/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:44:50,181 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:44:50,183 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:44:50,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:44:50,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:44:50,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:44:50,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:44:50,289 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe.epf [2022-01-18 03:44:50,319 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:44:50,319 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:44:50,319 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:44:50,320 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:44:50,320 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:44:50,320 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:44:50,321 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:44:50,321 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:44:50,321 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:44:50,321 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:44:50,321 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:44:50,321 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:44:50,322 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:44:50,323 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:44:50,323 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:44:50,323 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:44:50,323 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:44:50,323 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:44:50,323 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:44:50,323 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:44:50,324 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:44:50,324 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:44:50,324 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:44:50,324 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:44:50,324 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:44:50,324 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:44:50,549 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:44:50,569 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:44:50,571 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:44:50,571 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:44:50,575 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:44:50,577 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl [2022-01-18 03:44:50,577 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_local.bpl' [2022-01-18 03:44:50,597 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:44:50,599 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:44:50,600 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:44:50,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:44:50,601 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:44:50,611 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,617 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,623 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:44:50,624 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:44:50,626 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:44:50,626 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:44:50,626 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:44:50,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,633 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,634 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,634 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,638 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,638 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,640 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:44:50,641 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:44:50,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:44:50,642 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:44:50,643 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/1) ... [2022-01-18 03:44:50,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:44:50,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:44:50,669 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-01-18 03:44:50,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 03:44:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:44:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:44:50,703 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-01-18 03:44:50,703 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-01-18 03:44:50,703 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-01-18 03:44:50,704 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-01-18 03:44:50,721 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-01-18 03:44:50,743 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:44:50,744 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:44:50,779 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:44:50,784 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:44:50,785 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-18 03:44:50,786 INFO L202 PluginConnector]: Adding new model fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:44:50 BoogieIcfgContainer [2022-01-18 03:44:50,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:44:50,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:44:50,788 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:44:50,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:44:50,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:44:50" (1/2) ... [2022-01-18 03:44:50,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9faf7e and model type fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:44:50, skipping insertion in model container [2022-01-18 03:44:50,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_local.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:44:50" (2/2) ... [2022-01-18 03:44:50,792 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_local.bpl [2022-01-18 03:44:50,796 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:44:50,796 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:44:50,796 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:44:50,796 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:44:50,810 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:50,810 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:50,810 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:50,811 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:50,813 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:50,814 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:44:50,851 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:44:50,860 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:44:50,861 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 03:44:50,870 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 12 places, 9 transitions, 23 flow [2022-01-18 03:44:50,887 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 18 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:50,889 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 15 states have (on average 1.6666666666666667) internal successors, (25), 17 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:50,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-01-18 03:44:50,895 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:50,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2022-01-18 03:44:50,896 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:44:50,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:50,906 INFO L85 PathProgramCache]: Analyzing trace with hash 42154, now seen corresponding path program 1 times [2022-01-18 03:44:50,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:50,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229418] [2022-01-18 03:44:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:50,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:50,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:50,985 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:44:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:51,015 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:44:51,017 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:44:51,017 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-01-18 03:44:51,020 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-01-18 03:44:51,021 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-01-18 03:44:51,021 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:44:51,025 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 03:44:51,028 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:44:51,028 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-18 03:44:51,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,037 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,038 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,039 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,043 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,043 