/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/test/hard1.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 07:38:51,695 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 07:38:51,696 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 07:38:51,764 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 07:38:51,810 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 07:38:51,840 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 07:38:51,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 07:38:51,841 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 07:38:51,841 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 07:38:51,841 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 07:38:51,841 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 07:38:51,842 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 07:38:51,842 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 07:38:51,842 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 07:38:51,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 07:38:51,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 07:38:51,843 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 07:38:51,844 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 07:38:51,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 07:38:51,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 07:38:51,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 07:38:51,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 07:38:51,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 07:38:51,844 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 07:38:51,844 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 07:38:51,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 07:38:51,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 07:38:51,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 07:38:51,845 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 07:38:51,845 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 07:38:51,845 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 07:38:52,043 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 07:38:52,059 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 07:38:52,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 07:38:52,062 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 07:38:52,063 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 07:38:52,064 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/hard1.wvr.bpl [2022-01-18 07:38:52,064 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/test/hard1.wvr.bpl' [2022-01-18 07:38:52,085 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 07:38:52,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 07:38:52,087 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 07:38:52,087 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 07:38:52,087 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 07:38:52,097 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,103 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,110 INFO L137 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 07:38:52,111 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 07:38:52,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 07:38:52,112 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 07:38:52,112 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 07:38:52,117 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,118 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,118 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,120 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,123 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 07:38:52,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 07:38:52,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 07:38:52,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 07:38:52,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/1) ... [2022-01-18 07:38:52,132 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 07:38:52,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:52,149 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 07:38:52,164 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 07:38:52,196 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2022-01-18 07:38:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-01-18 07:38:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-01-18 07:38:52,196 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2022-01-18 07:38:52,196 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-01-18 07:38:52,196 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-01-18 07:38:52,197 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 07:38:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 07:38:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 07:38:52,197 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread3 given in one single declaration [2022-01-18 07:38:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-01-18 07:38:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-01-18 07:38:52,197 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread4 given in one single declaration [2022-01-18 07:38:52,197 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-01-18 07:38:52,197 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-01-18 07:38:52,198 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 07:38:52,232 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 07:38:52,233 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 07:38:52,338 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 07:38:52,355 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 07:38:52,355 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-01-18 07:38:52,357 INFO L202 PluginConnector]: Adding new model hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 07:38:52 BoogieIcfgContainer [2022-01-18 07:38:52,357 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 07:38:52,359 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 07:38:52,359 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 07:38:52,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 07:38:52,362 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 07:38:52" (1/2) ... [2022-01-18 07:38:52,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760d3d87 and model type hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 07:38:52, skipping insertion in model container [2022-01-18 07:38:52,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 07:38:52" (2/2) ... [2022-01-18 07:38:52,367 INFO L111 eAbstractionObserver]: Analyzing ICFG hard1.wvr.bpl [2022-01-18 07:38:52,371 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 07:38:52,371 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 07:38:52,371 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 07:38:52,371 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 07:38:52,425 INFO L148 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-01-18 07:38:52,520 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 07:38:52,526 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 07:38:52,527 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 07:38:52,537 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 42 places, 33 transitions, 98 flow [2022-01-18 07:38:52,647 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:52,651 INFO L276 IsEmpty]: Start isEmpty. Operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:52,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-01-18 07:38:52,670 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:52,671 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:52,671 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:52,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:52,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1576666978, now seen corresponding path program 1 times [2022-01-18 07:38:52,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:52,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094128908] [2022-01-18 07:38:52,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:52,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:52,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:52,789 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 07:38:52,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:52,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094128908] [2022-01-18 07:38:52,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094128908] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:38:52,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:38:52,791 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 07:38:52,792 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445097499] [2022-01-18 07:38:52,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:38:52,796 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-01-18 07:38:52,797 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:52,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-01-18 07:38:52,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 07:38:52,824 INFO L87 Difference]: Start difference. First operand has 429 states, 428 states have (on average 3.8621495327102804) internal successors, (1653), 428 states have internal predecessors, (1653), 0 states have call successors, (0), 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 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:52,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:52,916 INFO L93 Difference]: Finished difference Result 854 states and 3302 transitions. [2022-01-18 07:38:52,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-01-18 07:38:52,920 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2022-01-18 07:38:52,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:52,940 INFO L225 Difference]: With dead ends: 854 [2022-01-18 07:38:52,941 INFO L226 Difference]: Without dead ends: 823 [2022-01-18 07:38:52,942 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-01-18 07:38:52,946 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 4 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:52,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 28 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:38:52,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823 states. [2022-01-18 07:38:53,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823 to 558. [2022-01-18 07:38:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 557 states have (on average 3.8545780969479355) internal successors, (2147), 557 states have internal predecessors, (2147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:53,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 2147 transitions. [2022-01-18 07:38:53,091 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 2147 transitions. Word has length 19 [2022-01-18 07:38:53,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:53,092 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 2147 transitions. [2022-01-18 07:38:53,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 2 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:53,093 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 2147 transitions. [2022-01-18 07:38:53,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 07:38:53,097 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:53,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:53,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 07:38:53,098 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:53,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:53,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1245579906, now seen corresponding path program 1 times [2022-01-18 07:38:53,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:53,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396038537] [2022-01-18 07:38:53,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:53,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:53,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:53,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396038537] [2022-01-18 07:38:53,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396038537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:53,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [942070921] [2022-01-18 07:38:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:53,164 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:53,171 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 07:38:53,183 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 07:38:53,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:53,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 07:38:53,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:53,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:53,349 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:53,484 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:53,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [942070921] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:53,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 07:38:53,486 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 7 [2022-01-18 07:38:53,487 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220066266] [2022-01-18 07:38:53,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:38:53,492 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 07:38:53,492 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:53,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 07:38:53,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 07:38:53,493 INFO L87 Difference]: Start difference. First operand 558 states and 2147 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 07:38:53,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:53,593 INFO L93 Difference]: Finished difference Result 1262 states and 4751 transitions. [2022-01-18 07:38:53,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 07:38:53,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 07:38:53,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:53,603 INFO L225 Difference]: With dead ends: 1262 [2022-01-18 07:38:53,604 INFO L226 Difference]: Without dead ends: 1262 [2022-01-18 07:38:53,604 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2022-01-18 07:38:53,610 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 32 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:53,611 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 30 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:38:53,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1262 states. [2022-01-18 07:38:53,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1262 to 692. [2022-01-18 07:38:53,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 691 states have (on average 3.962373371924747) internal successors, (2738), 691 states have internal predecessors, (2738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:53,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 2738 transitions. [2022-01-18 07:38:53,670 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 2738 transitions. Word has length 21 [2022-01-18 07:38:53,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:53,671 INFO L470 AbstractCegarLoop]: Abstraction has 692 states and 2738 transitions. [2022-01-18 07:38:53,672 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 07:38:53,672 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 2738 transitions. [2022-01-18 07:38:53,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 07:38:53,676 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:53,677 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 07:38:53,701 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 07:38:53,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:53,891 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:53,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:53,892 INFO L85 PathProgramCache]: Analyzing trace with hash 117815332, now seen corresponding path program 1 times [2022-01-18 07:38:53,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:53,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346701266] [2022-01-18 07:38:53,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:53,892 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:53,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:53,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346701266] [2022-01-18 07:38:53,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346701266] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:53,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562105723] [2022-01-18 07:38:53,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:53,950 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:53,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:53,953 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 07:38:53,956 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 07:38:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:54,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 3 conjunts are in the unsatisfiable core [2022-01-18 07:38:54,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:54,073 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:54,073 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:54,183 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562105723] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:54,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 07:38:54,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 6 [2022-01-18 07:38:54,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043005378] [2022-01-18 07:38:54,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:38:54,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 07:38:54,186 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:54,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 07:38:54,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-18 07:38:54,187 INFO L87 Difference]: Start difference. First operand 692 states and 2738 transitions. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 07:38:54,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:54,262 INFO L93 Difference]: Finished difference Result 1343 states and 5074 transitions. [2022-01-18 07:38:54,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-01-18 07:38:54,262 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 07:38:54,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:54,272 INFO L225 Difference]: With dead ends: 1343 [2022-01-18 07:38:54,272 INFO L226 Difference]: Without dead ends: 1343 [2022-01-18 07:38:54,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-01-18 07:38:54,274 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:54,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 29 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:38:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1343 states. [2022-01-18 07:38:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1343 to 797. [2022-01-18 07:38:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 797 states, 796 states have (on average 4.006281407035176) internal successors, (3189), 796 states have internal predecessors, (3189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 797 states to 797 states and 3189 transitions. [2022-01-18 07:38:54,313 INFO L78 Accepts]: Start accepts. Automaton has 797 states and 3189 transitions. Word has length 21 [2022-01-18 07:38:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:54,314 INFO L470 AbstractCegarLoop]: Abstraction has 797 states and 3189 transitions. [2022-01-18 07:38:54,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 3 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 07:38:54,314 INFO L276 IsEmpty]: Start isEmpty. Operand 797 states and 3189 transitions. [2022-01-18 07:38:54,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 07:38:54,317 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:54,317 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 07:38:54,343 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 07:38:54,531 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,SelfDestructingSolverStorable2 [2022-01-18 07:38:54,532 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:54,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:54,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1519093540, now seen corresponding path program 1 times [2022-01-18 07:38:54,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:54,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325926398] [2022-01-18 07:38:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:54,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:54,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:54,573 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:54,573 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:54,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325926398] [2022-01-18 07:38:54,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325926398] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:38:54,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:38:54,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:38:54,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083464040] [2022-01-18 07:38:54,574 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:38:54,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:38:54,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:54,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:38:54,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:38:54,575 INFO L87 Difference]: Start difference. First operand 797 states and 3189 transitions. Second operand has 5 states, 5 states have (on average 4.2) 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 07:38:54,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:54,695 INFO L93 Difference]: Finished difference Result 1019 states and 3647 transitions. [2022-01-18 07:38:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:38:54,695 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) 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 07:38:54,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:54,701 INFO L225 Difference]: With dead ends: 1019 [2022-01-18 07:38:54,702 INFO L226 Difference]: Without dead ends: 906 [2022-01-18 07:38:54,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:38:54,704 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 42 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:54,705 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 35 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:38:54,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 906 states. [2022-01-18 07:38:54,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 906 to 775. [2022-01-18 07:38:54,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 775 states, 774 states have (on average 3.739018087855297) internal successors, (2894), 774 states have internal predecessors, (2894), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:54,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 775 states to 775 states and 2894 transitions. [2022-01-18 07:38:54,732 INFO L78 Accepts]: Start accepts. Automaton has 775 states and 2894 transitions. Word has length 21 [2022-01-18 07:38:54,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:54,732 INFO L470 AbstractCegarLoop]: Abstraction has 775 states and 2894 transitions. [2022-01-18 07:38:54,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) 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 07:38:54,733 INFO L276 IsEmpty]: Start isEmpty. Operand 775 states and 2894 transitions. [2022-01-18 07:38:54,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-01-18 07:38:54,736 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:54,736 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 07:38:54,738 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 07:38:54,738 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:54,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:54,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1969827620, now seen corresponding path program 2 times [2022-01-18 07:38:54,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:54,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645889371] [2022-01-18 07:38:54,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:54,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:54,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:54,789 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:54,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:54,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645889371] [2022-01-18 07:38:54,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645889371] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:38:54,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:38:54,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:38:54,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092676566] [2022-01-18 07:38:54,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:38:54,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:38:54,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:54,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:38:54,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:38:54,791 INFO L87 Difference]: Start difference. First operand 775 states and 2894 transitions. Second operand has 5 states, 5 states have (on average 4.2) 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 07:38:54,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:54,851 INFO L93 Difference]: Finished difference Result 930 states and 3513 transitions. [2022-01-18 07:38:54,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:38:54,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) 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 07:38:54,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:54,864 INFO L225 Difference]: With dead ends: 930 [2022-01-18 07:38:54,865 INFO L226 Difference]: Without dead ends: 930 [2022-01-18 07:38:54,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:38:54,867 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:54,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 28 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:38:54,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-01-18 07:38:54,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 658. [2022-01-18 07:38:54,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 3.8158295281582952) internal successors, (2507), 657 states have internal predecessors, (2507), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:54,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 2507 transitions. [2022-01-18 07:38:54,890 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 2507 transitions. Word has length 21 [2022-01-18 07:38:54,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:54,890 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 2507 transitions. [2022-01-18 07:38:54,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) 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 07:38:54,891 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 2507 transitions. [2022-01-18 07:38:54,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:54,893 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:54,893 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:38:54,893 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 07:38:54,894 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:54,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:54,895 INFO L85 PathProgramCache]: Analyzing trace with hash -229280956, now seen corresponding path program 1 times [2022-01-18 07:38:54,895 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:54,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241730990] [2022-01-18 07:38:54,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:54,896 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:54,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:54,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:54,953 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241730990] [2022-01-18 07:38:54,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241730990] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:54,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1908023890] [2022-01-18 07:38:54,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:54,953 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:54,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:54,955 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 07:38:54,974 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 07:38:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:54,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:38:54,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:55,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:55,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:55,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1908023890] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:55,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:55,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2022-01-18 07:38:55,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725823764] [2022-01-18 07:38:55,166 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:55,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 07:38:55,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 07:38:55,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 07:38:55,167 INFO L87 Difference]: Start difference. First operand 658 states and 2507 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:55,387 INFO L93 Difference]: Finished difference Result 1938 states and 7091 transitions. [2022-01-18 07:38:55,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:38:55,388 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:38:55,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:55,401 INFO L225 Difference]: With dead ends: 1938 [2022-01-18 07:38:55,401 INFO L226 Difference]: Without dead ends: 1938 [2022-01-18 07:38:55,402 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:38:55,403 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 142 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:55,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 82 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:55,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1938 states. [2022-01-18 07:38:55,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1938 to 916. [2022-01-18 07:38:55,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 916 states, 915 states have (on average 3.8) internal successors, (3477), 915 states have internal predecessors, (3477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:55,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 916 states to 916 states and 3477 transitions. [2022-01-18 07:38:55,445 INFO L78 Accepts]: Start accepts. Automaton has 916 states and 3477 transitions. Word has length 23 [2022-01-18 07:38:55,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:55,446 INFO L470 AbstractCegarLoop]: Abstraction has 916 states and 3477 transitions. [2022-01-18 07:38:55,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 8 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:55,446 INFO L276 IsEmpty]: Start isEmpty. Operand 916 states and 3477 transitions. [2022-01-18 07:38:55,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:55,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:55,449 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] [2022-01-18 07:38:55,476 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 07:38:55,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:55,672 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:55,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:55,672 INFO L85 PathProgramCache]: Analyzing trace with hash 869839812, now seen corresponding path program 1 times [2022-01-18 07:38:55,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:55,672 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650594105] [2022-01-18 07:38:55,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:55,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:55,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:55,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:55,748 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:55,748 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650594105] [2022-01-18 07:38:55,748 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650594105] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:55,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1857251234] [2022-01-18 07:38:55,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:55,749 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:55,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:55,750 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 07:38:55,756 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 07:38:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:55,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:55,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:55,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:55,986 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:55,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1857251234] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:55,987 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:55,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 07:38:55,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762032605] [2022-01-18 07:38:55,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:55,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 07:38:55,988 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:55,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 07:38:55,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 07:38:55,990 INFO L87 Difference]: Start difference. First operand 916 states and 3477 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:56,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:56,294 INFO L93 Difference]: Finished difference Result 2103 states and 7751 transitions. [2022-01-18 07:38:56,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:38:56,295 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:38:56,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:56,306 INFO L225 Difference]: With dead ends: 2103 [2022-01-18 07:38:56,306 INFO L226 Difference]: Without dead ends: 1818 [2022-01-18 07:38:56,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:38:56,307 INFO L933 BasicCegarLoop]: 63 mSDtfsCounter, 64 mSDsluCounter, 199 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 298 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:56,307 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 191 Invalid, 298 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-01-18 07:38:56,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1131. [2022-01-18 07:38:56,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1130 states have (on average 3.842477876106195) internal successors, (4342), 1130 states have internal predecessors, (4342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:56,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 4342 transitions. [2022-01-18 07:38:56,350 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 4342 transitions. Word has length 23 [2022-01-18 07:38:56,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:56,350 INFO L470 AbstractCegarLoop]: Abstraction has 1131 states and 4342 transitions. [2022-01-18 07:38:56,350 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:56,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 4342 transitions. [2022-01-18 07:38:56,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:56,354 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:56,354 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] [2022-01-18 07:38:56,382 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 07:38:56,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:56,578 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:56,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:56,579 INFO L85 PathProgramCache]: Analyzing trace with hash -640056498, now seen corresponding path program 2 times [2022-01-18 07:38:56,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:56,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235367904] [2022-01-18 07:38:56,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:56,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:56,653 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:56,653 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:56,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235367904] [2022-01-18 07:38:56,653 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235367904] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:56,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996548956] [2022-01-18 07:38:56,653 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:38:56,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:56,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:56,655 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 07:38:56,684 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 07:38:56,695 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:38:56,695 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:56,696 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:56,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:56,790 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:56,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:56,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996548956] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:56,948 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:56,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 07:38:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077862900] [2022-01-18 07:38:56,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:56,948 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 07:38:56,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 07:38:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 07:38:56,949 INFO L87 Difference]: Start difference. First operand 1131 states and 4342 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 07:38:57,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:57,234 INFO L93 Difference]: Finished difference Result 1972 states and 7446 transitions. [2022-01-18 07:38:57,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:38:57,234 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 23 [2022-01-18 07:38:57,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:57,246 INFO L225 Difference]: With dead ends: 1972 [2022-01-18 07:38:57,246 INFO L226 Difference]: Without dead ends: 1887 [2022-01-18 07:38:57,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:38:57,247 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 87 mSDsluCounter, 119 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:57,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 87 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2022-01-18 07:38:57,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1293. [2022-01-18 07:38:57,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1293 states, 1292 states have (on average 3.876934984520124) internal successors, (5009), 1292 states have internal predecessors, (5009), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:57,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1293 states to 1293 states and 5009 transitions. [2022-01-18 07:38:57,291 INFO L78 Accepts]: Start accepts. Automaton has 1293 states and 5009 transitions. Word has length 23 [2022-01-18 07:38:57,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:57,291 INFO L470 AbstractCegarLoop]: Abstraction has 1293 states and 5009 transitions. [2022-01-18 07:38:57,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 7 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 07:38:57,292 INFO L276 IsEmpty]: Start isEmpty. Operand 1293 states and 5009 transitions. [2022-01-18 07:38:57,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:57,297 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:57,297 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] [2022-01-18 07:38:57,323 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 07:38:57,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:57,512 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:57,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:57,512 INFO L85 PathProgramCache]: Analyzing trace with hash -151839806, now seen corresponding path program 3 times [2022-01-18 07:38:57,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:57,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950881755] [2022-01-18 07:38:57,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:57,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:57,570 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:57,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950881755] [2022-01-18 07:38:57,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950881755] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:57,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514228132] [2022-01-18 07:38:57,571 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:38:57,571 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:57,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:57,572 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 07:38:57,600 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 07:38:57,609 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:38:57,609 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:57,610 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:57,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:57,693 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:57,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:57,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:57,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514228132] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:57,840 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:57,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 07:38:57,841 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47474048] [2022-01-18 07:38:57,841 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:57,841 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 07:38:57,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:57,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 07:38:57,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 07:38:57,842 INFO L87 Difference]: Start difference. First operand 1293 states and 5009 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 07:38:58,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:58,039 INFO L93 Difference]: Finished difference Result 2093 states and 7918 transitions. [2022-01-18 07:38:58,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:38:58,040 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 23 [2022-01-18 07:38:58,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:58,056 INFO L225 Difference]: With dead ends: 2093 [2022-01-18 07:38:58,056 INFO L226 Difference]: Without dead ends: 2038 [2022-01-18 07:38:58,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:38:58,057 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 91 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 189 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:58,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [91 Valid, 87 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 189 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:38:58,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2038 states. [2022-01-18 07:38:58,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2038 to 1558. [2022-01-18 07:38:58,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1558 states, 1557 states have (on average 3.897880539499037) internal successors, (6069), 1557 states have internal predecessors, (6069), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:58,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1558 states to 1558 states and 6069 transitions. [2022-01-18 07:38:58,144 INFO L78 Accepts]: Start accepts. Automaton has 1558 states and 6069 transitions. Word has length 23 [2022-01-18 07:38:58,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:58,144 INFO L470 AbstractCegarLoop]: Abstraction has 1558 states and 6069 transitions. [2022-01-18 07:38:58,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 07:38:58,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1558 states and 6069 transitions. [2022-01-18 07:38:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:58,151 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:58,151 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] [2022-01-18 07:38:58,176 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 07:38:58,365 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:58,365 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:58,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:58,366 INFO L85 PathProgramCache]: Analyzing trace with hash -277999770, now seen corresponding path program 1 times [2022-01-18 07:38:58,366 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:58,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848114065] [2022-01-18 07:38:58,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:58,366 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:58,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:58,428 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:58,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:58,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848114065] [2022-01-18 07:38:58,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848114065] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:58,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285804126] [2022-01-18 07:38:58,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:58,429 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:58,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:58,430 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 07:38:58,459 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 07:38:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:58,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:58,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:58,524 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:58,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:58,629 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:38:58,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285804126] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:58,630 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:58,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-01-18 07:38:58,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351830713] [2022-01-18 07:38:58,630 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:58,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 