/usr/bin/java -Xmx8000000000 -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-POR-NewStatesSleep-NoLbe-Random521.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.1-8a14012e553caa636f65c1137831746b6d9875cd-8a14012 [2021-08-07 09:12:22,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-07 09:12:22,983 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-07 09:12:23,014 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-08-07 09:12:23,083 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-POR-NewStatesSleep-NoLbe-Random521.epf [2021-08-07 09:12:23,113 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-07 09:12:23,113 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-07 09:12:23,114 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-07 09:12:23,114 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-07 09:12:23,116 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-07 09:12:23,116 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-07 09:12:23,116 INFO L138 SettingsManager]: * Use SBE=true [2021-08-07 09:12:23,117 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-07 09:12:23,117 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-07 09:12:23,117 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-07 09:12:23,118 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-07 09:12:23,119 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-07 09:12:23,119 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-07 09:12:23,119 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-07 09:12:23,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-08-07 09:12:23,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-07 09:12:23,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-07 09:12:23,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * DFS Order used in POR=RANDOM [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-08-07 09:12:23,120 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PARTIAL_ORDER_FA [2021-08-07 09:12:23,121 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-07 09:12:23,121 INFO L138 SettingsManager]: * Partial Order Reduction in concurrent analysis=SLEEP_NEW_STATES [2021-08-07 09:12:23,121 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-07 09:12:23,121 INFO L138 SettingsManager]: * Random seed used by POR DFS order=521 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-08-07 09:12:23,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-07 09:12:23,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-07 09:12:23,411 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-07 09:12:23,412 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2021-08-07 09:12:23,413 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2021-08-07 09:12:23,414 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl [2021-08-07 09:12:23,414 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/weaver-benchmarks/generated/popl20-more/dec-subseq.wvr.bpl' [2021-08-07 09:12:23,436 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-07 09:12:23,438 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-08-07 09:12:23,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-07 09:12:23,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-07 09:12:23,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-07 09:12:23,449 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,456 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-07 09:12:23,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-07 09:12:23,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-07 09:12:23,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-07 09:12:23,469 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,470 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,470 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,473 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,478 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-07 09:12:23,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-07 09:12:23,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-07 09:12:23,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-07 09:12:23,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/1) ... [2021-08-07 09:12:23,486 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-07 09:12:23,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 09:12:23,502 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) [2021-08-07 09:12:23,506 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 [2021-08-07 09:12:23,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread1 given in one single declaration [2021-08-07 09:12:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-08-07 09:12:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-08-07 09:12:23,541 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread2 given in one single declaration [2021-08-07 09:12:23,541 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-08-07 09:12:23,541 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-08-07 09:12:23,542 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2021-08-07 09:12:23,542 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-07 09:12:23,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-07 09:12:23,544 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-08-07 09:12:23,691 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-07 09:12:23,691 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-08-07 09:12:23,693 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 09:12:23 BoogieIcfgContainer [2021-08-07 09:12:23,693 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-07 09:12:23,694 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-07 09:12:23,694 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-07 09:12:23,696 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-07 09:12:23,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 07.08 09:12:23" (1/2) ... [2021-08-07 09:12:23,697 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@de947c6 and model type dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.08 09:12:23, skipping insertion in model container [2021-08-07 09:12:23,697 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.08 09:12:23" (2/2) ... [2021-08-07 09:12:23,698 INFO L111 eAbstractionObserver]: Analyzing ICFG dec-subseq.wvr.bpl [2021-08-07 09:12:23,701 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-08-07 09:12:23,702 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-07 09:12:23,702 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-07 09:12:23,702 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-08-07 09:12:23,752 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-08-07 09:12:23,805 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 [2021-08-07 09:12:23,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 09:12:23,806 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (exit command is (exit), workingDir is null) [2021-08-07 09:12:23,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Waiting until timeout for monitored process [2021-08-07 09:12:23,829 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == ULTIMATE.start ======== [2021-08-07 09:12:23,836 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, mConcurrency=PARTIAL_ORDER_FA, 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 [2021-08-07 09:12:23,836 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-08-07 09:12:23,885 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:23,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:23,894 INFO L82 PathProgramCache]: Analyzing trace with hash -1238703417, now seen corresponding path program 1 times [2021-08-07 09:12:23,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:23,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623967362] [2021-08-07 09:12:23,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:23,903 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:23,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:24,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:24,048 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:24,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623967362] [2021-08-07 09:12:24,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623967362] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 09:12:24,050 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-07 09:12:24,050 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-07 09:12:24,051 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071715715] [2021-08-07 09:12:24,060 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-07 09:12:24,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:24,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-07 