/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_unsafe.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-bc79526 [2022-01-18 03:48:18,440 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-18 03:48:18,441 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-18 03:48:18,489 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-01-18 03:48:18,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-18 03:48:18,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-18 03:48:18,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-18 03:48:18,555 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 03:48:18,578 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-18 03:48:18,579 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-18 03:48:18,580 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-01-18 03:48:18,580 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-01-18 03:48:18,581 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-01-18 03:48:18,581 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-01-18 03:48:18,581 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-01-18 03:48:18,581 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-01-18 03:48:18,581 INFO L138 SettingsManager]: * Use SBE=true [2022-01-18 03:48:18,582 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-18 03:48:18,582 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-18 03:48:18,583 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-18 03:48:18,584 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-18 03:48:18,584 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-18 03:48:18,584 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-18 03:48:18,584 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-18 03:48:18,584 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-18 03:48:18,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:48:18,584 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-18 03:48:18,585 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-01-18 03:48:18,585 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-01-18 03:48:18,585 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-18 03:48:18,585 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-01-18 03:48:18,585 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2022-01-18 03:48:18,585 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-01-18 03:48:18,585 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-01-18 03:48:18,761 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-18 03:48:18,777 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-18 03:48:18,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-18 03:48:18,780 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-01-18 03:48:18,781 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-01-18 03:48:18,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl [2022-01-18 03:48:18,782 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/fork_loop_unsafe.bpl' [2022-01-18 03:48:18,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-18 03:48:18,803 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-01-18 03:48:18,804 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-01-18 03:48:18,804 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-01-18 03:48:18,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-01-18 03:48:18,813 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,828 INFO L137 Inliner]: procedures = 2, calls = 1, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-01-18 03:48:18,829 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-01-18 03:48:18,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-18 03:48:18,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-18 03:48:18,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-18 03:48:18,838 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,838 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,839 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,842 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,843 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-18 03:48:18,843 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-18 03:48:18,844 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-18 03:48:18,844 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-18 03:48:18,846 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/1) ... [2022-01-18 03:48:18,851 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-18 03:48:18,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:48:18,868 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 03:48:18,884 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 03:48:18,904 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-01-18 03:48:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-18 03:48:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-18 03:48:18,904 INFO L124 BoogieDeclarations]: Specification and implementation of procedure thread given in one single declaration [2022-01-18 03:48:18,904 INFO L130 BoogieDeclarations]: Found specification of procedure thread [2022-01-18 03:48:18,904 INFO L138 BoogieDeclarations]: Found implementation of procedure thread [2022-01-18 03:48:18,905 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 03:48:18,939 INFO L234 CfgBuilder]: Building ICFG [2022-01-18 03:48:18,940 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-18 03:48:18,981 INFO L275 CfgBuilder]: Performing block encoding [2022-01-18 03:48:18,986 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-18 03:48:18,986 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-18 03:48:18,987 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:48:18 BoogieIcfgContainer [2022-01-18 03:48:18,988 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-18 03:48:18,989 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-18 03:48:18,989 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-18 03:48:18,992 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-18 03:48:18,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 18.01 03:48:18" (1/2) ... [2022-01-18 03:48:18,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4061170a and model type fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.01 03:48:18, skipping insertion in model container [2022-01-18 03:48:18,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.01 03:48:18" (2/2) ... [2022-01-18 03:48:18,994 INFO L111 eAbstractionObserver]: Analyzing ICFG fork_loop_unsafe.bpl [2022-01-18 03:48:18,998 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-01-18 03:48:18,998 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-01-18 03:48:18,999 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-18 03:48:18,999 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-01-18 03:48:19,014 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,015 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,016 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,017 WARN L322 ript$VariableManager]: TermVariabe threadThread1of1ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,022 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:48:19,059 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:48:19,065 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 03:48:19,065 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-01-18 03:48:19,072 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 13 places, 10 transitions, 25 flow [2022-01-18 03:48:19,084 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,086 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 18 states have (on average 1.6666666666666667) internal successors, (30), 20 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:48:19,091 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:19,092 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:48:19,093 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:48:19,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:19,102 INFO L85 PathProgramCache]: Analyzing trace with hash 41167902, now seen corresponding path program 1 times [2022-01-18 03:48:19,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:19,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206448649] [2022-01-18 03:48:19,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:19,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:19,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:19,164 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:48:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:19,179 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:48:19,180 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:48:19,181 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 3 remaining) [2022-01-18 03:48:19,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 3 remaining) [2022-01-18 03:48:19,183 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 3 remaining) [2022-01-18 03:48:19,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-18 03:48:19,187 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-18 03:48:19,188 WARN L234 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:48:19,188 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2022-01-18 03:48:19,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,193 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,194 WARN L322 ript$VariableManager]: TermVariabe threadThread1of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,195 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,196 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,196 WARN L322 ript$VariableManager]: TermVariabe threadThread2of2ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,198 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:48:19,200 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:48:19,201 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 03:48:19,201 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-01-18 03:48:19,202 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 15 transitions, 42 flow [2022-01-18 03:48:19,219 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,220 INFO L276 IsEmpty]: Start isEmpty. Operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:48:19,221 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:19,221 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:48:19,221 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:48:19,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:19,222 INFO L85 PathProgramCache]: Analyzing trace with hash 55486442, now seen