/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-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.abstract-por-f0ea240 [2022-02-10 23:58:42,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-10 23:58:42,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-10 23:58:42,685 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-02-10 23:58:42,740 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 [2022-02-10 23:58:42,762 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-10 23:58:42,763 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-10 23:58:42,763 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-02-10 23:58:42,763 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-02-10 23:58:42,764 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-10 23:58:42,764 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-10 23:58:42,764 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-10 23:58:42,764 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-10 23:58:42,764 INFO L138 SettingsManager]: * Use SBE=true [2022-02-10 23:58:42,765 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-10 23:58:42,765 INFO L138 SettingsManager]: * sizeof long=4 [2022-02-10 23:58:42,765 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-10 23:58:42,765 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-02-10 23:58:42,765 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-10 23:58:42,765 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * sizeof long double=12 [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-10 23:58:42,766 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-10 23:58:42,766 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:42,767 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-10 23:58:42,767 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-10 23:58:42,767 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-10 23:58:42,767 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-10 23:58:42,767 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-10 23:58:42,767 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-02-10 23:58:42,767 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-10 23:58:42,767 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-02-10 23:58:42,921 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-10 23:58:42,934 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-10 23:58:42,935 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-10 23:58:42,936 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-02-10 23:58:42,937 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-02-10 23:58:42,937 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl [2022-02-10 23:58:42,938 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl' [2022-02-10 23:58:42,951 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-10 23:58:42,952 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-02-10 23:58:42,955 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:42,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-02-10 23:58:42,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-02-10 23:58:42,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,972 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,978 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-02-10 23:58:42,979 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-02-10 23:58:42,980 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-10 23:58:42,980 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-10 23:58:42,981 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-10 23:58:42,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,987 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-10 23:58:42,990 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-10 23:58:42,990 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-10 23:58:42,990 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-10 23:58:42,991 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/1) ... [2022-02-10 23:58:42,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-10 23:58:43,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:43,009 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) [2022-02-10 23:58:43,015 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 [2022-02-10 23:58:43,037 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-02-10 23:58:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-10 23:58:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-10 23:58:43,037 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-02-10 23:58:43,037 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-02-10 23:58:43,037 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-02-10 23:58:43,038 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-02-10 23:58:43,068 INFO L234 CfgBuilder]: Building ICFG [2022-02-10 23:58:43,069 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-10 23:58:43,120 INFO L275 CfgBuilder]: Performing block encoding [2022-02-10 23:58:43,125 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-10 23:58:43,125 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-10 23:58:43,126 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:43 BoogieIcfgContainer [2022-02-10 23:58:43,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-10 23:58:43,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-10 23:58:43,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-10 23:58:43,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-10 23:58:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 10.02 11:58:42" (1/2) ... [2022-02-10 23:58:43,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41cbfbe6 and model type fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.02 11:58:43, skipping insertion in model container [2022-02-10 23:58:43,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.02 11:58:43" (2/2) ... [2022-02-10 23:58:43,150 INFO L112 eAbstractionObserver]: Analyzing ICFG fork_loop_unsafe.bpl [2022-02-10 23:58:43,153 WARN L154 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-02-10 23:58:43,153 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-10 23:58:43,153 INFO L168 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-10 23:58:43,153 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-02-10 23:58:43,171 WARN L322 ript$VariableManager]: TermVariable threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,172 WARN L322 ript$VariableManager]: TermVariable threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,172 WARN L322 ript$VariableManager]: TermVariable threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,173 WARN L322 ript$VariableManager]: TermVariable threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,176 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:58:43,225 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:43,232 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 [2022-02-10 23:58:43,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-02-10 23:58:43,241 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2022-02-10 23:58:43,254 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,256 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:58:43,260 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,261 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:58:43,261 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 23:58:43,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,266 INFO L85 PathProgramCache]: Analyzing trace with hash 41167902, now seen corresponding path program 1 times [2022-02-10 23:58:43,276 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,276 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123278467] [2022-02-10 23:58:43,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:43,336 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:58:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:43,348 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:58:43,349 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:58:43,350 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-02-10 23:58:43,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-02-10 23:58:43,351 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-02-10 23:58:43,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-10 23:58:43,354 INFO L733 BasicCegarLoop]: Path program histogram: [1] [2022-02-10 23:58:43,355 WARN L239 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 23:58:43,355 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-02-10 23:58:43,359 WARN L322 ript$VariableManager]: TermVariable threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,359 WARN L322 ript$VariableManager]: TermVariable threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,360 WARN L322 ript$VariableManager]: TermVariable threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,360 WARN L322 ript$VariableManager]: TermVariable threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,360 WARN L322 ript$VariableManager]: TermVariable threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,361 WARN L322 ript$VariableManager]: TermVariable threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,361 WARN L322 ript$VariableManager]: TermVariable threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,361 WARN L322 ript$VariableManager]: TermVariable threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,362 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:58:43,364 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:43,365 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 [2022-02-10 23:58:43,365 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-02-10 23:58:43,365 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2022-02-10 