09:12:24,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-07 09:12:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:24,071 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:24,071 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 09:12:24,072 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:24,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:24,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-07 09:12:24,093 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:24,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1018601180, now seen corresponding path program 1 times [2021-08-07 09:12:24,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:24,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084535213] [2021-08-07 09:12:24,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:24,096 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:24,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:24,187 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:24,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:24,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084535213] [2021-08-07 09:12:24,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084535213] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 09:12:24,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-07 09:12:24,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-07 09:12:24,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621216965] [2021-08-07 09:12:24,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-07 09:12:24,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:24,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-07 09:12:24,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-07 09:12:24,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:24,193 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:24,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 09:12:24,193 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:24,194 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:24,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:24,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-07 09:12:24,236 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:24,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:24,236 INFO L82 PathProgramCache]: Analyzing trace with hash 2055084062, now seen corresponding path program 1 times [2021-08-07 09:12:24,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:24,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240995951] [2021-08-07 09:12:24,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:24,236 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:24,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:24,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-08-07 09:12:24,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:24,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240995951] [2021-08-07 09:12:24,264 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240995951] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 09:12:24,264 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-07 09:12:24,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-07 09:12:24,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381097820] [2021-08-07 09:12:24,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-07 09:12:24,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:24,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-07 09:12:24,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-07 09:12:24,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:24,265 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:24,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.666666666666667) internal successors, (23), 3 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) [2021-08-07 09:12:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:24,265 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:24,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:24,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:24,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-07 09:12:24,343 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:24,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:24,343 INFO L82 PathProgramCache]: Analyzing trace with hash -255381350, now seen corresponding path program 2 times [2021-08-07 09:12:24,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:24,343 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85853977] [2021-08-07 09:12:24,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:24,344 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:24,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:24,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:24,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85853977] [2021-08-07 09:12:24,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85853977] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:24,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897607691] [2021-08-07 09:12:24,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-07 09:12:24,585 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-07 09:12:24,585 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 09:12:24,597 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) [2021-08-07 09:12:24,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-08-07 09:12:24,639 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-07 09:12:24,640 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-07 09:12:24,641 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-07 09:12:24,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-07 09:12:24,881 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-08-07 09:12:24,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-08-07 09:12:25,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:25,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897607691] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:25,017 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-07 09:12:25,017 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2021-08-07 09:12:25,017 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190158687] [2021-08-07 09:12:25,018 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-07 09:12:25,018 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:25,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-07 09:12:25,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-08-07 09:12:25,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:25,019 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:25,019 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) [2021-08-07 09:12:25,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:25,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,019 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:25,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:25,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-08-07 09:12:25,366 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,SelfDestructingSolverStorable3 [2021-08-07 09:12:25,367 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash -672798755, now seen corresponding path program 3 times [2021-08-07 09:12:25,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:25,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1083374291] [2021-08-07 09:12:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:25,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:25,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:25,411 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:25,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1083374291] [2021-08-07 09:12:25,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1083374291] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-07 09:12:25,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-07 09:12:25,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-07 09:12:25,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1125996944] [2021-08-07 09:12:25,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-07 09:12:25,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:25,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-07 09:12:25,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-08-07 09:12:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:25,413 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:25,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.4) internal successors, (27), 4 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 09:12:25,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:25,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:25,413 