17:04,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 177 states. [2022-01-18 06:17:04,860 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:17:04,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:04,969 INFO L225 Difference]: With dead ends: 39425 [2022-01-18 06:17:04,969 INFO L226 Difference]: Without dead ends: 39171 [2022-01-18 06:17:04,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 232 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 190 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13482 ImplicationChecksByTransitivity, 15.0s TimeCoverageRelationStatistics Valid=5776, Invalid=30896, Unknown=0, NotChecked=0, Total=36672 [2022-01-18 06:17:04,971 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 928 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 4462 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 928 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 4989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 4462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:04,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [928 Valid, 596 Invalid, 4989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [527 Valid, 4462 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 06:17:05,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39171 states. [2022-01-18 06:17:05,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39171 to 20370. [2022-01-18 06:17:05,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20370 states, 20369 states have (on average 3.524424370366734) internal successors, (71789), 20369 states have internal predecessors, (71789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:05,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20370 states to 20370 states and 71789 transitions. [2022-01-18 06:17:05,687 INFO L78 Accepts]: Start accepts. Automaton has 20370 states and 71789 transitions. Word has length 36 [2022-01-18 06:17:05,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:05,687 INFO L470 AbstractCegarLoop]: Abstraction has 20370 states and 71789 transitions. [2022-01-18 06:17:05,688 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:05,688 INFO L276 IsEmpty]: Start isEmpty. Operand 20370 states and 71789 transitions. [2022-01-18 06:17:05,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:17:05,724 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:05,724 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:05,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-01-18 06:17:05,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:05,925 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:05,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:05,925 INFO L85 PathProgramCache]: Analyzing trace with hash 705856911, now seen corresponding path program 34 times [2022-01-18 06:17:05,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:05,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091508025] [2022-01-18 06:17:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:05,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:06,238 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:17:06,238 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:06,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091508025] [2022-01-18 06:17:06,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091508025] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:06,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [674998107] [2022-01-18 06:17:06,238 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:17:06,238 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:06,238 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:06,239 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 06:17:06,240 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 06:17:06,265 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:17:06,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:17:06,266 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 06:17:06,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:07,353 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:07,354 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:17:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:11,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [674998107] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:17:11,119 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:17:11,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 19] total 51 [2022-01-18 06:17:11,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963143363] [2022-01-18 06:17:11,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:17:11,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:17:11,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:17:11,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:17:11,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=449, Invalid=2203, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:17:11,120 INFO L87 Difference]: Start difference. First operand 20370 states and 71789 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:33,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:17:33,798 INFO L93 Difference]: Finished difference Result 37640 states and 127007 transitions. [2022-01-18 06:17:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-01-18 06:17:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:17:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:17:33,891 INFO L225 Difference]: With dead ends: 37640 [2022-01-18 06:17:33,892 INFO L226 Difference]: Without dead ends: 37431 [2022-01-18 06:17:33,893 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 171 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10801 ImplicationChecksByTransitivity, 22.1s TimeCoverageRelationStatistics Valid=5044, Invalid=24712, Unknown=0, NotChecked=0, Total=29756 [2022-01-18 06:17:33,893 INFO L933 BasicCegarLoop]: 33 mSDtfsCounter, 749 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 3312 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 810 SdHoareTripleChecker+Invalid, 3679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 3312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:17:33,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [749 Valid, 810 Invalid, 3679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 3312 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 06:17:33,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37431 states. [2022-01-18 06:17:34,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37431 to 22320. [2022-01-18 06:17:34,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22320 states, 22319 states have (on average 3.5096554505130158) internal successors, (78332), 22319 states have internal predecessors, (78332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:34,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22320 states to 22320 states and 78332 transitions. [2022-01-18 06:17:34,473 INFO L78 Accepts]: Start accepts. Automaton has 22320 states and 78332 transitions. Word has length 36 [2022-01-18 06:17:34,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:17:34,474 INFO L470 AbstractCegarLoop]: Abstraction has 22320 states and 78332 transitions. [2022-01-18 06:17:34,474 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:17:34,474 INFO L276 IsEmpty]: Start isEmpty. Operand 22320 states and 78332 transitions. [2022-01-18 06:17:34,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:17:34,511 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:17:34,512 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:17:34,529 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 06:17:34,712 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,SelfDestructingSolverStorable36 [2022-01-18 06:17:34,712 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:17:34,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:17:34,712 INFO L85 PathProgramCache]: Analyzing trace with hash -132070257, now seen corresponding path program 35 times [2022-01-18 06:17:34,712 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:17:34,713 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172980302] [2022-01-18 06:17:34,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:17:34,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:17:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:17:35,086 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 06:17:35,087 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:17:35,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172980302] [2022-01-18 06:17:35,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172980302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:17:35,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513244229] [2022-01-18 06:17:35,087 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:17:35,087 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:17:35,087 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:17:35,088 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 06:17:35,088 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 06:17:35,112 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:17:35,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:17:35,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:17:35,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:17:35,974 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:35,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:17:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:17:38,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513244229] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:17:38,602 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:17:38,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-01-18 06:17:38,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955610224] [2022-01-18 06:17:38,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:17:38,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 