corresponding path program 1 times [2022-01-18 03:48:19,222 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:19,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749629449] [2022-01-18 03:48:19,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:19,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:19,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:19,301 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 03:48:19,302 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:19,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749629449] [2022-01-18 03:48:19,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749629449] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:19,303 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:19,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 03:48:19,303 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422817929] [2022-01-18 03:48:19,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:19,307 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 03:48:19,307 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:19,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 03:48:19,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 03:48:19,331 INFO L87 Difference]: Start difference. First operand has 112 states, 104 states have (on average 2.394230769230769) internal successors, (249), 111 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:19,428 INFO L93 Difference]: Finished difference Result 105 states and 232 transitions. [2022-01-18 03:48:19,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 03:48:19,430 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-01-18 03:48:19,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:19,438 INFO L225 Difference]: With dead ends: 105 [2022-01-18 03:48:19,438 INFO L226 Difference]: Without dead ends: 103 [2022-01-18 03:48:19,439 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:19,442 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 21 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:19,443 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 28 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:48:19,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-01-18 03:48:19,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-01-18 03:48:19,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 96 states have (on average 2.3854166666666665) internal successors, (229), 102 states have internal predecessors, (229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 229 transitions. [2022-01-18 03:48:19,526 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 229 transitions. Word has length 5 [2022-01-18 03:48:19,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:19,527 INFO L470 AbstractCegarLoop]: Abstraction has 103 states and 229 transitions. [2022-01-18 03:48:19,527 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,527 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 229 transitions. [2022-01-18 03:48:19,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 03:48:19,528 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:19,528 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2022-01-18 03:48:19,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-01-18 03:48:19,528 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT] === [2022-01-18 03:48:19,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:19,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1782753763, now seen corresponding path program 1 times [2022-01-18 03:48:19,529 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:19,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190722861] [2022-01-18 03:48:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:19,530 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:19,538 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:48:19,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:19,544 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:48:19,545 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:48:19,545 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (3 of 4 remaining) [2022-01-18 03:48:19,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 4 remaining) [2022-01-18 03:48:19,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 4 remaining) [2022-01-18 03:48:19,546 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 4 remaining) [2022-01-18 03:48:19,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-01-18 03:48:19,547 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-01-18 03:48:19,547 WARN L234 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:48:19,547 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2022-01-18 03:48:19,552 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,552 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,553 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,553 WARN L322 ript$VariableManager]: TermVariabe threadThread3of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,554 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,554 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,554 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,555 WARN L322 ript$VariableManager]: TermVariabe threadThread2of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,555 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,556 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,556 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,556 WARN L322 ript$VariableManager]: TermVariabe threadThread1of3ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:19,558 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:48:19,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:48:19,560 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 03:48:19,561 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-01-18 03:48:19,561 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 20 transitions, 61 flow [2022-01-18 03:48:19,628 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:48:19,630 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:19,630 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:48:19,631 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:19,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:19,635 INFO L85 PathProgramCache]: Analyzing trace with hash 74576642, now seen corresponding path program 1 times [2022-01-18 03:48:19,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706714067] [2022-01-18 03:48:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:19,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:19,692 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 03:48:19,692 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:19,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706714067] [2022-01-18 03:48:19,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706714067] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:19,693 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:19,693 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 03:48:19,693 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809472159] [2022-01-18 03:48:19,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:19,693 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 03:48:19,694 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:19,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 03:48:19,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 03:48:19,696 INFO L87 Difference]: Start difference. First operand has 579 states, 560 states have (on average 3.1285714285714286) internal successors, (1752), 578 states have internal predecessors, (1752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:19,773 INFO L93 Difference]: Finished difference Result 569 states and 1722 transitions. [2022-01-18 03:48:19,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 03:48:19,774 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-01-18 03:48:19,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:19,789 INFO L225 Difference]: With dead ends: 569 [2022-01-18 03:48:19,790 INFO L226 Difference]: Without dead ends: 567 [2022-01-18 03:48:19,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:19,792 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 28 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:19,793 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 33 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-01-18 03:48:19,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 567 states. [2022-01-18 03:48:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 567 to 567. [2022-01-18 03:48:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 567 states, 549 states have (on average 3.1311475409836067) internal successors, (1719), 566 states have internal predecessors, (1719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 567 states to 567 states and 1719 transitions. [2022-01-18 03:48:19,856 INFO L78 Accepts]: Start accepts. Automaton has 567 states and 1719 transitions. Word has length 5 [2022-01-18 03:48:19,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:19,856 INFO L470 AbstractCegarLoop]: Abstraction has 567 states and 1719 transitions. [2022-01-18 03:48:19,857 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:19,857 INFO L276 IsEmpty]: Start isEmpty. Operand 567 states and 1719 transitions. [2022-01-18 03:48:19,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 03:48:19,857 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:19,857 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:19,857 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-01-18 03:48:19,858 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:19,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:19,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1346641804, now seen corresponding path program 1 times [2022-01-18 03:48:19,858 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:19,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740694179] [2022-01-18 03:48:19,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:19,859 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:19,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:19,938 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:19,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:19,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740694179] [2022-01-18 