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:25,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:25,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:25,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-07 09:12:25,455 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:25,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:25,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1101374272, now seen corresponding path program 4 times [2021-08-07 09:12:25,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:25,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667186730] [2021-08-07 09:12:25,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:25,456 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:25,538 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 24 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-08-07 09:12:25,538 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:25,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667186730] [2021-08-07 09:12:25,538 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667186730] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:25,538 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [378301956] [2021-08-07 09:12:25,539 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-08-07 09:12:25,539 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-07 09:12:25,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 09:12:25,540 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) [2021-08-07 09:12:25,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-08-07 09:12:25,599 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-08-07 09:12:25,599 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-07 09:12:25,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-07 09:12:25,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-07 09:12:25,908 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-07 09:12:25,908 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [378301956] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:25,909 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-07 09:12:25,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2021-08-07 09:12:25,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124816607] [2021-08-07 09:12:25,909 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-07 09:12:25,909 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:25,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-07 09:12:25,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-07 09:12:25,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:25,910 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:25,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 09:12:25,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:25,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:25,910 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:25,911 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:25,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:25,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-07 09:12:25,966 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-08-07 09:12:26,160 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 [2021-08-07 09:12:26,160 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:26,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:26,161 INFO L82 PathProgramCache]: Analyzing trace with hash -195401411, now seen corresponding path program 5 times [2021-08-07 09:12:26,161 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:26,161 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623196295] [2021-08-07 09:12:26,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:26,161 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:26,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:26,554 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:26,554 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:26,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623196295] [2021-08-07 09:12:26,554 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623196295] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:26,554 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027517607] [2021-08-07 09:12:26,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-08-07 09:12:26,554 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-07 09:12:26,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 09:12:26,555 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) [2021-08-07 09:12:26,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-08-07 09:12:26,638 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-08-07 09:12:26,638 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-07 09:12:26,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 22 conjunts are in the unsatisfiable core [2021-08-07 09:12:26,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-07 09:12:27,160 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-07 09:12:27,160 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-08-07 09:12:27,208 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-08-07 09:12:27,208 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 10 [2021-08-07 09:12:27,279 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:27,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027517607] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:27,280 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-07 09:12:27,280 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14] total 26 [2021-08-07 09:12:27,280 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750356993] [2021-08-07 09:12:27,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-08-07 09:12:27,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:27,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-08-07 09:12:27,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=563, Unknown=0, NotChecked=0, Total=702 [2021-08-07 09:12:27,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:27,289 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:27,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 1.962962962962963) internal successors, (53), 26 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) [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-07 09:12:27,290 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:27,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-07 09:12:27,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-08-07 09:12:27,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-08-07 09:12:27,904 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 [2021-08-07 09:12:27,905 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-08-07 09:12:27,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-07 09:12:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash -509003782, now seen corresponding path program 6 times [2021-08-07 09:12:27,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-07 09:12:27,905 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947921811] [2021-08-07 09:12:27,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-07 09:12:27,905 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-07 09:12:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-07 09:12:28,452 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-08-07 09:12:28,453 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-07 09:12:28,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947921811] [2021-08-07 09:12:28,453 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947921811] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:28,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713667904] [2021-08-07 09:12:28,453 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-08-07 09:12:28,453 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-07 09:12:28,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-07 09:12:28,465 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) [2021-08-07 09:12:28,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-08-07 09:12:28,600 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-08-07 09:12:28,601 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-07 09:12:28,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 36 conjunts are in the unsatisfiable core [2021-08-07 09:12:28,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-07 09:12:29,792 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-08-07 09:12:29,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 57 treesize of output 67 [2021-08-07 09:12:29,951 INFO L354 Elim1Store]: treesize reduction 73, result has 30.5 percent of original size [2021-08-07 09:12:29,951 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 51 treesize of output 62 [2021-08-07 09:12:30,285 