06:17:38,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:17:38,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 06:17:38,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=459, Invalid=2297, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:17:38,603 INFO L87 Difference]: Start difference. First operand 22320 states and 78332 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:14,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:18:14,145 INFO L93 Difference]: Finished difference Result 36818 states and 123722 transitions. [2022-01-18 06:18:14,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2022-01-18 06:18:14,145 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:18:14,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:18:14,234 INFO L225 Difference]: With dead ends: 36818 [2022-01-18 06:18:14,234 INFO L226 Difference]: Without dead ends: 36383 [2022-01-18 06:18:14,236 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 251 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 211 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16703 ImplicationChecksByTransitivity, 34.7s TimeCoverageRelationStatistics Valid=7341, Invalid=37815, Unknown=0, NotChecked=0, Total=45156 [2022-01-18 06:18:14,237 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 1076 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1076 SdHoareTripleChecker+Valid, 1033 SdHoareTripleChecker+Invalid, 3984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:18:14,237 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1076 Valid, 1033 Invalid, 3984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 06:18:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36383 states. [2022-01-18 06:18:14,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36383 to 22991. [2022-01-18 06:18:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22991 states, 22990 states have (on average 3.5024358416702914) internal successors, (80521), 22990 states have internal predecessors, (80521), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22991 states to 22991 states and 80521 transitions. [2022-01-18 06:18:14,816 INFO L78 Accepts]: Start accepts. Automaton has 22991 states and 80521 transitions. Word has length 36 [2022-01-18 06:18:14,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:18:14,817 INFO L470 AbstractCegarLoop]: Abstraction has 22991 states and 80521 transitions. [2022-01-18 06:18:14,817 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:14,817 INFO L276 IsEmpty]: Start isEmpty. Operand 22991 states and 80521 transitions. [2022-01-18 06:18:14,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:18:14,852 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:18:14,853 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:18:14,870 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 06:18:15,053 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,SelfDestructingSolverStorable37 [2022-01-18 06:18:15,053 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:18:15,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:18:15,054 INFO L85 PathProgramCache]: Analyzing trace with hash 165942351, now seen corresponding path program 36 times [2022-01-18 06:18:15,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:18:15,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439864621] [2022-01-18 06:18:15,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:18:15,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:18:15,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:15,313 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:15,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:18:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439864621] [2022-01-18 06:18:15,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439864621] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:18:15,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718899326] [2022-01-18 06:18:15,313 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:18:15,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:15,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:18:15,314 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 06:18:15,315 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 06:18:15,339 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 06:18:15,340 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:18:15,340 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 06:18:15,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:18:16,249 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:16,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:18,841 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:18,842 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718899326] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:18,842 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:18,842 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 18] total 48 [2022-01-18 06:18:18,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120056878] [2022-01-18 06:18:18,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:18,842 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-01-18 06:18:18,842 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:18,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-01-18 06:18:18,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=374, Invalid=1978, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 06:18:18,842 INFO L87 Difference]: Start difference. First operand 22991 states and 80521 transitions. Second operand has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:36,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:18:36,312 INFO L93 Difference]: Finished difference Result 37235 states and 125952 transitions. [2022-01-18 06:18:36,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 156 states. [2022-01-18 06:18:36,312 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:18:36,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:18:36,401 INFO L225 Difference]: With dead ends: 37235 [2022-01-18 06:18:36,401 INFO L226 Difference]: Without dead ends: 36955 [2022-01-18 06:18:36,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 212 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10045 ImplicationChecksByTransitivity, 16.0s TimeCoverageRelationStatistics Valid=4219, Invalid=24851, Unknown=0, NotChecked=0, Total=29070 [2022-01-18 06:18:36,403 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 857 mSDsluCounter, 759 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 857 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:18:36,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [857 Valid, 579 Invalid, 5103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-01-18 06:18:36,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36955 states. [2022-01-18 06:18:36,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36955 to 23455. [2022-01-18 06:18:36,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23455 states, 23454 states have (on average 3.4936471390807537) internal successors, (81940), 23454 states have internal predecessors, (81940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:37,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23455 states to 23455 states and 81940 transitions. [2022-01-18 06:18:37,026 INFO L78 Accepts]: Start accepts. Automaton has 23455 states and 81940 transitions. Word has length 36 [2022-01-18 06:18:37,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:18:37,026 INFO L470 AbstractCegarLoop]: Abstraction has 23455 states and 81940 transitions. [2022-01-18 06:18:37,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.9795918367346939) internal successors, (97), 48 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:18:37,026 INFO L276 IsEmpty]: Start isEmpty. Operand 23455 states and 81940 transitions. [2022-01-18 06:18:37,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:18:37,062 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:18:37,062 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:18:37,078 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-01-18 06:18:37,263 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,SelfDestructingSolverStorable38 [2022-01-18 06:18:37,263 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:18:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:18:37,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1442269323, now seen corresponding path program 37 times [2022-01-18 06:18:37,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:18:37,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674652622] [2022-01-18 06:18:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:18:37,264 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:18:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:37,513 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:18:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674652622] [2022-01-18 06:18:37,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674652622] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:18:37,513 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595714276] [2022-01-18 06:18:37,513 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:18:37,513 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:18:37,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:18:37,514 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 06:18:37,515 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 06:18:37,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:18:37,537 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:18:37,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:18:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:38,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:18:40,668 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:18:40,668 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595714276] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:18:40,668 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:18:40,668 