23:58:43,378 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:58:43,379 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,379 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:58:43,379 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 23:58:43,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,379 INFO L85 PathProgramCache]: Analyzing trace with hash 55486442, now seen corresponding path program 1 times [2022-02-10 23:58:43,380 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,380 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318467177] [2022-02-10 23:58:43,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,459 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:43,459 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318467177] [2022-02-10 23:58:43,459 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318467177] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:43,459 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:43,459 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 23:58:43,459 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284196387] [2022-02-10 23:58:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:43,462 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:43,462 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:43,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:43,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:43,491 INFO L87 Difference]: Start difference. First operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 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 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:43,591 INFO L93 Difference]: Finished difference Result 105 states and 232 transitions. [2022-02-10 23:58:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:43,593 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:58:43,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:43,613 INFO L225 Difference]: With dead ends: 105 [2022-02-10 23:58:43,613 INFO L226 Difference]: Without dead ends: 103 [2022-02-10 23:58:43,614 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:43,616 INFO L934 BasicCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:43,617 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:43,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-02-10 23:58:43,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-02-10 23:58:43,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 96 states have (on average 2.3854166666666665) internal successors, (229), 102 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 229 transitions. [2022-02-10 23:58:43,670 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 229 transitions. Word has length 5 [2022-02-10 23:58:43,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:43,670 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 229 transitions. [2022-02-10 23:58:43,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,680 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 229 transitions. [2022-02-10 23:58:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-10 23:58:43,681 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,681 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-02-10 23:58:43,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-10 23:58:43,681 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-02-10 23:58:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1782753763, now seen corresponding path program 1 times [2022-02-10 23:58:43,682 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,682 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962696520] [2022-02-10 23:58:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:43,687 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:58:43,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:43,692 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:58:43,692 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:58:43,693 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-02-10 23:58:43,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-02-10 23:58:43,693 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-02-10 23:58:43,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-02-10 23:58:43,694 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-02-10 23:58:43,694 INFO L733 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-10 23:58:43,694 WARN L239 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 23:58:43,694 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-02-10 23:58:43,701 WARN L322 ript$VariableManager]: TermVariable threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,702 WARN L322 ript$VariableManager]: TermVariable threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,702 WARN L322 ript$VariableManager]: TermVariable threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,702 WARN L322 ript$VariableManager]: TermVariable threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,703 WARN L322 ript$VariableManager]: TermVariable threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,703 WARN L322 ript$VariableManager]: TermVariable threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,703 WARN L322 ript$VariableManager]: TermVariable threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,703 WARN L322 ript$VariableManager]: TermVariable threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,704 WARN L322 ript$VariableManager]: TermVariable threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,704 WARN L322 ript$VariableManager]: TermVariable threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,704 WARN L322 ript$VariableManager]: TermVariable threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,704 WARN L322 ript$VariableManager]: TermVariable threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:43,706 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:58:43,707 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:43,708 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 [2022-02-10 23:58:43,708 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-02-10 23:58:43,708 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 61 flow [2022-02-10 23:58:43,745 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,747 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:58:43,747 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,747 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:58:43,747 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:43,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,748 INFO L85 PathProgramCache]: Analyzing trace with hash 74576642, now seen corresponding path program 1 times [2022-02-10 23:58:43,748 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,748 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829273365] [2022-02-10 23:58:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,789 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:43,790 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829273365] [2022-02-10 23:58:43,790 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829273365] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:43,790 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:43,790 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 23:58:43,790 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089636034] [2022-02-10 23:58:43,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:43,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:43,792 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:43,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:43,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:43,795 INFO L87 Difference]: Start difference. First operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 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 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:43,887 INFO L93 Difference]: Finished difference Result 569 states and 1722 transitions. [2022-02-10 23:58:43,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:43,887 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:58:43,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:43,896 INFO L225 Difference]: With dead ends: 569 [2022-02-10 23:58:43,896 INFO L226 Difference]: Without dead ends: 567 [2022-02-10 23:58:43,896 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:43,897 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:43,898 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 33 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:43,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-02-10 23:58:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-02-10 23:58:43,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 549 states have (on average 3.1311475409836067) internal successors, (1719), 566 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1719 transitions. [2022-02-10 23:58:43,951 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1719 transitions. Word has length 5 [2022-02-10 23:58:43,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:43,951 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1719 transitions. [2022-02-10 23:58:43,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:43,952 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1719 transitions. [2022-02-10 23:58:43,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-10 23:58:43,952 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:43,952 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:43,952 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-02-10 23:58:43,952 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:43,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:43,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1346641804, now