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-07 09:12:30,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713667904] provided 0 perfect and 1 imperfect interpolant sequences [2021-08-07 09:12:30,286 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-07 09:12:30,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 21] total 34 [2021-08-07 09:12:30,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971270640] [2021-08-07 09:12:30,286 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-08-07 09:12:30,286 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-07 09:12:30,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-08-07 09:12:30,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1003, Unknown=0, NotChecked=0, Total=1190 [2021-08-07 09:12:30,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:30,287 INFO L470 AbstractCegarLoop]: Abstraction has currently 0 states, but on-demand construction may add more states [2021-08-07 09:12:30,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 2.057142857142857) internal successors, (72), 34 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 9 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 6 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 16 states. [2021-08-07 09:12:30,288 INFO L154 InterpolantAutomaton]: Switched to On-DemandConstruction mode: deterministic interpolant automaton has 2 states. [2021-08-07 09:12:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:32,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-07 09:12:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-07 09:12:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-07 09:12:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-07 09:12:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-07 09:12:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-08-07 09:12:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2021-08-07 09:12:32,771 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT [2021-08-07 09:12:32,771 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION [2021-08-07 09:12:32,771 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION [2021-08-07 09:12:32,790 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-08-07 09:12:32,984 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 [2021-08-07 09:12:32,990 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-08-07 09:12:32,990 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-07 09:12:32,991 INFO L202 PluginConnector]: Adding new model dec-subseq.wvr.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.08 09:12:32 BasicIcfg [2021-08-07 09:12:32,991 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-07 09:12:32,992 INFO L168 Benchmark]: Toolchain (without parser) took 9553.55 ms. Allocated memory was 200.3 MB in the beginning and 350.2 MB in the end (delta: 149.9 MB). Free memory was 180.2 MB in the beginning and 230.8 MB in the end (delta: -50.6 MB). Peak memory consumption was 99.4 MB. Max. memory is 8.0 GB. [2021-08-07 09:12:32,992 INFO L168 Benchmark]: Boogie PL CUP Parser took 0.10 ms. Allocated memory is still 200.3 MB. Free memory is still 181.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-08-07 09:12:32,992 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.47 ms. Allocated memory is still 200.3 MB. Free memory was 180.2 MB in the beginning and 178.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-07 09:12:32,992 INFO L168 Benchmark]: Boogie Preprocessor took 15.31 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 177.7 MB in the end (delta: 942.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-08-07 09:12:32,992 INFO L168 Benchmark]: RCFGBuilder took 213.24 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 164.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2021-08-07 09:12:32,992 INFO L168 Benchmark]: TraceAbstraction took 9297.26 ms. Allocated memory was 200.3 MB in the beginning and 350.2 MB in the end (delta: 149.9 MB). Free memory was 164.2 MB in the beginning and 230.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. [2021-08-07 09:12:32,993 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 0.10 ms. Allocated memory is still 200.3 MB. Free memory is still 181.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 22.47 ms. Allocated memory is still 200.3 MB. Free memory was 180.2 MB in the beginning and 178.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 15.31 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 177.7 MB in the end (delta: 942.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 213.24 ms. Allocated memory is still 200.3 MB. Free memory was 177.6 MB in the beginning and 164.7 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 9297.26 ms. Allocated memory was 200.3 MB in the beginning and 350.2 MB in the end (delta: 149.9 MB). Free memory was 164.2 MB in the beginning and 230.8 MB in the end (delta: -66.7 MB). Peak memory consumption was 83.7 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Independence relation benchmarks ThreadSeparatingIndependenceRelation.Independence Queries: [ total: 1604, positive: 1264, positive conditional: 1264, positive unconditional: 0, negative: 340, negative conditional: 340, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ThreadSeparatingIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1289, positive: 1264, positive conditional: 1264, positive unconditional: 0, negative: 25, negative conditional: 25, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1289, positive: 1264, positive conditional: 1264, positive unconditional: 0, negative: 25, negative conditional: 25, negative unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1569, positive: 1264, positive conditional: 1259, positive unconditional: 5, negative: 305, negative conditional: 280, negative unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1569, positive: 1264, positive conditional: 967, positive unconditional: 297, negative: 305, negative conditional: 160, negative unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1569, positive: 1264, positive conditional: 967, positive unconditional: 297, negative: 305, negative conditional: 160, negative unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 280, positive: 217, positive conditional: 160, positive unconditional: 57, negative: 63, negative conditional: 58, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 280, positive: 191, positive conditional: 0, positive unconditional: 191, negative: 89, negative conditional: 0, negative unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 89, positive: 26, positive conditional: 25, positive unconditional: 1, negative: 63, negative conditional: 58, negative unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 188, positive: 45, positive conditional: 43, positive unconditional: 2, negative: 143, negative conditional: 117, negative unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1569, positive: 1047, positive conditional: 807, positive unconditional: 240, negative: 242, negative conditional: 102, negative unconditional: 140, unknown: 280, unknown conditional: 218, unknown unconditional: 62] , Statistics on independence cache: Total cache size (in pairs): 280, Positive cache size: 217, Positive conditional cache size: 160, Positive unconditional cache size: 57, Negative cache size: 63, Negative conditional cache size: 58, Negative unconditional cache size: 5, Eliminated conditions: 412, Maximal queried relation: 8, Independence queries for same thread: 315 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 62]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data for errors in thread instance: ULTIMATE.start with 1 thread instances CFG has 5 procedures, 41 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 9186.9ms, OverallIterations: 8, TraceHistogramMax: 0, EmptinessCheckTime: 0.0ms, AutomataDifference: 0.0ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 17.3ms, PartialOrderReductionTime: 3257.3ms, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=0occurred in iteration=0, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 51.0ms SsaConstructionTime, 133.8ms SatisfiabilityAnalysisTime, 4422.6ms InterpolantComputationTime, 366 NumberOfCodeBlocks, 366 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 354 ConstructedInterpolants, 14 QuantifiedInterpolants, 2845 SizeOfPredicates, 32 NumberOfNonLiveVariables, 301 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 102/204 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-08-07 09:12:33,015 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:1000 (2)] Forceful destruction successful, exit code 0 [2021-08-07 09:12:33,236 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...