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2022-01-18 06:18:40,668 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378953748] [2022-01-18 06:18:40,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:18:40,668 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 06:18:40,668 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:18:40,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 06:18:40,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=429, Invalid=2327, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:18:40,669 INFO L87 Difference]: Start difference. First operand 23455 states and 81940 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:14,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:14,137 INFO L93 Difference]: Finished difference Result 39539 states and 132003 transitions. [2022-01-18 06:19:14,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-01-18 06:19:14,137 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:19:14,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:14,230 INFO L225 Difference]: With dead ends: 39539 [2022-01-18 06:19:14,231 INFO L226 Difference]: Without dead ends: 39108 [2022-01-18 06:19:14,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 36 SyntacticMatches, 4 SemanticMatches, 232 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21216 ImplicationChecksByTransitivity, 32.3s TimeCoverageRelationStatistics Valid=8717, Invalid=45805, Unknown=0, NotChecked=0, Total=54522 [2022-01-18 06:19:14,233 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 1081 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3971 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 4418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 3971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:14,233 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1081 Valid, 1164 Invalid, 4418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 3971 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-01-18 06:19:14,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39108 states. [2022-01-18 06:19:14,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39108 to 23865. [2022-01-18 06:19:14,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23865 states, 23864 states have (on average 3.4881830372108618) internal successors, (83242), 23864 states have internal predecessors, (83242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:14,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23865 states to 23865 states and 83242 transitions. [2022-01-18 06:19:14,805 INFO L78 Accepts]: Start accepts. Automaton has 23865 states and 83242 transitions. Word has length 36 [2022-01-18 06:19:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:14,805 INFO L470 AbstractCegarLoop]: Abstraction has 23865 states and 83242 transitions. [2022-01-18 06:19:14,805 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:14,805 INFO L276 IsEmpty]: Start isEmpty. Operand 23865 states and 83242 transitions. [2022-01-18 06:19:14,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:19:14,844 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:14,844 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:14,859 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2022-01-18 06:19:15,044 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,SelfDestructingSolverStorable39 [2022-01-18 06:19:15,044 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:15,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:15,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1340971121, now seen corresponding path program 38 times [2022-01-18 06:19:15,045 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:15,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739199304] [2022-01-18 06:19:15,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:15,045 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:15,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:15,374 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:15,374 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739199304] [2022-01-18 06:19:15,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739199304] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:15,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475185298] [2022-01-18 06:19:15,374 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:19:15,374 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:15,375 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:15,375 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 06:19:15,376 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 06:19:15,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:19:15,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:15,399 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:19:15,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:16,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:17,892 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:17,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475185298] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:17,892 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:17,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17, 19] total 51 [2022-01-18 06:19:17,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555801611] [2022-01-18 06:19:17,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:17,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:19:17,893 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:17,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:19:17,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=461, Invalid=2191, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:19:17,893 INFO L87 Difference]: Start difference. First operand 23865 states and 83242 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:37,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:37,080 INFO L93 Difference]: Finished difference Result 46254 states and 153652 transitions. [2022-01-18 06:19:37,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 257 states. [2022-01-18 06:19:37,081 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:19:37,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:37,196 INFO L225 Difference]: With dead ends: 46254 [2022-01-18 06:19:37,196 INFO L226 Difference]: Without dead ends: 45963 [2022-01-18 06:19:37,199 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 312 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 271 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30452 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=11343, Invalid=62913, Unknown=0, NotChecked=0, Total=74256 [2022-01-18 06:19:37,199 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 1310 mSDsluCounter, 1032 mSDsCounter, 0 mSdLazyCounter, 5050 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1310 SdHoareTripleChecker+Valid, 792 SdHoareTripleChecker+Invalid, 5766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 5050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:37,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1310 Valid, 792 Invalid, 5766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 5050 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 06:19:37,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45963 states. [2022-01-18 06:19:37,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45963 to 24356. [2022-01-18 06:19:37,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24356 states, 24355 states have (on average 3.4868815438308354) internal successors, (84923), 24355 states have internal predecessors, (84923), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:38,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24356 states to 24356 states and 84923 transitions. [2022-01-18 06:19:38,087 INFO L78 Accepts]: Start accepts. Automaton has 24356 states and 84923 transitions. Word has length 36 [2022-01-18 06:19:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:38,087 INFO L470 AbstractCegarLoop]: Abstraction has 24356 states and 84923 transitions. [2022-01-18 06:19:38,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 24356 states and 84923 transitions. [2022-01-18 06:19:38,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:19:38,129 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:38,129 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:38,144 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 06:19:38,329 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:38,329 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:38,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:38,330 INFO L85 PathProgramCache]: Analyzing trace with hash -883763825, now seen corresponding path program 39 times [2022-01-18 06:19:38,330 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:38,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1374791471] [2022-01-18 06:19:38,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:38,330 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:38,615 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:38,615 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:38,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1374791471] [2022-01-18 06:19:38,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1374791471] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:38,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270522109] [2022-01-18 06:19:38,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:19:38,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:38,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:38,616 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 06:19:38,619 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 06:19:38,640 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:19:38,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:38,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:19:38,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:39,490 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:39,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:40,366 