07:38:58,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:58,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 07:38:58,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-01-18 07:38:58,631 INFO L87 Difference]: Start difference. First operand 1558 states and 6069 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:58,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:58,805 INFO L93 Difference]: Finished difference Result 3079 states and 11859 transitions. [2022-01-18 07:38:58,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 07:38:58,805 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:38:58,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:58,834 INFO L225 Difference]: With dead ends: 3079 [2022-01-18 07:38:58,834 INFO L226 Difference]: Without dead ends: 3024 [2022-01-18 07:38:58,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 37 SyntacticMatches, 8 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-01-18 07:38:58,835 INFO L933 BasicCegarLoop]: 55 mSDtfsCounter, 68 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 151 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:58,836 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 151 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:38:58,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2022-01-18 07:38:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 1833. [2022-01-18 07:38:58,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1833 states, 1832 states have (on average 3.99617903930131) internal successors, (7321), 1832 states have internal predecessors, (7321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:58,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1833 states to 1833 states and 7321 transitions. [2022-01-18 07:38:58,903 INFO L78 Accepts]: Start accepts. Automaton has 1833 states and 7321 transitions. Word has length 23 [2022-01-18 07:38:58,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:58,903 INFO L470 AbstractCegarLoop]: Abstraction has 1833 states and 7321 transitions. [2022-01-18 07:38:58,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:58,904 INFO L276 IsEmpty]: Start isEmpty. Operand 1833 states and 7321 transitions. [2022-01-18 07:38:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:58,910 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:58,910 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] [2022-01-18 07:38:58,934 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 07:38:59,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:59,134 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:59,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1737160546, now seen corresponding path program 2 times [2022-01-18 07:38:59,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:59,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353292423] [2022-01-18 07:38:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:59,135 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:59,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:38:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:59,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:38:59,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353292423] [2022-01-18 07:38:59,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353292423] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:38:59,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267586877] [2022-01-18 07:38:59,192 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:38:59,193 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:38:59,193 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:38:59,194 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 07:38:59,199 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 07:38:59,224 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:38:59,224 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:38:59,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:38:59,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:38:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:59,297 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:38:59,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:38:59,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267586877] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:38:59,440 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:38:59,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 07:38:59,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079815678] [2022-01-18 07:38:59,441 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:38:59,441 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 07:38:59,441 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:38:59,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 07:38:59,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 07:38:59,442 INFO L87 Difference]: Start difference. First operand 1833 states and 7321 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 07:38:59,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:38:59,660 INFO L93 Difference]: Finished difference Result 2822 states and 11041 transitions. [2022-01-18 07:38:59,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 07:38:59,661 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 23 [2022-01-18 07:38:59,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:38:59,672 INFO L225 Difference]: With dead ends: 2822 [2022-01-18 07:38:59,672 INFO L226 Difference]: Without dead ends: 2704 [2022-01-18 07:38:59,672 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:38:59,673 INFO L933 BasicCegarLoop]: 38 mSDtfsCounter, 76 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:38:59,673 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 124 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:38:59,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2704 states. [2022-01-18 07:38:59,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2704 to 2151. [2022-01-18 07:38:59,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2151 states, 2150 states have (on average 4.050697674418605) internal successors, (8709), 2150 states have internal predecessors, (8709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:38:59,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2151 states to 2151 states and 8709 transitions. [2022-01-18 07:38:59,738 INFO L78 Accepts]: Start accepts. Automaton has 2151 states and 8709 transitions. Word has length 23 [2022-01-18 07:38:59,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:38:59,738 INFO L470 AbstractCegarLoop]: Abstraction has 2151 states and 8709 transitions. [2022-01-18 07:38:59,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 07:38:59,739 INFO L276 IsEmpty]: Start isEmpty. Operand 2151 states and 8709 transitions. [2022-01-18 07:38:59,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:38:59,747 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:38:59,747 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] [2022-01-18 07:38:59,773 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 07:38:59,963 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,SelfDestructingSolverStorable10 [2022-01-18 07:38:59,964 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:38:59,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:38:59,964 INFO L85 PathProgramCache]: Analyzing trace with hash 786210190, now seen corresponding path program 3 times [2022-01-18 07:38:59,964 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:38:59,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200842994] [2022-01-18 07:38:59,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:38:59,964 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:38:59,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:00,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:00,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200842994] [2022-01-18 07:39:00,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200842994] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:00,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [734118755] [2022-01-18 07:39:00,023 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:00,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:00,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:00,024 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 07:39:00,026 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 07:39:00,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:39:00,052 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:00,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:39:00,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:00,128 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:00,128 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:00,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:00,269 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [734118755] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:00,270 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:00,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 7 [2022-01-18 07:39:00,270 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50089763] [2022-01-18 07:39:00,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:00,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 07:39:00,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:00,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 07:39:00,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-01-18 07:39:00,271 INFO L87 Difference]: Start difference. First operand 2151 states and 8709 transitions. Second operand has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 07:39:00,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:00,511 INFO L93 Difference]: Finished difference Result 3397 states and 13566 transitions. [2022-01-18 07:39:00,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 07:39:00,512 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 23 [2022-01-18 07:39:00,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:00,527 INFO L225 Difference]: With dead ends: 3397 [2022-01-18 07:39:00,527 INFO L226 Difference]: Without dead ends: 3342 [2022-01-18 07:39:00,527 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 35 SyntacticMatches, 9 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:39:00,528 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 64 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:00,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 125 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:00,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3342 states. [2022-01-18 07:39:00,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3342 to 2343. [2022-01-18 07:39:00,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2343 states, 2342 states have (on average 4.122544833475662) internal successors, (9655), 2342 states have internal predecessors, (9655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:00,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 9655 transitions. [2022-01-18 07:39:00,633 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 9655 transitions. Word has length 23 [2022-01-18 07:39:00,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:00,633 INFO L470 AbstractCegarLoop]: Abstraction has 2343 states and 9655 transitions. [2022-01-18 07:39:00,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.25) internal successors, (26), 7 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 07:39:00,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 9655 transitions. [2022-01-18 07:39:00,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:39:00,641 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:00,641 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] [2022-01-18 07:39:00,668 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 07:39:00,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:00,868 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:00,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:00,869 INFO L85 PathProgramCache]: Analyzing trace with hash 33636326, now seen corresponding path program 1 times [2022-01-18 07:39:00,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:00,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137404247] [2022-01-18 07:39:00,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:00,869 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:00,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:00,899 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 07:39:00,899 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:00,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137404247] [2022-01-18 07:39:00,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137404247] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:39:00,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:39:00,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 07:39:00,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080065260] [2022-01-18 07:39:00,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:39:00,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:39:00,900 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:00,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:39:00,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:39:00,901 INFO L87 Difference]: Start difference. First operand 2343 states and 9655 transitions. Second operand has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:00,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:00,972 INFO L93 Difference]: Finished difference Result 2180 states and 8842 transitions. [2022-01-18 07:39:00,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:39:00,973 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:39:00,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:00,980 INFO L225 Difference]: With dead ends: 2180 [2022-01-18 07:39:00,981 INFO L226 Difference]: Without dead ends: 2137 [2022-01-18 07:39:00,981 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:39:00,981 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 35 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:00,982 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 24 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:00,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2137 states. [2022-01-18 07:39:01,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2137 to 1749. [2022-01-18 07:39:01,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1748 states have (on average 4.060640732265446) internal successors, (7098), 1748 states have internal predecessors, (7098), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 7098 transitions. [2022-01-18 07:39:01,028 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 7098 transitions. Word has length 23 [2022-01-18 07:39:01,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:01,028 INFO L470 AbstractCegarLoop]: Abstraction has 1749 states and 7098 transitions. [2022-01-18 07:39:01,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.6) internal successors, (23), 4 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,029 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 7098 transitions. [2022-01-18 07:39:01,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:39:01,033 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:01,033 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] [2022-01-18 07:39:01,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-01-18 07:39:01,034 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:01,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:01,034 INFO L85 PathProgramCache]: Analyzing trace with hash -25922294, now seen corresponding path program 2 times [2022-01-18 07:39:01,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:01,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387345019] [2022-01-18 07:39:01,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:01,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:01,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:01,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:01,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387345019] [2022-01-18 07:39:01,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387345019] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:01,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999577870] [2022-01-18 07:39:01,056 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:01,056 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:01,057 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:01,058 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 07:39:01,065 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 07:39:01,092 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:01,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:01,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:39:01,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:01,155 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:01,156 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:01,251 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:01,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999577870] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:01,251 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:01,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-01-18 07:39:01,251 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935359140] [2022-01-18 07:39:01,251 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:01,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:39:01,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:01,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:39:01,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:39:01,252 INFO L87 Difference]: Start difference. First operand 1749 states and 7098 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:01,550 INFO L93 Difference]: Finished difference Result 4870 states and 18610 transitions. [2022-01-18 07:39:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 07:39:01,550 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:39:01,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:01,569 INFO L225 Difference]: With dead ends: 4870 [2022-01-18 07:39:01,569 INFO L226 Difference]: Without dead ends: 4870 [2022-01-18 07:39:01,569 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:39:01,570 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 242 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:01,570 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [242 Valid, 101 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:01,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4870 states. [2022-01-18 07:39:01,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4870 to 2341. [2022-01-18 07:39:01,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2341 states, 2340 states have (on average 4.21025641025641) internal successors, (9852), 2340 states have internal predecessors, (9852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2341 states to 2341 states and 9852 transitions. [2022-01-18 07:39:01,660 INFO L78 Accepts]: Start accepts. Automaton has 2341 states and 9852 transitions. Word has length 23 [2022-01-18 07:39:01,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:01,660 INFO L470 AbstractCegarLoop]: Abstraction has 2341 states and 9852 transitions. [2022-01-18 07:39:01,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:01,661 INFO L276 IsEmpty]: Start isEmpty. Operand 2341 states and 9852 transitions. [2022-01-18 07:39:01,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:39:01,667 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:01,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:39:01,691 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 07:39:01,891 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 07:39:01,892 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:01,892 INFO L85 PathProgramCache]: Analyzing trace with hash -1475647550, now seen corresponding path program 3 times [2022-01-18 07:39:01,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:01,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285437098] [2022-01-18 07:39:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:01,893 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:01,922 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:01,922 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:01,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285437098] [2022-01-18 07:39:01,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285437098] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:01,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547010250] [2022-01-18 07:39:01,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:01,923 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:01,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:01,924 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 07:39:01,947 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 07:39:01,965 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:39:01,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:01,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:39:01,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:02,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:02,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:02,114 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:02,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547010250] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:02,115 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:02,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-01-18 07:39:02,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563204173] [2022-01-18 07:39:02,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:02,115 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:39:02,115 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:02,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:39:02,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:39:02,116 INFO L87 Difference]: Start difference. First operand 2341 states and 9852 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:02,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:02,443 INFO L93 Difference]: Finished difference Result 4654 states and 18685 transitions. [2022-01-18 07:39:02,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 07:39:02,443 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:39:02,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:02,462 INFO L225 Difference]: With dead ends: 4654 [2022-01-18 07:39:02,462 INFO L226 Difference]: Without dead ends: 4654 [2022-01-18 07:39:02,464 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=208, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:39:02,464 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 266 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:02,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [266 Valid, 62 Invalid, 358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:02,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4654 states. [2022-01-18 07:39:02,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4654 to 2562. [2022-01-18 07:39:02,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2562 states, 2561 states have (on average 4.310035142522453) internal successors, (11038), 2561 states have internal predecessors, (11038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:02,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2562 states to 2562 states and 11038 transitions. [2022-01-18 07:39:02,560 INFO L78 Accepts]: Start accepts. Automaton has 2562 states and 11038 transitions. Word has length 23 [2022-01-18 07:39:02,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:02,561 INFO L470 AbstractCegarLoop]: Abstraction has 2562 states and 11038 transitions. [2022-01-18 07:39:02,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 10 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:02,561 INFO L276 IsEmpty]: Start isEmpty. Operand 2562 states and 11038 transitions. [2022-01-18 07:39:02,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:39:02,568 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:02,568 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] [2022-01-18 07:39:02,594 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 07:39:02,791 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 07:39:02,791 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash 970212618, now seen corresponding path program 2 times [2022-01-18 07:39:02,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:02,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872067571] [2022-01-18 07:39:02,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:02,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:02,827 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:02,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:02,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872067571] [2022-01-18 07:39:02,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872067571] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:02,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117283192] [2022-01-18 07:39:02,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:02,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:02,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:02,829 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 07:39:02,830 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 07:39:02,855 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:02,855 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:02,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:39:02,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:02,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:03,018 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:03,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117283192] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:03,018 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:03,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 8 [2022-01-18 07:39:03,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991631219] [2022-01-18 07:39:03,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:03,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 07:39:03,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:03,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 07:39:03,019 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-01-18 07:39:03,019 INFO L87 Difference]: Start difference. First operand 2562 states and 11038 transitions. Second operand has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:03,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:03,228 INFO L93 Difference]: Finished difference Result 4928 states and 20191 transitions. [2022-01-18 07:39:03,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:39:03,228 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:39:03,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:03,246 INFO L225 Difference]: With dead ends: 4928 [2022-01-18 07:39:03,247 INFO L226 Difference]: Without dead ends: 4928 [2022-01-18 07:39:03,247 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:39:03,247 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 113 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 201 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:03,248 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 87 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 201 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:03,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4928 states. [2022-01-18 07:39:03,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4928 to 2970. [2022-01-18 07:39:03,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2970 states, 2969 states have (on average 4.287638935668575) internal successors, (12730), 2969 states have internal predecessors, (12730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:03,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2970 states to 2970 states and 12730 transitions. [2022-01-18 07:39:03,337 INFO L78 Accepts]: Start accepts. Automaton has 2970 states and 12730 transitions. Word has length 23 [2022-01-18 07:39:03,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:03,338 INFO L470 AbstractCegarLoop]: Abstraction has 2970 states and 12730 transitions. [2022-01-18 07:39:03,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.666666666666667) internal successors, (42), 8 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:03,338 INFO L276 IsEmpty]: Start isEmpty. Operand 2970 states and 12730 transitions. [2022-01-18 07:39:03,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:39:03,346 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:03,346 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] [2022-01-18 07:39:03,375 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 07:39:03,568 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 07:39:03,568 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:03,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:03,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1118399754, now seen corresponding path program 3 times [2022-01-18 07:39:03,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:03,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833961523] [2022-01-18 07:39:03,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:03,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:03,589 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833961523] [2022-01-18 07:39:03,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833961523] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:03,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987141809] [2022-01-18 07:39:03,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:03,590 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:03,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:03,591 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 07:39:03,592 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 07:39:03,618 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:39:03,618 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:03,618 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:39:03,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:03,678 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:03,678 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:03,774 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:03,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987141809] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:03,775 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:03,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-01-18 07:39:03,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042656386] [2022-01-18 07:39:03,775 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:03,776 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:39:03,776 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:03,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:39:03,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:39:03,776 INFO L87 Difference]: Start difference. First operand 2970 states and 12730 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:04,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:04,102 INFO L93 Difference]: Finished difference Result 7558 states and 30662 transitions. [2022-01-18 07:39:04,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-01-18 07:39:04,103 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:39:04,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:04,130 INFO L225 Difference]: With dead ends: 7558 [2022-01-18 07:39:04,130 INFO L226 Difference]: Without dead ends: 7558 [2022-01-18 07:39:04,131 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=101, Invalid=171, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:39:04,131 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 187 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 187 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:04,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [187 Valid, 120 Invalid, 397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 333 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:04,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7558 states. [2022-01-18 07:39:04,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7558 to 4354. [2022-01-18 07:39:04,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4354 states, 4353 states have (on average 4.402940500804043) internal successors, (19166), 4353 states have internal predecessors, (19166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:04,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4354 states to 4354 states and 19166 transitions. [2022-01-18 07:39:04,320 INFO L78 Accepts]: Start accepts. Automaton has 4354 states and 19166 transitions. Word has length 23 [2022-01-18 07:39:04,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:04,320 INFO L470 AbstractCegarLoop]: Abstraction has 4354 states and 19166 transitions. [2022-01-18 07:39:04,320 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:04,320 INFO L276 IsEmpty]: Start isEmpty. Operand 4354 states and 19166 transitions. [2022-01-18 07:39:04,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-01-18 07:39:04,333 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:04,333 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] [2022-01-18 07:39:04,356 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 07:39:04,553 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 07:39:04,554 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:04,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:04,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1188293318, now seen corresponding path program 4 times [2022-01-18 07:39:04,554 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:04,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760791570] [2022-01-18 07:39:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:04,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:04,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:04,576 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:04,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760791570] [2022-01-18 07:39:04,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760791570] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:04,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462747233] [2022-01-18 07:39:04,576 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:04,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:04,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:04,578 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 07:39:04,579 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 07:39:04,604 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:04,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:04,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:39:04,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:04,676 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:04,676 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:04,781 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:04,781 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462747233] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:04,781 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:04,781 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 10 [2022-01-18 07:39:04,781 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267983761] [2022-01-18 07:39:04,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:04,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:39:04,782 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:04,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:39:04,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:39:04,782 INFO L87 Difference]: Start difference. First operand 4354 states and 19166 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:05,127 INFO L93 Difference]: Finished difference Result 7822 states and 32925 transitions. [2022-01-18 07:39:05,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-01-18 07:39:05,131 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2022-01-18 07:39:05,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:05,162 INFO L225 Difference]: With dead ends: 7822 [2022-01-18 07:39:05,162 INFO L226 Difference]: Without dead ends: 7822 [2022-01-18 07:39:05,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=134, Invalid=208, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:39:05,163 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 184 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:05,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [184 Valid, 77 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:05,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7822 states. [2022-01-18 07:39:05,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7822 to 4648. [2022-01-18 07:39:05,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4648 states, 4647 states have (on average 4.46460081773187) internal successors, (20747), 4647 states have internal predecessors, (20747), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:05,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4648 states to 4648 states and 20747 transitions. [2022-01-18 07:39:05,333 INFO L78 Accepts]: Start accepts. Automaton has 4648 states and 20747 transitions. Word has length 23 [2022-01-18 07:39:05,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:05,334 INFO L470 AbstractCegarLoop]: Abstraction has 4648 states and 20747 transitions. [2022-01-18 07:39:05,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:05,334 INFO L276 IsEmpty]: Start isEmpty. Operand 4648 states and 20747 transitions. [2022-01-18 07:39:05,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:05,347 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:05,347 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] [2022-01-18 07:39:05,373 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 07:39:05,571 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 07:39:05,571 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:05,571 INFO L85 PathProgramCache]: Analyzing trace with hash -1541563518, now seen corresponding path program 4 times [2022-01-18 07:39:05,572 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:05,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198657862] [2022-01-18 07:39:05,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:05,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:05,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:05,651 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:05,651 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198657862] [2022-01-18 07:39:05,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198657862] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:05,651 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [377473277] [2022-01-18 07:39:05,651 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:05,652 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:05,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:05,656 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 07:39:05,671 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 07:39:05,693 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:05,693 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:05,693 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:05,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:05,772 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:05,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:05,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:05,952 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [377473277] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:05,952 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 07:39:05,952 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 14 [2022-01-18 07:39:05,952 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232270615] [2022-01-18 07:39:05,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:39:05,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 07:39:05,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:05,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 07:39:05,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:05,955 INFO L87 Difference]: Start difference. First operand 4648 states and 20747 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:06,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:06,147 INFO L93 Difference]: Finished difference Result 7073 states and 30775 transitions. [2022-01-18 07:39:06,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 07:39:06,151 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:06,173 INFO L225 Difference]: With dead ends: 7073 [2022-01-18 07:39:06,174 INFO L226 Difference]: Without dead ends: 7073 [2022-01-18 07:39:06,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=81, Invalid=191, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:39:06,174 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 69 mSDsluCounter, 84 mSDsCounter, 0 mSdLazyCounter, 217 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:06,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 59 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 217 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:06,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7073 states. [2022-01-18 07:39:06,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7073 to 4730. [2022-01-18 07:39:06,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4730 states, 4729 states have (on average 4.45760203002749) internal successors, (21080), 4729 states have internal predecessors, (21080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:06,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 21080 transitions. [2022-01-18 07:39:06,323 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 21080 transitions. Word has length 25 [2022-01-18 07:39:06,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:06,323 INFO L470 AbstractCegarLoop]: Abstraction has 4730 states and 21080 transitions. [2022-01-18 07:39:06,324 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:06,324 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 21080 transitions. [2022-01-18 07:39:06,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:06,337 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:06,337 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] [2022-01-18 07:39:06,367 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 07:39:06,551 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 07:39:06,552 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:06,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:06,552 INFO L85 PathProgramCache]: Analyzing trace with hash -231361658, now seen corresponding path program 4 times [2022-01-18 07:39:06,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:06,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310561138] [2022-01-18 07:39:06,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:06,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:06,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:06,619 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:06,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310561138] [2022-01-18 07:39:06,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310561138] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:06,619 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1566235976] [2022-01-18 07:39:06,619 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:06,619 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:06,620 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 07:39:06,627 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 07:39:06,650 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:06,650 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:39:06,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:06,725 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:06,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:06,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:06,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1566235976] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:06,836 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:06,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 07:39:06,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958795203] [2022-01-18 07:39:06,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:06,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:39:06,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:06,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:39:06,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:39:06,837 INFO L87 Difference]: Start difference. First operand 4730 states and 21080 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:07,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:07,198 INFO L93 Difference]: Finished difference Result 6959 states and 29620 transitions. [2022-01-18 07:39:07,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:39:07,199 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:07,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:07,218 INFO L225 Difference]: With dead ends: 6959 [2022-01-18 07:39:07,218 INFO L226 Difference]: Without dead ends: 6862 [2022-01-18 07:39:07,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 39 SyntacticMatches, 9 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:39:07,219 INFO L933 BasicCegarLoop]: 80 mSDtfsCounter, 116 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 535 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 535 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:07,219 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 384 Invalid, 547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 535 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:07,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6862 states. [2022-01-18 07:39:07,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6862 to 5203. [2022-01-18 07:39:07,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5203 states, 5202 states have (on average 4.448289119569396) internal successors, (23140), 5202 states have internal predecessors, (23140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:07,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5203 states to 5203 states and 23140 transitions. [2022-01-18 07:39:07,431 INFO L78 Accepts]: Start accepts. Automaton has 5203 states and 23140 transitions. Word has length 25 [2022-01-18 07:39:07,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:07,433 INFO L470 AbstractCegarLoop]: Abstraction has 5203 states and 23140 transitions. [2022-01-18 07:39:07,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:07,433 INFO L276 IsEmpty]: Start isEmpty. Operand 5203 states and 23140 transitions. [2022-01-18 07:39:07,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:07,449 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:07,449 