03:48:19,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740694179] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:19,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:19,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:48:19,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296637159] [2022-01-18 03:48:19,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:19,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:48:19,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:19,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:48:19,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:48:19,942 INFO L87 Difference]: Start difference. First operand 567 states and 1719 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:20,126 INFO L93 Difference]: Finished difference Result 1180 states and 3596 transitions. [2022-01-18 03:48:20,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:48:20,126 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-18 03:48:20,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:20,138 INFO L225 Difference]: With dead ends: 1180 [2022-01-18 03:48:20,138 INFO L226 Difference]: Without dead ends: 1180 [2022-01-18 03:48:20,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:20,145 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 78 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:20,151 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 63 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:20,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1180 states. [2022-01-18 03:48:20,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1180 to 560. [2022-01-18 03:48:20,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 542 states have (on average 3.1273062730627306) internal successors, (1695), 559 states have internal predecessors, (1695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1695 transitions. [2022-01-18 03:48:20,201 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1695 transitions. Word has length 7 [2022-01-18 03:48:20,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:20,202 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1695 transitions. [2022-01-18 03:48:20,202 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,202 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1695 transitions. [2022-01-18 03:48:20,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:20,203 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:20,203 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:20,203 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-01-18 03:48:20,204 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:20,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:20,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1214332695, now seen corresponding path program 1 times [2022-01-18 03:48:20,205 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:20,205 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902186591] [2022-01-18 03:48:20,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:20,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:20,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:20,271 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:20,271 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:20,271 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902186591] [2022-01-18 03:48:20,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902186591] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:48:20,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028803418] [2022-01-18 03:48:20,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:20,276 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:48:20,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:48:20,284 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:48:20,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-01-18 03:48:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:20,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 03:48:20,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:48:20,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:20,408 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:48:20,459 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:20,460 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2028803418] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:48:20,460 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:48:20,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 03:48:20,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930160321] [2022-01-18 03:48:20,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:48:20,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 03:48:20,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:20,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 03:48:20,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-18 03:48:20,461 INFO L87 Difference]: Start difference. First operand 560 states and 1695 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:20,550 INFO L93 Difference]: Finished difference Result 636 states and 1874 transitions. [2022-01-18 03:48:20,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 03:48:20,551 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:20,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:20,555 INFO L225 Difference]: With dead ends: 636 [2022-01-18 03:48:20,555 INFO L226 Difference]: Without dead ends: 632 [2022-01-18 03:48:20,555 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:20,557 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 58 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:20,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 70 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:20,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-01-18 03:48:20,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 512. [2022-01-18 03:48:20,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 496 states have (on average 3.1048387096774195) internal successors, (1540), 511 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1540 transitions. [2022-01-18 03:48:20,577 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1540 transitions. Word has length 8 [2022-01-18 03:48:20,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:20,578 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1540 transitions. [2022-01-18 03:48:20,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,578 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1540 transitions. [2022-01-18 03:48:20,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:20,579 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:20,579 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:20,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-01-18 03:48:20,799 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-01-18 03:48:20,800 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:20,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:20,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1214332691, now seen corresponding path program 1 times [2022-01-18 03:48:20,800 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:20,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800738434] [2022-01-18 03:48:20,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:20,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:20,854 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 03:48:20,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:20,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800738434] [2022-01-18 03:48:20,855 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1800738434] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:20,855 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:20,855 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:48:20,855 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872092002] [2022-01-18 03:48:20,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:20,856 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:48:20,856 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:20,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:48:20,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:48:20,856 INFO L87 Difference]: Start difference. First operand 512 states and 1540 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:20,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:20,999 INFO L93 Difference]: Finished difference Result 1501 states and 4509 transitions. [2022-01-18 03:48:20,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:48:21,000 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:21,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:21,010 INFO L225 Difference]: With dead ends: 1501 [2022-01-18 03:48:21,010 INFO L226 Difference]: Without dead ends: 1492 [2022-01-18 03:48:21,011 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:21,018 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:21,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 56 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:21,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1492 states. [2022-01-18 03:48:21,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1492 to 551. [2022-01-18 03:48:21,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 535 states have (on average 3.100934579439252) internal successors, (1659), 550 states have internal predecessors, (1659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 1659 transitions. [2022-01-18 03:48:21,047 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 1659 transitions. Word has length 8 [2022-01-18 03:48:21,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:21,047 INFO L470 AbstractCegarLoop]: Abstraction has 551 states and 1659 transitions. [2022-01-18 03:48:21,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,047 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 1659 transitions. [2022-01-18 03:48:21,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:21,049 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:21,049 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:21,049 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-01-18 03:48:21,049 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:21,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:21,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1203607931, now seen corresponding path program 2 times [2022-01-18 03:48:21,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:21,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856018715] [2022-01-18 03:48:21,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:21,051 