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:40,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270522109] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:40,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:40,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 06:19:40,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72302092] [2022-01-18 06:19:40,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:40,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:19:40,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:40,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:19:40,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=424, Invalid=2228, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:19:40,367 INFO L87 Difference]: Start difference. First operand 24356 states and 84923 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:56,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:19:56,003 INFO L93 Difference]: Finished difference Result 47727 states and 157820 transitions. [2022-01-18 06:19:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 223 states. [2022-01-18 06:19:56,004 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:19:56,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:19:56,121 INFO L225 Difference]: With dead ends: 47727 [2022-01-18 06:19:56,121 INFO L226 Difference]: Without dead ends: 47130 [2022-01-18 06:19:56,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 240 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22222 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=8220, Invalid=50102, Unknown=0, NotChecked=0, Total=58322 [2022-01-18 06:19:56,125 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 1475 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 645 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1475 SdHoareTripleChecker+Valid, 893 SdHoareTripleChecker+Invalid, 7641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 645 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-01-18 06:19:56,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1475 Valid, 893 Invalid, 7641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [645 Valid, 6996 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-01-18 06:19:56,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47130 states. [2022-01-18 06:19:56,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47130 to 24572. [2022-01-18 06:19:56,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24572 states, 24571 states have (on average 3.482560742338529) internal successors, (85570), 24571 states have internal predecessors, (85570), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:56,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24572 states to 24572 states and 85570 transitions. [2022-01-18 06:19:56,880 INFO L78 Accepts]: Start accepts. Automaton has 24572 states and 85570 transitions. Word has length 36 [2022-01-18 06:19:56,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:19:56,880 INFO L470 AbstractCegarLoop]: Abstraction has 24572 states and 85570 transitions. [2022-01-18 06:19:56,880 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:19:56,880 INFO L276 IsEmpty]: Start isEmpty. Operand 24572 states and 85570 transitions. [2022-01-18 06:19:56,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:19:56,917 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:19:56,917 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:19:56,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Forceful destruction successful, exit code 0 [2022-01-18 06:19:57,117 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,SelfDestructingSolverStorable41 [2022-01-18 06:19:57,118 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:19:57,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:19:57,118 INFO L85 PathProgramCache]: Analyzing trace with hash 231013519, now seen corresponding path program 40 times [2022-01-18 06:19:57,119 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:19:57,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031467633] [2022-01-18 06:19:57,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:19:57,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:19:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:19:57,403 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:57,404 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:19:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031467633] [2022-01-18 06:19:57,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031467633] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:19:57,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1207905165] [2022-01-18 06:19:57,404 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:19:57,404 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:19:57,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:19:57,405 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 06:19:57,405 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 06:19:57,428 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:19:57,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:19:57,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:19:57,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:19:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:58,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:19:59,482 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:19:59,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1207905165] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:19:59,482 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:19:59,482 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-01-18 06:19:59,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866223090] [2022-01-18 06:19:59,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:19:59,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 06:19:59,483 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:19:59,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 06:19:59,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=457, Invalid=2513, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 06:19:59,483 INFO L87 Difference]: Start difference. First operand 24572 states and 85570 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:20,612 INFO L93 Difference]: Finished difference Result 51559 states and 166281 transitions. [2022-01-18 06:20:20,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 275 states. [2022-01-18 06:20:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:20:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:20,742 INFO L225 Difference]: With dead ends: 51559 [2022-01-18 06:20:20,742 INFO L226 Difference]: Without dead ends: 50974 [2022-01-18 06:20:20,745 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 293 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36935 ImplicationChecksByTransitivity, 19.4s TimeCoverageRelationStatistics Valid=13139, Invalid=73591, Unknown=0, NotChecked=0, Total=86730 [2022-01-18 06:20:20,745 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 1672 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 4645 mSolverCounterSat, 853 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1087 SdHoareTripleChecker+Invalid, 5498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 853 IncrementalHoareTripleChecker+Valid, 4645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:20,746 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1672 Valid, 1087 Invalid, 5498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [853 Valid, 4645 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-01-18 06:20:20,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50974 states. [2022-01-18 06:20:21,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50974 to 25902. [2022-01-18 06:20:21,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25902 states, 25901 states have (on average 3.4722983668584226) internal successors, (89936), 25901 states have internal predecessors, (89936), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:21,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25902 states to 25902 states and 89936 transitions. [2022-01-18 06:20:21,538 INFO L78 Accepts]: Start accepts. Automaton has 25902 states and 89936 transitions. Word has length 36 [2022-01-18 06:20:21,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:21,538 INFO L470 AbstractCegarLoop]: Abstraction has 25902 states and 89936 transitions. [2022-01-18 06:20:21,538 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:21,538 INFO L276 IsEmpty]: Start isEmpty. Operand 25902 states and 89936 transitions. [2022-01-18 06:20:21,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:20:21,583 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:20:21,583 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:20:21,598 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 06:20:21,783 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,SelfDestructingSolverStorable42 [2022-01-18 06:20:21,784 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:20:21,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:20:21,784 INFO L85 PathProgramCache]: Analyzing trace with hash 534588811, now seen corresponding path program 41 times [2022-01-18 06:20:21,784 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:20:21,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335780542] [2022-01-18 06:20:21,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:20:21,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:20:21,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:22,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:20:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335780542] [2022-01-18 06:20:22,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335780542] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:20:22,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561131565] [2022-01-18 06:20:22,092 