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] [2022-01-18 07:39:07,475 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 07:39:07,663 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 07:39:07,663 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:07,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:07,663 INFO L85 PathProgramCache]: Analyzing trace with hash 867759110, now seen corresponding path program 1 times [2022-01-18 07:39:07,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:07,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093890835] [2022-01-18 07:39:07,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:07,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:07,699 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:07,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:07,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093890835] [2022-01-18 07:39:07,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093890835] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:07,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185464676] [2022-01-18 07:39:07,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:07,700 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:07,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:07,701 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 07:39:07,704 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 07:39:07,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:07,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:07,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:07,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:07,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:07,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [185464676] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:07,956 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:07,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2022-01-18 07:39:07,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497334547] [2022-01-18 07:39:07,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:07,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:39:07,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:39:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:39:07,959 INFO L87 Difference]: Start difference. First operand 5203 states and 23140 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:08,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:08,845 INFO L93 Difference]: Finished difference Result 16617 states and 68830 transitions. [2022-01-18 07:39:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 07:39:08,845 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:08,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:08,920 INFO L225 Difference]: With dead ends: 16617 [2022-01-18 07:39:08,921 INFO L226 Difference]: Without dead ends: 16551 [2022-01-18 07:39:08,921 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=442, Invalid=890, Unknown=0, NotChecked=0, Total=1332 [2022-01-18 07:39:08,922 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 487 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 487 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:08,922 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [487 Valid, 179 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:39:08,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16551 states. [2022-01-18 07:39:09,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16551 to 7204. [2022-01-18 07:39:09,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7204 states, 7203 states have (on average 4.527974455088158) internal successors, (32615), 7203 states have internal predecessors, (32615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:09,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7204 states to 7204 states and 32615 transitions. [2022-01-18 07:39:09,269 INFO L78 Accepts]: Start accepts. Automaton has 7204 states and 32615 transitions. Word has length 25 [2022-01-18 07:39:09,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:09,269 INFO L470 AbstractCegarLoop]: Abstraction has 7204 states and 32615 transitions. [2022-01-18 07:39:09,269 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:09,269 INFO L276 IsEmpty]: Start isEmpty. Operand 7204 states and 32615 transitions. [2022-01-18 07:39:09,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:09,291 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:09,291 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] [2022-01-18 07:39:09,309 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 07:39:09,492 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 07:39:09,493 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:09,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:09,493 INFO L85 PathProgramCache]: Analyzing trace with hash 937652674, now seen corresponding path program 2 times [2022-01-18 07:39:09,493 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:09,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333966554] [2022-01-18 07:39:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:09,493 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:09,529 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:09,529 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:09,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333966554] [2022-01-18 07:39:09,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333966554] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:09,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [534740297] [2022-01-18 07:39:09,530 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:09,530 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:09,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:09,531 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 07:39:09,543 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 07:39:09,567 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:09,568 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:09,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:09,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:09,674 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:09,674 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:09,807 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:09,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [534740297] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:09,808 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:09,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2022-01-18 07:39:09,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797444656] [2022-01-18 07:39:09,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:09,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:39:09,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:09,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:39:09,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:39:09,809 INFO L87 Difference]: Start difference. First operand 7204 states and 32615 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:10,715 INFO L93 Difference]: Finished difference Result 15330 states and 66058 transitions. [2022-01-18 07:39:10,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 07:39:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:10,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:10,780 INFO L225 Difference]: With dead ends: 15330 [2022-01-18 07:39:10,781 INFO L226 Difference]: Without dead ends: 15330 [2022-01-18 07:39:10,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=505, Invalid=977, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 07:39:10,782 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 542 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 645 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 542 SdHoareTripleChecker+Valid, 143 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 645 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:10,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [542 Valid, 143 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 645 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:39:10,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15330 states. [2022-01-18 07:39:11,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15330 to 9308. [2022-01-18 07:39:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9308 states, 9307 states have (on average 4.566562802191899) internal successors, (42501), 9307 states have internal predecessors, (42501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:11,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9308 states to 9308 states and 42501 transitions. [2022-01-18 07:39:11,104 INFO L78 Accepts]: Start accepts. Automaton has 9308 states and 42501 transitions. Word has length 25 [2022-01-18 07:39:11,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:11,104 INFO L470 AbstractCegarLoop]: Abstraction has 9308 states and 42501 transitions. [2022-01-18 07:39:11,104 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:11,104 INFO L276 IsEmpty]: Start isEmpty. Operand 9308 states and 42501 transitions. [2022-01-18 07:39:11,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:11,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:11,127 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] [2022-01-18 07:39:11,143 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-01-18 07:39:11,331 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 07:39:11,331 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:11,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:11,332 INFO L85 PathProgramCache]: Analyzing trace with hash 599012682, now seen corresponding path program 3 times [2022-01-18 07:39:11,332 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:11,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022453316] [2022-01-18 07:39:11,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:11,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:11,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:11,392 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:11,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:11,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022453316] [2022-01-18 07:39:11,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1022453316] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:11,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926290425] [2022-01-18 07:39:11,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:11,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:11,393 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:11,394 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 07:39:11,395 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 07:39:11,416 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:39:11,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:11,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:39:11,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:11,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:11,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:11,782 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:11,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [926290425] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:11,783 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:11,783 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:39:11,783 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179022022] [2022-01-18 07:39:11,783 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:11,783 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:39:11,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:11,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:39:11,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:39:11,784 INFO L87 Difference]: Start difference. First operand 9308 states and 42501 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 07:39:13,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:13,436 INFO L93 Difference]: Finished difference Result 43349 states and 187926 transitions. [2022-01-18 07:39:13,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-01-18 07:39:13,436 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 25 [2022-01-18 07:39:13,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:13,778 INFO L225 Difference]: With dead ends: 43349 [2022-01-18 07:39:13,778 INFO L226 Difference]: Without dead ends: 43226 [2022-01-18 07:39:13,779 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1467 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=1109, Invalid=2673, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 07:39:13,779 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 890 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 677 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 1004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:13,780 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [890 Valid, 196 Invalid, 1004 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 677 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:39:13,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43226 states. [2022-01-18 07:39:14,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43226 to 18163. [2022-01-18 07:39:14,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18163 states, 18162 states have (on average 4.662482105494989) internal successors, (84680), 18162 states have internal predecessors, (84680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18163 states to 18163 states and 84680 transitions. [2022-01-18 07:39:14,851 INFO L78 Accepts]: Start accepts. Automaton has 18163 states and 84680 transitions. Word has length 25 [2022-01-18 07:39:14,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:14,851 INFO L470 AbstractCegarLoop]: Abstraction has 18163 states and 84680 transitions. [2022-01-18 07:39:14,851 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 07:39:14,851 INFO L276 IsEmpty]: Start isEmpty. Operand 18163 states and 84680 transitions. [2022-01-18 07:39:15,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:15,007 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:15,007 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] [2022-01-18 07:39:15,024 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 07:39:15,211 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 07:39:15,211 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash 816040672, now seen corresponding path program 4 times [2022-01-18 07:39:15,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:15,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064767182] [2022-01-18 07:39:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:15,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:15,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:15,271 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:15,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064767182] [2022-01-18 07:39:15,271 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064767182] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:15,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [145569011] [2022-01-18 07:39:15,271 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:15,271 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:15,272 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:15,273 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 07:39:15,285 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 07:39:15,305 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:15,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:15,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:39:15,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:15,413 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:15,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:15,687 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:15,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [145569011] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:15,687 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:15,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:39:15,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225210785] [2022-01-18 07:39:15,688 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:15,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:39:15,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:15,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:39:15,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:39:15,689 INFO L87 Difference]: Start difference. First operand 18163 states and 84680 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) 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 07:39:17,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:17,533 INFO L93 Difference]: Finished difference Result 42110 states and 182030 transitions. [2022-01-18 07:39:17,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-01-18 07:39:17,534 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) 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 25 [2022-01-18 07:39:17,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:17,724 INFO L225 Difference]: With dead ends: 42110 [2022-01-18 07:39:17,724 INFO L226 Difference]: Without dead ends: 41954 [2022-01-18 07:39:17,725 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1036, Invalid=2746, Unknown=0, NotChecked=0, Total=3782 [2022-01-18 07:39:17,725 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 701 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 860 mSolverCounterSat, 303 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 273 SdHoareTripleChecker+Invalid, 1163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 303 IncrementalHoareTripleChecker+Valid, 860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:17,725 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [701 Valid, 273 Invalid, 1163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [303 Valid, 860 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:39:17,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41954 states. [2022-01-18 07:39:18,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41954 to 19283. [2022-01-18 07:39:18,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19283 states, 19282 states have (on average 4.627476402862774) internal successors, (89227), 19282 states have internal predecessors, (89227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:18,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19283 states to 19283 states and 89227 transitions. [2022-01-18 07:39:18,827 INFO L78 Accepts]: Start accepts. Automaton has 19283 states and 89227 transitions. Word has length 25 [2022-01-18 07:39:18,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:18,827 INFO L470 AbstractCegarLoop]: Abstraction has 19283 states and 89227 transitions. [2022-01-18 07:39:18,827 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) 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 07:39:18,827 INFO L276 IsEmpty]: Start isEmpty. Operand 19283 states and 89227 transitions. [2022-01-18 07:39:18,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:18,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:18,895 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] [2022-01-18 07:39:18,910 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 07:39:19,095 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 07:39:19,096 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:19,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:19,096 INFO L85 PathProgramCache]: Analyzing trace with hash -249609790, now seen corresponding path program 5 times [2022-01-18 07:39:19,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:19,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313142769] [2022-01-18 07:39:19,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:19,096 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:19,176 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:19,177 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313142769] [2022-01-18 07:39:19,177 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313142769] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:19,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738503109] [2022-01-18 07:39:19,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:39:19,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:19,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:19,178 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 07:39:19,211 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 07:39:19,220 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:19,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:19,221 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:39:19,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:19,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:19,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:19,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738503109] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:19,931 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:19,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:39:19,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780876203] [2022-01-18 07:39:19,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:19,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:39:19,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:19,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:39:19,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:39:19,933 INFO L87 Difference]: Start difference. First operand 19283 states and 89227 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:21,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:21,676 INFO L93 Difference]: Finished difference Result 40327 states and 177681 transitions. [2022-01-18 07:39:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-01-18 07:39:21,677 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:21,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:21,864 INFO L225 Difference]: With dead ends: 40327 [2022-01-18 07:39:21,864 INFO L226 Difference]: Without dead ends: 40123 [2022-01-18 07:39:21,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 505 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=498, Invalid=1224, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 07:39:21,865 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 392 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 908 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 225 SdHoareTripleChecker+Invalid, 1011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 908 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:21,865 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [392 Valid, 225 Invalid, 1011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 908 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:39:21,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40123 states. [2022-01-18 07:39:22,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40123 to 20179. [2022-01-18 07:39:22,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20179 states, 20178 states have (on average 4.661116067003667) internal successors, (94052), 20178 states have internal predecessors, (94052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:23,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20179 states to 20179 states and 94052 transitions. [2022-01-18 07:39:23,031 INFO L78 Accepts]: Start accepts. Automaton has 20179 states and 94052 transitions. Word has length 25 [2022-01-18 07:39:23,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:23,031 INFO L470 AbstractCegarLoop]: Abstraction has 20179 states and 94052 transitions. [2022-01-18 07:39:23,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 17 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:23,031 INFO L276 IsEmpty]: Start isEmpty. Operand 20179 states and 94052 transitions. [2022-01-18 07:39:23,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:23,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:23,091 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] [2022-01-18 07:39:23,115 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 07:39:23,304 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 07:39:23,304 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:23,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:23,305 INFO L85 PathProgramCache]: Analyzing trace with hash -629764328, now seen corresponding path program 6 times [2022-01-18 07:39:23,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:23,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267947039] [2022-01-18 07:39:23,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:23,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:23,395 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:23,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267947039] [2022-01-18 07:39:23,395 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267947039] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:23,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314199690] [2022-01-18 07:39:23,395 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:39:23,395 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:23,396 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:23,396 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 07:39:23,424 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 07:39:23,428 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:39:23,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:23,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:39:23,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:23,565 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:23,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:23,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:23,994 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314199690] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:23,994 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:23,994 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:39:23,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486036783] [2022-01-18 07:39:23,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:23,995 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:39:23,995 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:23,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:39:23,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:39:23,996 INFO L87 Difference]: Start difference. First operand 20179 states and 94052 transitions. Second operand has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:26,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:26,288 INFO L93 Difference]: Finished difference Result 39840 states and 175243 transitions. [2022-01-18 07:39:26,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-01-18 07:39:26,288 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:26,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:26,475 INFO L225 Difference]: With dead ends: 39840 [2022-01-18 07:39:26,475 INFO L226 Difference]: Without dead ends: 38961 [2022-01-18 07:39:26,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=604, Invalid=1748, Unknown=0, NotChecked=0, Total=2352 [2022-01-18 07:39:26,476 INFO L933 BasicCegarLoop]: 41 mSDtfsCounter, 423 mSDsluCounter, 572 mSDsCounter, 0 mSdLazyCounter, 1402 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 423 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 1527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1402 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:26,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [423 Valid, 301 Invalid, 1527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1402 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:39:26,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38961 states. [2022-01-18 07:39:27,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38961 to 20002. [2022-01-18 07:39:27,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20002 states, 20001 states have (on average 4.644417779111045) internal successors, (92893), 20001 states have internal predecessors, (92893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:27,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20002 states to 20002 states and 92893 transitions. [2022-01-18 07:39:27,304 INFO L78 Accepts]: Start accepts. Automaton has 20002 states and 92893 transitions. Word has length 25 [2022-01-18 07:39:27,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:27,304 INFO L470 AbstractCegarLoop]: Abstraction has 20002 states and 92893 transitions. [2022-01-18 07:39:27,304 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2777777777777777) internal successors, (59), 17 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:27,305 INFO L276 IsEmpty]: Start isEmpty. Operand 20002 states and 92893 transitions. [2022-01-18 07:39:27,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:27,352 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:27,352 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] [2022-01-18 07:39:27,368 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-01-18 07:39:27,552 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 07:39:27,552 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:27,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:27,553 INFO L85 PathProgramCache]: Analyzing trace with hash 50816006, now seen corresponding path program 7 times [2022-01-18 07:39:27,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:27,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741519772] [2022-01-18 07:39:27,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:27,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:27,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:27,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:27,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741519772] [2022-01-18 07:39:27,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741519772] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:27,615 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492305423] [2022-01-18 07:39:27,615 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:39:27,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:27,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:27,616 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 07:39:27,644 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 07:39:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:27,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:39:27,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:28,032 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:28,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:28,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492305423] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:28,268 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:28,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:39:28,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996998283] [2022-01-18 07:39:28,268 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:28,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:39:28,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:28,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:39:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:39:28,269 INFO L87 Difference]: Start difference. First operand 20002 states and 92893 transitions. Second operand has 19 states, 19 states have (on average 2.789473684210526) 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 07:39:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:29,639 INFO L93 Difference]: Finished difference Result 52489 states and 232133 transitions. [2022-01-18 07:39:29,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-01-18 07:39:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.789473684210526) 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 25 [2022-01-18 07:39:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:29,889 INFO L225 Difference]: With dead ends: 52489 [2022-01-18 07:39:29,889 INFO L226 Difference]: Without dead ends: 52306 [2022-01-18 07:39:29,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 602 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=573, Invalid=1407, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 07:39:29,890 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 663 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 875 mSolverCounterSat, 248 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 663 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 1123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 248 IncrementalHoareTripleChecker+Valid, 875 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:29,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [663 Valid, 283 Invalid, 1123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [248 Valid, 875 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:39:29,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52306 states. [2022-01-18 07:39:31,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52306 to 25506. [2022-01-18 07:39:31,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25506 states, 25505 states have (on average 4.6938639482454425) internal successors, (119717), 25505 states have internal predecessors, (119717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:31,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25506 states to 25506 states and 119717 transitions. [2022-01-18 07:39:31,207 INFO L78 Accepts]: Start accepts. Automaton has 25506 states and 119717 transitions. Word has length 25 [2022-01-18 07:39:31,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:31,207 INFO L470 AbstractCegarLoop]: Abstraction has 25506 states and 119717 transitions. [2022-01-18 07:39:31,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.789473684210526) 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 07:39:31,207 INFO L276 IsEmpty]: Start isEmpty. Operand 25506 states and 119717 transitions. [2022-01-18 07:39:31,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:31,277 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:31,277 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] [2022-01-18 07:39:31,298 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 07:39:31,493 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 07:39:31,493 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:31,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:31,494 INFO L85 PathProgramCache]: Analyzing trace with hash -2095354754, now seen corresponding path program 8 times [2022-01-18 07:39:31,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:31,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616727403] [2022-01-18 07:39:31,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:31,494 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:31,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:31,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:31,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616727403] [2022-01-18 07:39:31,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616727403] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:31,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868102239] [2022-01-18 07:39:31,598 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:31,598 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:31,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:31,599 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 07:39:31,600 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 07:39:31,625 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:31,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:31,626 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:39:31,626 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:31,755 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:32,169 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:32,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868102239] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:32,169 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:32,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2022-01-18 07:39:32,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971466455] [2022-01-18 07:39:32,170 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:32,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:39:32,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:32,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:39:32,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:39:32,170 INFO L87 Difference]: Start difference. First operand 25506 states and 119717 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 07:39:34,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:34,222 INFO L93 Difference]: Finished difference Result 47186 states and 211684 transitions. [2022-01-18 07:39:34,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 07:39:34,223 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 25 [2022-01-18 07:39:34,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:34,421 INFO L225 Difference]: With dead ends: 47186 [2022-01-18 07:39:34,421 INFO L226 Difference]: Without dead ends: 46797 [2022-01-18 07:39:34,421 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=415, Invalid=1391, Unknown=0, NotChecked=0, Total=1806 [2022-01-18 07:39:34,421 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 362 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 1819 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 392 SdHoareTripleChecker+Invalid, 1928 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:34,422 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 392 Invalid, 1928 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1819 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:39:34,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46797 states. [2022-01-18 07:39:35,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46797 to 25503. [2022-01-18 07:39:35,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25503 states, 25502 states have (on average 4.692965257626853) internal successors, (119680), 25502 states have internal predecessors, (119680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:35,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25503 states to 25503 states and 119680 transitions. [2022-01-18 07:39:35,591 INFO L78 Accepts]: Start accepts. Automaton has 25503 states and 119680 transitions. Word has length 25 [2022-01-18 07:39:35,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:35,591 INFO L470 AbstractCegarLoop]: Abstraction has 25503 states and 119680 transitions. [2022-01-18 07:39:35,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 07:39:35,591 INFO L276 IsEmpty]: Start isEmpty. Operand 25503 states and 119680 transitions. [2022-01-18 07:39:35,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:35,669 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:35,669 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] [2022-01-18 07:39:35,685 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 07:39:35,870 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 07:39:35,870 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:35,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:35,870 INFO L85 PathProgramCache]: Analyzing trace with hash 863019782, now seen corresponding path program 1 times [2022-01-18 07:39:35,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:35,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414340819] [2022-01-18 07:39:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:35,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:35,905 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:35,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:35,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414340819] [2022-01-18 07:39:35,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414340819] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:35,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099476915] [2022-01-18 07:39:35,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:35,906 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:35,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:35,907 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 07:39:35,935 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 07:39:35,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:35,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:35,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:36,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:36,008 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:36,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:36,174 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2099476915] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:36,174 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 07:39:36,174 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6] total 14 [2022-01-18 07:39:36,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304375706] [2022-01-18 07:39:36,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:39:36,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 07:39:36,175 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:36,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 07:39:36,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:36,176 INFO L87 Difference]: Start difference. First operand 25503 states and 119680 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:36,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:36,514 INFO L93 Difference]: Finished difference Result 30985 states and 143944 transitions. [2022-01-18 07:39:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 07:39:36,514 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:36,644 INFO L225 Difference]: With dead ends: 30985 [2022-01-18 07:39:36,644 INFO L226 Difference]: Without dead ends: 30967 [2022-01-18 07:39:36,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=100, Invalid=172, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:39:36,645 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 99 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:36,645 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 36 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:36,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30967 states. [2022-01-18 07:39:37,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30967 to 25809. [2022-01-18 07:39:37,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25809 states, 25808 states have (on average 4.691568505889647) internal successors, (121080), 25808 states have internal predecessors, (121080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:37,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25809 states to 25809 states and 121080 transitions. [2022-01-18 07:39:37,778 INFO L78 Accepts]: Start accepts. Automaton has 25809 states and 121080 transitions. Word has length 25 [2022-01-18 07:39:37,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:37,779 INFO L470 AbstractCegarLoop]: Abstraction has 25809 states and 121080 transitions. [2022-01-18 07:39:37,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:37,779 INFO L276 IsEmpty]: Start isEmpty. Operand 25809 states and 121080 transitions. [2022-01-18 07:39:37,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:37,859 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:37,859 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] [2022-01-18 07:39:37,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-01-18 07:39:38,071 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 07:39:38,071 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:38,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:38,072 INFO L85 PathProgramCache]: Analyzing trace with hash 1313753862, now seen corresponding path program 2 times [2022-01-18 07:39:38,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:38,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884654327] [2022-01-18 07:39:38,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:38,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:38,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:38,107 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:38,107 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:38,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884654327] [2022-01-18 07:39:38,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884654327] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:38,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892530936] [2022-01-18 07:39:38,108 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:39:38,109 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:38,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:38,110 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 07:39:38,126 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 07:39:38,137 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:38,138 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:38,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:38,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:38,209 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:38,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:38,345 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:38,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892530936] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:38,346 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:38,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 14 [2022-01-18 07:39:38,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620519826] [2022-01-18 07:39:38,346 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:38,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:39:38,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:38,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:39:38,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:38,347 INFO L87 Difference]: Start difference. First operand 25809 states and 121080 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 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 07:39:39,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:39,010 INFO L93 Difference]: Finished difference Result 42598 states and 191600 transitions. [2022-01-18 07:39:39,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 07:39:39,011 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 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 25 [2022-01-18 07:39:39,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:39,179 INFO L225 Difference]: With dead ends: 42598 [2022-01-18 07:39:39,180 INFO L226 Difference]: Without dead ends: 42549 [2022-01-18 07:39:39,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=223, Invalid=427, Unknown=0, NotChecked=0, Total=650 [2022-01-18 07:39:39,181 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 363 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 523 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 620 