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,044 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,046 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,047 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,048 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,049 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:44:51,057 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:44:51,063 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:44:51,063 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 03:44:51,064 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2022-01-18 03:44:51,082 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 116 states, 108 states have (on average 2.4074074074074074) internal successors, (260), 115 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 108 states have (on average 2.4074074074074074) internal successors, (260), 115 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-01-18 03:44:51,083 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:51,083 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2022-01-18 03:44:51,084 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:44:51,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:51,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1773586, now seen corresponding path program 1 times [2022-01-18 03:44:51,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:51,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040412945] [2022-01-18 03:44:51,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:51,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:51,089 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:44:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:51,093 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:44:51,093 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:44:51,093 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-01-18 03:44:51,093 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-01-18 03:44:51,096 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-01-18 03:44:51,097 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-01-18 03:44:51,097 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:44:51,097 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 03:44:51,098 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:44:51,098 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-18 03:44:51,107 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,108 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,108 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,108 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,109 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,109 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,109 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,109 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,110 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,110 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,110 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,110 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,111 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,111 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,112 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,112 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:44:51,113 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:44:51,114 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:44:51,114 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 03:44:51,115 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 28 places, 21 transitions, 63 flow [2022-01-18 03:44:51,224 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 720 states, 701 states have (on average 3.166904422253923) internal successors, (2220), 719 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,226 INFO L276 IsEmpty]: Start isEmpty. Operand has 720 states, 701 states have (on average 3.166904422253923) internal successors, (2220), 719 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:44:51,227 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:51,227 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:44:51,227 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:44:51,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:51,228 INFO L85 PathProgramCache]: Analyzing trace with hash 75168682, now seen corresponding path program 1 times [2022-01-18 03:44:51,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:51,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811578164] [2022-01-18 03:44:51,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:51,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:44:51,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:44:51,373 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:44:51,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811578164] [2022-01-18 03:44:51,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811578164] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:44:51,374 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:44:51,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:44:51,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531176403] [2022-01-18 03:44:51,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:44:51,377 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:44:51,377 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:44:51,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:44:51,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:44:51,447 INFO L87 Difference]: Start difference. First operand has 720 states, 701 states have (on average 3.166904422253923) internal successors, (2220), 719 states have internal predecessors, (2220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:44:51,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:44:51,572 INFO L93 Difference]: Finished difference Result 1698 states and 4780 transitions. [2022-01-18 03:44:51,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:44:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-01-18 03:44:51,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:44:51,601 INFO L225 Difference]: With dead ends: 1698 [2022-01-18 03:44:51,601 INFO L226 Difference]: Without dead ends: 1629 [2022-01-18 03:44:51,602 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:44:51,605 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 41 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:44:51,606 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 46 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:44:51,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1629 states. [2022-01-18 03:44:51,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1629 to 993. [2022-01-18 03:44:51,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 975 states have (on average 3.0574358974358975) internal successors, (2981), 992 states have internal predecessors, (2981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 2981 transitions. [2022-01-18 03:44:51,741 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 2981 transitions. Word has length 5 [2022-01-18 03:44:51,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:44:51,741 INFO L470 AbstractCegarLoop]: Abstraction has 993 states and 2981 transitions. [2022-01-18 03:44:51,741 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:44:51,741 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 2981 transitions. [2022-01-18 03:44:51,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:44:51,742 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:51,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:44:51,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:44:51,742 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:44:51,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:51,743 INFO L85 PathProgramCache]: Analyzing trace with hash 75175629, now seen corresponding path program 1 times [2022-01-18 03:44:51,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:51,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234619191] [2022-01-18 03:44:51,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:51,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:51,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:51,747 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:44:51,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:51,750 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:44:51,750 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:44:51,751 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-01-18 03:44:51,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-01-18 03:44:51,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-01-18 03:44:51,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-01-18 03:44:51,752 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-01-18 03:44:51,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:44:51,753 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-18 03:44:51,753 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:44:51,753 