seen corresponding path program 1 times [2022-02-10 23:58:43,953 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:43,953 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168097710] [2022-02-10 23:58:43,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:43,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:43,993 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:43,993 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:43,993 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168097710] [2022-02-10 23:58:43,993 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168097710] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:43,994 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:43,994 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:43,994 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488406073] [2022-02-10 23:58:43,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:43,994 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:43,994 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:43,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:43,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:43,995 INFO L87 Difference]: Start difference. First operand 567 states and 1719 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:44,136 INFO L93 Difference]: Finished difference Result 1180 states and 3596 transitions. [2022-02-10 23:58:44,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:58:44,137 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-10 23:58:44,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:44,144 INFO L225 Difference]: With dead ends: 1180 [2022-02-10 23:58:44,144 INFO L226 Difference]: Without dead ends: 1180 [2022-02-10 23:58:44,145 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:44,147 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:44,152 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 63 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:44,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-02-10 23:58:44,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 560. [2022-02-10 23:58:44,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 542 states have (on average 3.1273062730627306) internal successors, (1695), 559 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1695 transitions. [2022-02-10 23:58:44,185 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1695 transitions. Word has length 7 [2022-02-10 23:58:44,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:44,185 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1695 transitions. [2022-02-10 23:58:44,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,185 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1695 transitions. [2022-02-10 23:58:44,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:44,186 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:44,186 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:44,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-02-10 23:58:44,186 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:44,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:44,187 INFO L85 PathProgramCache]: Analyzing trace with hash 1214332695, now seen corresponding path program 1 times [2022-02-10 23:58:44,187 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:44,189 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199564259] [2022-02-10 23:58:44,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:44,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:44,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:44,232 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:44,233 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:44,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199564259] [2022-02-10 23:58:44,233 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199564259] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:44,233 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295949418] [2022-02-10 23:58:44,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:44,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:44,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:44,235 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) [2022-02-10 23:58:44,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-02-10 23:58:44,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:44,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:44,258 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:44,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:44,368 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:44,411 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295949418] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:44,411 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:44,411 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-02-10 23:58:44,411 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915937613] [2022-02-10 23:58:44,411 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:44,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:58:44,412 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:44,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:58:44,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:58:44,412 INFO L87 Difference]: Start difference. First operand 560 states and 1695 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:44,477 INFO L93 Difference]: Finished difference Result 636 states and 1874 transitions. [2022-02-10 23:58:44,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:44,478 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:44,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:44,480 INFO L225 Difference]: With dead ends: 636 [2022-02-10 23:58:44,481 INFO L226 Difference]: Without dead ends: 632 [2022-02-10 23:58:44,481 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:44,484 INFO L934 BasicCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:44,485 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 70 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:44,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-02-10 23:58:44,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 512. [2022-02-10 23:58:44,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 3.1048387096774195) internal successors, (1540), 511 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1540 transitions. [2022-02-10 23:58:44,541 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1540 transitions. Word has length 8 [2022-02-10 23:58:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:44,542 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1540 transitions. [2022-02-10 23:58:44,543 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1540 transitions. [2022-02-10 23:58:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:44,544 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:44,544 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:44,562 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-02-10 23:58:44,759 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-02-10 23:58:44,760 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:44,760 INFO L85 PathProgramCache]: Analyzing trace with hash 1214332691, now seen corresponding path program 1 times [2022-02-10 23:58:44,760 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:44,760 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609378785] [2022-02-10 23:58:44,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:44,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:44,803 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:44,803 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:44,803 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609378785] [2022-02-10 23:58:44,803 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [609378785] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:44,803 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:44,803 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:44,804 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803663142] [2022-02-10 23:58:44,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:44,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:44,804 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:44,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:44,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:44,804 INFO L87 Difference]: Start difference. First operand 512 states and 1540 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:44,900 INFO L93 Difference]: Finished difference Result 1501 states and 4509 transitions. [2022-02-10 23:58:44,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:58:44,901 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:44,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:44,908 INFO L225 Difference]: With dead ends: 1501 [2022-02-10 23:58:44,908 INFO L226 Difference]: Without dead ends: 1492 [2022-02-10 23:58:44,908 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:44,909 INFO L934 BasicCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:44,909 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 56 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:44,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-02-10 23:58:44,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 551. [2022-02-10 23:58:44,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 535 states have (on average 3.100934579439252) internal successors, (1659), 550 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1659 transitions. [2022-02-10 23:58:44,928 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1659 transitions. Word