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:39,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 149 Invalid, 620 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 523 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:39,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42549 states. [2022-01-18 07:39:40,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42549 to 28164. [2022-01-18 07:39:40,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28164 states, 28163 states have (on average 4.6866455988353515) internal successors, (131990), 28163 states have internal predecessors, (131990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:40,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28164 states to 28164 states and 131990 transitions. [2022-01-18 07:39:40,490 INFO L78 Accepts]: Start accepts. Automaton has 28164 states and 131990 transitions. Word has length 25 [2022-01-18 07:39:40,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:40,490 INFO L470 AbstractCegarLoop]: Abstraction has 28164 states and 131990 transitions. [2022-01-18 07:39:40,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 14 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 07:39:40,490 INFO L276 IsEmpty]: Start isEmpty. Operand 28164 states and 131990 transitions. [2022-01-18 07:39:40,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:40,571 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:40,571 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] [2022-01-18 07:39:40,586 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 07:39:40,771 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 07:39:40,771 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:40,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:40,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1690592450, now seen corresponding path program 3 times [2022-01-18 07:39:40,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:40,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884852557] [2022-01-18 07:39:40,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:40,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:40,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:40,827 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:40,827 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:40,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884852557] [2022-01-18 07:39:40,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884852557] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:40,827 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1128745258] [2022-01-18 07:39:40,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:40,828 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:40,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:40,829 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 07:39:40,860 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 07:39:40,865 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:39:40,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:40,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:40,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:40,935 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:40,935 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 07:39:40,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1128745258] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:39:40,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 07:39:40,936 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 9 [2022-01-18 07:39:40,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231508638] [2022-01-18 07:39:40,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:39:40,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 07:39:40,937 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:40,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 07:39:40,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:39:40,938 INFO L87 Difference]: Start difference. First operand 28164 states and 131990 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:41,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:41,411 INFO L93 Difference]: Finished difference Result 37387 states and 169578 transitions. [2022-01-18 07:39:41,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:39:41,412 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:41,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:41,568 INFO L225 Difference]: With dead ends: 37387 [2022-01-18 07:39:41,568 INFO L226 Difference]: Without dead ends: 37305 [2022-01-18 07:39:41,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:41,569 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 113 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 98 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:41,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 98 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:39:41,612 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37305 states. [2022-01-18 07:39:42,461 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37305 to 28147. [2022-01-18 07:39:42,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28147 states, 28146 states have (on average 4.679457116464151) internal successors, (131708), 28146 states have internal predecessors, (131708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:42,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28147 states to 28147 states and 131708 transitions. [2022-01-18 07:39:42,614 INFO L78 Accepts]: Start accepts. Automaton has 28147 states and 131708 transitions. Word has length 25 [2022-01-18 07:39:42,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:42,614 INFO L470 AbstractCegarLoop]: Abstraction has 28147 states and 131708 transitions. [2022-01-18 07:39:42,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:42,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28147 states and 131708 transitions. [2022-01-18 07:39:42,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:42,956 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:42,956 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] [2022-01-18 07:39:42,972 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 07:39:43,159 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 07:39:43,159 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:43,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:43,160 INFO L85 PathProgramCache]: Analyzing trace with hash -48618236, now seen corresponding path program 5 times [2022-01-18 07:39:43,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:43,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064809529] [2022-01-18 07:39:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:43,160 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:43,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:43,247 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:43,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064809529] [2022-01-18 07:39:43,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064809529] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:43,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [411301734] [2022-01-18 07:39:43,247 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:39:43,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:43,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:43,248 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 07:39:43,249 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 07:39:43,270 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:39:43,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:43,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:39:43,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:43,343 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:43,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:43,451 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:43,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [411301734] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:43,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:43,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 07:39:43,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264060695] [2022-01-18 07:39:43,452 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:43,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:39:43,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:43,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:39:43,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:39:43,452 INFO L87 Difference]: Start difference. First operand 28147 states and 131708 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:43,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:43,934 INFO L93 Difference]: Finished difference Result 30690 states and 141720 transitions. [2022-01-18 07:39:43,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:39:43,934 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:43,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:44,056 INFO L225 Difference]: With dead ends: 30690 [2022-01-18 07:39:44,056 INFO L226 Difference]: Without dead ends: 30593 [2022-01-18 07:39:44,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:39:44,057 INFO L933 BasicCegarLoop]: 67 mSDtfsCounter, 93 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 519 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:44,057 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 268 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 519 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:44,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30593 states. [2022-01-18 07:39:44,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30593 to 28417. [2022-01-18 07:39:44,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28417 states, 28416 states have (on average 4.682819538288288) internal successors, (133067), 28416 states have internal predecessors, (133067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:45,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28417 states to 28417 states and 133067 transitions. [2022-01-18 07:39:45,015 INFO L78 Accepts]: Start accepts. Automaton has 28417 states and 133067 transitions. Word has length 25 [2022-01-18 07:39:45,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:45,015 INFO L470 AbstractCegarLoop]: Abstraction has 28417 states and 133067 transitions. [2022-01-18 07:39:45,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:45,015 INFO L276 IsEmpty]: Start isEmpty. Operand 28417 states and 133067 transitions. [2022-01-18 07:39:45,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:45,093 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:45,093 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] [2022-01-18 07:39:45,109 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 07:39:45,294 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 07:39:45,294 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:45,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:45,294 INFO L85 PathProgramCache]: Analyzing trace with hash 1120396096, now seen corresponding path program 9 times [2022-01-18 07:39:45,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:45,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142228857] [2022-01-18 07:39:45,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:45,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:45,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:45,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:45,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142228857] [2022-01-18 07:39:45,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142228857] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:45,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114053732] [2022-01-18 07:39:45,327 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:39:45,328 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:45,328 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:45,329 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 07:39:45,351 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 07:39:45,360 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:39:45,360 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:45,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:45,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:45,437 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:45,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:45,569 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114053732] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:45,569 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:45,569 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 15 [2022-01-18 07:39:45,569 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007719897] [2022-01-18 07:39:45,569 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:45,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:39:45,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:45,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:39:45,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=156, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:39:45,570 INFO L87 Difference]: Start difference. First operand 28417 states and 133067 transitions. Second operand has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:46,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:46,844 INFO L93 Difference]: Finished difference Result 69496 states and 320413 transitions. [2022-01-18 07:39:46,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-01-18 07:39:46,845 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:46,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:47,201 INFO L225 Difference]: With dead ends: 69496 [2022-01-18 07:39:47,201 INFO L226 Difference]: Without dead ends: 69496 [2022-01-18 07:39:47,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=336, Invalid=656, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:39:47,202 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 238 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:47,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [238 Valid, 111 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:47,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69496 states. [2022-01-18 07:39:48,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69496 to 47698. [2022-01-18 07:39:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47698 states, 47697 states have (on average 4.730402331383525) internal successors, (225626), 47697 states have internal predecessors, (225626), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:49,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47698 states to 47698 states and 225626 transitions. [2022-01-18 07:39:49,143 INFO L78 Accepts]: Start accepts. Automaton has 47698 states and 225626 transitions. Word has length 25 [2022-01-18 07:39:49,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:49,143 INFO L470 AbstractCegarLoop]: Abstraction has 47698 states and 225626 transitions. [2022-01-18 07:39:49,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0625) internal successors, (49), 15 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:49,143 INFO L276 IsEmpty]: Start isEmpty. Operand 47698 states and 225626 transitions. [2022-01-18 07:39:49,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:49,261 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:49,261 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] [2022-01-18 07:39:49,277 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 07:39:49,461 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 07:39:49,461 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:49,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:49,462 INFO L85 PathProgramCache]: Analyzing trace with hash -362078012, now seen corresponding path program 6 times [2022-01-18 07:39:49,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:49,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790669839] [2022-01-18 07:39:49,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:49,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:49,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:49,536 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:49,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790669839] [2022-01-18 07:39:49,536 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790669839] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:49,536 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410971898] [2022-01-18 07:39:49,536 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:39:49,536 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:49,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:49,542 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 07:39:49,542 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 07:39:49,565 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:39:49,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:49,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:39:49,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:49,640 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:49,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:49,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410971898] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:49,805 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:49,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:39:49,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708697501] [2022-01-18 07:39:49,805 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:49,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:39:49,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:49,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:39:49,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:39:49,805 INFO L87 Difference]: Start difference. First operand 47698 states and 225626 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:50,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:50,760 INFO L93 Difference]: Finished difference Result 49499 states and 232603 transitions. [2022-01-18 07:39:50,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:39:50,760 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:50,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:51,005 INFO L225 Difference]: With dead ends: 49499 [2022-01-18 07:39:51,006 INFO L226 Difference]: Without dead ends: 49305 [2022-01-18 07:39:51,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:51,006 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 110 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:51,006 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 212 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:51,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49305 states. [2022-01-18 07:39:52,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49305 to 47824. [2022-01-18 07:39:52,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47824 states, 47823 states have (on average 4.73075716705351) internal successors, (226239), 47823 states have internal predecessors, (226239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:52,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47824 states to 47824 states and 226239 transitions. [2022-01-18 07:39:52,593 INFO L78 Accepts]: Start accepts. Automaton has 47824 states and 226239 transitions. Word has length 25 [2022-01-18 07:39:52,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:52,594 INFO L470 AbstractCegarLoop]: Abstraction has 47824 states and 226239 transitions. [2022-01-18 07:39:52,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:52,594 INFO L276 IsEmpty]: Start isEmpty. Operand 47824 states and 226239 transitions. [2022-01-18 07:39:52,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:52,733 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:52,733 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] [2022-01-18 07:39:52,749 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 07:39:52,934 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 07:39:52,934 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:52,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:52,935 INFO L85 PathProgramCache]: Analyzing trace with hash 994663360, now seen corresponding path program 7 times [2022-01-18 07:39:52,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:52,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308366393] [2022-01-18 07:39:52,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:52,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:53,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:53,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308366393] [2022-01-18 07:39:53,022 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308366393] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:53,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756649424] [2022-01-18 07:39:53,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:39:53,023 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:53,023 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:53,032 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 07:39:53,032 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 07:39:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:53,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:39:53,055 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:53,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:53,494 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:53,714 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:39:53,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756649424] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:53,715 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:53,715 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:39:53,715 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353703623] [2022-01-18 07:39:53,715 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:53,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:39:53,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:53,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:39:53,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:39:53,716 INFO L87 Difference]: Start difference. First operand 47824 states and 226239 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:54,277 INFO L93 Difference]: Finished difference Result 49199 states and 231557 transitions. [2022-01-18 07:39:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:39:54,277 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:54,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:54,474 INFO L225 Difference]: With dead ends: 49199 [2022-01-18 07:39:54,474 INFO L226 Difference]: Without dead ends: 49026 [2022-01-18 07:39:54,474 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:39:54,475 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 80 mSDsluCounter, 255 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:54,475 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 207 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:39:54,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49026 states. [2022-01-18 07:39:55,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49026 to 47970. [2022-01-18 07:39:55,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47970 states, 47969 states have (on average 4.731534949654986) internal successors, (226967), 47969 states have internal predecessors, (226967), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:56,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47970 states to 47970 states and 226967 transitions. [2022-01-18 07:39:56,334 INFO L78 Accepts]: Start accepts. Automaton has 47970 states and 226967 transitions. Word has length 25 [2022-01-18 07:39:56,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:39:56,335 INFO L470 AbstractCegarLoop]: Abstraction has 47970 states and 226967 transitions. [2022-01-18 07:39:56,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:56,335 INFO L276 IsEmpty]: Start isEmpty. Operand 47970 states and 226967 transitions. [2022-01-18 07:39:56,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:39:56,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:39:56,464 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] [2022-01-18 07:39:56,479 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 07:39:56,664 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 07:39:56,665 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:39:56,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:39:56,665 INFO L85 PathProgramCache]: Analyzing trace with hash -417418548, now seen corresponding path program 10 times [2022-01-18 07:39:56,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:39:56,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416678280] [2022-01-18 07:39:56,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:39:56,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:39:56,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:39:56,701 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:56,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:39:56,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416678280] [2022-01-18 07:39:56,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416678280] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:39:56,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343833183] [2022-01-18 07:39:56,701 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:39:56,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:39:56,701 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:39:56,702 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 07:39:56,703 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 07:39:56,723 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:39:56,723 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:39:56,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:39:56,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:39:56,791 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:56,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:39:56,919 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:39:56,920 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1343833183] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:39:56,920 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:39:56,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2022-01-18 07:39:56,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447377162] [2022-01-18 07:39:56,922 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:39:56,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:39:56,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:39:56,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:39:56,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:39:56,924 INFO L87 Difference]: Start difference. First operand 47970 states and 226967 transitions. Second operand has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:39:58,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:39:58,633 INFO L93 Difference]: Finished difference Result 108096 states and 492688 transitions. [2022-01-18 07:39:58,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 07:39:58,633 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:39:58,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:39:59,270 INFO L225 Difference]: With dead ends: 108096 [2022-01-18 07:39:59,271 INFO L226 Difference]: Without dead ends: 107887 [2022-01-18 07:39:59,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=677, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:39:59,271 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 290 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:39:59,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 234 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:39:59,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107887 states. [2022-01-18 07:40:02,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107887 to 93158. [2022-01-18 07:40:02,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93158 states, 93157 states have (on average 4.627596423242483) internal successors, (431093), 93157 states have internal predecessors, (431093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:03,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93158 states to 93158 states and 431093 transitions. [2022-01-18 07:40:03,170 INFO L78 Accepts]: Start accepts. Automaton has 93158 states and 431093 transitions. Word has length 25 [2022-01-18 07:40:03,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:03,171 INFO L470 AbstractCegarLoop]: Abstraction has 93158 states and 431093 transitions. [2022-01-18 07:40:03,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 2.933333333333333) internal successors, (44), 14 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:03,171 INFO L276 IsEmpty]: Start isEmpty. Operand 93158 states and 431093 transitions. [2022-01-18 07:40:03,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:40:03,413 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:03,413 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] [2022-01-18 07:40:03,428 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 07:40:03,613 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 07:40:03,614 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:40:03,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:03,614 INFO L85 PathProgramCache]: Analyzing trace with hash -823215352, now seen corresponding path program 11 times [2022-01-18 07:40:03,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:03,614 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023797100] [2022-01-18 07:40:03,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:03,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:03,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:03,665 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:03,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:03,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023797100] [2022-01-18 07:40:03,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023797100] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:03,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090371784] [2022-01-18 07:40:03,666 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:40:03,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:03,666 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:03,667 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 07:40:03,667 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 07:40:03,688 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:40:03,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:03,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:40:03,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:03,830 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:04,077 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:04,078 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090371784] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:04,078 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:04,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:40:04,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289001172] [2022-01-18 07:40:04,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:04,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:40:04,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:04,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:40:04,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:40:04,079 INFO L87 Difference]: Start difference. First operand 93158 states and 431093 transitions. Second operand has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:08,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:08,864 INFO L93 Difference]: Finished difference Result 262758 states and 1182106 transitions. [2022-01-18 07:40:08,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-01-18 07:40:08,865 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:40:08,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:11,133 INFO L225 Difference]: With dead ends: 262758 [2022-01-18 07:40:11,133 INFO L226 Difference]: Without dead ends: 262524 [2022-01-18 07:40:11,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 34 SyntacticMatches, 5 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1667 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1397, Invalid=3159, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 07:40:11,134 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 573 mSDsluCounter, 634 mSDsCounter, 0 mSdLazyCounter, 1104 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 573 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 1323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 1104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:11,134 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [573 Valid, 338 Invalid, 1323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 1104 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:40:11,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262524 states. [2022-01-18 07:40:18,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262524 to 153519. [2022-01-18 07:40:18,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153519 states, 153518 states have (on average 4.58576193019711) internal successors, (703997), 153518 states have internal predecessors, (703997), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:20,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153519 states to 153519 states and 703997 transitions. [2022-01-18 07:40:20,370 INFO L78 Accepts]: Start accepts. Automaton has 153519 states and 703997 transitions. Word has length 25 [2022-01-18 07:40:20,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:20,370 INFO L470 AbstractCegarLoop]: Abstraction has 153519 states and 703997 transitions. [2022-01-18 07:40:20,370 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.5789473684210527) internal successors, (49), 18 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:20,370 INFO L276 IsEmpty]: Start isEmpty. Operand 153519 states and 703997 transitions. [2022-01-18 07:40:20,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:40:20,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:20,756 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] [2022-01-18 07:40:20,772 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 07:40:20,957 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 07:40:20,957 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:40:20,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:20,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1589133496, now seen corresponding path program 12 times [2022-01-18 07:40:20,958 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:20,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54213552] [2022-01-18 07:40:20,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:20,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:21,018 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:21,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:21,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54213552] [2022-01-18 07:40:21,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54213552] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:21,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [851114393] [2022-01-18 07:40:21,018 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:40:21,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:21,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:21,019 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 07:40:21,020 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 07:40:21,044 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 07:40:21,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:40:21,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:40:21,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:21,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:21,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:21,383 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:21,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [851114393] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:21,383 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:21,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:40:21,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230781680] [2022-01-18 07:40:21,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:21,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:40:21,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:21,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:40:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:40:21,384 INFO L87 Difference]: Start difference. First operand 153519 states and 703997 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 07:40:26,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:26,582 INFO L93 Difference]: Finished difference Result 330266 states and 1479418 transitions. [2022-01-18 07:40:26,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2022-01-18 07:40:26,584 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 25 [2022-01-18 07:40:26,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:29,510 INFO L225 Difference]: With dead ends: 330266 [2022-01-18 07:40:29,511 INFO L226 Difference]: Without dead ends: 330266 [2022-01-18 07:40:29,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 35 SyntacticMatches, 4 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1698 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1342, Invalid=3214, Unknown=0, NotChecked=0, Total=4556 [2022-01-18 07:40:29,512 INFO L933 BasicCegarLoop]: 37 mSDtfsCounter, 747 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 946 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 747 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 946 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:29,512 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [747 Valid, 314 Invalid, 1200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 946 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:40:29,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330266 states. [2022-01-18 07:40:39,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330266 to 199056. [2022-01-18 07:40:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199056 states, 199055 states have (on average 4.607776745120695) internal successors, (917201), 199055 states have internal predecessors, (917201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:40:41,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199056 states to 199056 states and 917201 transitions. [2022-01-18 07:40:41,614 INFO L78 Accepts]: Start accepts. Automaton has 199056 states and 917201 transitions. Word has length 25 [2022-01-18 07:40:41,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:40:41,614 INFO L470 AbstractCegarLoop]: Abstraction has 199056 states and 917201 transitions. [2022-01-18 07:40:41,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 07:40:41,614 INFO L276 IsEmpty]: Start isEmpty. Operand 199056 states and 917201 transitions. [2022-01-18 07:40:42,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:40:42,898 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:40:42,899 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] [2022-01-18 07:40:42,922 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 07:40:43,115 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 07:40:43,115 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:40:43,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:40:43,116 INFO L85 PathProgramCache]: Analyzing trace with hash -606187362, now seen corresponding path program 13 times [2022-01-18 07:40:43,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:40:43,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537181521] [2022-01-18 07:40:43,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:40:43,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:40:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:43,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:40:43,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537181521] [2022-01-18 07:40:43,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537181521] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:40:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162801786] [2022-01-18 07:40:43,165 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:40:43,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:40:43,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:40:43,167 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 07:40:43,167 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 07:40:43,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:40:43,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:40:43,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:40:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:43,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:40:43,524 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:40:43,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162801786] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:40:43,524 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:40:43,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 18 [2022-01-18 07:40:43,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829179992] [2022-01-18 07:40:43,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:40:43,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:40:43,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:40:43,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:40:43,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:40:43,525 INFO L87 Difference]: Start difference. First operand 199056 states and 917201 transitions. Second operand has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 07:40:48,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:40:48,116 INFO L93 Difference]: Finished difference Result 272500 states and 1225177 transitions. [2022-01-18 07:40:48,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-01-18 07:40:48,116 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 25 [2022-01-18 07:40:48,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:40:49,884 INFO L225 Difference]: With dead ends: 272500 [2022-01-18 07:40:49,884 INFO L226 Difference]: Without dead ends: 272269 [2022-01-18 07:40:49,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 958 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=928, Invalid=2264, Unknown=0, NotChecked=0, Total=3192 [2022-01-18 07:40:49,885 INFO L933 BasicCegarLoop]: 52 mSDtfsCounter, 547 mSDsluCounter, 878 mSDsCounter, 0 mSdLazyCounter, 1323 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:40:49,885 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [547 Valid, 487 Invalid, 1546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1323 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:40:50,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272269 states. [2022-01-18 07:40:58,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272269 to 201570. [2022-01-18 07:40:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 201570 states, 201569 states have (on average 4.602304917918926) internal successors, (927682), 201569 states have internal predecessors, (927682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:01,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201570 states to 201570 states and 927682 transitions. [2022-01-18 07:41:01,367 INFO L78 Accepts]: Start accepts. Automaton has 201570 states and 927682 transitions. Word has length 25 [2022-01-18 07:41:01,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:01,368 INFO L470 AbstractCegarLoop]: Abstraction has 201570 states and 927682 transitions. [2022-01-18 07:41:01,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 18 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 07:41:01,368 INFO L276 IsEmpty]: Start isEmpty. Operand 201570 states and 927682 transitions. [2022-01-18 07:41:02,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:41:02,014 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:02,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:02,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:02,223 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 07:41:02,223 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:41:02,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:02,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1468668168, now seen corresponding path program 14 times [2022-01-18 07:41:02,224 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:02,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942482700] [2022-01-18 07:41:02,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:02,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:02,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:02,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:02,357 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:02,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942482700] [2022-01-18 07:41:02,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942482700] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:02,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881823950] [2022-01-18 07:41:02,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:41:02,358 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:02,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:02,368 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 07:41:02,419 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 07:41:02,425 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:41:02,426 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:02,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:41:02,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:02,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:02,621 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:03,134 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:03,135 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1881823950] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:03,135 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:03,135 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-01-18 07:41:03,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946908091] [2022-01-18 07:41:03,135 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:03,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:41:03,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:03,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:41:03,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=178, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:41:03,136 INFO L87 Difference]: Start difference. First operand 201570 states and 927682 transitions. Second operand has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:08,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:08,501 INFO L93 Difference]: Finished difference Result 266946 states and 