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:20:22,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:22,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:20:22,093 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 06:20:22,096 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 06:20:22,118 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-01-18 06:20:22,119 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:20:22,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:20:22,120 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:20:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:23,068 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:20:24,094 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:24,095 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561131565] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:20:24,095 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:20:24,095 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19, 20] total 54 [2022-01-18 06:20:24,095 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876081265] [2022-01-18 06:20:24,095 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:20:24,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2022-01-18 06:20:24,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:20:24,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2022-01-18 06:20:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=458, Invalid=2512, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 06:20:24,096 INFO L87 Difference]: Start difference. First operand 25902 states and 89936 transitions. Second operand has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:46,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:20:46,357 INFO L93 Difference]: Finished difference Result 53208 states and 171321 transitions. [2022-01-18 06:20:46,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 309 states. [2022-01-18 06:20:46,357 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:20:46,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:20:46,491 INFO L225 Difference]: With dead ends: 53208 [2022-01-18 06:20:46,492 INFO L226 Difference]: Without dead ends: 52586 [2022-01-18 06:20:46,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 326 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46434 ImplicationChecksByTransitivity, 20.0s TimeCoverageRelationStatistics Valid=16388, Invalid=90868, Unknown=0, NotChecked=0, Total=107256 [2022-01-18 06:20:46,496 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 1836 mSDsluCounter, 1441 mSDsCounter, 0 mSdLazyCounter, 5701 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1836 SdHoareTripleChecker+Valid, 1118 SdHoareTripleChecker+Invalid, 6726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 5701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-01-18 06:20:46,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1836 Valid, 1118 Invalid, 6726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1025 Valid, 5701 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-01-18 06:20:46,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52586 states. [2022-01-18 06:20:47,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52586 to 26033. [2022-01-18 06:20:47,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26033 states, 26032 states have (on average 3.4720728334357713) internal successors, (90385), 26032 states have internal predecessors, (90385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:47,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26033 states to 26033 states and 90385 transitions. [2022-01-18 06:20:47,338 INFO L78 Accepts]: Start accepts. Automaton has 26033 states and 90385 transitions. Word has length 36 [2022-01-18 06:20:47,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:20:47,338 INFO L470 AbstractCegarLoop]: Abstraction has 26033 states and 90385 transitions. [2022-01-18 06:20:47,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 55 states have (on average 1.7636363636363637) internal successors, (97), 54 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:20:47,338 INFO L276 IsEmpty]: Start isEmpty. Operand 26033 states and 90385 transitions. [2022-01-18 06:20:47,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:20:47,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:20:47,464 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:20:47,479 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 06:20:47,665 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,SelfDestructingSolverStorable43 [2022-01-18 06:20:47,665 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:20:47,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:20:47,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1576431985, now seen corresponding path program 42 times [2022-01-18 06:20:47,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:20:47,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908432508] [2022-01-18 06:20:47,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:20:47,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:20:47,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:20:47,937 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:47,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:20:47,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908432508] [2022-01-18 06:20:47,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908432508] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:20:47,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1052285120] [2022-01-18 06:20:47,938 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 06:20:47,938 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:20:47,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:20:47,939 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 06:20:47,939 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 06:20:47,962 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-01-18 06:20:47,962 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:20:47,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 24 conjunts are in the unsatisfiable core [2022-01-18 06:20:47,963 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:20:48,768 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:48,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:20:49,633 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:20:49,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1052285120] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:20:49,633 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:20:49,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 06:20:49,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095417796] [2022-01-18 06:20:49,633 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:20:49,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:20:49,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:20:49,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:20:49,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=2184, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:20:49,634 INFO L87 Difference]: Start difference. First operand 26033 states and 90385 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:07,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:21:07,399 INFO L93 Difference]: Finished difference Result 53222 states and 174091 transitions. [2022-01-18 06:21:07,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 274 states. [2022-01-18 06:21:07,399 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:21:07,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:21:07,544 INFO L225 Difference]: With dead ends: 53222 [2022-01-18 06:21:07,545 INFO L226 Difference]: Without dead ends: 52732 [2022-01-18 06:21:07,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 330 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 288 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34683 ImplicationChecksByTransitivity, 14.9s TimeCoverageRelationStatistics Valid=13109, Invalid=70701, Unknown=0, NotChecked=0, Total=83810 [2022-01-18 06:21:07,548 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 1961 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 6771 mSolverCounterSat, 933 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1961 SdHoareTripleChecker+Valid, 1019 SdHoareTripleChecker+Invalid, 7704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 933 IncrementalHoareTripleChecker+Valid, 6771 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:21:07,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1961 Valid, 1019 Invalid, 7704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [933 Valid, 6771 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-01-18 06:21:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52732 states. [2022-01-18 06:21:08,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52732 to 25812. [2022-01-18 06:21:08,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25812 states, 25811 states have (on average 3.473247840068188) internal successors, (89648), 25811 states have internal predecessors, (89648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:08,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25812 states to 25812 states and 89648 transitions. [2022-01-18 06:21:08,396 INFO L78 Accepts]: Start accepts. Automaton has 25812 states and 89648 transitions. Word has length 36 [2022-01-18 06:21:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:21:08,396 INFO L470 AbstractCegarLoop]: Abstraction has 25812 states and 89648 transitions. [2022-01-18 06:21:08,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 25812 states and 89648 transitions. [2022-01-18 06:21:08,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:21:08,441 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:21:08,441 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:21:08,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Forceful destruction successful, exit code 0 [2022-01-18 06:21:08,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:08,642 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:21:08,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:21:08,642 INFO L85 PathProgramCache]: Analyzing trace with hash 24674187, now seen corresponding path program 43 times [2022-01-18 06:21:08,642 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:21:08,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287444248] [2022-01-18 06:21:08,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:21:08,642 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:21:08,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:21:08,936 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:08,936 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:21:08,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287444248] [2022-01-18 06:21:08,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287444248] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:21:08,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215443689] [2022-01-18 06:21:08,937 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 06:21:08,937 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:08,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:21:08,938 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 06:21:08,938 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 06:21:08,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:21:08,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 06:21:08,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:21:10,093 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:10,094 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:21:12,876 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:12,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [215443689] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:21:12,876 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:21:12,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 19] total 52 [2022-01-18 06:21:12,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233107278] [2022-01-18 06:21:12,877 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:21:12,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-01-18 06:21:12,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:21:12,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-01-18 06:21:12,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=423, Invalid=2333, Unknown=0, NotChecked=0, Total=2756 [2022-01-18 06:21:12,877 INFO L87 Difference]: Start difference. First operand 25812 states and 89648 transitions. Second operand has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:45,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:21:45,752 INFO L93 Difference]: Finished difference Result 51318 states and 167310 transitions. [2022-01-18 06:21:45,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 230 states. [2022-01-18 06:21:45,752 INFO L78 Accepts]: Start accepts. Automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:21:45,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:21:45,889 INFO L225 Difference]: With dead ends: 51318 [2022-01-18 06:21:45,889 INFO L226 Difference]: Without dead ends: 51159 [2022-01-18 06:21:45,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 248 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25218 ImplicationChecksByTransitivity, 31.8s TimeCoverageRelationStatistics Valid=9421, Invalid=52829, Unknown=0, NotChecked=0, Total=62250 [2022-01-18 06:21:45,892 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 1121 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 622 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1121 SdHoareTripleChecker+Valid, 598 SdHoareTripleChecker+Invalid, 3908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 622 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-01-18 06:21:45,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1121 Valid, 598 Invalid, 3908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [622 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-01-18 06:21:45,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51159 states. [2022-01-18 06:21:46,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51159 to 26042. [2022-01-18 06:21:46,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26042 states, 26041 states have (on average 3.473368918244307) internal successors, (90450), 26041 states have internal predecessors, (90450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26042 states to 26042 states and 90450 transitions. [2022-01-18 06:21:46,826 INFO L78 Accepts]: Start accepts. Automaton has 26042 states and 90450 transitions. Word has length 36 [2022-01-18 06:21:46,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:21:46,826 INFO L470 AbstractCegarLoop]: Abstraction has 26042 states and 90450 transitions. [2022-01-18 06:21:46,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 53 states, 53 states have (on average 1.830188679245283) internal successors, (97), 52 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:21:46,826 INFO L276 IsEmpty]: Start isEmpty. Operand 26042 states and 90450 transitions. [2022-01-18 06:21:46,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:21:46,872 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:21:46,872 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:21:46,887 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 06:21:47,072 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:47,072 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:21:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:21:47,073 INFO L85 PathProgramCache]: Analyzing trace with hash 594461263, now seen corresponding path program 44 times [2022-01-18 06:21:47,073 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:21:47,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671623863] [2022-01-18 06:21:47,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:21:47,073 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:21:47,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:21:47,492 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:47,493 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:21:47,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671623863] [2022-01-18 06:21:47,493 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671623863] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:21:47,493 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194305375] [2022-01-18 06:21:47,493 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 06:21:47,493 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:21:47,493 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:21:47,494 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 06:21:47,498 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 06:21:47,519 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 06:21:47,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:21:47,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 06:21:47,520 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:21:48,460 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:48,461 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:21:50,972 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:21:50,972 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194305375] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:21:50,972 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:21:50,972 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 18] total 49 [2022-01-18 06:21:50,972 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171404822] [2022-01-18 06:21:50,972 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:21:50,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-01-18 06:21:50,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:21:50,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-01-18 06:21:50,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=406, Invalid=2044, Unknown=0, NotChecked=0, Total=2450 [2022-01-18 06:21:50,973 INFO L87 Difference]: Start difference. First operand 26042 states and 90450 transitions. Second operand has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:15,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:22:15,116 INFO L93 Difference]: Finished difference Result 50035 states and 165254 transitions. [2022-01-18 06:22:15,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 208 states. [2022-01-18 06:22:15,117 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:22:15,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:22:15,254 INFO L225 Difference]: With dead ends: 50035 [2022-01-18 06:22:15,254 INFO L226 Difference]: Without dead ends: 49755 [2022-01-18 06:22:15,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 221 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18619 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=6551, Invalid=42955, Unknown=0, NotChecked=0, Total=49506 [2022-01-18 06:22:15,258 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 873 mSDsluCounter, 765 mSDsCounter, 0 mSdLazyCounter, 6781 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 610 SdHoareTripleChecker+Invalid, 7261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 6781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-01-18 06:22:15,258 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [873 Valid, 610 Invalid, 7261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 6781 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-01-18 06:22:15,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49755 states. [2022-01-18 06:22:15,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49755 to 26216. [2022-01-18 06:22:15,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26216 states, 26215 states have (on average 3.4712950600801067) internal successors, (91000), 26215 states have internal predecessors, (91000), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:16,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26216 states to 26216 states and 91000 transitions. [2022-01-18 