/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf -tc ../../../trunk/examples/toolchains/AutomizerBplInline.xml -i ../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.mcr-reduction-c7b2d19 [2022-03-15 20:35:21,360 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-15 20:35:21,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-15 20:35:21,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-15 20:35:21,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-15 20:35:21,407 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-15 20:35:21,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-15 20:35:21,411 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-15 20:35:21,412 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-15 20:35:21,415 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-15 20:35:21,416 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-15 20:35:21,417 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-15 20:35:21,417 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-15 20:35:21,419 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-15 20:35:21,420 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-15 20:35:21,422 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-15 20:35:21,423 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-15 20:35:21,423 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-15 20:35:21,424 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-15 20:35:21,428 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-15 20:35:21,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-15 20:35:21,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-15 20:35:21,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-15 20:35:21,431 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-15 20:35:21,436 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-15 20:35:21,442 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-15 20:35:21,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-15 20:35:21,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-15 20:35:21,443 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/mcr/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-McrAutomaton-WP.epf [2022-03-15 20:35:21,465 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-15 20:35:21,465 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-15 20:35:21,466 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-15 20:35:21,466 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-15 20:35:21,466 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-15 20:35:21,467 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-15 20:35:21,467 INFO L138 SettingsManager]: * Use SBE=true [2022-03-15 20:35:21,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-15 20:35:21,467 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-15 20:35:21,467 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-15 20:35:21,467 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-15 20:35:21,468 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-15 20:35:21,468 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-15 20:35:21,469 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:21,469 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-15 20:35:21,469 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-15 20:35:21,469 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-15 20:35:21,470 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-15 20:35:21,470 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-15 20:35:21,470 INFO L138 SettingsManager]: * Override the interpolant automaton setting of the refinement strategy=true [2022-03-15 20:35:21,470 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=VARIABLE_BASED_MOVER_CHECK [2022-03-15 20:35:21,470 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-15 20:35:21,470 INFO L138 SettingsManager]: * Interpolant automaton=MCR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-03-15 20:35:21,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-15 20:35:21,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-15 20:35:21,671 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-15 20:35:21,672 INFO L271 PluginConnector]: Initializing Boogie PL CUP Parser... [2022-03-15 20:35:21,673 INFO L275 PluginConnector]: Boogie PL CUP Parser initialized [2022-03-15 20:35:21,673 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl [2022-03-15 20:35:21,674 INFO L110 BoogieParser]: Parsing: '/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/concurrent/bpl/mcr/example_11.bpl' [2022-03-15 20:35:21,695 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-15 20:35:21,697 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-15 20:35:21,698 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:21,698 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-03-15 20:35:21,698 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-03-15 20:35:21,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,711 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,716 INFO L137 Inliner]: procedures = 12, calls = 11, calls flagged for inlining = 0, calls inlined = 0, statements flattened = 0 [2022-03-15 20:35:21,717 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-03-15 20:35:21,719 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-15 20:35:21,719 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-15 20:35:21,719 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-15 20:35:21,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,727 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,727 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,728 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-15 20:35:21,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-15 20:35:21,729 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-15 20:35:21,729 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-15 20:35:21,730 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/1) ... [2022-03-15 20:35:21,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-15 20:35:21,742 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-15 20:35:21,754 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) [2022-03-15 20:35:21,776 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 [2022-03-15 20:35:21,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_1 given in one single declaration [2022-03-15 20:35:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure set_1 [2022-03-15 20:35:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure set_1 [2022-03-15 20:35:21,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_2 given in one single declaration [2022-03-15 20:35:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure set_2 [2022-03-15 20:35:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure set_2 [2022-03-15 20:35:21,811 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_3 given in one single declaration [2022-03-15 20:35:21,811 INFO L130 BoogieDeclarations]: Found specification of procedure set_3 [2022-03-15 20:35:21,811 INFO L138 BoogieDeclarations]: Found implementation of procedure set_3 [2022-03-15 20:35:21,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_4 given in one single declaration [2022-03-15 20:35:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure set_4 [2022-03-15 20:35:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure set_4 [2022-03-15 20:35:21,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_0 given in one single declaration [2022-03-15 20:35:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure set_0 [2022-03-15 20:35:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure set_0 [2022-03-15 20:35:21,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_9 given in one single declaration [2022-03-15 20:35:21,812 INFO L130 BoogieDeclarations]: Found specification of procedure set_9 [2022-03-15 20:35:21,812 INFO L138 BoogieDeclarations]: Found implementation of procedure set_9 [2022-03-15 20:35:21,812 INFO L124 BoogieDeclarations]: Specification and implementation of procedure ULTIMATE.start given in one single declaration [2022-03-15 20:35:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-15 20:35:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-15 20:35:21,813 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_5 given in one single declaration [2022-03-15 20:35:21,813 INFO L130 BoogieDeclarations]: Found specification of procedure set_5 [2022-03-15 20:35:21,813 INFO L138 BoogieDeclarations]: Found implementation of procedure set_5 [2022-03-15 20:35:21,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_6 given in one single declaration [2022-03-15 20:35:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_6 [2022-03-15 20:35:21,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_6 [2022-03-15 20:35:21,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_10 given in one single declaration [2022-03-15 20:35:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_10 [2022-03-15 20:35:21,814 INFO L138 BoogieDeclarations]: Found implementation of procedure set_10 [2022-03-15 20:35:21,814 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_7 given in one single declaration [2022-03-15 20:35:21,814 INFO L130 BoogieDeclarations]: Found specification of procedure set_7 [2022-03-15 20:35:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_7 [2022-03-15 20:35:21,815 INFO L124 BoogieDeclarations]: Specification and implementation of procedure set_8 given in one single declaration [2022-03-15 20:35:21,815 INFO L130 BoogieDeclarations]: Found specification of procedure set_8 [2022-03-15 20:35:21,815 INFO L138 BoogieDeclarations]: Found implementation of procedure set_8 [2022-03-15 20:35:21,815 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-03-15 20:35:21,850 INFO L234 CfgBuilder]: Building ICFG [2022-03-15 20:35:21,851 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-15 20:35:21,927 INFO L275 CfgBuilder]: Performing block encoding [2022-03-15 20:35:21,932 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-15 20:35:21,932 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-15 20:35:21,933 INFO L202 PluginConnector]: Adding new model example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:21 BoogieIcfgContainer [2022-03-15 20:35:21,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-15 20:35:21,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-15 20:35:21,935 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-15 20:35:21,944 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-15 20:35:21,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.boogie.parser AST 15.03 08:35:21" (1/2) ... [2022-03-15 20:35:21,946 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ad6e56 and model type example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.03 08:35:21, skipping insertion in model container [2022-03-15 20:35:21,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "example_11.bpl de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.03 08:35:21" (2/2) ... [2022-03-15 20:35:21,947 INFO L111 eAbstractionObserver]: Analyzing ICFG example_11.bpl [2022-03-15 20:35:21,950 WARN L150 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-03-15 20:35:21,951 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-15 20:35:21,951 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-15 20:35:21,951 INFO L534 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-03-15 20:35:22,050 INFO L148 ThreadInstanceAdder]: Constructed 121 joinOtherThreadTransitions. [2022-03-15 20:35:22,082 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-15 20:35:22,087 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=MCR, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mLazyFiniteAutomaton=false, 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=true, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR, mMcrOptimizeForkJoin=true, mMcrOverapproximateWrwc=true [2022-03-15 20:35:22,087 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-03-15 20:35:22,096 INFO L126 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2022-03-15 20:35:22,104 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 168 transitions, 754 flow [2022-03-15 20:35:22,106 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 168 transitions, 754 flow [2022-03-15 20:35:22,107 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 92 places, 168 transitions, 754 flow [2022-03-15 20:35:22,930 INFO L129 PetriNetUnfolder]: 9217/11300 cut-off events. [2022-03-15 20:35:22,931 INFO L130 PetriNetUnfolder]: For 11264/11264 co-relation queries the response was YES. [2022-03-15 20:35:22,960 INFO L84 FinitePrefix]: Finished finitePrefix Result has 22598 conditions, 11300 events. 9217/11300 cut-off events. For 11264/11264 co-relation queries the response was YES. Maximal size of possible extension queue 526. Compared 45044 event pairs, 0 based on Foata normal form. 0/11299 useless extension candidates. Maximal degree in co-relation 10292. Up to 2772 conditions per place. [2022-03-15 20:35:23,055 INFO L116 LiptonReduction]: Number of co-enabled transitions 5060 [2022-03-15 20:35:23,242 INFO L131 LiptonReduction]: Checked pairs total: 26356 [2022-03-15 20:35:23,242 INFO L133 LiptonReduction]: Total number of compositions: 12 [2022-03-15 20:35:23,250 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 80 places, 156 transitions, 730 flow [2022-03-15 20:35:35,617 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 179195 states, 179194 states have (on average 7.3124267553601126) internal successors, (1310343), 179194 states have internal predecessors, (1310343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:35,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 179195 states, 179194 states have (on average 7.3124267553601126) internal successors, (1310343), 179194 states have internal predecessors, (1310343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:35:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:35:37,605 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:35:37,606 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:35:37,607 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:35:37,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:35:37,614 INFO L85 PathProgramCache]: Analyzing trace with hash 1674361310, now seen corresponding path program 1 times [2022-03-15 20:35:37,663 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:35:37,663 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846607093] [2022-03-15 20:35:37,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:35:37,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:35:37,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:35:38,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:35:38,007 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:35:38,007 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846607093] [2022-03-15 20:35:38,007 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846607093] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:35:38,007 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:35:38,007 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:35:38,008 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1992479377] [2022-03-15 20:35:38,009 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:35:38,013 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:35:39,398 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:35:39,398 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:36:06,625 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [358488#(not (= set_2Thread1of1ForFork9_thidvar0 0))] [2022-03-15 20:36:06,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:36:06,627 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:36:06,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:36:06,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:36:07,117 INFO L87 Difference]: Start difference. First operand has 179195 states, 179194 states have (on average 7.3124267553601126) internal successors, (1310343), 179194 states have internal predecessors, (1310343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:36:10,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:36:10,360 INFO L93 Difference]: Finished difference Result 173051 states and 1247879 transitions. [2022-03-15 20:36:10,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:36:10,364 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 20:36:10,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:36:13,089 INFO L225 Difference]: With dead ends: 173051 [2022-03-15 20:36:13,090 INFO L226 Difference]: Without dead ends: 173051 [2022-03-15 20:36:13,091 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:36:13,095 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 129 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:36:13,097 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 1 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:36:13,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173051 states. [2022-03-15 20:36:23,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173051 to 173051. [2022-03-15 20:36:23,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173051 states, 173050 states have (on average 7.211089280554753) internal successors, (1247879), 173050 states have internal predecessors, (1247879), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:36:25,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173051 states to 173051 states and 1247879 transitions. [2022-03-15 20:36:25,790 INFO L78 Accepts]: Start accepts. Automaton has 173051 states and 1247879 transitions. Word has length 34 [2022-03-15 20:36:25,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:36:25,791 INFO L470 AbstractCegarLoop]: Abstraction has 173051 states and 1247879 transitions. [2022-03-15 20:36:25,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:36:25,792 INFO L276 IsEmpty]: Start isEmpty. Operand 173051 states and 1247879 transitions. [2022-03-15 20:36:26,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:36:26,935 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:36:26,935 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:36:26,935 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-15 20:36:26,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:36:26,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:36:26,936 INFO L85 PathProgramCache]: Analyzing trace with hash -574007650, now seen corresponding path program 1 times [2022-03-15 20:36:26,937 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:36:26,937 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306277324] [2022-03-15 20:36:26,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:36:26,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:36:26,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:36:26,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:36:26,970 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:36:26,970 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306277324] [2022-03-15 20:36:26,970 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306277324] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:36:26,970 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:36:26,970 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:36:26,970 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1992323602] [2022-03-15 20:36:26,971 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:36:26,973 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:36:27,888 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:36:27,888 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:36:51,111 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [877645#(not (= set_5Thread1of1ForFork1_thidvar0 0))] [2022-03-15 20:36:51,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:36:51,112 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:36:51,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:36:51,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:36:51,113 INFO L87 Difference]: Start difference. First operand 173051 states and 1247879 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:36:53,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:36:53,217 INFO L93 Difference]: Finished difference Result 127099 states and 872711 transitions. [2022-03-15 20:36:53,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:36:53,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 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 34 [2022-03-15 20:36:53,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:36:55,395 INFO L225 Difference]: With dead ends: 127099 [2022-03-15 20:36:55,395 INFO L226 Difference]: Without dead ends: 127099 [2022-03-15 20:36:55,396 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:36:55,396 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 121 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:36:55,397 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 1 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:36:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127099 states. [2022-03-15 20:37:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127099 to 127099. [2022-03-15 20:37:03,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127099 states, 127098 states have (on average 6.8664416434562305) internal successors, (872711), 127098 states have internal predecessors, (872711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:37:05,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127099 states to 127099 states and 872711 transitions. [2022-03-15 20:37:05,447 INFO L78 Accepts]: Start accepts. Automaton has 127099 states and 872711 transitions. Word has length 34 [2022-03-15 20:37:05,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:37:05,447 INFO L470 AbstractCegarLoop]: Abstraction has 127099 states and 872711 transitions. [2022-03-15 20:37:05,448 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:37:05,448 INFO L276 IsEmpty]: Start isEmpty. Operand 127099 states and 872711 transitions. [2022-03-15 20:37:06,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:37:06,649 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:37:06,649 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:37:06,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-15 20:37:06,649 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:37:06,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:37:06,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1079596066, now seen corresponding path program 1 times [2022-03-15 20:37:06,651 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:37:06,652 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114590674] [2022-03-15 20:37:06,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:37:06,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:37:06,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:37:06,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:37:06,708 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:37:06,709 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114590674] [2022-03-15 20:37:06,709 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114590674] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:37:06,709 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:37:06,709 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:37:06,709 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [518270438] [2022-03-15 20:37:06,709 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:37:06,712 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:37:07,641 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:37:07,642 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:37:34,165 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1258946#(not (= set_7Thread1of1ForFork3_thidvar0 0))] [2022-03-15 20:37:34,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:37:34,166 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:37:34,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:37:34,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:37:34,167 INFO L87 Difference]: Start difference. First operand 127099 states and 872711 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:37:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:37:35,554 INFO L93 Difference]: Finished difference Result 82523 states and 549031 transitions. [2022-03-15 20:37:35,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:37:35,554 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 34 [2022-03-15 20:37:35,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:37:36,273 INFO L225 Difference]: With dead ends: 82523 [2022-03-15 20:37:36,273 INFO L226 Difference]: Without dead ends: 82523 [2022-03-15 20:37:36,274 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:37:36,277 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 112 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:37:36,278 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 1 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:37:36,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82523 states. [2022-03-15 20:37:40,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82523 to 82523. [2022-03-15 20:37:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82523 states, 82522 states have (on average 6.653147039577325) internal successors, (549031), 82522 states have internal predecessors, (549031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:37:41,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82523 states to 82523 states and 549031 transitions. [2022-03-15 20:37:41,175 INFO L78 Accepts]: Start accepts. Automaton has 82523 states and 549031 transitions. Word has length 34 [2022-03-15 20:37:41,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:37:41,177 INFO L470 AbstractCegarLoop]: Abstraction has 82523 states and 549031 transitions. [2022-03-15 20:37:41,179 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:37:41,180 INFO L276 IsEmpty]: Start isEmpty. Operand 82523 states and 549031 transitions. [2022-03-15 20:37:41,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:37:41,793 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:37:41,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:37:41,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-15 20:37:41,793 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:37:41,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:37:41,796 INFO L85 PathProgramCache]: Analyzing trace with hash 736138456, now seen corresponding path program 1 times [2022-03-15 20:37:41,797 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:37:41,807 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266303453] [2022-03-15 20:37:41,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:37:41,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:37:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:37:41,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:37:41,826 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:37:41,826 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266303453] [2022-03-15 20:37:41,826 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266303453] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:37:41,826 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:37:41,826 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:37:41,826 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [574722085] [2022-03-15 20:37:41,826 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:37:41,829 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:37:42,758 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:37:42,759 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:38:08,516 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1506519#(not (= set_8Thread1of1ForFork4_thidvar0 0))] [2022-03-15 20:38:08,516 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:38:08,516 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:38:08,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:38:08,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:38:08,517 INFO L87 Difference]: Start difference. First operand 82523 states and 549031 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:09,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:38:09,187 INFO L93 Difference]: Finished difference Result 52763 states and 342375 transitions. [2022-03-15 20:38:09,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:38:09,188 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 34 [2022-03-15 20:38:09,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:38:09,807 INFO L225 Difference]: With dead ends: 52763 [2022-03-15 20:38:09,808 INFO L226 Difference]: Without dead ends: 52763 [2022-03-15 20:38:09,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:38:09,810 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 103 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:38:09,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:38:09,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52763 states. [2022-03-15 20:38:11,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52763 to 52763. [2022-03-15 20:38:11,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52763 states, 52762 states have (on average 6.4890451461278955) internal successors, (342375), 52762 states have internal predecessors, (342375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:12,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52763 states to 52763 states and 342375 transitions. [2022-03-15 20:38:12,558 INFO L78 Accepts]: Start accepts. Automaton has 52763 states and 342375 transitions. Word has length 34 [2022-03-15 20:38:12,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:38:12,558 INFO L470 AbstractCegarLoop]: Abstraction has 52763 states and 342375 transitions. [2022-03-15 20:38:12,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:12,559 INFO L276 IsEmpty]: Start isEmpty. Operand 52763 states and 342375 transitions. [2022-03-15 20:38:12,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:38:12,845 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:38:12,845 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:38:12,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-15 20:38:12,845 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:38:12,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:38:12,848 INFO L85 PathProgramCache]: Analyzing trace with hash -1489184402, now seen corresponding path program 1 times [2022-03-15 20:38:12,849 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:38:12,849 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984445784] [2022-03-15 20:38:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:38:12,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:38:12,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:38:12,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:38:12,898 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:38:12,901 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984445784] [2022-03-15 20:38:12,902 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984445784] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:38:12,903 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:38:12,903 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:38:12,903 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1368483742] [2022-03-15 20:38:12,904 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:38:12,905 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:38:13,859 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:38:13,859 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:38:37,288 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 1 new interpolants: [1664812#(not (= set_4Thread1of1ForFork0_thidvar0 0))] [2022-03-15 20:38:37,288 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-15 20:38:37,288 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:38:37,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-15 20:38:37,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:38:37,289 INFO L87 Difference]: Start difference. First operand 52763 states and 342375 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:37,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:38:37,829 INFO L93 Difference]: Finished difference Result 38811 states and 239143 transitions. [2022-03-15 20:38:37,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:38:37,829 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 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 34 [2022-03-15 20:38:37,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:38:38,045 INFO L225 Difference]: With dead ends: 38811 [2022-03-15 20:38:38,045 INFO L226 Difference]: Without dead ends: 38811 [2022-03-15 20:38:38,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6109 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-03-15 20:38:38,046 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 103 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:38:38,047 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 1 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:38:38,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38811 states. [2022-03-15 20:38:39,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38811 to 38811. [2022-03-15 20:38:39,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38811 states, 38810 states have (on average 6.161891265137851) internal successors, (239143), 38810 states have internal predecessors, (239143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:39,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38811 states to 38811 states and 239143 transitions. [2022-03-15 20:38:39,828 INFO L78 Accepts]: Start accepts. Automaton has 38811 states and 239143 transitions. Word has length 34 [2022-03-15 20:38:39,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:38:39,830 INFO L470 AbstractCegarLoop]: Abstraction has 38811 states and 239143 transitions. [2022-03-15 20:38:39,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:39,830 INFO L276 IsEmpty]: Start isEmpty. Operand 38811 states and 239143 transitions. [2022-03-15 20:38:39,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:38:39,956 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:38:39,956 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:38:39,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-15 20:38:39,957 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:38:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:38:39,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1439020034, now seen corresponding path program 1 times [2022-03-15 20:38:39,958 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:38:39,958 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190064415] [2022-03-15 20:38:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:38:39,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:38:39,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:38:40,010 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:38:40,010 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:38:40,011 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190064415] [2022-03-15 20:38:40,011 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190064415] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:38:40,011 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:38:40,011 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:38:40,011 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [493167633] [2022-03-15 20:38:40,011 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:38:40,013 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:38:41,156 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:38:41,157 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:38:58,728 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:38:58,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:38:58,729 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:38:58,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:38:58,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:38:58,729 INFO L87 Difference]: Start difference. First operand 38811 states and 239143 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:38:59,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:38:59,022 INFO L93 Difference]: Finished difference Result 23859 states and 144339 transitions. [2022-03-15 20:38:59,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:38:59,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 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 34 [2022-03-15 20:38:59,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:38:59,136 INFO L225 Difference]: With dead ends: 23859 [2022-03-15 20:38:59,136 INFO L226 Difference]: Without dead ends: 23859 [2022-03-15 20:38:59,136 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:38:59,137 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 76 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:38:59,137 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 1 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:38:59,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23859 states. [2022-03-15 20:38:59,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23859 to 23859. [2022-03-15 20:38:59,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23859 states, 23858 states have (on average 6.049920362142678) internal successors, (144339), 23858 states have internal predecessors, (144339), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:39:00,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23859 states to 23859 states and 144339 transitions. [2022-03-15 20:39:00,047 INFO L78 Accepts]: Start accepts. Automaton has 23859 states and 144339 transitions. Word has length 34 [2022-03-15 20:39:00,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:39:00,048 INFO L470 AbstractCegarLoop]: Abstraction has 23859 states and 144339 transitions. [2022-03-15 20:39:00,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 3 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:39:00,048 INFO L276 IsEmpty]: Start isEmpty. Operand 23859 states and 144339 transitions. [2022-03-15 20:39:00,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:39:00,119 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:39:00,119 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:39:00,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-03-15 20:39:00,119 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:39:00,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:39:00,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1937281094, now seen corresponding path program 1 times [2022-03-15 20:39:00,120 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:39:00,120 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450124822] [2022-03-15 20:39:00,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:39:00,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:39:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:39:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:39:00,140 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:39:00,141 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450124822] [2022-03-15 20:39:00,141 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450124822] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:39:00,141 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:39:00,141 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:39:00,141 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [574246122] [2022-03-15 20:39:00,141 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:39:00,143 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:39:01,230 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:39:01,230 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:39:29,670 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:39:29,670 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:39:29,670 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:39:29,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:39:29,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:39:29,671 INFO L87 Difference]: Start difference. First operand 23859 states and 144339 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:39:29,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:39:29,914 INFO L93 Difference]: Finished difference Result 22835 states and 136147 transitions. [2022-03-15 20:39:29,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:39:29,914 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 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 34 [2022-03-15 20:39:29,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:39:30,019 INFO L225 Difference]: With dead ends: 22835 [2022-03-15 20:39:30,020 INFO L226 Difference]: Without dead ends: 22835 [2022-03-15 20:39:30,020 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:39:30,021 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 75 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:39:30,021 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:39:30,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22835 states. [2022-03-15 20:39:30,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22835 to 22835. [2022-03-15 20:39:30,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22835 states, 22834 states have (on average 5.962468249102216) internal successors, (136147), 22834 states have internal predecessors, (136147), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:39:31,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22835 states to 22835 states and 136147 transitions. [2022-03-15 20:39:31,036 INFO L78 Accepts]: Start accepts. Automaton has 22835 states and 136147 transitions. Word has length 34 [2022-03-15 20:39:31,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:39:31,037 INFO L470 AbstractCegarLoop]: Abstraction has 22835 states and 136147 transitions. [2022-03-15 20:39:31,037 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:39:31,037 INFO L276 IsEmpty]: Start isEmpty. Operand 22835 states and 136147 transitions. [2022-03-15 20:39:31,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:39:31,109 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:39:31,110 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:39:31,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-03-15 20:39:31,110 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:39:31,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:39:31,110 INFO L85 PathProgramCache]: Analyzing trace with hash -431652124, now seen corresponding path program 1 times [2022-03-15 20:39:31,112 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:39:31,112 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137843541] [2022-03-15 20:39:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:39:31,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:39:31,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:39:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:39:31,144 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:39:31,144 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137843541] [2022-03-15 20:39:31,144 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137843541] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:39:31,144 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:39:31,144 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:39:31,144 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [1806375495] [2022-03-15 20:39:31,144 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:39:31,146 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:39:32,132 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:39:32,132 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider [2022-03-15 20:40:00,589 INFO L301 McrAutomatonBuilder]: Construction finished. MCR generated 0 new interpolants: [] [2022-03-15 20:40:00,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-15 20:40:00,589 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-15 20:40:00,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-15 20:40:00,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:40:00,590 INFO L87 Difference]: Start difference. First operand 22835 states and 136147 transitions. Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:40:00,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-15 20:40:00,755 INFO L93 Difference]: Finished difference Result 14291 states and 82627 transitions. [2022-03-15 20:40:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-15 20:40:00,755 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 34 [2022-03-15 20:40:00,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-15 20:40:00,879 INFO L225 Difference]: With dead ends: 14291 [2022-03-15 20:40:00,880 INFO L226 Difference]: Without dead ends: 14291 [2022-03-15 20:40:00,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6111 GetRequests, 6110 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-15 20:40:00,880 INFO L933 BasicCegarLoop]: 1 mSDtfsCounter, 69 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 108 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-15 20:40:00,882 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 1 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 108 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-15 20:40:00,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14291 states. [2022-03-15 20:40:01,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14291 to 14291. [2022-03-15 20:40:01,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14291 states, 14290 states have (on average 5.782155353393982) internal successors, (82627), 14290 states have internal predecessors, (82627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:40:01,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14291 states to 14291 states and 82627 transitions. [2022-03-15 20:40:01,278 INFO L78 Accepts]: Start accepts. Automaton has 14291 states and 82627 transitions. Word has length 34 [2022-03-15 20:40:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-15 20:40:01,280 INFO L470 AbstractCegarLoop]: Abstraction has 14291 states and 82627 transitions. [2022-03-15 20:40:01,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-15 20:40:01,280 INFO L276 IsEmpty]: Start isEmpty. Operand 14291 states and 82627 transitions. [2022-03-15 20:40:01,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-03-15 20:40:01,319 INFO L506 BasicCegarLoop]: Found error trace [2022-03-15 20:40:01,319 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-15 20:40:01,319 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-03-15 20:40:01,319 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONASSERT, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 8 more)] === [2022-03-15 20:40:01,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-15 20:40:01,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1299935998, now seen corresponding path program 1 times [2022-03-15 20:40:01,321 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-15 20:40:01,321 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946910508] [2022-03-15 20:40:01,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-15 20:40:01,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-15 20:40:01,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-15 20:40:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-15 20:40:01,369 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-15 20:40:01,370 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946910508] [2022-03-15 20:40:01,370 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1946910508] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-15 20:40:01,370 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-15 20:40:01,370 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-15 20:40:01,370 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleMcr [964119393] [2022-03-15 20:40:01,370 INFO L194 McrAutomatonBuilder]: Constructing automaton for MCR equivalence class. [2022-03-15 20:40:01,372 INFO L249 McrAutomatonBuilder]: Started intersection. [2022-03-15 20:40:02,143 INFO L252 McrAutomatonBuilder]: Finished intersection with 6143 states and 33793 transitions. [2022-03-15 20:40:02,143 INFO L276 McrAutomatonBuilder]: Constructing interpolant automaton by labelling MCR automaton with interpolants from WpInterpolantProvider