1207930 transitions. [2022-01-18 07:41:08,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 07:41:08,502 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:41:08,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:10,880 INFO L225 Difference]: With dead ends: 266946 [2022-01-18 07:41:10,881 INFO L226 Difference]: Without dead ends: 266520 [2022-01-18 07:41:10,881 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 564 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=606, Invalid=1286, Unknown=0, NotChecked=0, Total=1892 [2022-01-18 07:41:10,881 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 362 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 293 SdHoareTripleChecker+Invalid, 1172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:10,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 293 Invalid, 1172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-01-18 07:41:11,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266520 states. [2022-01-18 07:41:17,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266520 to 207040. [2022-01-18 07:41:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207040 states, 207039 states have (on average 4.61873366853588) internal successors, (956258), 207039 states have internal predecessors, (956258), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:19,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207040 states to 207040 states and 956258 transitions. [2022-01-18 07:41:19,919 INFO L78 Accepts]: Start accepts. Automaton has 207040 states and 956258 transitions. Word has length 25 [2022-01-18 07:41:19,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:19,919 INFO L470 AbstractCegarLoop]: Abstraction has 207040 states and 956258 transitions. [2022-01-18 07:41:19,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.2941176470588234) internal successors, (56), 16 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:19,919 INFO L276 IsEmpty]: Start isEmpty. Operand 207040 states and 956258 transitions. [2022-01-18 07:41:21,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:41:21,189 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:21,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:21,208 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Forceful destruction successful, exit code 0 [2022-01-18 07:41:21,395 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 07:41:21,395 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:41:21,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:21,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1088513630, now seen corresponding path program 15 times [2022-01-18 07:41:21,396 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:21,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019924734] [2022-01-18 07:41:21,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:21,396 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:21,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:21,471 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:21,471 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019924734] [2022-01-18 07:41:21,471 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019924734] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:21,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1498478688] [2022-01-18 07:41:21,472 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:41:21,472 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:21,472 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:21,473 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 07:41:21,473 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 07:41:21,496 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:41:21,496 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:21,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:41:21,497 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:21,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:21,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:22,000 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:22,000 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1498478688] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:22,000 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:22,000 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2022-01-18 07:41:22,000 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18236301] [2022-01-18 07:41:22,000 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:22,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:41:22,001 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:22,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:41:22,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:41:22,001 INFO L87 Difference]: Start difference. First operand 207040 states and 956258 transitions. Second operand has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:26,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:26,643 INFO L93 Difference]: Finished difference Result 280619 states and 1273483 transitions. [2022-01-18 07:41:26,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-01-18 07:41:26,644 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:41:26,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:28,466 INFO L225 Difference]: With dead ends: 280619 [2022-01-18 07:41:28,466 INFO L226 Difference]: Without dead ends: 279921 [2022-01-18 07:41:28,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 39 SyntacticMatches, 2 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 504 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=540, Invalid=1440, Unknown=0, NotChecked=0, Total=1980 [2022-01-18 07:41:28,467 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 351 mSDsluCounter, 456 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 1177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:28,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 272 Invalid, 1177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-01-18 07:41:29,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279921 states. [2022-01-18 07:41:36,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279921 to 207582. [2022-01-18 07:41:36,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207582 states, 207581 states have (on average 4.619536470100828) internal successors, (958928), 207581 states have internal predecessors, (958928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:38,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207582 states to 207582 states and 958928 transitions. [2022-01-18 07:41:38,747 INFO L78 Accepts]: Start accepts. Automaton has 207582 states and 958928 transitions. Word has length 25 [2022-01-18 07:41:38,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:38,747 INFO L470 AbstractCegarLoop]: Abstraction has 207582 states and 958928 transitions. [2022-01-18 07:41:38,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.4705882352941178) internal successors, (59), 16 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:38,747 INFO L276 IsEmpty]: Start isEmpty. Operand 207582 states and 958928 transitions. [2022-01-18 07:41:40,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:41:40,040 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:41:40,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:41:40,099 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 07:41:40,271 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 07:41:40,271 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:41:40,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:41:40,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1418787674, now seen corresponding path program 16 times [2022-01-18 07:41:40,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:41:40,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1356590997] [2022-01-18 07:41:40,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:41:40,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:41:40,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:41:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:40,378 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:41:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1356590997] [2022-01-18 07:41:40,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1356590997] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:41:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872049938] [2022-01-18 07:41:40,379 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:41:40,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:41:40,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:41:40,380 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 07:41:40,381 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 07:41:40,408 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:41:40,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:41:40,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:41:40,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:41:40,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:40,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:41:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:41:41,133 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872049938] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:41:41,133 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:41:41,133 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2022-01-18 07:41:41,133 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641884006] [2022-01-18 07:41:41,134 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:41:41,134 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:41:41,134 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:41:41,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:41:41,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:41:41,135 INFO L87 Difference]: Start difference. First operand 207582 states and 958928 transitions. Second operand has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:46,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:41:46,372 INFO L93 Difference]: Finished difference Result 298525 states and 1353381 transitions. [2022-01-18 07:41:46,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-01-18 07:41:46,372 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:41:46,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:41:48,360 INFO L225 Difference]: With dead ends: 298525 [2022-01-18 07:41:48,360 INFO L226 Difference]: Without dead ends: 298229 [2022-01-18 07:41:48,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 421 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=451, Invalid=1189, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 07:41:48,361 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 371 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 909 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 909 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:41:48,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 239 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 909 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:41:49,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298229 states. [2022-01-18 07:41:56,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298229 to 208261. [2022-01-18 07:41:57,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208261 states, 208260 states have (on average 4.618692979928935) internal successors, (961889), 208260 states have internal predecessors, (961889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:59,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208261 states to 208261 states and 961889 transitions. [2022-01-18 07:41:59,056 INFO L78 Accepts]: Start accepts. Automaton has 208261 states and 961889 transitions. Word has length 25 [2022-01-18 07:41:59,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:41:59,056 INFO L470 AbstractCegarLoop]: Abstraction has 208261 states and 961889 transitions. [2022-01-18 07:41:59,056 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.0555555555555554) internal successors, (55), 17 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:41:59,056 INFO L276 IsEmpty]: Start isEmpty. Operand 208261 states and 961889 transitions. [2022-01-18 07:42:00,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:42:00,338 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:42:00,338 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] [2022-01-18 07:42:00,353 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 07:42:00,539 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 07:42:00,539 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:42:00,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:42:00,539 INFO L85 PathProgramCache]: Analyzing trace with hash -1719960572, now seen corresponding path program 5 times [2022-01-18 07:42:00,540 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:42:00,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514818983] [2022-01-18 07:42:00,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:42:00,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:42:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:42:00,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:00,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:42:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514818983] [2022-01-18 07:42:00,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514818983] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:42:00,576 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [708979963] [2022-01-18 07:42:00,576 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:42:00,576 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:42:00,576 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:42:00,577 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 07:42:00,578 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 07:42:00,605 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:42:00,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:42:00,606 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:42:00,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:42:00,679 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:00,679 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:42:00,811 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:00,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [708979963] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:42:00,812 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:42:00,812 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-01-18 07:42:00,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200552350] [2022-01-18 07:42:00,812 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:42:00,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:42:00,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:42:00,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:42:00,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:42:00,813 INFO L87 Difference]: Start difference. First operand 208261 states and 961889 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:04,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:42:04,842 INFO L93 Difference]: Finished difference Result 260038 states and 1192644 transitions. [2022-01-18 07:42:04,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-01-18 07:42:04,855 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:42:04,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:42:07,584 INFO L225 Difference]: With dead ends: 260038 [2022-01-18 07:42:07,584 INFO L226 Difference]: Without dead ends: 259989 [2022-01-18 07:42:07,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=202, Invalid=398, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:42:07,585 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 351 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 379 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:42:07,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [351 Valid, 135 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 379 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:42:07,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259989 states. [2022-01-18 07:42:15,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259989 to 212361. [2022-01-18 07:42:15,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212361 states, 212360 states have (on average 4.627462799020531) internal successors, (982688), 212360 states have internal predecessors, (982688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:17,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212361 states to 212361 states and 982688 transitions. [2022-01-18 07:42:17,541 INFO L78 Accepts]: Start accepts. Automaton has 212361 states and 982688 transitions. Word has length 25 [2022-01-18 07:42:17,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:42:17,543 INFO L470 AbstractCegarLoop]: Abstraction has 212361 states and 982688 transitions. [2022-01-18 07:42:17,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:17,543 INFO L276 IsEmpty]: Start isEmpty. Operand 212361 states and 982688 transitions. [2022-01-18 07:42:18,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:42:18,090 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:42:18,090 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] [2022-01-18 07:42:18,107 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 07:42:18,291 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 07:42:18,292 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:42:18,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:42:18,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1718549628, now seen corresponding path program 4 times [2022-01-18 07:42:18,292 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:42:18,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185573155] [2022-01-18 07:42:18,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:42:18,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:42:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:42:18,324 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:18,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:42:18,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185573155] [2022-01-18 07:42:18,325 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185573155] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:42:18,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [420857948] [2022-01-18 07:42:18,325 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:42:18,325 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:42:18,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:42:18,326 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 07:42:18,327 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 07:42:18,355 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:42:18,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:42:18,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:42:18,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:42:18,428 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:18,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:42:18,589 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:18,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [420857948] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:42:18,589 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:42:18,589 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 7] total 13 [2022-01-18 07:42:18,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343467415] [2022-01-18 07:42:18,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:42:18,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:42:18,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:42:18,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:42:18,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=115, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:42:18,590 INFO L87 Difference]: Start difference. First operand 212361 states and 982688 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:42:21,738 INFO L93 Difference]: Finished difference Result 229775 states and 1055842 transitions. [2022-01-18 07:42:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:42:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:42:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:42:23,290 INFO L225 Difference]: With dead ends: 229775 [2022-01-18 07:42:23,290 INFO L226 Difference]: Without dead ends: 229757 [2022-01-18 07:42:23,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=160, Invalid=302, Unknown=0, NotChecked=0, Total=462 [2022-01-18 07:42:23,291 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 206 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 466 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 108 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:42:23,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [206 Valid, 108 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 466 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:42:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229757 states. [2022-01-18 07:42:30,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229757 to 212525. [2022-01-18 07:42:30,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212525 states, 212524 states have (on average 4.627698518755529) internal successors, (983497), 212524 states have internal predecessors, (983497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:32,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212525 states to 212525 states and 983497 transitions. [2022-01-18 07:42:32,341 INFO L78 Accepts]: Start accepts. Automaton has 212525 states and 983497 transitions. Word has length 25 [2022-01-18 07:42:32,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:42:32,341 INFO L470 AbstractCegarLoop]: Abstraction has 212525 states and 983497 transitions. [2022-01-18 07:42:32,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:32,341 INFO L276 IsEmpty]: Start isEmpty. Operand 212525 states and 983497 transitions. [2022-01-18 07:42:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:42:33,645 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:42:33,645 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:42:33,660 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 07:42:33,845 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 07:42:33,845 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:42:33,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:42:33,846 INFO L85 PathProgramCache]: Analyzing trace with hash -173141082, now seen corresponding path program 5 times [2022-01-18 07:42:33,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:42:33,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362711157] [2022-01-18 07:42:33,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:42:33,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:42:33,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:42:33,889 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:33,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:42:33,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362711157] [2022-01-18 07:42:33,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1362711157] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:42:33,889 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1749569393] [2022-01-18 07:42:33,889 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:42:33,889 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:42:33,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:42:33,890 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 07:42:33,891 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 07:42:33,920 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:42:33,920 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:42:33,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:42:33,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:42:33,990 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:33,991 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:42:34,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:34,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1749569393] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 07:42:34,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 07:42:34,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6] total 13 [2022-01-18 07:42:34,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929848324] [2022-01-18 07:42:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:42:34,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 07:42:34,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:42:34,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 07:42:34,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:42:34,131 INFO L87 Difference]: Start difference. First operand 212525 states and 983497 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:42:36,558 INFO L93 Difference]: Finished difference Result 238221 states and 1091394 transitions. [2022-01-18 07:42:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 07:42:36,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:42:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:42:38,738 INFO L225 Difference]: With dead ends: 238221 [2022-01-18 07:42:38,738 INFO L226 Difference]: Without dead ends: 238203 [2022-01-18 07:42:38,738 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=133, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:42:38,739 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 108 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 118 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 118 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:42:38,739 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 40 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 118 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:42:38,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238203 states. [2022-01-18 07:42:45,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238203 to 212582. [2022-01-18 07:42:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212582 states, 212581 states have (on average 4.627530212013303) internal successors, (983725), 212581 states have internal predecessors, (983725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212582 states to 212582 states and 983725 transitions. [2022-01-18 07:42:48,045 INFO L78 Accepts]: Start accepts. Automaton has 212582 states and 983725 transitions. Word has length 25 [2022-01-18 07:42:48,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:42:48,045 INFO L470 AbstractCegarLoop]: Abstraction has 212582 states and 983725 transitions. [2022-01-18 07:42:48,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:48,045 INFO L276 IsEmpty]: Start isEmpty. Operand 212582 states and 983725 transitions. [2022-01-18 07:42:48,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:42:48,547 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:42:48,547 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] [2022-01-18 07:42:48,563 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 07:42:48,747 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 07:42:48,747 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:42:48,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:42:48,748 INFO L85 PathProgramCache]: Analyzing trace with hash 365477176, now seen corresponding path program 6 times [2022-01-18 07:42:48,748 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:42:48,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [253838939] [2022-01-18 07:42:48,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:42:48,748 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:42:48,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:42:49,558 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:49,558 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:42:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [253838939] [2022-01-18 07:42:49,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [253838939] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:42:49,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288895417] [2022-01-18 07:42:49,559 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:42:49,559 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:42:49,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:42:49,560 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 07:42:49,561 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 07:42:49,597 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:42:49,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:42:49,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:42:49,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:42:49,650 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:49,650 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:42:49,868 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:42:49,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288895417] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:42:49,869 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:42:49,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 13 [2022-01-18 07:42:49,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108767957] [2022-01-18 07:42:49,869 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:42:49,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:42:49,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:42:49,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:42:49,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:42:49,870 INFO L87 Difference]: Start difference. First operand 212582 states and 983725 transitions. Second operand has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:42:53,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:42:53,945 INFO L93 Difference]: Finished difference Result 320511 states and 1434893 transitions. [2022-01-18 07:42:53,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-01-18 07:42:53,946 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:42:53,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:42:56,173 INFO L225 Difference]: With dead ends: 320511 [2022-01-18 07:42:56,174 INFO L226 Difference]: Without dead ends: 320475 [2022-01-18 07:42:56,174 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=510, Unknown=0, NotChecked=0, Total=702 [2022-01-18 07:42:56,174 INFO L933 BasicCegarLoop]: 24 mSDtfsCounter, 209 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:42:56,174 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [209 Valid, 200 Invalid, 686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:42:56,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320475 states. [2022-01-18 07:43:05,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320475 to 230390. [2022-01-18 07:43:05,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230390 states, 230389 states have (on average 4.602394211529196) internal successors, (1060341), 230389 states have internal predecessors, (1060341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:08,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230390 states to 230390 states and 1060341 transitions. [2022-01-18 07:43:08,107 INFO L78 Accepts]: Start accepts. Automaton has 230390 states and 1060341 transitions. Word has length 25 [2022-01-18 07:43:08,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:43:08,107 INFO L470 AbstractCegarLoop]: Abstraction has 230390 states and 1060341 transitions. [2022-01-18 07:43:08,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.142857142857143) internal successors, (44), 13 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:08,107 INFO L276 IsEmpty]: Start isEmpty. Operand 230390 states and 1060341 transitions. [2022-01-18 07:43:08,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:43:08,727 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:43:08,727 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] [2022-01-18 07:43:08,743 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2022-01-18 07:43:08,928 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 07:43:08,928 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:43:08,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:43:08,928 INFO L85 PathProgramCache]: Analyzing trace with hash -520321104, now seen corresponding path program 7 times [2022-01-18 07:43:08,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:43:08,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046535139] [2022-01-18 07:43:08,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:43:08,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:43:08,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:43:09,008 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:09,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:43:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046535139] [2022-01-18 07:43:09,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046535139] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:43:09,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246762545] [2022-01-18 07:43:09,009 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:43:09,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:43:09,009 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:43:09,010 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 07:43:09,011 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 07:43:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:43:09,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:43:09,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:43:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:09,148 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:43:09,548 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:09,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246762545] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:43:09,548 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:43:09,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2022-01-18 07:43:09,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [206063777] [2022-01-18 07:43:09,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:43:09,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:43:09,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:43:09,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:43:09,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:43:09,549 INFO L87 Difference]: Start difference. First operand 230390 states and 1060341 transitions. Second operand has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:15,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:43:15,135 INFO L93 Difference]: Finished difference Result 267748 states and 1210999 transitions. [2022-01-18 07:43:15,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-01-18 07:43:15,135 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:43:15,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:43:17,400 INFO L225 Difference]: With dead ends: 267748 [2022-01-18 07:43:17,401 INFO L226 Difference]: Without dead ends: 266916 [2022-01-18 07:43:17,401 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=388, Invalid=1252, Unknown=0, NotChecked=0, Total=1640 [2022-01-18 07:43:17,403 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 245 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 1571 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 245 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-01-18 07:43:17,403 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [245 Valid, 400 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1571 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-01-18 07:43:17,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266916 states. [2022-01-18 07:43:26,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266916 to 230614. [2022-01-18 07:43:26,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230614 states, 230613 states have (on average 4.602069267560806) internal successors, (1061297), 230613 states have internal predecessors, (1061297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:28,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230614 states to 230614 states and 1061297 transitions. [2022-01-18 07:43:28,913 INFO L78 Accepts]: Start accepts. Automaton has 230614 states and 1061297 transitions. Word has length 25 [2022-01-18 07:43:28,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:43:28,913 INFO L470 AbstractCegarLoop]: Abstraction has 230614 states and 1061297 transitions. [2022-01-18 07:43:28,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.0) internal successors, (48), 15 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:28,913 INFO L276 IsEmpty]: Start isEmpty. Operand 230614 states and 1061297 transitions. [2022-01-18 07:43:29,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:43:29,513 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:43:29,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:43:29,528 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 07:43:29,713 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 07:43:29,714 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:43:29,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:43:29,714 INFO L85 PathProgramCache]: Analyzing trace with hash 999511228, now seen corresponding path program 8 times [2022-01-18 07:43:29,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:43:29,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584523961] [2022-01-18 07:43:29,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:43:29,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:43:29,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:43:29,766 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:29,767 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:43:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584523961] [2022-01-18 07:43:29,767 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584523961] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:43:29,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [457187014] [2022-01-18 07:43:29,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:43:29,767 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:43:29,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:43:29,768 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 07:43:29,771 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 07:43:29,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:43:29,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:43:29,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:43:29,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:43:29,906 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:29,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:43:30,121 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:30,121 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [457187014] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:43:30,121 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:43:30,121 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 16 [2022-01-18 07:43:30,121 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544470598] [2022-01-18 07:43:30,121 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:43:30,122 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:43:30,122 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:43:30,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:43:30,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:43:30,122 INFO L87 Difference]: Start difference. First operand 230614 states and 1061297 transitions. Second operand has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:36,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:43:36,685 INFO L93 Difference]: Finished difference Result 413825 states and 1852168 transitions. [2022-01-18 07:43:36,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-01-18 07:43:36,686 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:43:36,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:43:40,390 INFO L225 Difference]: With dead ends: 413825 [2022-01-18 07:43:40,390 INFO L226 Difference]: Without dead ends: 413813 [2022-01-18 07:43:40,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 37 SyntacticMatches, 3 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1710 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1204, Invalid=3626, Unknown=0, NotChecked=0, Total=4830 [2022-01-18 07:43:40,392 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 769 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 287 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 769 SdHoareTripleChecker+Valid, 196 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 287 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:43:40,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [769 Valid, 196 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [287 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:43:40,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413813 states. [2022-01-18 07:43:52,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413813 to 280250. [2022-01-18 07:43:53,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280250 states, 280249 states have (on average 4.605258181117506) internal successors, (1290619), 280249 states have internal predecessors, (1290619), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:56,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280250 states to 280250 states and 1290619 transitions. [2022-01-18 07:43:56,341 INFO L78 Accepts]: Start accepts. Automaton has 280250 states and 1290619 transitions. Word has length 25 [2022-01-18 07:43:56,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:43:56,341 INFO L470 AbstractCegarLoop]: Abstraction has 280250 states and 1290619 transitions. [2022-01-18 07:43:56,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.9411764705882355) internal successors, (50), 16 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:43:56,341 INFO L276 IsEmpty]: Start isEmpty. Operand 280250 states and 1290619 transitions. [2022-01-18 07:43:57,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:43:57,178 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:43:57,178 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] [2022-01-18 07:43:57,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2022-01-18 07:43:57,378 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 07:43:57,378 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:43:57,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:43:57,379 INFO L85 PathProgramCache]: Analyzing trace with hash -59652642, now seen corresponding path program 9 times [2022-01-18 07:43:57,379 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:43:57,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188069432] [2022-01-18 07:43:57,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:43:57,379 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:43:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:43:57,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:57,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:43:57,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188069432] [2022-01-18 07:43:57,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188069432] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:43:57,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530075232] [2022-01-18 07:43:57,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:43:57,434 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:43:57,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:43:57,435 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 07:43:57,439 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 07:43:57,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:43:57,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:43:57,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 10 conjunts are in the unsatisfiable core [2022-01-18 07:43:57,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:43:57,571 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:57,571 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:43:57,831 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:43:57,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530075232] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:43:57,831 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:43:57,832 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 16 [2022-01-18 07:43:57,832 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243501817] [2022-01-18 07:43:57,832 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:43:57,832 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:43:57,832 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:43:57,832 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:43:57,832 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=196, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:43:57,832 INFO L87 Difference]: Start difference. First operand 280250 states and 1290619 transitions. Second operand has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:03,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:44:03,575 INFO L93 Difference]: Finished difference Result 351958 states and 1583315 transitions. [2022-01-18 07:44:03,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-01-18 07:44:03,591 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:44:03,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:44:06,111 INFO L225 Difference]: With dead ends: 351958 [2022-01-18 07:44:06,112 INFO L226 Difference]: Without dead ends: 351958 [2022-01-18 07:44:06,112 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 953 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=766, Invalid=2204, Unknown=0, NotChecked=0, Total=2970 [2022-01-18 07:44:06,113 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 462 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 735 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:44:06,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [462 Valid, 233 Invalid, 937 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 735 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:44:07,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351958 states. [2022-01-18 07:44:18,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351958 to 282995. [2022-01-18 07:44:19,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282995 states, 282994 states have (on average 4.603560499515891) internal successors, (1302780), 282994 states have internal predecessors, (1302780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:21,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282995 states to 282995 states and 1302780 transitions. [2022-01-18 07:44:21,421 INFO L78 Accepts]: Start accepts. Automaton has 282995 states and 1302780 transitions. Word has length 25 [2022-01-18 07:44:21,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:44:21,421 INFO L470 AbstractCegarLoop]: Abstraction has 282995 states and 1302780 transitions. [2022-01-18 07:44:21,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.764705882352941) internal successors, (47), 16 