06:22:16,069 INFO L78 Accepts]: Start accepts. Automaton has 26216 states and 91000 transitions. Word has length 36 [2022-01-18 06:22:16,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:22:16,070 INFO L470 AbstractCegarLoop]: Abstraction has 26216 states and 91000 transitions. [2022-01-18 06:22:16,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 1.94) internal successors, (97), 49 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:16,070 INFO L276 IsEmpty]: Start isEmpty. Operand 26216 states and 91000 transitions. [2022-01-18 06:22:16,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:22:16,116 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:22:16,116 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:22:16,131 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 06:22:16,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2022-01-18 06:22:16,316 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:22:16,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:22:16,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1321167305, now seen corresponding path program 45 times [2022-01-18 06:22:16,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:22:16,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099421912] [2022-01-18 06:22:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:22:16,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:22:16,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:22:16,641 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:16,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:22:16,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099421912] [2022-01-18 06:22:16,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099421912] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:22:16,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [396364136] [2022-01-18 06:22:16,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 06:22:16,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:22:16,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:22:16,643 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 06:22:16,643 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 06:22:16,666 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 06:22:16,666 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:22:16,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 06:22:16,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:22:17,467 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:17,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:22:18,339 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:18,339 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [396364136] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:22:18,339 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:22:18,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 06:22:18,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473686794] [2022-01-18 06:22:18,339 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:22:18,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:22:18,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:22:18,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:22:18,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=2243, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:22:18,340 INFO L87 Difference]: Start difference. First operand 26216 states and 91000 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:31,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:22:31,835 INFO L93 Difference]: Finished difference Result 43564 states and 146287 transitions. [2022-01-18 06:22:31,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 193 states. [2022-01-18 06:22:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:22:31,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:22:31,957 INFO L225 Difference]: With dead ends: 43564 [2022-01-18 06:22:31,958 INFO L226 Difference]: Without dead ends: 43023 [2022-01-18 06:22:31,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 250 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 209 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16053 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=6202, Invalid=38108, Unknown=0, NotChecked=0, Total=44310 [2022-01-18 06:22:31,959 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 1126 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 5749 mSolverCounterSat, 480 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 1024 SdHoareTripleChecker+Invalid, 6229 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 480 IncrementalHoareTripleChecker+Valid, 5749 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-01-18 06:22:31,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1126 Valid, 1024 Invalid, 6229 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [480 Valid, 5749 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-01-18 06:22:32,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43023 states. [2022-01-18 06:22:32,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43023 to 26298. [2022-01-18 06:22:32,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26298 states, 26297 states have (on average 3.473590143362361) internal successors, (91345), 26297 states have internal predecessors, (91345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:32,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26298 states to 26298 states and 91345 transitions. [2022-01-18 06:22:32,700 INFO L78 Accepts]: Start accepts. Automaton has 26298 states and 91345 transitions. Word has length 36 [2022-01-18 06:22:32,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:22:32,700 INFO L470 AbstractCegarLoop]: Abstraction has 26298 states and 91345 transitions. [2022-01-18 06:22:32,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:32,700 INFO L276 IsEmpty]: Start isEmpty. Operand 26298 states and 91345 transitions. [2022-01-18 06:22:32,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:22:32,746 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:22:32,746 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:22:32,761 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 06:22:32,946 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2022-01-18 06:22:32,946 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:22:32,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:22:32,947 INFO L85 PathProgramCache]: Analyzing trace with hash -365299261, now seen corresponding path program 46 times [2022-01-18 06:22:32,947 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:22:32,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748219380] [2022-01-18 06:22:32,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:22:32,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:22:32,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:22:33,254 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:33,255 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:22:33,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748219380] [2022-01-18 06:22:33,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748219380] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:22:33,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1167954845] [2022-01-18 06:22:33,255 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 06:22:33,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:22:33,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:22:33,256 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 06:22:33,258 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 06:22:33,278 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 06:22:33,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:22:33,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-01-18 06:22:33,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:22:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:34,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 06:22:36,854 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:36,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1167954845] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 06:22:36,854 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 06:22:36,854 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18, 19] total 51 [2022-01-18 06:22:36,854 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261408631] [2022-01-18 06:22:36,854 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 06:22:36,855 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2022-01-18 06:22:36,855 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 06:22:36,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2022-01-18 06:22:36,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=401, Invalid=2251, Unknown=0, NotChecked=0, Total=2652 [2022-01-18 06:22:36,855 INFO L87 Difference]: Start difference. First operand 26298 states and 91345 transitions. Second operand has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:57,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 06:22:57,554 INFO L93 Difference]: Finished difference Result 47654 states and 155494 transitions. [2022-01-18 06:22:57,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 203 states. [2022-01-18 06:22:57,554 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2022-01-18 06:22:57,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 06:22:57,668 INFO L225 Difference]: With dead ends: 47654 [2022-01-18 06:22:57,669 INFO L226 Difference]: Without dead ends: 47473 [2022-01-18 06:22:57,670 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 259 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 219 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18883 ImplicationChecksByTransitivity, 18.9s TimeCoverageRelationStatistics Valid=6854, Invalid=41766, Unknown=0, NotChecked=0, Total=48620 [2022-01-18 06:22:57,671 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 1304 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 4831 mSolverCounterSat, 641 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 