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-18 03:44:51,757 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,757 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,757 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,757 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,758 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,758 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,758 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,758 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,759 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,759 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,759 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,759 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,759 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,760 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,760 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,760 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,760 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,761 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,761 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,761 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:51,762 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:44:51,763 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:44:51,764 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:44:51,764 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 03:44:51,765 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 36 places, 27 transitions, 86 flow [2022-01-18 03:44:51,916 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 4376 states, 4334 states have (on average 3.957544993077988) internal successors, (17152), 4375 states have internal predecessors, (17152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,933 INFO L276 IsEmpty]: Start isEmpty. Operand has 4376 states, 4334 states have (on average 3.957544993077988) internal successors, (17152), 4375 states have internal predecessors, (17152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:51,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:44:51,934 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:51,934 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:44:51,934 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:44:51,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:51,935 INFO L85 PathProgramCache]: Analyzing trace with hash 101078907, now seen corresponding path program 1 times [2022-01-18 03:44:51,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:51,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858687557] [2022-01-18 03:44:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:51,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:44:52,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:44:52,018 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:44:52,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858687557] [2022-01-18 03:44:52,018 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858687557] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:44:52,018 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:44:52,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:44:52,019 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399894649] [2022-01-18 03:44:52,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:44:52,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:44:52,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:44:52,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:44:52,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:44:52,038 INFO L87 Difference]: Start difference. First operand has 4376 states, 4334 states have (on average 3.957544993077988) internal successors, (17152), 4375 states have internal predecessors, (17152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:44:52,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:44:52,255 INFO L93 Difference]: Finished difference Result 12322 states and 44032 transitions. [2022-01-18 03:44:52,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:44:52,256 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-01-18 03:44:52,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:44:52,376 INFO L225 Difference]: With dead ends: 12322 [2022-01-18 03:44:52,376 INFO L226 Difference]: Without dead ends: 12072 [2022-01-18 03:44:52,377 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:44:52,383 INFO L933 BasicCegarLoop]: 31 mSDtfsCounter, 54 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:44:52,385 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 60 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:44:52,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12072 states. [2022-01-18 03:44:52,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12072 to 6974. [2022-01-18 03:44:52,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6974 states, 6933 states have (on average 3.8049906245492573) internal successors, (26380), 6973 states have internal predecessors, (26380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6974 states to 6974 states and 26380 transitions. [2022-01-18 03:44:52,891 INFO L78 Accepts]: Start accepts. Automaton has 6974 states and 26380 transitions. Word has length 5 [2022-01-18 03:44:52,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:44:52,892 INFO L470 AbstractCegarLoop]: Abstraction has 6974 states and 26380 transitions. [2022-01-18 03:44:52,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:44:52,893 INFO L276 IsEmpty]: Start isEmpty. Operand 6974 states and 26380 transitions. [2022-01-18 03:44:52,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-18 03:44:52,894 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:52,895 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-18 03:44:52,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 03:44:52,895 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:44:52,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:52,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1160997765, now seen corresponding path program 1 times [2022-01-18 03:44:52,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:52,897 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461056374] [2022-01-18 03:44:52,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:52,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:52,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:52,907 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:44:52,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:44:52,914 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:44:52,914 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:44:52,914 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (5 of 6 remaining) [2022-01-18 03:44:52,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 6 remaining) [2022-01-18 03:44:52,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-01-18 03:44:52,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-01-18 03:44:52,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-01-18 03:44:52,915 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-01-18 03:44:52,916 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-01-18 03:44:52,916 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-18 03:44:52,916 WARN L234 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:44:52,916 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2022-01-18 03:44:53,004 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,005 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,005 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,005 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,005 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,005 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,006 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,006 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,006 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,006 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,006 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,006 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,007 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,007 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,007 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,008 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,008 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,008 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,008 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,008 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,009 WARN L322 ript$VariableManager]: TermVariabe threadThread1of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,009 WARN L322 ript$VariableManager]: TermVariabe threadThread2of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,009 WARN L322 ript$VariableManager]: TermVariabe threadThread3of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,010 WARN L322 ript$VariableManager]: TermVariabe threadThread4of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,010 WARN L322 