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:21,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:21,108 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 03:48:21,108 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:21,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856018715] [2022-01-18 03:48:21,108 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856018715] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:21,108 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:21,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:48:21,109 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791783694] [2022-01-18 03:48:21,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:21,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:48:21,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:21,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:48:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:48:21,112 INFO L87 Difference]: Start difference. First operand 551 states and 1659 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:21,287 INFO L93 Difference]: Finished difference Result 1316 states and 3968 transitions. [2022-01-18 03:48:21,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 03:48:21,288 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:21,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:21,296 INFO L225 Difference]: With dead ends: 1316 [2022-01-18 03:48:21,296 INFO L226 Difference]: Without dead ends: 1307 [2022-01-18 03:48:21,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-01-18 03:48:21,297 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 103 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:21,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 64 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:21,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1307 states. [2022-01-18 03:48:21,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1307 to 548. [2022-01-18 03:48:21,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 3.1090225563909772) internal successors, (1654), 547 states have internal predecessors, (1654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 1654 transitions. [2022-01-18 03:48:21,324 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 1654 transitions. Word has length 8 [2022-01-18 03:48:21,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:21,325 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 1654 transitions. [2022-01-18 03:48:21,325 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,325 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 1654 transitions. [2022-01-18 03:48:21,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:21,326 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:21,326 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:21,326 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-01-18 03:48:21,327 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:21,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:21,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1203780911, now seen corresponding path program 3 times [2022-01-18 03:48:21,328 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:21,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [303119551] [2022-01-18 03:48:21,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:21,336 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:21,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:21,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:21,394 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:21,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [303119551] [2022-01-18 03:48:21,394 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [303119551] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:21,394 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:21,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:48:21,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818567345] [2022-01-18 03:48:21,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:21,395 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 03:48:21,395 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:21,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 03:48:21,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:21,395 INFO L87 Difference]: Start difference. First operand 548 states and 1654 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:21,548 INFO L93 Difference]: Finished difference Result 1131 states and 3400 transitions. [2022-01-18 03:48:21,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 03:48:21,549 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:21,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:21,555 INFO L225 Difference]: With dead ends: 1131 [2022-01-18 03:48:21,555 INFO L226 Difference]: Without dead ends: 1116 [2022-01-18 03:48:21,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:48:21,557 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 100 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:21,558 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [100 Valid, 80 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:21,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2022-01-18 03:48:21,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 467. [2022-01-18 03:48:21,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 452 states have (on average 3.099557522123894) internal successors, (1401), 466 states have internal predecessors, (1401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 1401 transitions. [2022-01-18 03:48:21,579 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 1401 transitions. Word has length 8 [2022-01-18 03:48:21,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:21,580 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 1401 transitions. [2022-01-18 03:48:21,580 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,580 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 1401 transitions. [2022-01-18 03:48:21,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-18 03:48:21,582 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:21,582 INFO L514 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:21,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-01-18 03:48:21,582 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATION === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 1 more)] === [2022-01-18 03:48:21,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:21,582 INFO L85 PathProgramCache]: Analyzing trace with hash -1337844554, now seen corresponding path program 1 times [2022-01-18 03:48:21,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:21,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275500561] [2022-01-18 03:48:21,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:21,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:21,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:21,594 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:48:21,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:21,606 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:48:21,606 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:48:21,606 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 5 remaining) [2022-01-18 03:48:21,606 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 5 remaining) [2022-01-18 03:48:21,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 5 remaining) [2022-01-18 03:48:21,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 5 remaining) [2022-01-18 03:48:21,607 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 5 remaining) [2022-01-18 03:48:21,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-01-18 03:48:21,607 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1] [2022-01-18 03:48:21,608 WARN L234 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2022-01-18 03:48:21,608 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2022-01-18 03:48:21,613 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,614 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,619 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,619 WARN L322 ript$VariableManager]: TermVariabe threadThread3of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,620 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,620 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,620 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,620 WARN L322 ript$VariableManager]: TermVariabe threadThread1of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,621 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,621 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,621 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,621 WARN L322 ript$VariableManager]: TermVariabe threadThread2of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,622 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,622 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,622 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,622 WARN L322 ript$VariableManager]: TermVariabe threadThread4of4ForFork0_y not constructed by VariableManager. Cannot ensure absence of name clashes. [2022-01-18 03:48:21,623 INFO L148 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-01-18 03:48:21,624 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-18 03:48:21,625 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 03:48:21,625 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2022-01-18 03:48:21,626 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 25 transitions, 82 flow [2022-01-18 03:48:21,746 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,754 INFO L276 IsEmpty]: Start isEmpty. Operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-01-18 03:48:21,756 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:21,756 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-01-18 03:48:21,756 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:21,757 INFO L85 PathProgramCache]: Analyzing trace with hash 98437983, now seen corresponding path program 1 times [2022-01-18 03:48:21,757 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:21,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300758255] [2022-01-18 03:48:21,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:21,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:21,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:21,793 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 03:48:21,793 