768 SdHoareTripleChecker+Invalid, 5472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 641 IncrementalHoareTripleChecker+Valid, 4831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-01-18 06:22:57,671 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1304 Valid, 768 Invalid, 5472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [641 Valid, 4831 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-01-18 06:22:57,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47473 states. [2022-01-18 06:22:58,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47473 to 26952. [2022-01-18 06:22:58,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26952 states, 26951 states have (on average 3.465771214426181) internal successors, (93406), 26951 states have internal predecessors, (93406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:58,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26952 states to 26952 states and 93406 transitions. [2022-01-18 06:22:58,441 INFO L78 Accepts]: Start accepts. Automaton has 26952 states and 93406 transitions. Word has length 36 [2022-01-18 06:22:58,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 06:22:58,442 INFO L470 AbstractCegarLoop]: Abstraction has 26952 states and 93406 transitions. [2022-01-18 06:22:58,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 52 states have (on average 1.8653846153846154) internal successors, (97), 51 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 06:22:58,442 INFO L276 IsEmpty]: Start isEmpty. Operand 26952 states and 93406 transitions. [2022-01-18 06:22:58,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-01-18 06:22:58,488 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 06:22:58,488 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 06:22:58,503 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Forceful destruction successful, exit code 0 [2022-01-18 06:22:58,689 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,SelfDestructingSolverStorable48 [2022-01-18 06:22:58,689 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2022-01-18 06:22:58,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 06:22:58,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1249566785, now seen corresponding path program 47 times [2022-01-18 06:22:58,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 06:22:58,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221780964] [2022-01-18 06:22:58,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 06:22:58,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 06:22:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 06:22:58,999 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:22:58,999 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 06:22:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221780964] [2022-01-18 06:22:58,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221780964] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 06:22:58,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40153292] [2022-01-18 06:22:58,999 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 06:22:58,999 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:22:58,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 06:22:59,000 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 06:22:59,001 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 06:22:59,024 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2022-01-18 06:22:59,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 06:22:59,024 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 25 conjunts are in the unsatisfiable core [2022-01-18 06:22:59,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 06:23:00,629 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 06:23:00,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... Received shutdown request... [2022-01-18 06:23:02,563 WARN L244 SmtUtils]: Removed 2 from assertion stack [2022-01-18 06:23:02,564 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 06:23:02,564 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 06:23:02,565 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (3 of 4 remaining) [2022-01-18 06:23:02,580 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Ended with exit code 0 [2022-01-18 06:23:02,765 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49,47 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 06:23:02,765 WARN L594 AbstractCegarLoop]: Verification canceled: while BasicCegarLoop was analyzing trace of length 37 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 2ms.. [2022-01-18 06:23:02,766 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2022-01-18 06:23:02,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2022-01-18 06:23:02,767 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2022-01-18 06:23:02,769 INFO L732 BasicCegarLoop]: Path program histogram: [47, 1, 1, 1] [2022-01-18 06:23:02,770 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 06:23:02,770 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 06:23:02,771 INFO L202 PluginConnector]: Adding new model threaded-sum-3.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 06:23:02 BasicIcfg [2022-01-18 06:23:02,771 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 06:23:02,771 INFO L158 Benchmark]: Toolchain (without parser) took 741115.58ms. Allocated memory was 375.4MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 343.6MB in the beginning and 609.1MB in the end (delta: -265.5MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-18 06:23:02,772 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.12ms. Allocated memory is still 375.4MB. Free memory is still 344.8MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:23:02,772 INFO L158 Benchmark]: Boogie Procedure Inliner took 20.04ms. Allocated memory is still 375.4MB. Free memory was 343.6MB in the beginning and 342.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2022-01-18 06:23:02,772 INFO L158 Benchmark]: Boogie Preprocessor took 16.44ms. Allocated memory is still 375.4MB. Free memory was 342.1MB in the beginning and 341.1MB in the end (delta: 946.0kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 06:23:02,772 INFO L158 Benchmark]: RCFGBuilder took 225.40ms. Allocated memory is still 375.4MB. Free memory was 341.0MB in the beginning and 331.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2022-01-18 06:23:02,772 INFO L158 Benchmark]: TraceAbstraction took 740849.60ms. Allocated memory was 375.4MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 330.5MB in the beginning and 609.1MB in the end (delta: -278.7MB). Peak memory consumption was 1.2GB. Max. memory is 16.0GB. [2022-01-18 06:23:02,772 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 0.12ms. Allocated memory is still 375.4MB. Free memory is still 344.8MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 20.04ms. Allocated memory is still 375.4MB. Free memory was 343.6MB in the beginning and 342.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.44ms. Allocated memory is still 375.4MB. Free memory was 342.1MB in the beginning and 341.1MB in the end (delta: 946.0kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 225.40ms. Allocated memory is still 375.4MB. Free memory was 341.0MB in the beginning and 331.0MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * TraceAbstraction took 740849.60ms. Allocated memory was 375.4MB in the beginning and 1.8GB in the end (delta: 1.5GB). Free memory was 330.5MB in the beginning and 609.1MB in the end (delta: -278.7MB). Peak memory consumption was 1.2GB. 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: 78]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while BasicCegarLoop was analyzing trace of length 37 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 2ms.. - TimeoutResultAtElement [Line: 71]: 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 37 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 2ms.. - TimeoutResultAtElement [Line: 72]: 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 37 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 2ms.. - TimeoutResultAtElement [Line: 71]: 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 37 with TraceHistMax 4,while TraceCheckSpWp was constructing backward predicates,while SimplifyDDAWithTimeout was simplifying term of DAG size 5 for 2ms.. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 47 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 740.7s, OverallIterations: 50, TraceHistogramMax: 4, PathProgramHistogramMax: 47, EmptinessCheckTime: 1.1s, AutomataDifference: 581.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 38446 SdHoareTripleChecker+Valid, 78.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 38446 mSDsluCounter, 25301 SdHoareTripleChecker+Invalid, 67.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 33611 mSDsCounter, 19661 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 158407 IncrementalHoareTripleChecker+Invalid, 178068 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19661 mSolverCounterUnsat, 1212 mSDtfsCounter, 158407 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9305 GetRequests, 1756 SyntacticMatches, 110 SemanticMatches, 7439 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572420 ImplicationChecksByTransitivity, 529.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26952occurred in iteration=49, InterpolantAutomatonStates: 6712, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 16.8s AutomataMinimizationTime, 49 MinimizatonAttempts, 494440 StatesRemovedByMinimization, 47 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 126.2s InterpolantComputationTime, 3179 NumberOfCodeBlocks, 3179 NumberOfCodeBlocksAsserted, 181 NumberOfCheckSat, 4580 ConstructedInterpolants, 0 QuantifiedInterpolants, 168478 SizeOfPredicates, 544 NumberOfNonLiveVariables, 2845 ConjunctsInSsa, 885 ConjunctsInUnsatCore, 139 InterpolantComputations, 4 PerfectInterpolantSequences, 96/2067 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