ript$VariableManager]: TermVariabe threadThread5of5ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:44:53,010 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:44:53,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:44:53,011 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:44:53,012 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-01-18 03:44:53,012 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 44 places, 33 transitions, 111 flow [2022-01-18 03:44:54,050 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 26376 states, 26287 states have (on average 4.770114505268764) internal successors, (125392), 26375 states have internal predecessors, (125392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:54,110 INFO L276 IsEmpty]: Start isEmpty. Operand has 26376 states, 26287 states have (on average 4.770114505268764) internal successors, (125392), 26375 states have internal predecessors, (125392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:54,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:44:54,111 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:54,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:44:54,111 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-01-18 03:44:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash 132714962, now seen corresponding path program 1 times [2022-01-18 03:44:54,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:54,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792651456] [2022-01-18 03:44:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:54,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:54,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:44:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:44:54,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:44:54,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792651456] [2022-01-18 03:44:54,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792651456] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:44:54,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:44:54,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:44:54,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335536461] [2022-01-18 03:44:54,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:44:54,147 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:44:54,147 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:44:54,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:44:54,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:44:54,204 INFO L87 Difference]: Start difference. First operand has 26376 states, 26287 states have (on average 4.770114505268764) internal successors, (125392), 26375 states have internal predecessors, (125392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:44:55,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:44:55,425 INFO L93 Difference]: Finished difference Result 82066 states and 355116 transitions. [2022-01-18 03:44:55,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:44:55,440 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-01-18 03:44:55,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:44:56,350 INFO L225 Difference]: With dead ends: 82066 [2022-01-18 03:44:56,350 INFO L226 Difference]: Without dead ends: 81235 [2022-01-18 03:44:56,350 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:44:56,351 INFO L933 BasicCegarLoop]: 39 mSDtfsCounter, 67 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:44:56,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 74 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:44:56,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81235 states. [2022-01-18 03:44:58,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81235 to 46277. [2022-01-18 03:44:58,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46277 states, 46189 states have (on average 4.551689796271839) internal successors, (210238), 46276 states have internal predecessors, (210238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:44:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46277 states to 46277 states and 210238 transitions. [2022-01-18 03:44:59,027 INFO L78 Accepts]: Start accepts. Automaton has 46277 states and 210238 transitions. Word has length 5 [2022-01-18 03:44:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:44:59,027 INFO L470 AbstractCegarLoop]: Abstraction has 46277 states and 210238 transitions. [2022-01-18 03:44:59,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:44:59,027 INFO L276 IsEmpty]: Start isEmpty. Operand 46277 states and 210238 transitions. [2022-01-18 03:44:59,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-18 03:44:59,028 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:44:59,028 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-18 03:44:59,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 03:44:59,029 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-01-18 03:44:59,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:44:59,029 INFO L85 PathProgramCache]: Analyzing trace with hash -179995026, now seen corresponding path program 1 times [2022-01-18 03:44:59,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:44:59,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411863599] [2022-01-18 03:44:59,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:44:59,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:44:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:44:59,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:44:59,068 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:44:59,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411863599] [2022-01-18 03:44:59,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411863599] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:44:59,068 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:44:59,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:44:59,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672910614] [2022-01-18 03:44:59,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:44:59,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:44:59,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:44:59,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:44:59,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:44:59,070 INFO L87 Difference]: Start difference. First operand 46277 states and 210238 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:00,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:45:00,237 INFO L93 Difference]: Finished difference Result 104662 states and 453119 transitions. [2022-01-18 03:45:00,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:45:00,238 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-18 03:45:00,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:45:00,972 INFO L225 Difference]: With dead ends: 104662 [2022-01-18 03:45:00,973 INFO L226 Difference]: Without dead ends: 104193 [2022-01-18 03:45:00,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:45:00,975 INFO L933 BasicCegarLoop]: 40 mSDtfsCounter, 65 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 76 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 76 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:45:00,975 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 75 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 76 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:45:01,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104193 states. [2022-01-18 03:45:03,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104193 to 55726. [2022-01-18 03:45:03,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 55726 states, 55638 states have (on average 4.55136777022898) internal successors, (253229), 55725 states have internal predecessors, (253229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:04,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55726 states to 55726 states and 253229 transitions. [2022-01-18 03:45:04,125 INFO L78 Accepts]: Start accepts. Automaton has 55726 states and 253229 transitions. Word has length 6 [2022-01-18 03:45:04,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:45:04,126 INFO L470 AbstractCegarLoop]: Abstraction has 55726 states and 253229 transitions. [2022-01-18 03:45:04,126 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:04,126 INFO L276 IsEmpty]: Start isEmpty. Operand 55726 states and 253229 transitions. [2022-01-18 03:45:04,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 03:45:04,127 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:45:04,127 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:45:04,128 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 03:45:04,128 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 3 more)] === [2022-01-18 03:45:04,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:45:04,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1284170360, now seen corresponding path program 1 times [2022-01-18 03:45:04,128 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:45:04,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950457945] [2022-01-18 