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:21,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300758255] [2022-01-18 03:48:21,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300758255] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:21,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:21,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-01-18 03:48:21,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922000551] [2022-01-18 03:48:21,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:21,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-01-18 03:48:21,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:21,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-01-18 03:48:21,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-01-18 03:48:21,817 INFO L87 Difference]: Start difference. First operand has 2938 states, 2896 states have (on average 3.883632596685083) internal successors, (11247), 2937 states have internal predecessors, (11247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:21,911 INFO L93 Difference]: Finished difference Result 2925 states and 11201 transitions. [2022-01-18 03:48:21,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-01-18 03:48:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-01-18 03:48:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:21,934 INFO L225 Difference]: With dead ends: 2925 [2022-01-18 03:48:21,934 INFO L226 Difference]: Without dead ends: 2923 [2022-01-18 03:48:21,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:21,936 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 40 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:21,936 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 37 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:21,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2923 states. [2022-01-18 03:48:22,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2923 to 2923. [2022-01-18 03:48:22,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2923 states, 2882 states have (on average 3.885496183206107) internal successors, (11198), 2922 states have internal predecessors, (11198), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2923 states to 2923 states and 11198 transitions. [2022-01-18 03:48:22,038 INFO L78 Accepts]: Start accepts. Automaton has 2923 states and 11198 transitions. Word has length 5 [2022-01-18 03:48:22,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:22,038 INFO L470 AbstractCegarLoop]: Abstraction has 2923 states and 11198 transitions. [2022-01-18 03:48:22,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.0) internal successors, (5), 5 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,039 INFO L276 IsEmpty]: Start isEmpty. Operand 2923 states and 11198 transitions. [2022-01-18 03:48:22,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-01-18 03:48:22,041 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:22,043 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:22,043 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-01-18 03:48:22,043 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:22,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:22,043 INFO L85 PathProgramCache]: Analyzing trace with hash 109398197, now seen corresponding path program 1 times [2022-01-18 03:48:22,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:22,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898877091] [2022-01-18 03:48:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:22,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:22,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:22,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:22,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:22,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898877091] [2022-01-18 03:48:22,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898877091] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:22,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:22,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:48:22,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232131315] [2022-01-18 03:48:22,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:22,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:48:22,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:22,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:48:22,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:48:22,094 INFO L87 Difference]: Start difference. First operand 2923 states and 11198 transitions. Second operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:22,282 INFO L93 Difference]: Finished difference Result 6688 states and 25812 transitions. [2022-01-18 03:48:22,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:48:22,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2022-01-18 03:48:22,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:22,329 INFO L225 Difference]: With dead ends: 6688 [2022-01-18 03:48:22,329 INFO L226 Difference]: Without dead ends: 6688 [2022-01-18 03:48:22,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:22,330 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 107 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 73 SdHoareTripleChecker+Invalid, 192 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:22,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 73 Invalid, 192 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:22,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6688 states. [2022-01-18 03:48:22,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6688 to 2913. [2022-01-18 03:48:22,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2913 states, 2872 states have (on average 3.885097493036212) internal successors, (11158), 2912 states have internal predecessors, (11158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2913 states to 2913 states and 11158 transitions. [2022-01-18 03:48:22,480 INFO L78 Accepts]: Start accepts. Automaton has 2913 states and 11158 transitions. Word has length 7 [2022-01-18 03:48:22,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:22,481 INFO L470 AbstractCegarLoop]: Abstraction has 2913 states and 11158 transitions. [2022-01-18 03:48:22,481 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,481 INFO L276 IsEmpty]: Start isEmpty. Operand 2913 states and 11158 transitions. [2022-01-18 03:48:22,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:22,481 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:22,481 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:22,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-01-18 03:48:22,481 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:22,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:22,482 INFO L85 PathProgramCache]: Analyzing trace with hash -896880757, now seen corresponding path program 1 times [2022-01-18 03:48:22,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:22,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633641525] [2022-01-18 03:48:22,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:22,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:22,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:22,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:22,514 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:22,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633641525] [2022-01-18 03:48:22,514 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1633641525] provided 0 perfect and 1 imperfect interpolant sequences [2022-01-18 03:48:22,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [131405944] [2022-01-18 03:48:22,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:22,514 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-01-18 03:48:22,514 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-18 03:48:22,516 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-01-18 03:48:22,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:22,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-01-18 03:48:22,547 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 6 conjunts are in the unsatisfiable core [2022-01-18 03:48:22,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-01-18 03:48:22,612 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:22,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-01-18 03:48:22,634 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:22,635 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [131405944] provided 0 perfect and 2 imperfect interpolant sequences [2022-01-18 03:48:22,635 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-01-18 03:48:22,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2022-01-18 03:48:22,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918896507] [2022-01-18 03:48:22,635 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-01-18 03:48:22,635 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-01-18 03:48:22,636 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:22,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-01-18 03:48:22,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2022-01-18 03:48:22,636 INFO L87 Difference]: Start difference. First operand 2913 states and 11158 transitions. Second operand has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:22,729 INFO L93 Difference]: Finished difference Result 3797 states and 14239 transitions. [2022-01-18 03:48:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-01-18 03:48:22,730 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:22,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:22,747 INFO L225 Difference]: With dead ends: 3797 [2022-01-18 03:48:22,747 INFO L226 Difference]: Without dead ends: 3793 [2022-01-18 03:48:22,747 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:22,748 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 105 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:22,748 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 59 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 110 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:22,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3793 states. [2022-01-18 03:48:22,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3793 to 2825. [2022-01-18 03:48:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2825 states, 2786 states have (on average 3.8797559224694904) internal successors, (10809), 2824 states have internal predecessors, (10809), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2825 states to 2825 states and 10809 transitions. [2022-01-18 03:48:22,862 