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:21,421 INFO L276 IsEmpty]: Start isEmpty. Operand 282995 states and 1302780 transitions. [2022-01-18 07:44:22,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:44:22,814 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:44:22,814 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] [2022-01-18 07:44:22,838 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 07:44:23,036 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 07:44:23,036 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:44:23,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:44:23,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1959426700, now seen corresponding path program 10 times [2022-01-18 07:44:23,037 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:44:23,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103453021] [2022-01-18 07:44:23,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:44:23,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:44:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:44:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:44:23,100 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:44:23,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103453021] [2022-01-18 07:44:23,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103453021] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:44:23,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640941244] [2022-01-18 07:44:23,100 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:44:23,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:44:23,100 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:44:23,101 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 07:44:23,102 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 07:44:23,125 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:44:23,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:44:23,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:44:23,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:44:23,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:44:23,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:44:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:44:23,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640941244] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:44:23,641 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:44:23,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2022-01-18 07:44:23,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221264421] [2022-01-18 07:44:23,641 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:44:23,641 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:44:23,641 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:44:23,642 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:44:23,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:44:23,642 INFO L87 Difference]: Start difference. First operand 282995 states and 1302780 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:28,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:44:28,140 INFO L93 Difference]: Finished difference Result 307552 states and 1402679 transitions. [2022-01-18 07:44:28,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 07:44:28,141 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:44:28,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:44:32,168 INFO L225 Difference]: With dead ends: 307552 [2022-01-18 07:44:32,168 INFO L226 Difference]: Without dead ends: 307360 [2022-01-18 07:44:32,169 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 39 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 396 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=441, Invalid=965, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:44:32,169 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 386 mSDsluCounter, 278 mSDsCounter, 0 mSdLazyCounter, 640 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 386 SdHoareTripleChecker+Valid, 164 SdHoareTripleChecker+Invalid, 745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:44:32,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [386 Valid, 164 Invalid, 745 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 640 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:44:32,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307360 states. [2022-01-18 07:44:43,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307360 to 282987. [2022-01-18 07:44:44,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282987 states, 282986 states have (on average 4.603923869025323) internal successors, (1302846), 282986 states have internal predecessors, (1302846), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:46,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282987 states to 282987 states and 1302846 transitions. [2022-01-18 07:44:46,704 INFO L78 Accepts]: Start accepts. Automaton has 282987 states and 1302846 transitions. Word has length 25 [2022-01-18 07:44:46,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:44:46,704 INFO L470 AbstractCegarLoop]: Abstraction has 282987 states and 1302846 transitions. [2022-01-18 07:44:46,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 15 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:46,705 INFO L276 IsEmpty]: Start isEmpty. Operand 282987 states and 1302846 transitions. [2022-01-18 07:44:47,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:44:47,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:44:47,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:44:47,497 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (47)] Forceful destruction successful, exit code 0 [2022-01-18 07:44:47,681 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 07:44:47,681 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:44:47,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:44:47,682 INFO L85 PathProgramCache]: Analyzing trace with hash 97696024, now seen corresponding path program 11 times [2022-01-18 07:44:47,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:44:47,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784307707] [2022-01-18 07:44:47,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:44:47,682 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:44:47,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:44:47,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:44:47,759 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:44:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784307707] [2022-01-18 07:44:47,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784307707] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:44:47,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1613668424] [2022-01-18 07:44:47,760 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:44:47,760 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:44:47,760 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:44:47,761 INFO L229 MonitoredProcess]: Starting monitored process 48 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:44:47,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Waiting until timeout for monitored process [2022-01-18 07:44:47,791 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:44:47,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:44:47,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:44:47,792 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:44:47,959 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:44:47,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:44:48,878 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:44:48,878 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1613668424] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:44:48,878 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:44:48,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 16 [2022-01-18 07:44:48,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866360597] [2022-01-18 07:44:48,878 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:44:48,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-01-18 07:44:48,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:44:48,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-01-18 07:44:48,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:44:48,879 INFO L87 Difference]: Start difference. First operand 282987 states and 1302846 transitions. Second operand has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:44:54,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:44:54,045 INFO L93 Difference]: Finished difference Result 333816 states and 1511917 transitions. [2022-01-18 07:44:54,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:44:54,045 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:44:54,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:44:56,318 INFO L225 Difference]: With dead ends: 333816 [2022-01-18 07:44:56,318 INFO L226 Difference]: Without dead ends: 333544 [2022-01-18 07:44:56,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 38 SyntacticMatches, 3 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=390, Invalid=1016, Unknown=0, NotChecked=0, Total=1406 [2022-01-18 07:44:56,319 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 497 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 213 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-01-18 07:44:56,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [497 Valid, 213 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-01-18 07:44:57,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333544 states. [2022-01-18 07:45:07,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333544 to 283854. [2022-01-18 07:45:07,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283854 states, 283853 states have (on average 4.603365122087841) internal successors, (1306679), 283853 states have internal predecessors, (1306679), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:11,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283854 states to 283854 states and 1306679 transitions. [2022-01-18 07:45:11,089 INFO L78 Accepts]: Start accepts. Automaton has 283854 states and 1306679 transitions. Word has length 25 [2022-01-18 07:45:11,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:45:11,089 INFO L470 AbstractCegarLoop]: Abstraction has 283854 states and 1306679 transitions. [2022-01-18 07:45:11,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0588235294117645) internal successors, (52), 16 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:11,089 INFO L276 IsEmpty]: Start isEmpty. Operand 283854 states and 1306679 transitions. [2022-01-18 07:45:11,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:45:11,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:45:11,873 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:45:11,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (48)] Forceful destruction successful, exit code 0 [2022-01-18 07:45:12,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,48 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:45:12,074 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:45:12,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:45:12,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1394277262, now seen corresponding path program 12 times [2022-01-18 07:45:12,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:45:12,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042752302] [2022-01-18 07:45:12,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:45:12,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:45:12,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:45:12,148 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:45:12,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:45:12,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042752302] [2022-01-18 07:45:12,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042752302] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:45:12,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001826866] [2022-01-18 07:45:12,148 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:45:12,148 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:45:12,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:45:12,149 INFO L229 MonitoredProcess]: Starting monitored process 49 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:45:12,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Waiting until timeout for monitored process [2022-01-18 07:45:12,173 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-01-18 07:45:12,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:45:12,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:45:12,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:45:12,266 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:45:12,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:45:12,640 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:45:12,640 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1001826866] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:45:12,640 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:45:12,640 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2022-01-18 07:45:12,640 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [525482309] [2022-01-18 07:45:12,640 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:45:12,640 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:45:12,640 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:45:12,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:45:12,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:45:12,641 INFO L87 Difference]: Start difference. First operand 283854 states and 1306679 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:17,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:45:17,525 INFO L93 Difference]: Finished difference Result 330131 states and 1496907 transitions. [2022-01-18 07:45:17,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-01-18 07:45:17,526 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:45:17,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:45:20,556 INFO L225 Difference]: With dead ends: 330131 [2022-01-18 07:45:20,556 INFO L226 Difference]: Without dead ends: 329792 [2022-01-18 07:45:20,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 414 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=485, Invalid=1237, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 07:45:20,557 INFO L933 BasicCegarLoop]: 43 mSDtfsCounter, 304 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 1198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:45:20,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [304 Valid, 295 Invalid, 1198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:45:20,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329792 states. [2022-01-18 07:45:31,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329792 to 284082. [2022-01-18 07:45:32,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284082 states, 284081 states have (on average 4.603352564937465) internal successors, (1307725), 284081 states have internal predecessors, (1307725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:34,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284082 states to 284082 states and 1307725 transitions. [2022-01-18 07:45:34,636 INFO L78 Accepts]: Start accepts. Automaton has 284082 states and 1307725 transitions. Word has length 25 [2022-01-18 07:45:34,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:45:34,636 INFO L470 AbstractCegarLoop]: Abstraction has 284082 states and 1307725 transitions. [2022-01-18 07:45:34,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:34,636 INFO L276 IsEmpty]: Start isEmpty. Operand 284082 states and 1307725 transitions. [2022-01-18 07:45:36,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:45:36,299 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:45:36,299 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] [2022-01-18 07:45:36,322 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (49)] Forceful destruction successful, exit code 0 [2022-01-18 07:45:36,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,49 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:45:36,522 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:45:36,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:45:36,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1595776552, now seen corresponding path program 4 times [2022-01-18 07:45:36,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:45:36,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56172666] [2022-01-18 07:45:36,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:45:36,522 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:45:36,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:45:36,561 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:45:36,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:45:36,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56172666] [2022-01-18 07:45:36,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56172666] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:45:36,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 07:45:36,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 07:45:36,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697619432] [2022-01-18 07:45:36,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:45:36,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:45:36,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:45:36,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:45:36,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 07:45:36,562 INFO L87 Difference]: Start difference. First operand 284082 states and 1307725 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:40,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:45:40,307 INFO L93 Difference]: Finished difference Result 263206 states and 1194939 transitions. [2022-01-18 07:45:40,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:45:40,308 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:45:40,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:45:42,711 INFO L225 Difference]: With dead ends: 263206 [2022-01-18 07:45:42,711 INFO L226 Difference]: Without dead ends: 217074 [2022-01-18 07:45:42,711 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 07:45:42,712 INFO L933 BasicCegarLoop]: 35 mSDtfsCounter, 34 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 07:45:42,712 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 84 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 07:45:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217074 states. [2022-01-18 07:45:48,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217074 to 137299. [2022-01-18 07:45:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137299 states, 137298 states have (on average 4.831687278765896) internal successors, (663381), 137298 states have internal predecessors, (663381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:49,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137299 states to 137299 states and 663381 transitions. [2022-01-18 07:45:49,643 INFO L78 Accepts]: Start accepts. Automaton has 137299 states and 663381 transitions. Word has length 25 [2022-01-18 07:45:49,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:45:49,643 INFO L470 AbstractCegarLoop]: Abstraction has 137299 states and 663381 transitions. [2022-01-18 07:45:49,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:49,643 INFO L276 IsEmpty]: Start isEmpty. Operand 137299 states and 663381 transitions. [2022-01-18 07:45:49,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:45:49,991 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:45:49,991 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] [2022-01-18 07:45:49,991 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-01-18 07:45:49,991 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:45:49,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:45:49,992 INFO L85 PathProgramCache]: Analyzing trace with hash -910855802, now seen corresponding path program 5 times [2022-01-18 07:45:49,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:45:49,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193095578] [2022-01-18 07:45:49,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:45:49,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:45:49,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:45:50,018 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:45:50,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:45:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193095578] [2022-01-18 07:45:50,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193095578] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:45:50,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1238998680] [2022-01-18 07:45:50,018 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:45:50,018 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:45:50,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:45:50,019 INFO L229 MonitoredProcess]: Starting monitored process 50 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:45:50,020 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Waiting until timeout for monitored process [2022-01-18 07:45:50,043 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:45:50,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:45:50,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:45:50,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:45:50,088 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:45:50,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-01-18 07:45:50,088 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1238998680] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 07:45:50,088 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-01-18 07:45:50,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-01-18 07:45:50,088 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180555801] [2022-01-18 07:45:50,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:45:50,089 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 07:45:50,089 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:45:50,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 07:45:50,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-01-18 07:45:50,089 INFO L87 Difference]: Start difference. First operand 137299 states and 663381 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:51,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:45:51,837 INFO L93 Difference]: Finished difference Result 141855 states and 679110 transitions. [2022-01-18 07:45:51,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 07:45:51,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:45:51,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:45:52,549 INFO L225 Difference]: With dead ends: 141855 [2022-01-18 07:45:52,549 INFO L226 Difference]: Without dead ends: 139818 [2022-01-18 07:45:52,549 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:45:52,549 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 80 mSDsluCounter, 79 mSDsCounter, 0 mSdLazyCounter, 172 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 172 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:45:52,550 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 57 Invalid, 199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 172 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:45:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139818 states. [2022-01-18 07:45:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139818 to 96081. [2022-01-18 07:45:55,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96081 states, 96080 states have (on average 4.798438800999167) internal successors, (461034), 96080 states have internal predecessors, (461034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:56,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96081 states to 96081 states and 461034 transitions. [2022-01-18 07:45:56,434 INFO L78 Accepts]: Start accepts. Automaton has 96081 states and 461034 transitions. Word has length 25 [2022-01-18 07:45:56,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:45:56,434 INFO L470 AbstractCegarLoop]: Abstraction has 96081 states and 461034 transitions. [2022-01-18 07:45:56,434 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:56,434 INFO L276 IsEmpty]: Start isEmpty. Operand 96081 states and 461034 transitions. [2022-01-18 07:45:56,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:45:56,635 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:45:56,635 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] [2022-01-18 07:45:56,651 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (50)] Forceful destruction successful, exit code 0 [2022-01-18 07:45:56,836 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2022-01-18 07:45:56,836 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:45:56,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:45:56,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2121620054, now seen corresponding path program 6 times [2022-01-18 07:45:56,836 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:45:56,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758156830] [2022-01-18 07:45:56,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:45:56,836 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:45:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:45:56,857 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:45:56,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:45:56,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758156830] [2022-01-18 07:45:56,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758156830] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:45:56,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303189183] [2022-01-18 07:45:56,857 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:45:56,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:45:56,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:45:56,858 INFO L229 MonitoredProcess]: Starting monitored process 51 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:45:56,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Waiting until timeout for monitored process [2022-01-18 07:45:56,880 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2022-01-18 07:45:56,880 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:45:56,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 5 conjunts are in the unsatisfiable core [2022-01-18 07:45:56,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:45:56,927 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:45:56,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:45:56,989 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:45:56,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303189183] provided 1 perfect and 1 imperfect interpolant sequences [2022-01-18 07:45:56,989 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-01-18 07:45:56,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 5] total 10 [2022-01-18 07:45:56,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855545623] [2022-01-18 07:45:56,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 07:45:56,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 07:45:56,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:45:56,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 07:45:56,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:45:56,990 INFO L87 Difference]: Start difference. First operand 96081 states and 461034 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:45:58,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:45:58,367 INFO L93 Difference]: Finished difference Result 109619 states and 523012 transitions. [2022-01-18 07:45:58,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 07:45:58,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:45:58,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:45:58,914 INFO L225 Difference]: With dead ends: 109619 [2022-01-18 07:45:58,914 INFO L226 Difference]: Without dead ends: 109570 [2022-01-18 07:45:58,914 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:45:58,915 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 34 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 07:45:58,915 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 35 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 07:45:59,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109570 states. [2022-01-18 07:46:01,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109570 to 96038. [2022-01-18 07:46:01,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96038 states, 96037 states have (on average 4.799202390745234) internal successors, (460901), 96037 states have internal predecessors, (460901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:01,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96038 states to 96038 states and 460901 transitions. [2022-01-18 07:46:01,879 INFO L78 Accepts]: Start accepts. Automaton has 96038 states and 460901 transitions. Word has length 25 [2022-01-18 07:46:01,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:01,879 INFO L470 AbstractCegarLoop]: Abstraction has 96038 states and 460901 transitions. [2022-01-18 07:46:01,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:01,879 INFO L276 IsEmpty]: Start isEmpty. Operand 96038 states and 460901 transitions. [2022-01-18 07:46:02,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:02,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:02,083 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] [2022-01-18 07:46:02,098 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (51)] Ended with exit code 0 [2022-01-18 07:46:02,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 51 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable54 [2022-01-18 07:46:02,283 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:02,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:02,283 INFO L85 PathProgramCache]: Analyzing trace with hash -744744372, now seen corresponding path program 7 times [2022-01-18 07:46:02,283 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:02,283 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636247979] [2022-01-18 07:46:02,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:02,284 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:02,316 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:02,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:02,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636247979] [2022-01-18 07:46:02,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636247979] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:02,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765306242] [2022-01-18 07:46:02,316 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:46:02,317 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:02,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:02,317 INFO L229 MonitoredProcess]: Starting monitored process 52 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:02,318 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Waiting until timeout for monitored process [2022-01-18 07:46:02,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:02,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:46:02,339 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:02,867 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:02,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:03,029 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:03,030 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765306242] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:03,030 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:03,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 12 [2022-01-18 07:46:03,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171693459] [2022-01-18 07:46:03,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:03,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:46:03,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:46:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:46:03,031 INFO L87 Difference]: Start difference. First operand 96038 states and 460901 transitions. Second operand has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:04,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:04,191 INFO L93 Difference]: Finished difference Result 110922 states and 525343 transitions. [2022-01-18 07:46:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 07:46:04,191 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:05,189 INFO L225 Difference]: With dead ends: 110922 [2022-01-18 07:46:05,189 INFO L226 Difference]: Without dead ends: 110790 [2022-01-18 07:46:05,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=208, Invalid=392, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:46:05,190 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 199 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:05,190 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 111 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:46:05,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110790 states. [2022-01-18 07:46:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110790 to 96112. [2022-01-18 07:46:07,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96112 states, 96111 states have (on average 4.798514217935512) internal successors, (461190), 96111 states have internal predecessors, (461190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96112 states to 96112 states and 461190 transitions. [2022-01-18 07:46:08,218 INFO L78 Accepts]: Start accepts. Automaton has 96112 states and 461190 transitions. Word has length 25 [2022-01-18 07:46:08,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:08,219 INFO L470 AbstractCegarLoop]: Abstraction has 96112 states and 461190 transitions. [2022-01-18 07:46:08,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.3076923076923075) internal successors, (43), 12 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:08,219 INFO L276 IsEmpty]: Start isEmpty. Operand 96112 states and 461190 transitions. [2022-01-18 07:46:08,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:08,435 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:08,435 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] [2022-01-18 07:46:08,450 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (52)] Forceful destruction successful, exit code 0 [2022-01-18 07:46:08,636 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2022-01-18 07:46:08,636 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:08,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:08,636 INFO L85 PathProgramCache]: Analyzing trace with hash 952110506, now seen corresponding path program 8 times [2022-01-18 07:46:08,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:08,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139653159] [2022-01-18 07:46:08,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:08,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:08,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:08,666 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:08,666 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:08,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139653159] [2022-01-18 07:46:08,666 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139653159] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:08,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842546808] [2022-01-18 07:46:08,666 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:46:08,666 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:08,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:08,667 INFO L229 MonitoredProcess]: Starting monitored process 53 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:08,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Waiting until timeout for monitored process [2022-01-18 07:46:08,688 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:46:08,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:46:08,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:46:08,689 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:08,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:08,860 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:08,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842546808] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:08,861 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:08,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-01-18 07:46:08,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294975084] [2022-01-18 07:46:08,861 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:08,861 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:46:08,861 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:08,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:46:08,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:46:08,861 INFO L87 Difference]: Start difference. First operand 96112 states and 461190 transitions. Second operand has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 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 07:46:10,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:10,729 INFO L93 Difference]: Finished difference Result 150132 states and 711760 transitions. [2022-01-18 07:46:10,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 07:46:10,730 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 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 25 [2022-01-18 07:46:10,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:11,489 INFO L225 Difference]: With dead ends: 150132 [2022-01-18 07:46:11,490 INFO L226 Difference]: Without dead ends: 150032 [2022-01-18 07:46:11,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=150, Invalid=270, Unknown=0, NotChecked=0, Total=420 [2022-01-18 07:46:11,490 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 213 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 404 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 498 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 404 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:11,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 111 Invalid, 498 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 404 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:46:11,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150032 states. [2022-01-18 07:46:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150032 to 115066. [2022-01-18 07:46:15,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115066 states, 115065 states have (on average 4.79491591709034) internal successors, (551727), 115065 states have internal predecessors, (551727), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115066 states to 115066 states and 551727 transitions. [2022-01-18 07:46:15,785 INFO L78 Accepts]: Start accepts. Automaton has 115066 states and 551727 transitions. Word has length 25 [2022-01-18 07:46:15,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:15,785 INFO L470 AbstractCegarLoop]: Abstraction has 115066 states and 551727 transitions. [2022-01-18 07:46:15,785 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.7857142857142856) internal successors, (53), 13 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 07:46:15,785 INFO L276 IsEmpty]: Start isEmpty. Operand 115066 states and 551727 transitions. [2022-01-18 07:46:16,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:16,011 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:16,011 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] [2022-01-18 07:46:16,027 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (53)] Forceful destruction successful, exit code 0 [2022-01-18 07:46:16,211 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 53 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2022-01-18 07:46:16,211 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:16,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:16,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1268665980, now seen corresponding path program 9 times [2022-01-18 07:46:16,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:16,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911774265] [2022-01-18 07:46:16,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:16,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:16,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:16,241 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:16,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:16,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911774265] [2022-01-18 07:46:16,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911774265] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:16,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113024525] [2022-01-18 07:46:16,242 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:46:16,242 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:16,242 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:16,243 INFO L229 MonitoredProcess]: Starting monitored process 54 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:16,263 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Waiting until timeout for monitored process [2022-01-18 07:46:16,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-01-18 07:46:16,270 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:46:16,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:46:16,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:16,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:16,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:16,450 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:16,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113024525] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:16,451 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:16,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 14 [2022-01-18 07:46:16,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487364874] [2022-01-18 07:46:16,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:16,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-01-18 07:46:16,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:16,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-01-18 07:46:16,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=132, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:46:16,452 INFO L87 Difference]: Start difference. First operand 115066 states and 551727 transitions. Second operand has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:18,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:18,126 INFO L93 Difference]: Finished difference Result 133379 states and 633643 transitions. [2022-01-18 07:46:18,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:46:18,127 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:18,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:19,271 INFO L225 Difference]: With dead ends: 133379 [2022-01-18 07:46:19,271 INFO L226 Difference]: Without dead ends: 133067 [2022-01-18 07:46:19,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=319, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:46:19,271 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 235 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 401 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:19,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 115 Invalid, 539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 401 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:46:19,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133067 states. [2022-01-18 07:46:22,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133067 to 119994. [2022-01-18 07:46:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119994 states, 119993 states have (on average 4.791654513179935) internal successors, (574965), 119993 states have internal predecessors, (574965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:23,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119994 states to 119994 states and 574965 transitions. [2022-01-18 07:46:23,559 INFO L78 Accepts]: Start accepts. Automaton has 119994 states and 574965 transitions. Word has length 25 [2022-01-18 07:46:23,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:23,559 INFO L470 AbstractCegarLoop]: Abstraction has 119994 states and 574965 transitions. [2022-01-18 07:46:23,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.2666666666666666) internal successors, (49), 14 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:23,559 INFO L276 IsEmpty]: Start isEmpty. Operand 119994 states and 574965 transitions. [2022-01-18 07:46:23,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:23,965 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:23,965 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] [2022-01-18 07:46:23,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (54)] Forceful destruction successful, exit code 0 [2022-01-18 07:46:24,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 54 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable57 [2022-01-18 07:46:24,167 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1827208640, now seen corresponding path program 10 times [2022-01-18 07:46:24,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:24,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616372428] [2022-01-18 07:46:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:24,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:24,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:24,199 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:24,199 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:24,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616372428] [2022-01-18 07:46:24,199 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616372428] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:24,199 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830960306] [2022-01-18 07:46:24,199 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:46:24,199 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:24,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:24,200 INFO L229 MonitoredProcess]: Starting monitored process 55 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:24,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Waiting until timeout for monitored process [2022-01-18 07:46:24,226 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:46:24,226 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:46:24,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:46:24,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:24,290 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:24,290 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:24,389 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:24,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1830960306] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:24,389 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:24,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 7, 6] total 13 [2022-01-18 07:46:24,389 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905928435] [2022-01-18 07:46:24,389 