has length 8 [2022-02-10 23:58:44,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:44,928 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 1659 transitions. [2022-02-10 23:58:44,928 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1659 transitions. [2022-02-10 23:58:44,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:44,929 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:44,929 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:44,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-02-10 23:58:44,930 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:44,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:44,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1203607931, now seen corresponding path program 2 times [2022-02-10 23:58:44,931 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:44,931 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628110779] [2022-02-10 23:58:44,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:44,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:44,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:44,967 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:44,968 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:44,968 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628110779] [2022-02-10 23:58:44,968 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628110779] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:44,968 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:44,968 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:44,968 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047840928] [2022-02-10 23:58:44,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:44,968 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:44,968 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:44,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:44,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:44,969 INFO L87 Difference]: Start difference. First operand 551 states and 1659 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:45,114 INFO L93 Difference]: Finished difference Result 1316 states and 3968 transitions. [2022-02-10 23:58:45,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:58:45,115 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:45,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:45,120 INFO L225 Difference]: With dead ends: 1316 [2022-02-10 23:58:45,120 INFO L226 Difference]: Without dead ends: 1307 [2022-02-10 23:58:45,121 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:58:45,121 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 103 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:45,121 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 64 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:45,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-02-10 23:58:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 548. [2022-02-10 23:58:45,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 3.1090225563909772) internal successors, (1654), 547 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1654 transitions. [2022-02-10 23:58:45,138 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1654 transitions. Word has length 8 [2022-02-10 23:58:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:45,138 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1654 transitions. [2022-02-10 23:58:45,138 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1654 transitions. [2022-02-10 23:58:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:45,139 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:45,139 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:45,139 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-02-10 23:58:45,139 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:45,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:45,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1203780911, now seen corresponding path program 3 times [2022-02-10 23:58:45,139 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:45,140 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064024459] [2022-02-10 23:58:45,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:45,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:45,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:45,171 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:45,171 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064024459] [2022-02-10 23:58:45,171 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064024459] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:45,171 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:45,171 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:58:45,171 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212980784] [2022-02-10 23:58:45,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:45,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 23:58:45,172 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:45,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 23:58:45,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:45,172 INFO L87 Difference]: Start difference. First operand 548 states and 1654 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:45,294 INFO L93 Difference]: Finished difference Result 1131 states and 3400 transitions. [2022-02-10 23:58:45,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:58:45,295 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:45,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:45,299 INFO L225 Difference]: With dead ends: 1131 [2022-02-10 23:58:45,299 INFO L226 Difference]: Without dead ends: 1116 [2022-02-10 23:58:45,299 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:58:45,300 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:45,300 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 80 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-02-10 23:58:45,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 467. [2022-02-10 23:58:45,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 452 states have (on average 3.099557522123894) internal successors, (1401), 466 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1401 transitions. [2022-02-10 23:58:45,313 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1401 transitions. Word has length 8 [2022-02-10 23:58:45,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:45,313 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 1401 transitions. [2022-02-10 23:58:45,313 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,314 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1401 transitions. [2022-02-10 23:58:45,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-10 23:58:45,314 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:45,314 INFO L515 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:45,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-02-10 23:58:45,314 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-02-10 23:58:45,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:45,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1337844554, now seen corresponding path program 1 times [2022-02-10 23:58:45,315 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:45,315 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333111720] [2022-02-10 23:58:45,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:45,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:45,318 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:58:45,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:45,322 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:58:45,322 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:58:45,322 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-02-10 23:58:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-02-10 23:58:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-02-10 23:58:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-02-10 23:58:45,323 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-02-10 23:58:45,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-02-10 23:58:45,323 INFO L733 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-02-10 23:58:45,323 WARN L239 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-02-10 23:58:45,323 INFO L538 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-02-10 23:58:45,326 WARN L322 ript$VariableManager]: TermVariable threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,326 WARN L322 ript$VariableManager]: TermVariable threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,326 WARN L322 ript$VariableManager]: TermVariable threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,326 WARN L322 ript$VariableManager]: TermVariable threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,327 WARN L322 ript$VariableManager]: TermVariable threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,327 WARN L322 ript$VariableManager]: TermVariable threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,327 WARN L322 ript$VariableManager]: TermVariable threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,327 WARN L322 ript$VariableManager]: TermVariable threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,327 WARN L322 ript$VariableManager]: TermVariable threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,327 WARN L322 ript$VariableManager]: TermVariable threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,328 WARN L322 ript$VariableManager]: TermVariable threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,328 WARN L322 ript$VariableManager]: TermVariable threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,328 WARN L322 ript$VariableManager]: TermVariable threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,328 