03:45:04,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:45:04,129 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:45:04,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:45:04,132 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:45:04,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:45:04,136 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:45:04,136 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:45:04,136 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (6 of 7 remaining) [2022-01-18 03:45:04,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (5 of 7 remaining) [2022-01-18 03:45:04,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (4 of 7 remaining) [2022-01-18 03:45:04,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 7 remaining) [2022-01-18 03:45:04,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 7 remaining) [2022-01-18 03:45:04,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 7 remaining) [2022-01-18 03:45:04,137 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 7 remaining) [2022-01-18 03:45:04,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 03:45:04,138 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-01-18 03:45:04,138 WARN L234 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:45:04,138 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2022-01-18 03:45:04,148 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,149 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,149 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,149 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,150 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,150 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,150 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,150 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,151 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,151 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,151 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,152 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,153 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,153 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,153 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,153 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,153 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,154 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,154 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,154 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,154 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,154 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,154 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,155 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,157 WARN L322 ript$VariableManager]: TermVariabe threadThread1of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,158 WARN L322 ript$VariableManager]: TermVariabe threadThread2of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,158 WARN L322 ript$VariableManager]: TermVariabe threadThread3of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,158 WARN L322 ript$VariableManager]: TermVariabe threadThread4of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,159 WARN L322 ript$VariableManager]: TermVariabe threadThread5of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,159 WARN L322 ript$VariableManager]: TermVariabe threadThread6of6ForFork0_t not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:45:04,159 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:45:04,160 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:45:04,160 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-18 03:45:04,160 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-01-18 03:45:04,161 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 52 places, 39 transitions, 138 flow [2022-01-18 03:45:09,582 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 158504 states, 158320 states have (on average 5.594340576048509) internal successors, (885696), 158503 states have internal predecessors, (885696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:09,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 158504 states, 158320 states have (on average 5.594340576048509) internal successors, (885696), 158503 states have internal predecessors, (885696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:09,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:45:09,832 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:45:09,832 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:45:09,832 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-18 03:45:09,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:45:09,832 INFO L85 PathProgramCache]: Analyzing trace with hash 170106637, now seen corresponding path program 1 times [2022-01-18 03:45:09,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:45:09,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297705889] [2022-01-18 03:45:09,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:45:09,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:45:09,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:45:09,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:45:09,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:45:09,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297705889] [2022-01-18 03:45:09,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297705889] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:45:09,900 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:45:09,901 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:45:09,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549142036] [2022-01-18 03:45:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:45:09,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:45:09,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:45:09,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:45:09,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:45:10,166 INFO L87 Difference]: Start difference. First operand has 158504 states, 158320 states have (on average 5.594340576048509) internal successors, (885696), 158503 states have internal predecessors, (885696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:45:19,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:45:19,095 INFO L93 Difference]: Finished difference Result 523410 states and 2658188 transitions. [2022-01-18 03:45:19,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:45:19,095 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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 [2022-01-18 03:45:19,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:45:26,067 INFO L225 Difference]: With dead ends: 523410 [2022-01-18 03:45:26,068 INFO L226 Difference]: Without dead ends: 520766 [2022-01-18 03:45:26,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:45:26,068 INFO L933 BasicCegarLoop]: 47 mSDtfsCounter, 80 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:45:26,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 88 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:45:27,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 520766 states. [2022-01-18 03:45:43,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 520766 to 297466. [2022-01-18 03:45:44,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297466 states, 297283 states have (on average 5.295597124625357) internal successors, (1574291), 297465 states have internal predecessors, (1574291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297466 states to 297466 states and 1574291 transitions. [2022-01-18 03:45:47,743 INFO L78 Accepts]: Start accepts. Automaton has 297466 states and 1574291 transitions. Word has length 5 [2022-01-18 03:45:47,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:45:47,743 INFO L470 AbstractCegarLoop]: Abstraction has 297466 states and 1574291 transitions. [2022-01-18 03:45:47,743 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 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) [2022-01-18 03:45:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 297466 states and 1574291 transitions. [2022-01-18 03:45:47,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-01-18 03:45:47,744 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:45:47,744 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-01-18 03:45:47,744 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 03:45:47,744 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-18 03:45:47,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:45:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 978536248, now seen corresponding path program 1 times [2022-01-18 03:45:47,745 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:45:47,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303228814] [2022-01-18 03:45:47,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:45:47,745 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:45:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:45:47,778 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:45:47,779 