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:24,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:46:24,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:24,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:46:24,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:46:24,390 INFO L87 Difference]: Start difference. First operand 119994 states and 574965 transitions. Second operand has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:26,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:26,273 INFO L93 Difference]: Finished difference Result 139563 states and 657663 transitions. [2022-01-18 07:46:26,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-01-18 07:46:26,274 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:26,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:26,997 INFO L225 Difference]: With dead ends: 139563 [2022-01-18 07:46:26,997 INFO L226 Difference]: Without dead ends: 138630 [2022-01-18 07:46:26,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=184, Invalid=322, Unknown=0, NotChecked=0, Total=506 [2022-01-18 07:46:26,997 INFO L933 BasicCegarLoop]: 34 mSDtfsCounter, 286 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:26,997 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [286 Valid, 229 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:46:27,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138630 states. [2022-01-18 07:46:30,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138630 to 119847. [2022-01-18 07:46:30,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119847 states, 119846 states have (on average 4.790889975468518) internal successors, (574169), 119846 states have internal predecessors, (574169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:31,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119847 states to 119847 states and 574169 transitions. [2022-01-18 07:46:31,360 INFO L78 Accepts]: Start accepts. Automaton has 119847 states and 574169 transitions. Word has length 25 [2022-01-18 07:46:31,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:31,360 INFO L470 AbstractCegarLoop]: Abstraction has 119847 states and 574169 transitions. [2022-01-18 07:46:31,360 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.357142857142857) internal successors, (47), 13 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:31,360 INFO L276 IsEmpty]: Start isEmpty. Operand 119847 states and 574169 transitions. [2022-01-18 07:46:31,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:31,617 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:31,617 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] [2022-01-18 07:46:31,634 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (55)] Forceful destruction successful, exit code 0 [2022-01-18 07:46:31,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable58 [2022-01-18 07:46:31,818 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:31,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:31,818 INFO L85 PathProgramCache]: Analyzing trace with hash -27153446, now seen corresponding path program 11 times [2022-01-18 07:46:31,818 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:31,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599562865] [2022-01-18 07:46:31,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:31,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:31,857 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:31,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599562865] [2022-01-18 07:46:31,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599562865] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:31,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873719345] [2022-01-18 07:46:31,857 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:46:31,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:31,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:31,858 INFO L229 MonitoredProcess]: Starting monitored process 56 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:31,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Waiting until timeout for monitored process [2022-01-18 07:46:31,882 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-01-18 07:46:31,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:46:31,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 7 conjunts are in the unsatisfiable core [2022-01-18 07:46:31,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:31,954 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:31,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:32,093 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:32,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873719345] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:32,094 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:32,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-01-18 07:46:32,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084401774] [2022-01-18 07:46:32,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:32,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:46:32,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:32,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:46:32,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:46:32,095 INFO L87 Difference]: Start difference. First operand 119847 states and 574169 transitions. Second operand has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:34,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:34,577 INFO L93 Difference]: Finished difference Result 170289 states and 806851 transitions. [2022-01-18 07:46:34,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-01-18 07:46:34,578 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:34,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:35,834 INFO L225 Difference]: With dead ends: 170289 [2022-01-18 07:46:35,834 INFO L226 Difference]: Without dead ends: 170189 [2022-01-18 07:46:35,834 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 40 SyntacticMatches, 3 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=118, Invalid=224, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:46:35,835 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 163 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:35,835 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [163 Valid, 123 Invalid, 569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:46:36,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170189 states. [2022-01-18 07:46:39,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170189 to 122609. [2022-01-18 07:46:39,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122609 states, 122608 states have (on average 4.79268073861412) internal successors, (587621), 122608 states have internal predecessors, (587621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:40,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122609 states to 122609 states and 587621 transitions. [2022-01-18 07:46:40,249 INFO L78 Accepts]: Start accepts. Automaton has 122609 states and 587621 transitions. Word has length 25 [2022-01-18 07:46:40,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:40,249 INFO L470 AbstractCegarLoop]: Abstraction has 122609 states and 587621 transitions. [2022-01-18 07:46:40,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.6923076923076925) internal successors, (48), 12 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:40,249 INFO L276 IsEmpty]: Start isEmpty. Operand 122609 states and 587621 transitions. [2022-01-18 07:46:41,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:41,276 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:41,276 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] [2022-01-18 07:46:41,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (56)] Forceful destruction successful, exit code 0 [2022-01-18 07:46:41,476 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59,56 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:41,477 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:41,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:41,477 INFO L85 PathProgramCache]: Analyzing trace with hash -717988860, now seen corresponding path program 5 times [2022-01-18 07:46:41,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:41,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014102729] [2022-01-18 07:46:41,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:41,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:41,532 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:41,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:41,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014102729] [2022-01-18 07:46:41,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014102729] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:41,532 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1609165792] [2022-01-18 07:46:41,532 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:46:41,533 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:41,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:41,533 INFO L229 MonitoredProcess]: Starting monitored process 57 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:41,534 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Waiting until timeout for monitored process [2022-01-18 07:46:41,554 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:46:41,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:46:41,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:46:41,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:41,629 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:41,629 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:41,740 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:46:41,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1609165792] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:41,740 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:41,740 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 07:46:41,740 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653353014] [2022-01-18 07:46:41,740 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:41,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:46:41,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:41,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:46:41,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:46:41,741 INFO L87 Difference]: Start difference. First operand 122609 states and 587621 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:43,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:43,432 INFO L93 Difference]: Finished difference Result 125176 states and 597777 transitions. [2022-01-18 07:46:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:46:43,432 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:43,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:44,100 INFO L225 Difference]: With dead ends: 125176 [2022-01-18 07:46:44,101 INFO L226 Difference]: Without dead ends: 125070 [2022-01-18 07:46:44,101 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:46:44,101 INFO L933 BasicCegarLoop]: 71 mSDtfsCounter, 85 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 455 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 281 SdHoareTripleChecker+Invalid, 468 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 455 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:44,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 281 Invalid, 468 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 455 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:46:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125070 states. [2022-01-18 07:46:47,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125070 to 122755. [2022-01-18 07:46:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122755 states, 122754 states have (on average 4.7933346367531815) internal successors, (588401), 122754 states have internal predecessors, (588401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:48,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122755 states to 122755 states and 588401 transitions. [2022-01-18 07:46:48,369 INFO L78 Accepts]: Start accepts. Automaton has 122755 states and 588401 transitions. Word has length 25 [2022-01-18 07:46:48,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:48,369 INFO L470 AbstractCegarLoop]: Abstraction has 122755 states and 588401 transitions. [2022-01-18 07:46:48,369 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:48,369 INFO L276 IsEmpty]: Start isEmpty. Operand 122755 states and 588401 transitions. [2022-01-18 07:46:48,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:48,683 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:48,683 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] [2022-01-18 07:46:48,699 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (57)] Forceful destruction successful, exit code 0 [2022-01-18 07:46:48,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60,57 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:48,887 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:48,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:48,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1407949608, now seen corresponding path program 6 times [2022-01-18 07:46:48,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:48,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856234625] [2022-01-18 07:46:48,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:48,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:48,964 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:46:48,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856234625] [2022-01-18 07:46:48,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856234625] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:48,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1509103511] [2022-01-18 07:46:48,965 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:46:48,965 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:48,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:48,966 INFO L229 MonitoredProcess]: Starting monitored process 58 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:48,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Waiting until timeout for monitored process [2022-01-18 07:46:48,992 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:46:48,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:46:48,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:46:48,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:46:49,093 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:49,280 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:46:49,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1509103511] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:49,280 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:49,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:46:49,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323751540] [2022-01-18 07:46:49,280 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:49,280 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:46:49,280 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:49,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:46:49,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:46:49,281 INFO L87 Difference]: Start difference. First operand 122755 states and 588401 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:51,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:51,112 INFO L93 Difference]: Finished difference Result 124245 states and 594073 transitions. [2022-01-18 07:46:51,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 07:46:51,113 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:51,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:51,756 INFO L225 Difference]: With dead ends: 124245 [2022-01-18 07:46:51,757 INFO L226 Difference]: Without dead ends: 124057 [2022-01-18 07:46:51,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-01-18 07:46:51,757 INFO L933 BasicCegarLoop]: 56 mSDtfsCounter, 73 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:51,757 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 244 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:46:51,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124057 states. [2022-01-18 07:46:54,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124057 to 122809. [2022-01-18 07:46:54,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122809 states, 122808 states have (on average 4.793441795322781) internal successors, (588673), 122808 states have internal predecessors, (588673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:55,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122809 states to 122809 states and 588673 transitions. [2022-01-18 07:46:55,814 INFO L78 Accepts]: Start accepts. Automaton has 122809 states and 588673 transitions. Word has length 25 [2022-01-18 07:46:55,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:46:55,814 INFO L470 AbstractCegarLoop]: Abstraction has 122809 states and 588673 transitions. [2022-01-18 07:46:55,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:55,814 INFO L276 IsEmpty]: Start isEmpty. Operand 122809 states and 588673 transitions. [2022-01-18 07:46:56,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:46:56,103 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:46:56,103 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] [2022-01-18 07:46:56,118 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (58)] Ended with exit code 0 [2022-01-18 07:46:56,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61,58 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:56,303 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:46:56,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:46:56,303 INFO L85 PathProgramCache]: Analyzing trace with hash -338310452, now seen corresponding path program 7 times [2022-01-18 07:46:56,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:46:56,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136681084] [2022-01-18 07:46:56,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:46:56,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:46:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:56,349 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:46:56,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:46:56,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136681084] [2022-01-18 07:46:56,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136681084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:46:56,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281241429] [2022-01-18 07:46:56,350 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:46:56,350 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:46:56,350 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:46:56,350 INFO L229 MonitoredProcess]: Starting monitored process 59 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:46:56,351 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Waiting until timeout for monitored process [2022-01-18 07:46:56,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:46:56,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:46:56,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:46:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:46:56,431 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:46:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:46:56,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281241429] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:46:56,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:46:56,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 07:46:56,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187123466] [2022-01-18 07:46:56,530 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:46:56,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:46:56,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:46:56,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:46:56,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:46:56,530 INFO L87 Difference]: Start difference. First operand 122809 states and 588673 transitions. Second operand has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:46:58,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:46:58,259 INFO L93 Difference]: Finished difference Result 125488 states and 599208 transitions. [2022-01-18 07:46:58,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:46:58,260 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:46:58,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:46:58,885 INFO L225 Difference]: With dead ends: 125488 [2022-01-18 07:46:58,885 INFO L226 Difference]: Without dead ends: 125382 [2022-01-18 07:46:58,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 11 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:46:58,885 INFO L933 BasicCegarLoop]: 83 mSDtfsCounter, 98 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:46:58,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 413 Invalid, 554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:46:59,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125382 states. [2022-01-18 07:47:02,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125382 to 122894. [2022-01-18 07:47:02,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122894 states, 122893 states have (on average 4.79442279055764) internal successors, (589201), 122893 states have internal predecessors, (589201), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:02,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122894 states to 122894 states and 589201 transitions. [2022-01-18 07:47:02,953 INFO L78 Accepts]: Start accepts. Automaton has 122894 states and 589201 transitions. Word has length 25 [2022-01-18 07:47:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:02,954 INFO L470 AbstractCegarLoop]: Abstraction has 122894 states and 589201 transitions. [2022-01-18 07:47:02,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.9) internal successors, (29), 9 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:02,954 INFO L276 IsEmpty]: Start isEmpty. Operand 122894 states and 589201 transitions. [2022-01-18 07:47:03,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:47:03,218 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:03,218 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] [2022-01-18 07:47:03,234 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (59)] Ended with exit code 0 [2022-01-18 07:47:03,419 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable62 [2022-01-18 07:47:03,419 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:03,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:03,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1787628016, now seen corresponding path program 8 times [2022-01-18 07:47:03,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:03,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784764584] [2022-01-18 07:47:03,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:03,420 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:03,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:03,481 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:03,482 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:03,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784764584] [2022-01-18 07:47:03,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784764584] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:03,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216120342] [2022-01-18 07:47:03,482 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:47:03,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:03,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:03,483 INFO L229 MonitoredProcess]: Starting monitored process 60 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:03,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Waiting until timeout for monitored process [2022-01-18 07:47:03,503 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:47:03,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:47:03,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:47:03,504 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:03,587 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:03,587 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:03,726 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:03,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216120342] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:03,726 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:03,726 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:47:03,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806911411] [2022-01-18 07:47:03,726 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:03,727 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:47:03,727 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:03,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:47:03,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:47:03,727 INFO L87 Difference]: Start difference. First operand 122894 states and 589201 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:05,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:05,428 INFO L93 Difference]: Finished difference Result 124864 states and 596712 transitions. [2022-01-18 07:47:05,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:47:05,428 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:47:05,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:06,502 INFO L225 Difference]: With dead ends: 124864 [2022-01-18 07:47:06,502 INFO L226 Difference]: Without dead ends: 124676 [2022-01-18 07:47:06,502 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:47:06,503 INFO L933 BasicCegarLoop]: 69 mSDtfsCounter, 102 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:06,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 314 Invalid, 575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:47:06,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124676 states. [2022-01-18 07:47:09,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124676 to 122956. [2022-01-18 07:47:09,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122956 states, 122955 states have (on average 4.795055101459884) internal successors, (589576), 122955 states have internal predecessors, (589576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:10,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122956 states to 122956 states and 589576 transitions. [2022-01-18 07:47:10,052 INFO L78 Accepts]: Start accepts. Automaton has 122956 states and 589576 transitions. Word has length 25 [2022-01-18 07:47:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:10,052 INFO L470 AbstractCegarLoop]: Abstraction has 122956 states and 589576 transitions. [2022-01-18 07:47:10,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:10,053 INFO L276 IsEmpty]: Start isEmpty. Operand 122956 states and 589576 transitions. [2022-01-18 07:47:11,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:47:11,070 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:11,070 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] [2022-01-18 07:47:11,085 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (60)] Ended with exit code 0 [2022-01-18 07:47:11,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 60 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable63 [2022-01-18 07:47:11,271 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:11,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:11,272 INFO L85 PathProgramCache]: Analyzing trace with hash 234856072, now seen corresponding path program 9 times [2022-01-18 07:47:11,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:11,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396347978] [2022-01-18 07:47:11,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:11,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:11,361 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:11,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:11,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396347978] [2022-01-18 07:47:11,361 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396347978] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:11,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [840720859] [2022-01-18 07:47:11,361 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:47:11,361 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:11,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:11,362 INFO L229 MonitoredProcess]: Starting monitored process 61 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:11,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Waiting until timeout for monitored process [2022-01-18 07:47:11,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:47:11,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:47:11,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:47:11,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:11,484 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:11,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:11,656 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:11,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [840720859] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:11,656 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:11,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:47:11,656 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143905368] [2022-01-18 07:47:11,656 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:11,656 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:47:11,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:11,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:47:11,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:47:11,657 INFO L87 Difference]: Start difference. First operand 122956 states and 589576 transitions. Second operand has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:13,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:13,504 INFO L93 Difference]: Finished difference Result 124622 states and 595923 transitions. [2022-01-18 07:47:13,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:47:13,504 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:47:13,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:14,170 INFO L225 Difference]: With dead ends: 124622 [2022-01-18 07:47:14,171 INFO L226 Difference]: Without dead ends: 124434 [2022-01-18 07:47:14,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 37 SyntacticMatches, 10 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:47:14,171 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 90 mSDsluCounter, 526 mSDsCounter, 0 mSdLazyCounter, 703 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:14,171 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 415 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 703 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:47:14,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124434 states. [2022-01-18 07:47:17,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124434 to 123015. [2022-01-18 07:47:17,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123015 states, 123014 states have (on average 4.795689921472353) internal successors, (589937), 123014 states have internal predecessors, (589937), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:18,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123015 states to 123015 states and 589937 transitions. [2022-01-18 07:47:18,572 INFO L78 Accepts]: Start accepts. Automaton has 123015 states and 589937 transitions. Word has length 25 [2022-01-18 07:47:18,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:18,573 INFO L470 AbstractCegarLoop]: Abstraction has 123015 states and 589937 transitions. [2022-01-18 07:47:18,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.6363636363636362) internal successors, (29), 10 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:18,573 INFO L276 IsEmpty]: Start isEmpty. Operand 123015 states and 589937 transitions. [2022-01-18 07:47:18,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:47:18,900 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:18,900 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] [2022-01-18 07:47:18,916 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (61)] Forceful destruction successful, exit code 0 [2022-01-18 07:47:19,101 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64,61 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:19,101 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:19,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:19,101 INFO L85 PathProgramCache]: Analyzing trace with hash -1650793316, now seen corresponding path program 10 times [2022-01-18 07:47:19,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:19,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845881537] [2022-01-18 07:47:19,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:19,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:19,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:19,162 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:19,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:19,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845881537] [2022-01-18 07:47:19,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845881537] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:19,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1904869994] [2022-01-18 07:47:19,163 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-01-18 07:47:19,163 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:19,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:19,164 INFO L229 MonitoredProcess]: Starting monitored process 62 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:19,165 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Waiting until timeout for monitored process [2022-01-18 07:47:19,188 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-01-18 07:47:19,189 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:47:19,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:47:19,189 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:19,261 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:19,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:19,365 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:19,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1904869994] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:19,366 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:19,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 9 [2022-01-18 07:47:19,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141785253] [2022-01-18 07:47:19,366 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:19,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-01-18 07:47:19,366 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:19,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-01-18 07:47:19,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-01-18 07:47:19,367 INFO L87 Difference]: Start difference. First operand 123015 states and 589937 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:21,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:21,063 INFO L93 Difference]: Finished difference Result 125297 states and 598920 transitions. [2022-01-18 07:47:21,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:47:21,063 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:47:21,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:21,743 INFO L225 Difference]: With dead ends: 125297 [2022-01-18 07:47:21,743 INFO L226 Difference]: Without dead ends: 125191 [2022-01-18 07:47:21,743 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 12 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:47:21,743 INFO L933 BasicCegarLoop]: 68 mSDtfsCounter, 93 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:21,743 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 325 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 07:47:21,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125191 states. [2022-01-18 07:47:24,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125191 to 123082. [2022-01-18 07:47:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123082 states, 123081 states have (on average 4.79636174551718) internal successors, (590341), 123081 states have internal predecessors, (590341), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:26,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123082 states to 123082 states and 590341 transitions. [2022-01-18 07:47:26,338 INFO L78 Accepts]: Start accepts. Automaton has 123082 states and 590341 transitions. Word has length 25 [2022-01-18 07:47:26,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:26,338 INFO L470 AbstractCegarLoop]: Abstraction has 123082 states and 590341 transitions. [2022-01-18 07:47:26,338 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 9 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:26,338 INFO L276 IsEmpty]: Start isEmpty. Operand 123082 states and 590341 transitions. [2022-01-18 07:47:26,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-01-18 07:47:26,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:26,630 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] [2022-01-18 07:47:26,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (62)] Forceful destruction successful, exit code 0 [2022-01-18 07:47:26,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65,62 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:26,830 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:26,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:26,831 INFO L85 PathProgramCache]: Analyzing trace with hash 475145152, now seen corresponding path program 11 times [2022-01-18 07:47:26,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:26,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11277353] [2022-01-18 07:47:26,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:26,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:26,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:26,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:26,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:26,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11277353] [2022-01-18 07:47:26,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11277353] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:26,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398408053] [2022-01-18 07:47:26,914 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-01-18 07:47:26,914 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:26,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:26,915 INFO L229 MonitoredProcess]: Starting monitored process 63 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:26,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Waiting until timeout for monitored process [2022-01-18 07:47:26,947 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2022-01-18 07:47:26,947 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:47:26,948 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 12 conjunts are in the unsatisfiable core [2022-01-18 07:47:26,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:27,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:27,047 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:27,227 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:47:27,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398408053] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:27,228 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:27,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 10 [2022-01-18 07:47:27,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208081668] [2022-01-18 07:47:27,228 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:27,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 07:47:27,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:27,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 07:47:27,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-01-18 07:47:27,229 INFO L87 Difference]: Start difference. First operand 123082 states and 590341 transitions. Second operand has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:29,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:29,186 INFO L93 Difference]: Finished difference Result 124603 states and 596059 transitions. [2022-01-18 07:47:29,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-01-18 07:47:29,186 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2022-01-18 07:47:29,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:29,811 INFO L225 Difference]: With dead ends: 124603 [2022-01-18 07:47:29,812 INFO L226 Difference]: Without dead ends: 124415 [2022-01-18 07:47:29,812 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 36 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:47:29,812 INFO L933 BasicCegarLoop]: 57 mSDtfsCounter, 82 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 247 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:29,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 247 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:47:29,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124415 states. [2022-01-18 07:47:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124415 to 123111. [2022-01-18 07:47:33,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123111 states, 123110 states have (on average 4.796612785313947) internal successors, (590511), 123110 states have internal predecessors, (590511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:34,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123111 states to 123111 states and 590511 transitions. [2022-01-18 07:47:34,657 INFO L78 Accepts]: Start accepts. Automaton has 123111 states and 590511 transitions. Word has length 25 [2022-01-18 07:47:34,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:34,657 INFO L470 AbstractCegarLoop]: Abstraction has 123111 states and 590511 transitions. [2022-01-18 07:47:34,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 10 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:34,657 INFO L276 IsEmpty]: Start isEmpty. Operand 123111 states and 590511 transitions. [2022-01-18 07:47:34,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:47:34,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:34,934 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] [2022-01-18 07:47:34,950 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (63)] Forceful destruction successful, exit code 0 [2022-01-18 07:47:35,134 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable66 [2022-01-18 07:47:35,135 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:35,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:35,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1692378052, now seen corresponding path program 8 times [2022-01-18 07:47:35,135 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:35,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727999197] [2022-01-18 07:47:35,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:35,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:35,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:35,176 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:35,176 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:35,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [727999197] [2022-01-18 07:47:35,176 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [727999197] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:35,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354590304] [2022-01-18 07:47:35,176 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:47:35,177 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:35,177 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:35,178 INFO L229 MonitoredProcess]: Starting monitored process 64 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:35,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-01-18 07:47:35,204 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:47:35,204 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:47:35,205 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:47:35,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:35,267 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:35,412 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:35,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354590304] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:35,412 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:35,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 8] total 15 [2022-01-18 07:47:35,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380070153] [2022-01-18 07:47:35,412 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:35,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-01-18 07:47:35,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:35,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-01-18 07:47:35,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2022-01-18 07:47:35,413 INFO L87 Difference]: Start difference. First operand 123111 states and 590511 transitions. Second operand has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:38,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:38,199 INFO L93 Difference]: Finished difference Result 165125 states and 777741 transitions. [2022-01-18 07:47:38,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-01-18 07:47:38,215 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:47:38,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:39,112 INFO L225 Difference]: With dead ends: 165125 [2022-01-18 07:47:39,112 INFO L226 Difference]: Without dead ends: 163479 [2022-01-18 07:47:39,113 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 258 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=308, Invalid=684, Unknown=0, NotChecked=0, Total=992 [2022-01-18 07:47:39,113 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 355 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 780 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:39,113 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [355 Valid, 239 Invalid, 898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 780 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:47:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163479 states. [2022-01-18 07:47:43,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163479 to 129926. [2022-01-18 07:47:43,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129926 states, 129925 states have (on average 4.791141042909371) internal successors, (622489), 129925 states have internal predecessors, (622489), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:44,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129926 states to 129926 states and 622489 transitions. [2022-01-18 07:47:44,893 INFO L78 Accepts]: Start accepts. Automaton has 129926 states and 622489 transitions. Word has length 27 [2022-01-18 07:47:44,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:44,893 INFO L470 AbstractCegarLoop]: Abstraction has 129926 states and 622489 transitions. [2022-01-18 07:47:44,893 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.125) internal successors, (50), 15 