WARN L322 ript$VariableManager]: TermVariable threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,328 WARN L322 ript$VariableManager]: TermVariable threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,328 WARN L322 ript$VariableManager]: TermVariable threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-02-10 23:58:45,329 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-02-10 23:58:45,330 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-10 23:58:45,330 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 [2022-02-10 23:58:45,330 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-02-10 23:58:45,331 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 82 flow [2022-02-10 23:58:45,422 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,430 INFO L276 IsEmpty]: Start isEmpty. Operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-02-10 23:58:45,431 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:45,431 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-02-10 23:58:45,431 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:45,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:45,431 INFO L85 PathProgramCache]: Analyzing trace with hash 98437983, now seen corresponding path program 1 times [2022-02-10 23:58:45,431 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:45,431 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655239078] [2022-02-10 23:58:45,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:45,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:45,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:45,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:45,463 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:45,463 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655239078] [2022-02-10 23:58:45,463 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655239078] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:45,463 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:45,463 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-02-10 23:58:45,463 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287701396] [2022-02-10 23:58:45,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:45,463 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-02-10 23:58:45,463 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:45,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-02-10 23:58:45,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-02-10 23:58:45,481 INFO L87 Difference]: Start difference. First operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 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 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:45,546 INFO L93 Difference]: Finished difference Result 2925 states and 11201 transitions. [2022-02-10 23:58:45,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-02-10 23:58:45,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-02-10 23:58:45,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:45,564 INFO L225 Difference]: With dead ends: 2925 [2022-02-10 23:58:45,564 INFO L226 Difference]: Without dead ends: 2923 [2022-02-10 23:58:45,564 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:45,565 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 40 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:45,566 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-10 23:58:45,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-02-10 23:58:45,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2923. [2022-02-10 23:58:45,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2882 states have (on average 3.885496183206107) internal successors, (11198), 2922 states have internal predecessors, (11198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 11198 transitions. [2022-02-10 23:58:45,633 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 11198 transitions. Word has length 5 [2022-02-10 23:58:45,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:45,634 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 11198 transitions. [2022-02-10 23:58:45,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 11198 transitions. [2022-02-10 23:58:45,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-02-10 23:58:45,636 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:45,636 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:45,637 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-02-10 23:58:45,637 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:45,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:45,638 INFO L85 PathProgramCache]: Analyzing trace with hash 109398197, now seen corresponding path program 1 times [2022-02-10 23:58:45,638 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:45,638 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136955770] [2022-02-10 23:58:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:45,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:45,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:45,677 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:45,678 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:45,678 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136955770] [2022-02-10 23:58:45,678 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136955770] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:45,678 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:45,678 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:45,678 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524344198] [2022-02-10 23:58:45,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:45,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:45,679 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:45,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:45,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:45,679 INFO L87 Difference]: Start difference. First operand 2923 states and 11198 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:45,864 INFO L93 Difference]: Finished difference Result 6688 states and 25812 transitions. [2022-02-10 23:58:45,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:58:45,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-02-10 23:58:45,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:45,899 INFO L225 Difference]: With dead ends: 6688 [2022-02-10 23:58:45,900 INFO L226 Difference]: Without dead ends: 6688 [2022-02-10 23:58:45,900 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:45,900 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:45,901 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 73 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:45,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2022-02-10 23:58:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 2913. [2022-02-10 23:58:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2872 states have (on average 3.885097493036212) internal successors, (11158), 2912 states have internal predecessors, (11158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 11158 transitions. [2022-02-10 23:58:45,996 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 11158 transitions. Word has length 7 [2022-02-10 23:58:45,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:45,997 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 11158 transitions. [2022-02-10 23:58:45,997 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:45,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 11158 transitions. [2022-02-10 23:58:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:45,997 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:45,997 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:45,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-02-10 23:58:45,997 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash -896880757, now seen corresponding path program 1 times [2022-02-10 23:58:45,998 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:45,998 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971981175] [2022-02-10 23:58:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:45,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:46,032 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:46,032 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:46,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971981175] [2022-02-10 23:58:46,032 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971981175] provided 0 perfect and 1 imperfect interpolant sequences [2022-02-10 23:58:46,032 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52504674] [2022-02-10 23:58:46,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:46,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-02-10 23:58:46,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-10 23:58:46,033 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) [2022-02-10 23:58:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:46,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2022-02-10 23:58:46,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-02-10 23:58:46,061 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-02-10 23:58:46,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:46,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-02-10 23:58:46,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:46,129 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52504674] provided 0 perfect and 2 imperfect interpolant sequences [2022-02-10 23:58:46,130 INFO L191 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-02-10 23:58:46,130 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-02-10 23:58:46,130 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073552094] [2022-02-10 23:58:46,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-02-10 23:58:46,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-02-10 23:58:46,130 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:46,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-02-10 23:58:46,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-02-10 23:58:46,131 INFO L87 Difference]: Start difference. First operand 2913 states and 11158 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:46,244 INFO L93 Difference]: Finished difference Result 3797 states and 14239 transitions. [2022-02-10 23:58:46,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-02-10 23:58:46,244 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:46,256 INFO L225 Difference]: With dead ends: 3797 [2022-02-10 23:58:46,257 INFO L226 Difference]: Without dead ends: 3793 [2022-02-10 23:58:46,257 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:46,257 INFO L934 BasicCegarLoop]: 9 mSDtfsCounter, 105 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:46,258 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 59 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:46,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2022-02-10 23:58:46,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 2825. [2022-02-10 23:58:46,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2786 states have (on average 3.8797559224694904) internal successors, (10809), 2824 states have internal predecessors, (10809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:46,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 10809 transitions. [2022-02-10 23:58:46,324 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 10809 transitions. Word has length 8 [2022-02-10 23:58:46,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:46,324 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 10809 transitions. [2022-02-10 23:58:46,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:46,325 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 10809 transitions. [2022-02-10 23:58:46,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:46,325 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:46,325 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:46,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-02-10 23:58:46,535 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,SelfDestructingSolverStorable12 [2022-02-10 23:58:46,535 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:46,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:46,536 INFO L85 PathProgramCache]: Analyzing trace with hash -896880753, now seen corresponding path program 1 times [2022-02-10 23:58:46,536 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:46,536 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879140335] [2022-02-10 23:58:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:46,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:46,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:46,565 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:46,565 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879140335] [2022-02-10 23:58:46,565 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879140335] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:46,565 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:46,565 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:46,565 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783493056] [2022-02-10 23:58:46,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:46,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:46,566 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:46,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:46,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:46,566 INFO L87 Difference]: Start difference. First operand 2825 states and 10809 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:46,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:46,702 INFO L93 Difference]: Finished difference Result 8111 states and 30991 transitions. [2022-02-10 23:58:46,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:58:46,703 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:46,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:46,789 INFO L225 Difference]: With dead ends: 8111 [2022-02-10 23:58:46,789 INFO L226 Difference]: Without dead ends: 8102 [2022-02-10 23:58:46,790 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:46,790 INFO L934 BasicCegarLoop]: 14 mSDtfsCounter, 112 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:46,790 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 63 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:46,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2022-02-10 23:58:46,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 2882. [2022-02-10 23:58:46,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2843 states have (on average 3.875483644037988) internal successors, (11018), 2881 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:46,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 11018 transitions. [2022-02-10 23:58:46,886 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 11018 transitions. Word has length 8 [2022-02-10 23:58:46,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:46,886 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 11018 transitions. [2022-02-10 23:58:46,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:46,886 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 11018 transitions. [2022-02-10 23:58:46,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-02-10 23:58:46,887 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:46,887 INFO L515 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:46,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-02-10 23:58:46,887 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:46,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:46,887 INFO L85 PathProgramCache]: Analyzing trace with hash -903626973, now seen corresponding path program 2 times [2022-02-10 23:58:46,887 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:46,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698379868] [2022-02-10 23:58:46,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:46,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:46,922 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:46,923 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:46,923 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698379868] [2022-02-10 23:58:46,923 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698379868] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:46,923 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:46,923 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:58:46,923 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683519887] [2022-02-10 23:58:46,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:46,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 23:58:46,923 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:46,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 23:58:46,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:46,924 INFO L87 Difference]: Start difference. First operand 2882 states and 11018 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:47,127 INFO L93 Difference]: Finished difference Result 6467 states and 24842 transitions. [2022-02-10 23:58:47,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-02-10 23:58:47,128 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-02-10 23:58:47,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:47,151 INFO L225 Difference]: With dead ends: 6467 [2022-02-10 23:58:47,151 INFO L226 Difference]: Without dead ends: 6452 [2022-02-10 23:58:47,151 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-02-10 23:58:47,152 INFO L934 BasicCegarLoop]: 17 mSDtfsCounter, 152 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:47,152 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 100 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:47,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-02-10 23:58:47,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 2743. [2022-02-10 23:58:47,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2705 states have (on average 3.878743068391867) internal successors, (10492), 2742 states have internal predecessors, (10492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 10492 transitions. [2022-02-10 23:58:47,245 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 10492 transitions. Word has length 8 [2022-02-10 23:58:47,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:47,246 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 10492 transitions. [2022-02-10 23:58:47,246 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,246 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 10492 transitions. [2022-02-10 23:58:47,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-02-10 23:58:47,246 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:47,246 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:47,246 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-02-10 23:58:47,246 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:47,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:47,247 INFO L85 PathProgramCache]: Analyzing trace with hash 2052106956, now seen corresponding path program 1 times [2022-02-10 23:58:47,247 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:47,247 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764169580] [2022-02-10 23:58:47,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:47,247 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:47,277 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:47,277 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:47,278 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764169580] [2022-02-10 23:58:47,278 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764169580] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:47,278 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:47,278 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:58:47,278 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082003937] [2022-02-10 23:58:47,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:47,278 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 23:58:47,278 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:47,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 23:58:47,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:47,279 INFO L87 Difference]: Start difference. First operand 2743 states and 10492 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:47,448 INFO L93 Difference]: Finished difference Result 6277 states and 24190 transitions. [2022-02-10 23:58:47,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:58:47,448 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-02-10 23:58:47,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:47,467 INFO L225 Difference]: With dead ends: 6277 [2022-02-10 23:58:47,467 INFO L226 Difference]: Without dead ends: 6277 [2022-02-10 23:58:47,468 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:58:47,468 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:47,468 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 102 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:47,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2022-02-10 23:58:47,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 2736. [2022-02-10 23:58:47,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2698 states have (on average 3.8773165307635287) internal successors, (10461), 2735 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 10461 transitions. [2022-02-10 23:58:47,587 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 10461 transitions. Word has length 9 [2022-02-10 23:58:47,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:47,587 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 10461 transitions. [2022-02-10 23:58:47,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,587 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 10461 transitions. [2022-02-10 23:58:47,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-10 23:58:47,588 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:47,588 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:47,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-02-10 23:58:47,588 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:47,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:47,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1385677606, now seen corresponding path program 1 times [2022-02-10 23:58:47,588 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:47,588 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81540222] [2022-02-10 23:58:47,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:47,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-02-10 23:58:47,629 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:47,629 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81540222] [2022-02-10 23:58:47,629 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81540222] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:47,629 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:47,629 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-02-10 23:58:47,629 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049977827] [2022-02-10 23:58:47,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:47,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-02-10 23:58:47,629 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:47,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-02-10 23:58:47,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-02-10 23:58:47,630 INFO L87 Difference]: Start difference. First operand 2736 states and 10461 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:47,786 INFO L93 Difference]: Finished difference Result 8835 states and 33985 transitions. [2022-02-10 23:58:47,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-02-10 23:58:47,787 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-02-10 23:58:47,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:47,811 INFO L225 Difference]: With dead ends: 8835 [2022-02-10 23:58:47,811 INFO L226 Difference]: Without dead ends: 8835 [2022-02-10 23:58:47,811 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-02-10 23:58:47,812 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 117 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:47,812 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8835 states. [2022-02-10 23:58:47,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 2826. [2022-02-10 23:58:47,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2788 states have (on average 3.8812769010043042) internal successors, (10821), 2825 states have internal predecessors, (10821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 10821 transitions. [2022-02-10 23:58:47,905 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 10821 transitions. Word has length 10 [2022-02-10 23:58:47,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:47,905 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 10821 transitions. [2022-02-10 23:58:47,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 10821 transitions. [2022-02-10 23:58:47,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-02-10 23:58:47,905 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:47,905 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:47,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-02-10 23:58:47,906 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:47,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:47,906 INFO L85 PathProgramCache]: Analyzing trace with hash -809193628, now seen corresponding path program 2 times [2022-02-10 23:58:47,906 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:47,906 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116076592] [2022-02-10 23:58:47,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:47,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:47,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:47,954 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-10 23:58:47,954 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:47,954 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116076592] [2022-02-10 23:58:47,954 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116076592] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:47,954 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:47,954 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-02-10 23:58:47,954 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816043929] [2022-02-10 23:58:47,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:47,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-02-10 23:58:47,955 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:47,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-02-10 23:58:47,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-02-10 23:58:47,955 INFO L87 Difference]: Start difference. First operand 2826 states and 10821 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:48,174 INFO L93 Difference]: Finished difference Result 6224 states and 23945 transitions. [2022-02-10 23:58:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-02-10 23:58:48,174 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-02-10 23:58:48,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:48,190 INFO L225 Difference]: With dead ends: 6224 [2022-02-10 23:58:48,190 INFO L226 Difference]: Without dead ends: 6224 [2022-02-10 23:58:48,191 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-02-10 23:58:48,191 INFO L934 BasicCegarLoop]: 21 mSDtfsCounter, 131 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:48,191 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 122 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:48,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2022-02-10 23:58:48,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 2678. [2022-02-10 23:58:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2640 states have (on average 3.8700757575757576) internal successors, (10217), 2677 states have internal predecessors, (10217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:48,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 10217 transitions. [2022-02-10 23:58:48,260 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 10217 transitions. Word has length 10 [2022-02-10 23:58:48,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:48,260 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 10217 transitions. [2022-02-10 23:58:48,260 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:48,260 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 10217 transitions. [2022-02-10 23:58:48,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-10 23:58:48,261 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:48,261 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:48,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-02-10 23:58:48,261 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:48,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:48,261 INFO L85 PathProgramCache]: Analyzing trace with hash 16748196, now seen corresponding path program 1 times [2022-02-10 23:58:48,261 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:48,261 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346196394] [2022-02-10 23:58:48,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:48,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-10 23:58:48,286 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-02-10 23:58:48,286 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-10 23:58:48,286 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346196394] [2022-02-10 23:58:48,286 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346196394] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-10 23:58:48,286 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-10 23:58:48,286 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-02-10 23:58:48,286 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064152002] [2022-02-10 23:58:48,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-10 23:58:48,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-02-10 23:58:48,287 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-10 23:58:48,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-02-10 23:58:48,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-02-10 23:58:48,287 INFO L87 Difference]: Start difference. First operand 2678 states and 10217 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:48,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-10 23:58:48,418 INFO L93 Difference]: Finished difference Result 8630 states and 32968 transitions. [2022-02-10 23:58:48,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-02-10 23:58:48,418 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-02-10 23:58:48,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-10 23:58:48,443 INFO L225 Difference]: With dead ends: 8630 [2022-02-10 23:58:48,443 INFO L226 Difference]: Without dead ends: 8618 [2022-02-10 23:58:48,443 INFO L933 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-02-10 23:58:48,443 INFO L934 BasicCegarLoop]: 15 mSDtfsCounter, 118 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-02-10 23:58:48,444 INFO L935 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 66 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-02-10 23:58:48,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2022-02-10 23:58:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 2869. [2022-02-10 23:58:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2831 states have (on average 3.8562345460967857) internal successors, (10917), 2868 states have internal predecessors, (10917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:48,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 10917 transitions. [2022-02-10 23:58:48,564 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 10917 transitions. Word has length 11 [2022-02-10 23:58:48,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-10 23:58:48,564 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 10917 transitions. [2022-02-10 23:58:48,564 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-02-10 23:58:48,564 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 10917 transitions. [2022-02-10 23:58:48,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-02-10 23:58:48,565 INFO L507 BasicCegarLoop]: Found error trace [2022-02-10 23:58:48,565 INFO L515 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:48,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-02-10 23:58:48,565 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-02-10 23:58:48,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-10 23:58:48,565 INFO L85 PathProgramCache]: Analyzing trace with hash 16748200, now seen corresponding path program 1 times [2022-02-10 23:58:48,565 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-10 23:58:48,565 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356440672] [2022-02-10 23:58:48,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-10 23:58:48,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-10 23:58:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:48,568 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-10 23:58:48,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-10 23:58:48,571 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-10 23:58:48,571 INFO L629 BasicCegarLoop]: Counterexample is feasible [2022-02-10 23:58:48,571 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-02-10 23:58:48,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-02-10 23:58:48,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-02-10 23:58:48,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-02-10 23:58:48,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-02-10 23:58:48,571 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-02-10 23:58:48,571 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-02-10 23:58:48,572 INFO L733 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-02-10 23:58:48,574 INFO L234 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2022-02-10 23:58:48,574 INFO L184 ceAbstractionStarter]: Computing trace abstraction results [2022-02-10 23:58:48,582 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.02 11:58:48 BasicIcfg [2022-02-10 23:58:48,582 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-10 23:58:48,583 INFO L158 Benchmark]: Toolchain (without parser) took 5630.84ms. Allocated memory was 166.7MB in the beginning and 356.5MB in the end (delta: 189.8MB). Free memory was 134.8MB in the beginning and 234.8MB in the end (delta: -100.1MB). Peak memory consumption was 91.2MB. Max. memory is 8.0GB. [2022-02-10 23:58:48,583 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.10ms. Allocated memory is still 166.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-10 23:58:48,583 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.98ms. Allocated memory is still 166.7MB. Free memory was 134.6MB in the beginning and 133.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:58:48,583 INFO L158 Benchmark]: Boogie Preprocessor took 9.02ms. Allocated memory is still 166.7MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 928.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-10 23:58:48,583 INFO L158 Benchmark]: RCFGBuilder took 136.21ms. Allocated memory is still 166.7MB. Free memory was 132.2MB in the beginning and 124.2MB in the end (delta: 8.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-02-10 23:58:48,583 INFO L158 Benchmark]: TraceAbstraction took 5455.19ms. Allocated memory was 166.7MB in the beginning and 356.5MB in the end (delta: 189.8MB). Free memory was 123.7MB in the beginning and 234.8MB in the end (delta: -111.1MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. [2022-02-10 23:58:48,584 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 0.10ms. Allocated memory is still 166.7MB. Free memory is still 135.8MB. There was no memory consumed. Max. memory is 8.0GB. * Boogie Procedure Inliner took 23.98ms. Allocated memory is still 166.7MB. Free memory was 134.6MB in the beginning and 133.1MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 9.02ms. Allocated memory is still 166.7MB. Free memory was 133.1MB in the beginning and 132.2MB in the end (delta: 928.2kB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 136.21ms. Allocated memory is still 166.7MB. Free memory was 132.2MB in the beginning and 124.2MB in the end (delta: 8.0MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 5455.19ms. Allocated memory was 166.7MB in the beginning and 356.5MB in the end (delta: 189.8MB). Free memory was 123.7MB in the beginning and 234.8MB in the end (delta: -111.1MB). Peak memory consumption was 79.7MB. Max. memory is 8.0GB. * 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 - 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 - 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 - 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 - CounterExampleResult [Line: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L24] 0 x := 0; VAL [x=0] [L25] 0 i := 0; VAL [i=0, x=0] [L28] FORK 0 fork i thread(i); VAL [i=0, x=0, y=0] [L16] 1 x := x + 1; VAL [i=0, x=1, y=0] [L29] 0 i := i + 1; VAL [i=1, x=1, y=0] [L28] FORK 0 fork i thread(i); VAL [i=1, x=1, y=0] [L16] 2 x := x + 1; VAL [i=1, x=2, y=0] [L29] 0 i := i + 1; VAL [i=2, x=2, y=0] [L28] FORK 0 fork i thread(i); VAL [i=2, x=2, y=0] [L16] 3 x := x + 1; VAL [i=2, x=3, y=0] [L17] 1 assert x <= y + 2; VAL [i=2, x=3, y=0] - UnprovableResult [Line: 27]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 7 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 454 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 315 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 714 IncrementalHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 74 mSDtfsCounter, 714 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 3089 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 1 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/7 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 - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.2s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 985 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 985 mSDsluCounter, 700 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 610 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1633 IncrementalHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 138 mSDtfsCounter, 1633 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2938occurred in iteration=0, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 9 MinimizatonAttempts, 32517 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 SizeOfPredicates, 1 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 19/22 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 proved your program to be incorrect! [2022-02-10 23:58:48,617 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...