INFO L78 Accepts]: Start accepts. Automaton has 2825 states and 10809 transitions. Word has length 8 [2022-01-18 03:48:22,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:22,863 INFO L470 AbstractCegarLoop]: Abstraction has 2825 states and 10809 transitions. [2022-01-18 03:48:22,863 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.5) internal successors, (15), 10 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:22,863 INFO L276 IsEmpty]: Start isEmpty. Operand 2825 states and 10809 transitions. [2022-01-18 03:48:22,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:22,863 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:22,863 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:22,889 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-01-18 03:48:23,083 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-01-18 03:48:23,084 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:23,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:23,084 INFO L85 PathProgramCache]: Analyzing trace with hash -896880753, now seen corresponding path program 1 times [2022-01-18 03:48:23,084 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:23,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818156765] [2022-01-18 03:48:23,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:23,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:23,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:23,165 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 03:48:23,165 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:23,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818156765] [2022-01-18 03:48:23,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818156765] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:23,166 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:23,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:48:23,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846224984] [2022-01-18 03:48:23,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:23,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:48:23,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:23,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:48:23,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:48:23,169 INFO L87 Difference]: Start difference. First operand 2825 states and 10809 transitions. Second operand has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:23,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:23,338 INFO L93 Difference]: Finished difference Result 8111 states and 30991 transitions. [2022-01-18 03:48:23,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:48:23,339 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:23,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:23,379 INFO L225 Difference]: With dead ends: 8111 [2022-01-18 03:48:23,380 INFO L226 Difference]: Without dead ends: 8102 [2022-01-18 03:48:23,380 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:23,381 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 112 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 145 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:23,381 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 63 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 145 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:23,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8102 states. [2022-01-18 03:48:23,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8102 to 2882. [2022-01-18 03:48:23,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2882 states, 2843 states have (on average 3.875483644037988) internal successors, (11018), 2881 states have internal predecessors, (11018), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:23,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2882 states to 2882 states and 11018 transitions. [2022-01-18 03:48:23,525 INFO L78 Accepts]: Start accepts. Automaton has 2882 states and 11018 transitions. Word has length 8 [2022-01-18 03:48:23,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:23,525 INFO L470 AbstractCegarLoop]: Abstraction has 2882 states and 11018 transitions. [2022-01-18 03:48:23,525 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 6 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:23,526 INFO L276 IsEmpty]: Start isEmpty. Operand 2882 states and 11018 transitions. [2022-01-18 03:48:23,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2022-01-18 03:48:23,526 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:23,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:23,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-01-18 03:48:23,526 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:23,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:23,527 INFO L85 PathProgramCache]: Analyzing trace with hash -903626973, now seen corresponding path program 2 times [2022-01-18 03:48:23,527 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:23,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562876186] [2022-01-18 03:48:23,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:23,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:23,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:23,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:23,567 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:23,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562876186] [2022-01-18 03:48:23,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562876186] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:23,567 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:23,567 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:48:23,567 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851916987] [2022-01-18 03:48:23,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:23,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 03:48:23,568 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:23,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 03:48:23,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:23,568 INFO L87 Difference]: Start difference. First operand 2882 states and 11018 transitions. Second operand has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:23,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:23,791 INFO L93 Difference]: Finished difference Result 6467 states and 24842 transitions. [2022-01-18 03:48:23,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-01-18 03:48:23,791 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2022-01-18 03:48:23,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:23,820 INFO L225 Difference]: With dead ends: 6467 [2022-01-18 03:48:23,820 INFO L226 Difference]: Without dead ends: 6452 [2022-01-18 03:48:23,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2022-01-18 03:48:23,821 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 152 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:23,821 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [152 Valid, 100 Invalid, 263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:23,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6452 states. [2022-01-18 03:48:23,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6452 to 2743. [2022-01-18 03:48:23,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2743 states, 2705 states have (on average 3.878743068391867) internal successors, (10492), 2742 states have internal predecessors, (10492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2743 states to 2743 states and 10492 transitions. [2022-01-18 03:48:23,929 INFO L78 Accepts]: Start accepts. Automaton has 2743 states and 10492 transitions. Word has length 8 [2022-01-18 03:48:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:23,929 INFO L470 AbstractCegarLoop]: Abstraction has 2743 states and 10492 transitions. [2022-01-18 03:48:23,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 2743 states and 10492 transitions. [2022-01-18 03:48:23,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-01-18 03:48:23,929 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:23,930 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:23,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-01-18 03:48:23,930 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:23,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:23,930 INFO L85 PathProgramCache]: Analyzing trace with hash 2052106956, now seen corresponding path program 1 times [2022-01-18 03:48:23,930 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:23,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423107501] [2022-01-18 03:48:23,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:23,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:23,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:23,973 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:23,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:23,973 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423107501] [2022-01-18 03:48:23,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423107501] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:23,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:23,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:48:23,974 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16325540] [2022-01-18 03:48:23,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:23,974 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 03:48:23,974 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:23,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 03:48:23,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:23,974 INFO L87 Difference]: Start difference. First operand 2743 states and 10492 transitions. Second operand has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:24,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:24,201 INFO L93 Difference]: Finished difference Result 6277 states and 24190 transitions. [2022-01-18 03:48:24,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 03:48:24,202 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2022-01-18 03:48:24,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:24,228 INFO L225 Difference]: With dead ends: 6277 [2022-01-18 03:48:24,229 INFO L226 Difference]: Without dead ends: 6277 [2022-01-18 03:48:24,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-01-18 03:48:24,230 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 103 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:24,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 102 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:24,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6277 states. [2022-01-18 03:48:24,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6277 to 2736. [2022-01-18 03:48:24,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2736 states, 2698 states have (on average 3.8773165307635287) internal successors, (10461), 2735 states have internal predecessors, (10461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2736 states to 2736 states and 10461 transitions. [2022-01-18 03:48:24,321 INFO L78 Accepts]: Start accepts. Automaton has 2736 states and 10461 transitions. Word has length 9 [2022-01-18 03:48:24,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:24,321 INFO L470 AbstractCegarLoop]: Abstraction has 2736 states and 10461 transitions. [2022-01-18 03:48:24,321 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.2857142857142858) internal successors, (9), 7 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:24,321 INFO L276 IsEmpty]: Start isEmpty. Operand 2736 states and 10461 transitions. [2022-01-18 03:48:24,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-18 03:48:24,322 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:24,322 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:24,322 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-01-18 03:48:24,322 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:24,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:24,322 INFO L85 PathProgramCache]: Analyzing trace with hash 1385677606, now seen corresponding path program 1 times [2022-01-18 03:48:24,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:24,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224206098] [2022-01-18 03:48:24,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:24,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:24,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-01-18 03:48:24,360 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:24,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224206098] [2022-01-18 03:48:24,360 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224206098] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:24,360 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:24,360 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-01-18 03:48:24,361 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170203183] [2022-01-18 03:48:24,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:24,361 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-01-18 03:48:24,361 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:24,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-01-18 03:48:24,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-01-18 03:48:24,361 INFO L87 Difference]: Start difference. First operand 2736 states and 10461 transitions. Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:24,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:24,556 INFO L93 Difference]: Finished difference Result 8835 states and 33985 transitions. [2022-01-18 03:48:24,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-01-18 03:48:24,557 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-18 03:48:24,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:24,589 INFO L225 Difference]: With dead ends: 8835 [2022-01-18 03:48:24,590 INFO L226 Difference]: Without dead ends: 8835 [2022-01-18 03:48:24,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-01-18 03:48:24,590 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 117 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:24,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [117 Valid, 78 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:24,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8835 states. [2022-01-18 03:48:24,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8835 to 2826. [2022-01-18 03:48:24,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2826 states, 2788 states have (on average 3.8812769010043042) internal successors, (10821), 2825 states have internal predecessors, (10821), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:24,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2826 states to 2826 states and 10821 transitions. [2022-01-18 03:48:24,716 INFO L78 Accepts]: Start accepts. Automaton has 2826 states and 10821 transitions. Word has length 10 [2022-01-18 03:48:24,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:24,716 INFO L470 AbstractCegarLoop]: Abstraction has 2826 states and 10821 transitions. [2022-01-18 03:48:24,716 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:24,716 INFO L276 IsEmpty]: Start isEmpty. Operand 2826 states and 10821 transitions. [2022-01-18 03:48:24,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-01-18 03:48:24,717 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:24,717 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:24,717 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-01-18 03:48:24,717 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:24,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:24,718 INFO L85 PathProgramCache]: Analyzing trace with hash -809193628, now seen corresponding path program 2 times [2022-01-18 03:48:24,718 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:24,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471702168] [2022-01-18 03:48:24,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:24,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:24,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:24,758 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-01-18 03:48:24,758 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:24,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471702168] [2022-01-18 03:48:24,758 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471702168] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:24,758 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:24,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-01-18 03:48:24,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873581499] [2022-01-18 03:48:24,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:24,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-01-18 03:48:24,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:24,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-01-18 03:48:24,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-01-18 03:48:24,760 INFO L87 Difference]: Start difference. First operand 2826 states and 10821 transitions. Second operand has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:25,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:25,016 INFO L93 Difference]: Finished difference Result 6224 states and 23945 transitions. [2022-01-18 03:48:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-01-18 03:48:25,017 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-01-18 03:48:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:25,044 INFO L225 Difference]: With dead ends: 6224 [2022-01-18 03:48:25,044 INFO L226 Difference]: Without dead ends: 6224 [2022-01-18 03:48:25,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=213, Unknown=0, NotChecked=0, Total=306 [2022-01-18 03:48:25,045 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 131 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 296 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 131 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:25,045 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [131 Valid, 122 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 296 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-01-18 03:48:25,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6224 states. [2022-01-18 03:48:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6224 to 2678. [2022-01-18 03:48:25,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2678 states, 2640 states have (on average 3.8700757575757576) internal successors, (10217), 2677 states have internal predecessors, (10217), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:25,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2678 states to 2678 states and 10217 transitions. [2022-01-18 03:48:25,174 INFO L78 Accepts]: Start accepts. Automaton has 2678 states and 10217 transitions. Word has length 10 [2022-01-18 03:48:25,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:25,174 INFO L470 AbstractCegarLoop]: Abstraction has 2678 states and 10217 transitions. [2022-01-18 03:48:25,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.25) internal successors, (10), 8 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:25,175 INFO L276 IsEmpty]: Start isEmpty. Operand 2678 states and 10217 transitions. [2022-01-18 03:48:25,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-18 03:48:25,175 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:25,175 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:25,176 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-01-18 03:48:25,176 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:25,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:25,176 INFO L85 PathProgramCache]: Analyzing trace with hash 16748196, now seen corresponding path program 1 times [2022-01-18 03:48:25,176 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:25,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927644995] [2022-01-18 03:48:25,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:25,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-01-18 03:48:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-01-18 03:48:25,208 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-01-18 03:48:25,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927644995] [2022-01-18 03:48:25,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927644995] provided 1 perfect and 0 imperfect interpolant sequences [2022-01-18 03:48:25,209 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-01-18 03:48:25,209 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-01-18 03:48:25,209 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396141199] [2022-01-18 03:48:25,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-01-18 03:48:25,209 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-01-18 03:48:25,209 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-01-18 03:48:25,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-01-18 03:48:25,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-01-18 03:48:25,210 INFO L87 Difference]: Start difference. First operand 2678 states and 10217 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-01-18 03:48:25,365 INFO L93 Difference]: Finished difference Result 8630 states and 32968 transitions. [2022-01-18 03:48:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-01-18 03:48:25,365 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2022-01-18 03:48:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-01-18 03:48:25,399 INFO L225 Difference]: With dead ends: 8630 [2022-01-18 03:48:25,399 INFO L226 Difference]: Without dead ends: 8618 [2022-01-18 03:48:25,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-01-18 03:48:25,400 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 118 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-01-18 03:48:25,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 66 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-01-18 03:48:25,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8618 states. [2022-01-18 03:48:25,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8618 to 2869. [2022-01-18 03:48:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2869 states, 2831 states have (on average 3.8562345460967857) internal successors, (10917), 2868 states have internal predecessors, (10917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2869 states to 2869 states and 10917 transitions. [2022-01-18 03:48:25,529 INFO L78 Accepts]: Start accepts. Automaton has 2869 states and 10917 transitions. Word has length 11 [2022-01-18 03:48:25,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-01-18 03:48:25,530 INFO L470 AbstractCegarLoop]: Abstraction has 2869 states and 10917 transitions. [2022-01-18 03:48:25,530 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-01-18 03:48:25,530 INFO L276 IsEmpty]: Start isEmpty. Operand 2869 states and 10917 transitions. [2022-01-18 03:48:25,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-18 03:48:25,530 INFO L506 BasicCegarLoop]: Found error trace [2022-01-18 03:48:25,531 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:25,531 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-01-18 03:48:25,531 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting threadErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATION, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT, threadErr0ASSERT_VIOLATIONASSERT (and 2 more)] === [2022-01-18 03:48:25,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-18 03:48:25,531 INFO L85 PathProgramCache]: Analyzing trace with hash 16748200, now seen corresponding path program 1 times [2022-01-18 03:48:25,531 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-18 03:48:25,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122285897] [2022-01-18 03:48:25,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-18 03:48:25,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-18 03:48:25,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:25,535 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-18 03:48:25,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-18 03:48:25,538 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-18 03:48:25,538 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-18 03:48:25,539 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location threadErr0ASSERT_VIOLATIONASSERT (5 of 6 remaining) [2022-01-18 03:48:25,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION (4 of 6 remaining) [2022-01-18 03:48:25,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (3 of 6 remaining) [2022-01-18 03:48:25,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (2 of 6 remaining) [2022-01-18 03:48:25,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (1 of 6 remaining) [2022-01-18 03:48:25,539 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location threadErr0ASSERT_VIOLATIONASSERT (0 of 6 remaining) [2022-01-18 03:48:25,539 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-01-18 03:48:25,540 INFO L732 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2022-01-18 03:48:25,543 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 4 thread instances [2022-01-18 03:48:25,543 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2022-01-18 03:48:25,553 INFO L202 PluginConnector]: Adding new model fork_loop_unsafe.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.01 03:48:25 BasicIcfg [2022-01-18 03:48:25,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-18 03:48:25,554 INFO L158 Benchmark]: Toolchain (without parser) took 6750.96ms. Allocated memory was 339.7MB in the beginning and 618.7MB in the end (delta: 278.9MB). Free memory was 302.3MB in the beginning and 396.1MB in the end (delta: -93.8MB). Peak memory consumption was 188.1MB. Max. memory is 16.0GB. [2022-01-18 03:48:25,554 INFO L158 Benchmark]: Boogie PL CUP Parser took 0.11ms. Allocated memory is still 339.7MB. Free memory was 303.4MB in the beginning and 303.2MB in the end (delta: 162.3kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:48:25,554 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.96ms. Allocated memory is still 339.7MB. Free memory was 302.3MB in the beginning and 300.8MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2022-01-18 03:48:25,554 INFO L158 Benchmark]: Boogie Preprocessor took 10.71ms. Allocated memory is still 339.7MB. Free memory was 300.8MB in the beginning and 299.9MB in the end (delta: 903.1kB). There was no memory consumed. Max. memory is 16.0GB. [2022-01-18 03:48:25,554 INFO L158 Benchmark]: RCFGBuilder took 144.13ms. Allocated memory is still 339.7MB. Free memory was 299.7MB in the beginning and 291.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. [2022-01-18 03:48:25,555 INFO L158 Benchmark]: TraceAbstraction took 6564.25ms. Allocated memory was 339.7MB in the beginning and 618.7MB in the end (delta: 278.9MB). Free memory was 291.2MB in the beginning and 396.1MB in the end (delta: -104.8MB). Peak memory consumption was 175.6MB. Max. memory is 16.0GB. [2022-01-18 03:48:25,556 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Boogie PL CUP Parser took 0.11ms. Allocated memory is still 339.7MB. Free memory was 303.4MB in the beginning and 303.2MB in the end (delta: 162.3kB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.96ms. Allocated memory is still 339.7MB. Free memory was 302.3MB in the beginning and 300.8MB in the end (delta: 1.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 10.71ms. Allocated memory is still 339.7MB. Free memory was 300.8MB in the beginning and 299.9MB in the end (delta: 903.1kB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 144.13ms. Allocated memory is still 339.7MB. Free memory was 299.7MB in the beginning and 291.7MB in the end (delta: 8.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.0GB. * TraceAbstraction took 6564.25ms. Allocated memory was 339.7MB in the beginning and 618.7MB in the end (delta: 278.9MB). Free memory was 291.2MB in the beginning and 396.1MB in the end (delta: -104.8MB). Peak memory consumption was 175.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 17]: assertion can be violated assertion can be violated We found a FailurePath: [L24] 0 x := 0; VAL [x=0] [L25] 0 i := 0; VAL [i=0, x=0] [L28] FORK 0 fork i thread(i); VAL [i=0, x=0, y=0] [L16] 1 x := x + 1; VAL [i=0, x=1, y=0] [L29] 0 i := i + 1; VAL [i=1, x=1, y=0] [L28] FORK 0 fork i thread(i); VAL [i=1, x=1, y=0] [L16] 2 x := x + 1; VAL [i=1, x=2, y=0] [L29] 0 i := i + 1; VAL [i=2, x=2, y=0] [L28] FORK 0 fork i thread(i); VAL [i=2, x=2, y=0] [L16] 3 x := x + 1; VAL [i=2, x=3, y=0] [L17] 1 assert x <= y + 2; VAL [i=2, x=3, y=0] - UnprovableResult [Line: 27]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 16 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 5 NumberOfCodeBlocks, 5 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 21 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 21 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 21 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 23 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 39 IncrementalHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 7 mSDtfsCounter, 39 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 6 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=0, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 14 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 3 thread instances CFG has 5 procedures, 26 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 454 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 454 mSDsluCounter, 366 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 315 mSDsCounter, 106 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 714 IncrementalHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 106 mSolverCounterUnsat, 74 mSDtfsCounter, 714 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=579occurred in iteration=0, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 6 MinimizatonAttempts, 3089 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 61 NumberOfCodeBlocks, 61 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 52 ConstructedInterpolants, 0 QuantifiedInterpolants, 216 SizeOfPredicates, 1 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 8 InterpolantComputations, 5 PerfectInterpolantSequences, 4/7 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 4 thread instances CFG has 6 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 3.9s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 985 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 985 mSDsluCounter, 700 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 610 mSDsCounter, 246 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1633 IncrementalHoareTripleChecker+Invalid, 1879 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 246 mSolverCounterUnsat, 138 mSDtfsCounter, 1633 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 114 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 99 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2938occurred in iteration=0, InterpolantAutomatonStates: 95, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 32517 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 95 NumberOfCodeBlocks, 95 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 331 SizeOfPredicates, 1 NumberOfNonLiveVariables, 21 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 11 InterpolantComputations, 8 PerfectInterpolantSequences, 19/22 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-01-18 03:48:25,589 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...