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:44,893 INFO L276 IsEmpty]: Start isEmpty. Operand 129926 states and 622489 transitions. [2022-01-18 07:47:45,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:47:45,238 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:45,238 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] [2022-01-18 07:47:45,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-01-18 07:47:45,438 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 64 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable67 [2022-01-18 07:47:45,439 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:45,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:45,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1810365244, now seen corresponding path program 6 times [2022-01-18 07:47:45,439 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:45,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955528924] [2022-01-18 07:47:45,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:45,439 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:45,520 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:45,520 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:45,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955528924] [2022-01-18 07:47:45,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955528924] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:45,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482650584] [2022-01-18 07:47:45,521 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-01-18 07:47:45,521 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:45,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:45,522 INFO L229 MonitoredProcess]: Starting monitored process 65 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:45,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Waiting until timeout for monitored process [2022-01-18 07:47:45,552 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-01-18 07:47:45,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:47:45,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:47:45,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:45,657 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:45,657 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:45,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482650584] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:45,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:45,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 11 [2022-01-18 07:47:45,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936523206] [2022-01-18 07:47:45,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:45,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-01-18 07:47:45,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:45,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-01-18 07:47:45,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-01-18 07:47:45,823 INFO L87 Difference]: Start difference. First operand 129926 states and 622489 transitions. Second operand has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:47,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:47,850 INFO L93 Difference]: Finished difference Result 131972 states and 630349 transitions. [2022-01-18 07:47:47,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-01-18 07:47:47,851 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:47:47,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:48,777 INFO L225 Difference]: With dead ends: 131972 [2022-01-18 07:47:48,778 INFO L226 Difference]: Without dead ends: 131908 [2022-01-18 07:47:48,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 17 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=275, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:47:48,778 INFO L933 BasicCegarLoop]: 87 mSDtfsCounter, 134 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 985 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 519 SdHoareTripleChecker+Invalid, 994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 985 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:48,778 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [134 Valid, 519 Invalid, 994 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 985 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:47:48,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131908 states. [2022-01-18 07:47:52,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131908 to 130113. [2022-01-18 07:47:52,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130113 states, 130112 states have (on average 4.790910907525824) internal successors, (623355), 130112 states have internal predecessors, (623355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:53,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130113 states to 130113 states and 623355 transitions. [2022-01-18 07:47:53,267 INFO L78 Accepts]: Start accepts. Automaton has 130113 states and 623355 transitions. Word has length 27 [2022-01-18 07:47:53,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:47:53,267 INFO L470 AbstractCegarLoop]: Abstraction has 130113 states and 623355 transitions. [2022-01-18 07:47:53,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 2.75) internal successors, (33), 11 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:53,267 INFO L276 IsEmpty]: Start isEmpty. Operand 130113 states and 623355 transitions. [2022-01-18 07:47:54,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:47:54,196 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:47:54,196 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] [2022-01-18 07:47:54,235 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (65)] Forceful destruction successful, exit code 0 [2022-01-18 07:47:54,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68,65 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:54,425 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:47:54,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:47:54,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1564888438, now seen corresponding path program 7 times [2022-01-18 07:47:54,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:47:54,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38405084] [2022-01-18 07:47:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:47:54,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:47:54,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:54,505 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:47:54,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38405084] [2022-01-18 07:47:54,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38405084] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:47:54,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662107441] [2022-01-18 07:47:54,505 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-01-18 07:47:54,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:47:54,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:47:54,506 INFO L229 MonitoredProcess]: Starting monitored process 66 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:47:54,507 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Waiting until timeout for monitored process [2022-01-18 07:47:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:47:54,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:47:54,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:47:54,619 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:54,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:47:54,816 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:47:54,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662107441] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:47:54,816 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:47:54,816 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 13 [2022-01-18 07:47:54,816 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143578188] [2022-01-18 07:47:54,816 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:47:54,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:47:54,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:47:54,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:47:54,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:47:54,817 INFO L87 Difference]: Start difference. First operand 130113 states and 623355 transitions. Second operand has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:47:56,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:47:56,765 INFO L93 Difference]: Finished difference Result 131254 states and 627340 transitions. [2022-01-18 07:47:56,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-01-18 07:47:56,766 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:47:56,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:47:57,457 INFO L225 Difference]: With dead ends: 131254 [2022-01-18 07:47:57,457 INFO L226 Difference]: Without dead ends: 131126 [2022-01-18 07:47:57,457 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=482, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:47:57,457 INFO L933 BasicCegarLoop]: 46 mSDtfsCounter, 147 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 1059 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 1080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 1059 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:47:57,458 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [147 Valid, 324 Invalid, 1080 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 1059 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:47:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131126 states. [2022-01-18 07:48:00,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131126 to 130140. [2022-01-18 07:48:00,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130140 states, 130139 states have (on average 4.791038812346798) internal successors, (623501), 130139 states have internal predecessors, (623501), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:01,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130140 states to 130140 states and 623501 transitions. [2022-01-18 07:48:01,868 INFO L78 Accepts]: Start accepts. Automaton has 130140 states and 623501 transitions. Word has length 27 [2022-01-18 07:48:01,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:48:01,868 INFO L470 AbstractCegarLoop]: Abstraction has 130140 states and 623501 transitions. [2022-01-18 07:48:01,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:01,869 INFO L276 IsEmpty]: Start isEmpty. Operand 130140 states and 623501 transitions. [2022-01-18 07:48:02,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:48:02,206 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:48:02,206 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] [2022-01-18 07:48:02,222 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (66)] Forceful destruction successful, exit code 0 [2022-01-18 07:48:02,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 66 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable69 [2022-01-18 07:48:02,406 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:48:02,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:48:02,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1076671746, now seen corresponding path program 8 times [2022-01-18 07:48:02,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:48:02,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864537259] [2022-01-18 07:48:02,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:48:02,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:48:02,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:48:02,501 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:48:02,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:48:02,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864537259] [2022-01-18 07:48:02,501 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864537259] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:48:02,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616243503] [2022-01-18 07:48:02,501 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:48:02,501 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:02,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:48:02,502 INFO L229 MonitoredProcess]: Starting monitored process 67 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:48:02,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-01-18 07:48:02,531 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:48:02,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:48:02,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:48:02,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:48:02,652 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:48:02,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:48:02,887 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 07:48:02,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616243503] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:48:02,887 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:48:02,887 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 9] total 13 [2022-01-18 07:48:02,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408976680] [2022-01-18 07:48:02,887 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:48:02,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-01-18 07:48:02,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:48:02,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-01-18 07:48:02,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-01-18 07:48:02,888 INFO L87 Difference]: Start difference. First operand 130140 states and 623501 transitions. Second operand has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:05,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:48:05,127 INFO L93 Difference]: Finished difference Result 131973 states and 630100 transitions. [2022-01-18 07:48:05,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-01-18 07:48:05,127 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:48:05,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:48:05,783 INFO L225 Difference]: With dead ends: 131973 [2022-01-18 07:48:05,783 INFO L226 Difference]: Without dead ends: 131845 [2022-01-18 07:48:05,783 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 35 SyntacticMatches, 15 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2022-01-18 07:48:05,784 INFO L933 BasicCegarLoop]: 66 mSDtfsCounter, 156 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-01-18 07:48:05,784 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 490 Invalid, 1425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-01-18 07:48:06,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131845 states. [2022-01-18 07:48:09,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131845 to 130201. [2022-01-18 07:48:09,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130201 states, 130200 states have (on average 4.791328725038403) internal successors, (623831), 130200 states have internal predecessors, (623831), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:09,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130201 states to 130201 states and 623831 transitions. [2022-01-18 07:48:09,987 INFO L78 Accepts]: Start accepts. Automaton has 130201 states and 623831 transitions. Word has length 27 [2022-01-18 07:48:09,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:48:09,987 INFO L470 AbstractCegarLoop]: Abstraction has 130201 states and 623831 transitions. [2022-01-18 07:48:09,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.4285714285714284) internal successors, (34), 13 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:09,987 INFO L276 IsEmpty]: Start isEmpty. Operand 130201 states and 623831 transitions. [2022-01-18 07:48:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:48:11,008 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:48:11,009 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] [2022-01-18 07:48:11,024 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-01-18 07:48:11,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70,67 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:11,209 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:48:11,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:48:11,209 INFO L85 PathProgramCache]: Analyzing trace with hash -829638072, now seen corresponding path program 1 times [2022-01-18 07:48:11,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:48:11,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744954726] [2022-01-18 07:48:11,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:48:11,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:48:11,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:48:11,245 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:11,245 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:48:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744954726] [2022-01-18 07:48:11,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744954726] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:48:11,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048950506] [2022-01-18 07:48:11,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:48:11,246 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:11,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:48:11,247 INFO L229 MonitoredProcess]: Starting monitored process 68 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:48:11,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Waiting until timeout for monitored process [2022-01-18 07:48:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:48:11,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:48:11,273 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:48:11,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:11,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:48:11,546 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:11,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048950506] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:48:11,546 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:48:11,546 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 18 [2022-01-18 07:48:11,546 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020021643] [2022-01-18 07:48:11,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:48:11,547 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:48:11,547 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:48:11,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:48:11,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=231, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:48:11,547 INFO L87 Difference]: Start difference. First operand 130201 states and 623831 transitions. Second operand has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:13,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:48:13,612 INFO L93 Difference]: Finished difference Result 173395 states and 821303 transitions. [2022-01-18 07:48:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-01-18 07:48:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:48:13,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:48:14,516 INFO L225 Difference]: With dead ends: 173395 [2022-01-18 07:48:14,516 INFO L226 Difference]: Without dead ends: 172655 [2022-01-18 07:48:14,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=276, Invalid=536, Unknown=0, NotChecked=0, Total=812 [2022-01-18 07:48:14,516 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 262 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 662 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 662 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:48:14,517 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [262 Valid, 138 Invalid, 775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 662 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:48:14,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172655 states. [2022-01-18 07:48:18,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172655 to 148277. [2022-01-18 07:48:18,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148277 states, 148276 states have (on average 4.79727670020772) internal successors, (711321), 148276 states have internal predecessors, (711321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:20,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148277 states to 148277 states and 711321 transitions. [2022-01-18 07:48:20,077 INFO L78 Accepts]: Start accepts. Automaton has 148277 states and 711321 transitions. Word has length 27 [2022-01-18 07:48:20,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:48:20,077 INFO L470 AbstractCegarLoop]: Abstraction has 148277 states and 711321 transitions. [2022-01-18 07:48:20,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.8947368421052633) internal successors, (55), 18 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:20,078 INFO L276 IsEmpty]: Start isEmpty. Operand 148277 states and 711321 transitions. [2022-01-18 07:48:20,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:48:20,464 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:48:20,464 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] [2022-01-18 07:48:20,481 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (68)] Ended with exit code 0 [2022-01-18 07:48:20,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71,68 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:20,665 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:48:20,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:48:20,665 INFO L85 PathProgramCache]: Analyzing trace with hash -378903992, now seen corresponding path program 2 times [2022-01-18 07:48:20,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:48:20,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488916898] [2022-01-18 07:48:20,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:48:20,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:48:20,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:48:20,696 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:20,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:48:20,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488916898] [2022-01-18 07:48:20,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488916898] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:48:20,696 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1040413383] [2022-01-18 07:48:20,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-01-18 07:48:20,697 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:20,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:48:20,697 INFO L229 MonitoredProcess]: Starting monitored process 69 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:48:20,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Waiting until timeout for monitored process [2022-01-18 07:48:20,723 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-01-18 07:48:20,724 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:48:20,725 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:48:20,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:48:20,827 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:20,827 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:48:20,983 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:20,983 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1040413383] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:48:20,983 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:48:20,983 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 18 [2022-01-18 07:48:20,984 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205759559] [2022-01-18 07:48:20,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:48:20,984 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:48:20,984 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:48:20,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:48:20,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=233, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:48:20,984 INFO L87 Difference]: Start difference. First operand 148277 states and 711321 transitions. Second operand has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:24,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:48:24,111 INFO L93 Difference]: Finished difference Result 222114 states and 1043034 transitions. [2022-01-18 07:48:24,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-01-18 07:48:24,111 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:48:24,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:48:25,382 INFO L225 Difference]: With dead ends: 222114 [2022-01-18 07:48:25,383 INFO L226 Difference]: Without dead ends: 220575 [2022-01-18 07:48:25,383 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=394, Invalid=796, Unknown=0, NotChecked=0, Total=1190 [2022-01-18 07:48:25,383 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 523 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 523 SdHoareTripleChecker+Valid, 220 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:48:25,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [523 Valid, 220 Invalid, 737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:48:25,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220575 states. [2022-01-18 07:48:32,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220575 to 173515. [2022-01-18 07:48:32,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173515 states, 173514 states have (on average 4.802598061251541) internal successors, (833318), 173514 states have internal predecessors, (833318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:34,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173515 states to 173515 states and 833318 transitions. [2022-01-18 07:48:34,566 INFO L78 Accepts]: Start accepts. Automaton has 173515 states and 833318 transitions. Word has length 27 [2022-01-18 07:48:34,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:48:34,566 INFO L470 AbstractCegarLoop]: Abstraction has 173515 states and 833318 transitions. [2022-01-18 07:48:34,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.1052631578947367) internal successors, (59), 18 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:34,566 INFO L276 IsEmpty]: Start isEmpty. Operand 173515 states and 833318 transitions. [2022-01-18 07:48:35,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:48:35,873 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:48:35,873 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] [2022-01-18 07:48:35,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (69)] Forceful destruction successful, exit code 0 [2022-01-18 07:48:36,073 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable72 [2022-01-18 07:48:36,073 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:48:36,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:48:36,074 INFO L85 PathProgramCache]: Analyzing trace with hash -1388180732, now seen corresponding path program 3 times [2022-01-18 07:48:36,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:48:36,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666116360] [2022-01-18 07:48:36,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:48:36,074 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:48:36,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:48:36,110 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:36,110 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:48:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666116360] [2022-01-18 07:48:36,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666116360] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:48:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809148699] [2022-01-18 07:48:36,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:48:36,111 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:36,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:48:36,112 INFO L229 MonitoredProcess]: Starting monitored process 70 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:48:36,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Waiting until timeout for monitored process [2022-01-18 07:48:36,139 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-01-18 07:48:36,139 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:48:36,140 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:48:36,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:48:36,207 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:36,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:48:36,351 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:36,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809148699] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:48:36,351 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:48:36,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 17 [2022-01-18 07:48:36,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558020757] [2022-01-18 07:48:36,351 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:48:36,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-01-18 07:48:36,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:48:36,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-01-18 07:48:36,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=211, Unknown=0, NotChecked=0, Total=306 [2022-01-18 07:48:36,352 INFO L87 Difference]: Start difference. First operand 173515 states and 833318 transitions. Second operand has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 07:48:39,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:48:39,104 INFO L93 Difference]: Finished difference Result 243116 states and 1148392 transitions. [2022-01-18 07:48:39,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-01-18 07:48:39,104 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 27 [2022-01-18 07:48:39,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:48:41,157 INFO L225 Difference]: With dead ends: 243116 [2022-01-18 07:48:41,158 INFO L226 Difference]: Without dead ends: 240081 [2022-01-18 07:48:41,158 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 417 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=475, Invalid=1007, Unknown=0, NotChecked=0, Total=1482 [2022-01-18 07:48:41,158 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 343 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 904 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:48:41,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 294 Invalid, 904 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:48:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240081 states. [2022-01-18 07:48:48,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240081 to 190463. [2022-01-18 07:48:48,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 190463 states, 190462 states have (on average 4.793418109649169) internal successors, (912964), 190462 states have internal predecessors, (912964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:50,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 190463 states to 190463 states and 912964 transitions. [2022-01-18 07:48:50,130 INFO L78 Accepts]: Start accepts. Automaton has 190463 states and 912964 transitions. Word has length 27 [2022-01-18 07:48:50,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:48:50,130 INFO L470 AbstractCegarLoop]: Abstraction has 190463 states and 912964 transitions. [2022-01-18 07:48:50,130 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.9444444444444446) internal successors, (53), 17 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 07:48:50,130 INFO L276 IsEmpty]: Start isEmpty. Operand 190463 states and 912964 transitions. [2022-01-18 07:48:50,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:48:50,673 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:48:50,673 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:48:50,688 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (70)] Forceful destruction successful, exit code 0 [2022-01-18 07:48:50,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73,70 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:50,873 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:48:50,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:48:50,874 INFO L85 PathProgramCache]: Analyzing trace with hash 411874462, now seen corresponding path program 9 times [2022-01-18 07:48:50,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:48:50,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007607224] [2022-01-18 07:48:50,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:48:50,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:48:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:48:50,921 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:50,921 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:48:50,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007607224] [2022-01-18 07:48:50,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007607224] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:48:50,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2112386534] [2022-01-18 07:48:50,922 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-01-18 07:48:50,922 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:48:50,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:48:50,923 INFO L229 MonitoredProcess]: Starting monitored process 71 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:48:50,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Waiting until timeout for monitored process [2022-01-18 07:48:50,949 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-01-18 07:48:50,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-01-18 07:48:50,949 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2022-01-18 07:48:50,950 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:48:51,040 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:51,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:48:51,165 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:48:51,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2112386534] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:48:51,165 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:48:51,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 7] total 18 [2022-01-18 07:48:51,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769809288] [2022-01-18 07:48:51,165 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:48:51,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-01-18 07:48:51,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:48:51,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-01-18 07:48:51,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2022-01-18 07:48:51,166 INFO L87 Difference]: Start difference. First operand 190463 states and 912964 transitions. Second operand has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:48:54,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:48:54,500 INFO L93 Difference]: Finished difference Result 220325 states and 1048932 transitions. [2022-01-18 07:48:54,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-01-18 07:48:54,500 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:48:54,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:48:55,798 INFO L225 Difference]: With dead ends: 220325 [2022-01-18 07:48:55,798 INFO L226 Difference]: Without dead ends: 220155 [2022-01-18 07:48:55,798 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 444 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=557, Invalid=1165, Unknown=0, NotChecked=0, Total=1722 [2022-01-18 07:48:55,798 INFO L933 BasicCegarLoop]: 32 mSDtfsCounter, 433 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 835 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 1057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-01-18 07:48:55,798 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [433 Valid, 211 Invalid, 1057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 835 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-01-18 07:48:56,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220155 states. [2022-01-18 07:49:01,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220155 to 191203. [2022-01-18 07:49:02,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191203 states, 191202 states have (on average 4.79175427035282) internal successors, (916193), 191202 states have internal predecessors, (916193), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:49:03,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191203 states to 191203 states and 916193 transitions. [2022-01-18 07:49:03,727 INFO L78 Accepts]: Start accepts. Automaton has 191203 states and 916193 transitions. Word has length 27 [2022-01-18 07:49:03,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 07:49:03,727 INFO L470 AbstractCegarLoop]: Abstraction has 191203 states and 916193 transitions. [2022-01-18 07:49:03,727 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.9473684210526314) internal successors, (56), 18 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:49:03,727 INFO L276 IsEmpty]: Start isEmpty. Operand 191203 states and 916193 transitions. [2022-01-18 07:49:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-01-18 07:49:05,001 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 07:49:05,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 07:49:05,016 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (71)] Forceful destruction successful, exit code 0 [2022-01-18 07:49:05,201 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74,71 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:49:05,201 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 1 more)] === [2022-01-18 07:49:05,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 07:49:05,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1136534840, now seen corresponding path program 1 times [2022-01-18 07:49:05,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 07:49:05,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142908533] [2022-01-18 07:49:05,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:49:05,202 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 07:49:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:49:05,280 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:49:05,280 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 07:49:05,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142908533] [2022-01-18 07:49:05,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142908533] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 07:49:05,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163108829] [2022-01-18 07:49:05,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 07:49:05,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:49:05,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 07:49:05,281 INFO L229 MonitoredProcess]: Starting monitored process 72 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 07:49:05,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-01-18 07:49:05,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 07:49:05,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 15 conjunts are in the unsatisfiable core [2022-01-18 07:49:05,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 07:49:05,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:49:05,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 07:49:05,517 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 07:49:05,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163108829] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 07:49:05,518 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 07:49:05,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 12 [2022-01-18 07:49:05,518 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345711896] [2022-01-18 07:49:05,518 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 07:49:05,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-01-18 07:49:05,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 07:49:05,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-01-18 07:49:05,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-01-18 07:49:05,519 INFO L87 Difference]: Start difference. First operand 191203 states and 916193 transitions. Second operand has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 07:49:07,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 07:49:07,760 INFO L93 Difference]: Finished difference Result 193678 states and 925448 transitions. [2022-01-18 07:49:07,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 07:49:07,760 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.5384615384615383) internal successors, (33), 12 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-01-18 07:49:07,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 07:49:09,413 INFO L225 Difference]: With dead ends: 193678 [2022-01-18 07:49:09,413 INFO L226 Difference]: Without dead ends: 193560 [2022-01-18 07:49:09,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 38 SyntacticMatches, 13 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-01-18 07:49:09,414 INFO L933 BasicCegarLoop]: 106 mSDtfsCounter, 153 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 925 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-01-18 07:49:09,414 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [153 Valid, 693 Invalid, 938 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 925 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-01-18 07:49:09,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193560 states. Received shutdown request... [2022-01-18 07:49:11,402 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (4 of 5 remaining) [2022-01-18 07:49:11,408 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-01-18 07:49:11,417 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Forceful destruction successful, exit code 0 [2022-01-18 07:49:11,446 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 07:49:11,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75,72 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 07:49:11,602 WARN L594 AbstractCegarLoop]: Verification canceled: while executing MinimizeSevpa. [2022-01-18 07:49:11,603 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 5 remaining) [2022-01-18 07:49:11,603 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATION (2 of 5 remaining) [2022-01-18 07:49:11,603 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATION (1 of 5 remaining) [2022-01-18 07:49:11,604 INFO L764 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATION (0 of 5 remaining) [2022-01-18 07:49:11,606 INFO L732 BasicCegarLoop]: Path program histogram: [16, 12, 11, 11, 9, 8, 3, 2, 1, 1, 1, 1] [2022-01-18 07:49:11,607 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-01-18 07:49:11,607 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 07:49:11,609 INFO L202 PluginConnector]: Adding new model hard1.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 07:49:11 BasicIcfg [2022-01-18 07:49:11,609 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 07:49:11,609 INFO L158 Benchmark]: Toolchain (without parser) took 619523.44ms. Allocated memory was 335.5MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 296.3MB in the beginning and 9.6GB in the end (delta: -9.3GB). Peak memory consumption was 6.5GB. Max. memory is 16.0GB. [2022-01-18 07:49:11,609 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.13ms. Allocated memory is still 335.5MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:49:11,609 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.98ms. Allocated memory is still 335.5MB. Free memory was 296.2MB in the beginning and 294.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:49:11,610 INFO L158 Benchmark]: Boogie Preprocessor took 12.74ms. Allocated memory is still 335.5MB. Free memory was 294.7MB in the beginning and 293.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 07:49:11,610 INFO L158 Benchmark]: RCFGBuilder took 232.24ms. Allocated memory is still 335.5MB. Free memory was 293.7MB in the beginning and 283.9MB in the end (delta: 9.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2022-01-18 07:49:11,610 INFO L158 Benchmark]: TraceAbstraction took 619249.90ms. Allocated memory was 335.5MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 283.4MB in the beginning and 9.6GB in the end (delta: -9.3GB). Peak memory consumption was 6.5GB. Max. memory is 16.0GB. [2022-01-18 07:49:11,610 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.13ms. Allocated memory is still 335.5MB. Free memory is still 297.4MB. There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 23.98ms. Allocated memory is still 335.5MB. Free memory was 296.2MB in the beginning and 294.7MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 12.74ms. Allocated memory is still 335.5MB. Free memory was 294.7MB in the beginning and 293.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 232.24ms. Allocated memory is still 335.5MB. Free memory was 293.7MB in the beginning and 283.9MB in the end (delta: 9.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 619249.90ms. Allocated memory was 335.5MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 283.4MB in the beginning and 9.6GB in the end (delta: -9.3GB). Peak memory consumption was 6.5GB. 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: 72]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 63]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 65]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - TimeoutResultAtElement [Line: 64]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing MinimizeSevpa. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 50 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 619.1s, OverallIterations: 76, TraceHistogramMax: 3, PathProgramHistogramMax: 16, EmptinessCheckTime: 28.9s, AutomataDifference: 217.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18660 SdHoareTripleChecker+Valid, 23.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18660 mSDsluCounter, 15377 SdHoareTripleChecker+Invalid, 19.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23878 mSDsCounter, 6290 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 43887 IncrementalHoareTripleChecker+Invalid, 50177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6290 mSolverCounterUnsat, 2609 mSDtfsCounter, 43887 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4820 GetRequests, 2666 SyntacticMatches, 338 SemanticMatches, 1816 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20756 ImplicationChecksByTransitivity, 28.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=284082occurred in iteration=52, InterpolantAutomatonStates: 1753, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 328.5s AutomataMinimizationTime, 76 MinimizatonAttempts, 1783279 StatesRemovedByMinimization, 75 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 25.9s InterpolantComputationTime, 3631 NumberOfCodeBlocks, 3631 NumberOfCodeBlocksAsserted, 211 NumberOfCheckSat, 5126 ConstructedInterpolants, 0 QuantifiedInterpolants, 36797 SizeOfPredicates, 147 NumberOfNonLiveVariables, 5006 ConjunctsInSsa, 689 ConjunctsInUnsatCore, 216 InterpolantComputations, 13 PerfectInterpolantSequences, 240/823 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