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:45:47,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303228814] [2022-01-18 03:45:47,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303228814] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:45:47,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:45:47,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:45:47,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196464968] [2022-01-18 03:45:47,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:45:47,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:45:47,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:45:47,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:45:47,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:45:47,780 INFO L87 Difference]: Start difference. First operand 297466 states and 1574291 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:45:59,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:45:59,490 INFO L93 Difference]: Finished difference Result 675048 states and 3430058 transitions. [2022-01-18 03:45:59,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:45:59,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-01-18 03:45:59,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:46:07,582 INFO L225 Difference]: With dead ends: 675048 [2022-01-18 03:46:07,582 INFO L226 Difference]: Without dead ends: 673610 [2022-01-18 03:46:07,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:46:07,583 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 78 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:46:07,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 89 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:46:10,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 673610 states. [2022-01-18 03:46:35,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 673610 to 359773. [2022-01-18 03:46:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359773 states, 359590 states have (on average 5.301006702077366) internal successors, (1906189), 359772 states have internal predecessors, (1906189), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:46:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359773 states to 359773 states and 1906189 transitions. [2022-01-18 03:46:42,699 INFO L78 Accepts]: Start accepts. Automaton has 359773 states and 1906189 transitions. Word has length 6 [2022-01-18 03:46:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:46:42,700 INFO L470 AbstractCegarLoop]: Abstraction has 359773 states and 1906189 transitions. [2022-01-18 03:46:42,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:46:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 359773 states and 1906189 transitions. [2022-01-18 03:46:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 03:46:42,701 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:46:42,701 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:46:42,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 03:46:42,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-18 03:46:42,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:46:42,703 INFO L85 PathProgramCache]: Analyzing trace with hash 270378104, now seen corresponding path program 1 times [2022-01-18 03:46:42,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:46:42,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187758127] [2022-01-18 03:46:42,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:46:42,703 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:46:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:46:42,763 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-01-18 03:46:42,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:46:42,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187758127] [2022-01-18 03:46:42,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187758127] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:46:42,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:46:42,764 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-01-18 03:46:42,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118091501] [2022-01-18 03:46:42,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:46:42,764 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-01-18 03:46:42,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:46:42,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-01-18 03:46:42,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-01-18 03:46:42,765 INFO L87 Difference]: Start difference. First operand 359773 states and 1906189 transitions. Second operand has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-01-18 03:47:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:47:01,435 INFO L93 Difference]: Finished difference Result 825165 states and 4206398 transitions. [2022-01-18 03:47:01,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-01-18 03:47:01,453 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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 [2022-01-18 03:47:01,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:47:17,066 INFO L225 Difference]: With dead ends: 825165 [2022-01-18 03:47:17,067 INFO L226 Difference]: Without dead ends: 823264 [2022-01-18 03:47:17,067 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 0 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:47:17,068 INFO L933 BasicCegarLoop]: 48 mSDtfsCounter, 75 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:47:17,068 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 89 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:47:19,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 823264 states. [2022-01-18 03:47:45,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 823264 to 437066. [2022-01-18 03:47:46,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437066 states, 436883 states have (on average 5.306926568440521) internal successors, (2318506), 437065 states have internal predecessors, (2318506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:47:52,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437066 states to 437066 states and 2318506 transitions. [2022-01-18 03:47:52,981 INFO L78 Accepts]: Start accepts. Automaton has 437066 states and 2318506 transitions. Word has length 7 [2022-01-18 03:47:52,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:47:52,981 INFO L470 AbstractCegarLoop]: Abstraction has 437066 states and 2318506 transitions. [2022-01-18 03:47:52,981 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 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) [2022-01-18 03:47:52,982 INFO L276 IsEmpty]: Start isEmpty. Operand 437066 states and 2318506 transitions. [2022-01-18 03:47:52,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:47:52,984 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:47:52,984 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:47:52,984 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 03:47:52,984 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 4 more)] === [2022-01-18 03:47:52,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:47:52,984 INFO L85 PathProgramCache]: Analyzing trace with hash -414268605, now seen corresponding path program 1 times [2022-01-18 03:47:52,985 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:47:52,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [326249082] [2022-01-18 03:47:52,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:47:52,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:47:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:47:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:47:53,103 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:47:53,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [326249082] [2022-01-18 03:47:53,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [326249082] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:47:53,103 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:47:53,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-01-18 03:47:53,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189486041] [2022-01-18 03:47:53,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:47:53,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-01-18 03:47:53,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:47:53,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-01-18 03:47:53,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-01-18 03:47:53,104 INFO L87 Difference]: Start difference. First operand 437066 states and 2318506 transitions. Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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) [2022-01-18 03:48:25,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:25,595 INFO L93 Difference]: Finished difference Result 1288017 states and 6503888 transitions. [2022-01-18 03:48:25,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-01-18 03:48:25,596 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 4 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 [2022-01-18 03:48:25,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted.