/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-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread/stack-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 02:46:30,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 02:46:30,782 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 02:46:30,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 02:46:30,787 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 02:46:30,816 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 02:46:30,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 02:46:30,821 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 02:46:30,822 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 02:46:30,825 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 02:46:30,825 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 02:46:30,826 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 02:46:30,826 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 02:46:30,827 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 02:46:30,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 02:46:30,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 02:46:30,827 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 02:46:30,828 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 02:46:30,828 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 02:46:30,828 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 02:46:30,828 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 02:46:30,829 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 02:46:30,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 02:46:30,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 02:46:30,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 02:46:30,830 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 02:46:30,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 02:46:30,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:46:30,830 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 02:46:30,830 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 02:46:30,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 02:46:30,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 02:46:30,832 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 02:46:30,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 02:46:30,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 02:46:30,832 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 02:46:31,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 02:46:31,131 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 02:46:31,134 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 02:46:31,135 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 02:46:31,135 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 02:46:31,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack-2.i [2023-08-27 02:46:32,246 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 02:46:32,537 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 02:46:32,538 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack-2.i [2023-08-27 02:46:32,556 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caaf91e4/15435c2d71944a2985f2e4bbc88c826f/FLAG5c799b2d5 [2023-08-27 02:46:32,570 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3caaf91e4/15435c2d71944a2985f2e4bbc88c826f [2023-08-27 02:46:32,572 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 02:46:32,573 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 02:46:32,575 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 02:46:32,575 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 02:46:32,577 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 02:46:32,578 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:46:32" (1/1) ... [2023-08-27 02:46:32,579 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5fb779a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:32, skipping insertion in model container [2023-08-27 02:46:32,579 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 02:46:32" (1/1) ... [2023-08-27 02:46:32,628 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 02:46:33,066 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:46:33,078 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 02:46:33,107 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:46:33,108 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [261] [2023-08-27 02:46:33,114 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [753] [2023-08-27 02:46:33,130 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 02:46:33,189 INFO L206 MainTranslator]: Completed translation [2023-08-27 02:46:33,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33 WrapperNode [2023-08-27 02:46:33,189 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 02:46:33,191 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 02:46:33,191 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 02:46:33,191 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 02:46:33,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,225 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,265 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 174 [2023-08-27 02:46:33,265 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 02:46:33,266 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 02:46:33,267 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 02:46:33,267 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 02:46:33,274 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,274 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,290 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,290 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,296 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,298 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,300 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,301 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,303 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 02:46:33,304 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 02:46:33,304 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 02:46:33,304 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 02:46:33,317 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (1/1) ... [2023-08-27 02:46:33,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 02:46:33,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:46:33,349 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) [2023-08-27 02:46:33,383 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-08-27 02:46:33,384 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-08-27 02:46:33,384 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-08-27 02:46:33,384 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-08-27 02:46:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 02:46:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 02:46:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 02:46:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 02:46:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-27 02:46:33,385 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 02:46:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 02:46:33,386 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 02:46:33,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 02:46:33,387 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 02:46:33,376 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 [2023-08-27 02:46:33,500 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 02:46:33,502 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 02:46:33,765 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 02:46:33,778 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 02:46:33,779 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-27 02:46:33,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:46:33 BoogieIcfgContainer [2023-08-27 02:46:33,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 02:46:33,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 02:46:33,784 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 02:46:33,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 02:46:33,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 02:46:32" (1/3) ... [2023-08-27 02:46:33,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340ef65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:46:33, skipping insertion in model container [2023-08-27 02:46:33,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 02:46:33" (2/3) ... [2023-08-27 02:46:33,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@340ef65f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 02:46:33, skipping insertion in model container [2023-08-27 02:46:33,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 02:46:33" (3/3) ... [2023-08-27 02:46:33,789 INFO L112 eAbstractionObserver]: Analyzing ICFG stack-2.i [2023-08-27 02:46:33,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 02:46:33,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 10 error locations. [2023-08-27 02:46:33,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 02:46:33,926 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-27 02:46:33,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 186 transitions, 388 flow [2023-08-27 02:46:34,061 INFO L124 PetriNetUnfolderBase]: 12/184 cut-off events. [2023-08-27 02:46:34,062 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-27 02:46:34,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193 conditions, 184 events. 12/184 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 510 event pairs, 0 based on Foata normal form. 0/162 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 02:46:34,067 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 186 transitions, 388 flow [2023-08-27 02:46:34,075 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 175 transitions, 359 flow [2023-08-27 02:46:34,078 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 02:46:34,089 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 175 transitions, 359 flow [2023-08-27 02:46:34,091 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 175 transitions, 359 flow [2023-08-27 02:46:34,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 175 transitions, 359 flow [2023-08-27 02:46:34,152 INFO L124 PetriNetUnfolderBase]: 12/175 cut-off events. [2023-08-27 02:46:34,152 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:46:34,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183 conditions, 175 events. 12/175 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 432 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 142. Up to 3 conditions per place. [2023-08-27 02:46:34,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 10550 [2023-08-27 02:46:38,279 INFO L134 LiptonReduction]: Checked pairs total: 14512 [2023-08-27 02:46:38,279 INFO L136 LiptonReduction]: Total number of compositions: 177 [2023-08-27 02:46:38,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 02:46:38,295 INFO L357 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=false, mAutomataTypeConcurrency=PETRI_NET, 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6dd70b23, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 02:46:38,295 INFO L358 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2023-08-27 02:46:38,299 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 02:46:38,299 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-27 02:46:38,300 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-27 02:46:38,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:38,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 02:46:38,301 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:38,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:38,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1194637673, now seen corresponding path program 1 times [2023-08-27 02:46:38,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:38,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803376438] [2023-08-27 02:46:38,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:38,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:38,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:38,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:38,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803376438] [2023-08-27 02:46:38,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803376438] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:38,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:38,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:38,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725244967] [2023-08-27 02:46:38,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:38,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:38,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:38,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:38,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:38,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 363 [2023-08-27 02:46:38,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 42 transitions, 93 flow. Second operand has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2023-08-27 02:46:38,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:38,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 363 [2023-08-27 02:46:38,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:38,878 INFO L124 PetriNetUnfolderBase]: 1600/2589 cut-off events. [2023-08-27 02:46:38,879 INFO L125 PetriNetUnfolderBase]: For 88/88 co-relation queries the response was YES. [2023-08-27 02:46:38,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5229 conditions, 2589 events. 1600/2589 cut-off events. For 88/88 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 12438 event pairs, 464 based on Foata normal form. 0/1716 useless extension candidates. Maximal degree in co-relation 4920. Up to 1581 conditions per place. [2023-08-27 02:46:38,894 INFO L140 encePairwiseOnDemand]: 354/363 looper letters, 69 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-27 02:46:38,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 74 transitions, 309 flow [2023-08-27 02:46:38,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:38,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:38,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 567 transitions. [2023-08-27 02:46:38,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5206611570247934 [2023-08-27 02:46:38,909 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 567 transitions. [2023-08-27 02:46:38,909 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 567 transitions. [2023-08-27 02:46:38,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:38,913 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 567 transitions. [2023-08-27 02:46:38,916 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 189.0) internal successors, (567), 3 states have internal predecessors, (567), 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) [2023-08-27 02:46:38,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:38,921 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:38,923 INFO L175 Difference]: Start difference. First operand has 44 places, 42 transitions, 93 flow. Second operand 3 states and 567 transitions. [2023-08-27 02:46:38,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 74 transitions, 309 flow [2023-08-27 02:46:38,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 301 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 02:46:38,929 INFO L231 Difference]: Finished difference. Result has 45 places, 45 transitions, 126 flow [2023-08-27 02:46:38,930 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=45, PETRI_TRANSITIONS=45} [2023-08-27 02:46:38,933 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2023-08-27 02:46:38,933 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 45 transitions, 126 flow [2023-08-27 02:46:38,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 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) [2023-08-27 02:46:38,934 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:38,934 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:38,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 02:46:38,934 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:38,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:38,935 INFO L85 PathProgramCache]: Analyzing trace with hash -484624026, now seen corresponding path program 1 times [2023-08-27 02:46:38,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:38,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082814124] [2023-08-27 02:46:38,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:38,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:38,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:39,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:39,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082814124] [2023-08-27 02:46:39,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082814124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:39,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:39,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:39,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554999692] [2023-08-27 02:46:39,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:39,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:39,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:39,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:39,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:39,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 363 [2023-08-27 02:46:39,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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) [2023-08-27 02:46:39,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:39,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 363 [2023-08-27 02:46:39,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:39,377 INFO L124 PetriNetUnfolderBase]: 1716/2801 cut-off events. [2023-08-27 02:46:39,377 INFO L125 PetriNetUnfolderBase]: For 227/227 co-relation queries the response was YES. [2023-08-27 02:46:39,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6080 conditions, 2801 events. 1716/2801 cut-off events. For 227/227 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 13846 event pairs, 747 based on Foata normal form. 0/2034 useless extension candidates. Maximal degree in co-relation 5741. Up to 2357 conditions per place. [2023-08-27 02:46:39,392 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 63 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-27 02:46:39,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 66 transitions, 305 flow [2023-08-27 02:46:39,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:39,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:39,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 570 transitions. [2023-08-27 02:46:39,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234159779614325 [2023-08-27 02:46:39,397 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 570 transitions. [2023-08-27 02:46:39,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 570 transitions. [2023-08-27 02:46:39,398 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:39,398 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 570 transitions. [2023-08-27 02:46:39,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.0) internal successors, (570), 3 states have internal predecessors, (570), 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) [2023-08-27 02:46:39,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:39,402 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:39,402 INFO L175 Difference]: Start difference. First operand has 45 places, 45 transitions, 126 flow. Second operand 3 states and 570 transitions. [2023-08-27 02:46:39,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 66 transitions, 305 flow [2023-08-27 02:46:39,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 66 transitions, 295 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:46:39,410 INFO L231 Difference]: Finished difference. Result has 46 places, 46 transitions, 130 flow [2023-08-27 02:46:39,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=46, PETRI_TRANSITIONS=46} [2023-08-27 02:46:39,411 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-27 02:46:39,411 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 46 transitions, 130 flow [2023-08-27 02:46:39,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.0) internal successors, (516), 3 states have internal predecessors, (516), 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) [2023-08-27 02:46:39,412 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:39,412 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:39,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 02:46:39,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:39,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:39,418 INFO L85 PathProgramCache]: Analyzing trace with hash -484659858, now seen corresponding path program 1 times [2023-08-27 02:46:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:39,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676103979] [2023-08-27 02:46:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:39,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:39,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:39,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676103979] [2023-08-27 02:46:39,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676103979] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:39,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:39,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:39,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868345340] [2023-08-27 02:46:39,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:39,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:39,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:39,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:39,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:39,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:39,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 46 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2023-08-27 02:46:39,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:39,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:39,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:39,878 INFO L124 PetriNetUnfolderBase]: 2514/4177 cut-off events. [2023-08-27 02:46:39,878 INFO L125 PetriNetUnfolderBase]: For 301/301 co-relation queries the response was YES. [2023-08-27 02:46:39,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9140 conditions, 4177 events. 2514/4177 cut-off events. For 301/301 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 23103 event pairs, 1358 based on Foata normal form. 0/3347 useless extension candidates. Maximal degree in co-relation 8764. Up to 2778 conditions per place. [2023-08-27 02:46:39,899 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 78 selfloop transitions, 2 changer transitions 0/81 dead transitions. [2023-08-27 02:46:39,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 81 transitions, 386 flow [2023-08-27 02:46:39,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:39,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:39,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 578 transitions. [2023-08-27 02:46:39,901 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5307621671258035 [2023-08-27 02:46:39,901 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 578 transitions. [2023-08-27 02:46:39,902 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 578 transitions. [2023-08-27 02:46:39,902 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:39,902 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 578 transitions. [2023-08-27 02:46:39,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 192.66666666666666) internal successors, (578), 3 states have internal predecessors, (578), 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) [2023-08-27 02:46:39,905 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:39,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:39,906 INFO L175 Difference]: Start difference. First operand has 46 places, 46 transitions, 130 flow. Second operand 3 states and 578 transitions. [2023-08-27 02:46:39,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 81 transitions, 386 flow [2023-08-27 02:46:39,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 81 transitions, 383 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:39,908 INFO L231 Difference]: Finished difference. Result has 48 places, 47 transitions, 144 flow [2023-08-27 02:46:39,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=48, PETRI_TRANSITIONS=47} [2023-08-27 02:46:39,909 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 4 predicate places. [2023-08-27 02:46:39,909 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 47 transitions, 144 flow [2023-08-27 02:46:39,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 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) [2023-08-27 02:46:39,910 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:39,910 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:39,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 02:46:39,910 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:39,911 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:39,911 INFO L85 PathProgramCache]: Analyzing trace with hash 2143603364, now seen corresponding path program 1 times [2023-08-27 02:46:39,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:39,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091060348] [2023-08-27 02:46:39,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:39,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:39,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:39,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:39,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:39,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091060348] [2023-08-27 02:46:39,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091060348] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:39,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:39,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112929331] [2023-08-27 02:46:39,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:39,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:39,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:39,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:39,959 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 47 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-27 02:46:39,959 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:39,959 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:39,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:40,314 INFO L124 PetriNetUnfolderBase]: 2712/4425 cut-off events. [2023-08-27 02:46:40,314 INFO L125 PetriNetUnfolderBase]: For 607/607 co-relation queries the response was YES. [2023-08-27 02:46:40,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10489 conditions, 4425 events. 2712/4425 cut-off events. For 607/607 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 24176 event pairs, 2085 based on Foata normal form. 114/3749 useless extension candidates. Maximal degree in co-relation 10098. Up to 4073 conditions per place. [2023-08-27 02:46:40,339 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 02:46:40,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 368 flow [2023-08-27 02:46:40,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:40,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:40,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 565 transitions. [2023-08-27 02:46:40,341 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5188246097337006 [2023-08-27 02:46:40,341 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 565 transitions. [2023-08-27 02:46:40,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 565 transitions. [2023-08-27 02:46:40,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:40,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 565 transitions. [2023-08-27 02:46:40,343 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.33333333333334) internal successors, (565), 3 states have internal predecessors, (565), 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) [2023-08-27 02:46:40,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:40,346 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:40,346 INFO L175 Difference]: Start difference. First operand has 48 places, 47 transitions, 144 flow. Second operand 3 states and 565 transitions. [2023-08-27 02:46:40,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 368 flow [2023-08-27 02:46:40,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 364 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:40,349 INFO L231 Difference]: Finished difference. Result has 50 places, 48 transitions, 162 flow [2023-08-27 02:46:40,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=50, PETRI_TRANSITIONS=48} [2023-08-27 02:46:40,349 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-27 02:46:40,350 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 48 transitions, 162 flow [2023-08-27 02:46:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-27 02:46:40,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:40,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:40,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 02:46:40,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:40,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:40,351 INFO L85 PathProgramCache]: Analyzing trace with hash 2027196577, now seen corresponding path program 1 times [2023-08-27 02:46:40,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:40,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104184084] [2023-08-27 02:46:40,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:40,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:40,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:40,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:40,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104184084] [2023-08-27 02:46:40,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104184084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:40,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:40,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:40,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535666832] [2023-08-27 02:46:40,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:40,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:40,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:40,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:40,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:40,394 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:40,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 48 transitions, 162 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-08-27 02:46:40,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:40,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:40,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:40,739 INFO L124 PetriNetUnfolderBase]: 2802/4545 cut-off events. [2023-08-27 02:46:40,739 INFO L125 PetriNetUnfolderBase]: For 1137/1137 co-relation queries the response was YES. [2023-08-27 02:46:40,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 4545 events. 2802/4545 cut-off events. For 1137/1137 co-relation queries the response was YES. Maximal size of possible extension queue 210. Compared 26411 event pairs, 1301 based on Foata normal form. 0/3753 useless extension candidates. Maximal degree in co-relation 8704. Up to 3967 conditions per place. [2023-08-27 02:46:40,763 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 76 selfloop transitions, 2 changer transitions 0/79 dead transitions. [2023-08-27 02:46:40,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 79 transitions, 413 flow [2023-08-27 02:46:40,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:40,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:40,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 574 transitions. [2023-08-27 02:46:40,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.527089072543618 [2023-08-27 02:46:40,765 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 574 transitions. [2023-08-27 02:46:40,765 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 574 transitions. [2023-08-27 02:46:40,766 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:40,766 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 574 transitions. [2023-08-27 02:46:40,767 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 191.33333333333334) internal successors, (574), 3 states have internal predecessors, (574), 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) [2023-08-27 02:46:40,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:40,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:40,770 INFO L175 Difference]: Start difference. First operand has 50 places, 48 transitions, 162 flow. Second operand 3 states and 574 transitions. [2023-08-27 02:46:40,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 79 transitions, 413 flow [2023-08-27 02:46:40,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 79 transitions, 408 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:40,775 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 174 flow [2023-08-27 02:46:40,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2023-08-27 02:46:40,776 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 8 predicate places. [2023-08-27 02:46:40,776 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 174 flow [2023-08-27 02:46:40,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-08-27 02:46:40,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:40,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:40,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 02:46:40,777 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:40,778 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:40,778 INFO L85 PathProgramCache]: Analyzing trace with hash -2070746543, now seen corresponding path program 1 times [2023-08-27 02:46:40,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:40,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400141706] [2023-08-27 02:46:40,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:40,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:40,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:40,812 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:46:40,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:40,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400141706] [2023-08-27 02:46:40,812 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400141706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:40,812 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:40,812 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:40,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796632916] [2023-08-27 02:46:40,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:40,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:40,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:40,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:40,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:40,814 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:40,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-08-27 02:46:40,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:40,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:40,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:41,145 INFO L124 PetriNetUnfolderBase]: 2519/4206 cut-off events. [2023-08-27 02:46:41,145 INFO L125 PetriNetUnfolderBase]: For 1383/1383 co-relation queries the response was YES. [2023-08-27 02:46:41,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 4206 events. 2519/4206 cut-off events. For 1383/1383 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 23691 event pairs, 343 based on Foata normal form. 0/3694 useless extension candidates. Maximal degree in co-relation 9998. Up to 3400 conditions per place. [2023-08-27 02:46:41,159 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 67 selfloop transitions, 4 changer transitions 0/72 dead transitions. [2023-08-27 02:46:41,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 72 transitions, 403 flow [2023-08-27 02:46:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:41,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:41,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-27 02:46:41,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5160697887970616 [2023-08-27 02:46:41,161 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-27 02:46:41,161 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-27 02:46:41,162 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:41,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-27 02:46:41,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 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) [2023-08-27 02:46:41,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:41,166 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:41,166 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 174 flow. Second operand 3 states and 562 transitions. [2023-08-27 02:46:41,166 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 72 transitions, 403 flow [2023-08-27 02:46:41,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 72 transitions, 399 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:41,168 INFO L231 Difference]: Finished difference. Result has 53 places, 49 transitions, 184 flow [2023-08-27 02:46:41,168 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=184, PETRI_PLACES=53, PETRI_TRANSITIONS=49} [2023-08-27 02:46:41,169 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 9 predicate places. [2023-08-27 02:46:41,169 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 49 transitions, 184 flow [2023-08-27 02:46:41,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 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) [2023-08-27 02:46:41,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:41,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:41,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 02:46:41,170 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:41,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:41,171 INFO L85 PathProgramCache]: Analyzing trace with hash -2070746578, now seen corresponding path program 1 times [2023-08-27 02:46:41,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:41,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478937459] [2023-08-27 02:46:41,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:41,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:41,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:41,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:41,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:41,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478937459] [2023-08-27 02:46:41,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478937459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:46:41,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [341060258] [2023-08-27 02:46:41,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:41,216 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:46:41,216 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:46:41,225 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) [2023-08-27 02:46:41,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 02:46:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:41,325 INFO L262 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:46:41,329 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:46:41,367 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:41,367 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:46:41,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [341060258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:41,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:46:41,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 02:46:41,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137312150] [2023-08-27 02:46:41,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:41,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 02:46:41,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:41,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 02:46:41,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 02:46:41,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:41,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 49 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 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) [2023-08-27 02:46:41,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:41,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:41,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:41,703 INFO L124 PetriNetUnfolderBase]: 2397/4000 cut-off events. [2023-08-27 02:46:41,703 INFO L125 PetriNetUnfolderBase]: For 2139/2139 co-relation queries the response was YES. [2023-08-27 02:46:41,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10367 conditions, 4000 events. 2397/4000 cut-off events. For 2139/2139 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22271 event pairs, 85 based on Foata normal form. 84/3666 useless extension candidates. Maximal degree in co-relation 9946. Up to 2264 conditions per place. [2023-08-27 02:46:41,723 INFO L140 encePairwiseOnDemand]: 360/363 looper letters, 103 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-27 02:46:41,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 106 transitions, 598 flow [2023-08-27 02:46:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 02:46:41,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 02:46:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 760 transitions. [2023-08-27 02:46:41,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234159779614325 [2023-08-27 02:46:41,726 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 760 transitions. [2023-08-27 02:46:41,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 760 transitions. [2023-08-27 02:46:41,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:41,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 760 transitions. [2023-08-27 02:46:41,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 190.0) internal successors, (760), 4 states have internal predecessors, (760), 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) [2023-08-27 02:46:41,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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) [2023-08-27 02:46:41,731 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 363.0) internal successors, (1815), 5 states have internal predecessors, (1815), 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) [2023-08-27 02:46:41,731 INFO L175 Difference]: Start difference. First operand has 53 places, 49 transitions, 184 flow. Second operand 4 states and 760 transitions. [2023-08-27 02:46:41,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 106 transitions, 598 flow [2023-08-27 02:46:41,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 106 transitions, 594 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:41,736 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 180 flow [2023-08-27 02:46:41,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=180, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-08-27 02:46:41,738 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 10 predicate places. [2023-08-27 02:46:41,738 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 180 flow [2023-08-27 02:46:41,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.75) internal successors, (679), 4 states have internal predecessors, (679), 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) [2023-08-27 02:46:41,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:41,739 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:41,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 02:46:41,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:46:41,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:41,944 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:41,944 INFO L85 PathProgramCache]: Analyzing trace with hash 678744456, now seen corresponding path program 1 times [2023-08-27 02:46:41,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:41,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596515708] [2023-08-27 02:46:41,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:41,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:42,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:42,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596515708] [2023-08-27 02:46:42,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596515708] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:46:42,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482376208] [2023-08-27 02:46:42,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:42,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:46:42,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:46:42,023 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) [2023-08-27 02:46:42,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 02:46:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:42,124 INFO L262 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 02:46:42,125 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:46:42,153 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:42,154 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 02:46:42,189 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:42,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482376208] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 02:46:42,190 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 02:46:42,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-08-27 02:46:42,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405263357] [2023-08-27 02:46:42,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 02:46:42,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-27 02:46:42,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:42,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-27 02:46:42,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-08-27 02:46:42,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 363 [2023-08-27 02:46:42,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 180 flow. Second operand has 10 states, 10 states have (on average 160.6) internal successors, (1606), 10 states have internal predecessors, (1606), 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) [2023-08-27 02:46:42,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:42,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 363 [2023-08-27 02:46:42,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:43,134 INFO L124 PetriNetUnfolderBase]: 4759/7812 cut-off events. [2023-08-27 02:46:43,134 INFO L125 PetriNetUnfolderBase]: For 4014/4014 co-relation queries the response was YES. [2023-08-27 02:46:43,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20596 conditions, 7812 events. 4759/7812 cut-off events. For 4014/4014 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 45107 event pairs, 788 based on Foata normal form. 112/7186 useless extension candidates. Maximal degree in co-relation 19960. Up to 2453 conditions per place. [2023-08-27 02:46:43,172 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 264 selfloop transitions, 42 changer transitions 0/307 dead transitions. [2023-08-27 02:46:43,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 307 transitions, 1716 flow [2023-08-27 02:46:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-27 02:46:43,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-27 02:46:43,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2802 transitions. [2023-08-27 02:46:43,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4824380165289256 [2023-08-27 02:46:43,180 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2802 transitions. [2023-08-27 02:46:43,180 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2802 transitions. [2023-08-27 02:46:43,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:43,182 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2802 transitions. [2023-08-27 02:46:43,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 175.125) internal successors, (2802), 16 states have internal predecessors, (2802), 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) [2023-08-27 02:46:43,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 363.0) internal successors, (6171), 17 states have internal predecessors, (6171), 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) [2023-08-27 02:46:43,196 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 363.0) internal successors, (6171), 17 states have internal predecessors, (6171), 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) [2023-08-27 02:46:43,196 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 180 flow. Second operand 16 states and 2802 transitions. [2023-08-27 02:46:43,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 307 transitions, 1716 flow [2023-08-27 02:46:43,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 307 transitions, 1691 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 02:46:43,209 INFO L231 Difference]: Finished difference. Result has 72 places, 86 transitions, 499 flow [2023-08-27 02:46:43,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=499, PETRI_PLACES=72, PETRI_TRANSITIONS=86} [2023-08-27 02:46:43,211 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 28 predicate places. [2023-08-27 02:46:43,211 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 86 transitions, 499 flow [2023-08-27 02:46:43,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 160.6) internal successors, (1606), 10 states have internal predecessors, (1606), 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) [2023-08-27 02:46:43,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:43,213 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:43,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 02:46:43,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 02:46:43,418 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:43,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:43,419 INFO L85 PathProgramCache]: Analyzing trace with hash -562762515, now seen corresponding path program 1 times [2023-08-27 02:46:43,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:43,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358475280] [2023-08-27 02:46:43,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:43,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:43,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:43,527 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:43,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:43,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358475280] [2023-08-27 02:46:43,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358475280] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 02:46:43,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [836679273] [2023-08-27 02:46:43,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:43,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:46:43,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 02:46:43,530 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 02:46:43,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 02:46:43,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:43,628 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 02:46:43,629 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 02:46:43,657 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:43,657 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 02:46:43,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [836679273] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:43,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 02:46:43,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-27 02:46:43,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329396218] [2023-08-27 02:46:43,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:43,658 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 02:46:43,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 02:46:43,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-08-27 02:46:43,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 363 [2023-08-27 02:46:43,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 86 transitions, 499 flow. Second operand has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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) [2023-08-27 02:46:43,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:43,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 363 [2023-08-27 02:46:43,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:44,458 INFO L124 PetriNetUnfolderBase]: 5024/8411 cut-off events. [2023-08-27 02:46:44,458 INFO L125 PetriNetUnfolderBase]: For 10049/10049 co-relation queries the response was YES. [2023-08-27 02:46:44,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24372 conditions, 8411 events. 5024/8411 cut-off events. For 10049/10049 co-relation queries the response was YES. Maximal size of possible extension queue 235. Compared 48998 event pairs, 1147 based on Foata normal form. 458/8211 useless extension candidates. Maximal degree in co-relation 23722. Up to 4521 conditions per place. [2023-08-27 02:46:44,496 INFO L140 encePairwiseOnDemand]: 353/363 looper letters, 162 selfloop transitions, 43 changer transitions 0/206 dead transitions. [2023-08-27 02:46:44,497 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 206 transitions, 1422 flow [2023-08-27 02:46:44,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 02:46:44,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 02:46:44,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1253 transitions. [2023-08-27 02:46:44,500 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931129476584022 [2023-08-27 02:46:44,500 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1253 transitions. [2023-08-27 02:46:44,500 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1253 transitions. [2023-08-27 02:46:44,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:44,501 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1253 transitions. [2023-08-27 02:46:44,503 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 179.0) internal successors, (1253), 7 states have internal predecessors, (1253), 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) [2023-08-27 02:46:44,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 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) [2023-08-27 02:46:44,507 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 363.0) internal successors, (2904), 8 states have internal predecessors, (2904), 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) [2023-08-27 02:46:44,507 INFO L175 Difference]: Start difference. First operand has 72 places, 86 transitions, 499 flow. Second operand 7 states and 1253 transitions. [2023-08-27 02:46:44,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 206 transitions, 1422 flow [2023-08-27 02:46:44,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 206 transitions, 1386 flow, removed 18 selfloop flow, removed 0 redundant places. [2023-08-27 02:46:44,543 INFO L231 Difference]: Finished difference. Result has 82 places, 101 transitions, 786 flow [2023-08-27 02:46:44,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=427, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=786, PETRI_PLACES=82, PETRI_TRANSITIONS=101} [2023-08-27 02:46:44,543 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2023-08-27 02:46:44,543 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 101 transitions, 786 flow [2023-08-27 02:46:44,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.2) internal successors, (801), 5 states have internal predecessors, (801), 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) [2023-08-27 02:46:44,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:44,544 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:46:44,555 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 02:46:44,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 02:46:44,756 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:44,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:44,756 INFO L85 PathProgramCache]: Analyzing trace with hash -2000047134, now seen corresponding path program 1 times [2023-08-27 02:46:44,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:44,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098198951] [2023-08-27 02:46:44,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:44,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:44,820 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 02:46:44,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098198951] [2023-08-27 02:46:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098198951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500555219] [2023-08-27 02:46:44,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:44,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:44,823 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:44,823 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 101 transitions, 786 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2023-08-27 02:46:44,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:44,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:44,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:45,404 INFO L124 PetriNetUnfolderBase]: 4719/7888 cut-off events. [2023-08-27 02:46:45,404 INFO L125 PetriNetUnfolderBase]: For 15077/15077 co-relation queries the response was YES. [2023-08-27 02:46:45,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24988 conditions, 7888 events. 4719/7888 cut-off events. For 15077/15077 co-relation queries the response was YES. Maximal size of possible extension queue 217. Compared 45771 event pairs, 1579 based on Foata normal form. 0/7448 useless extension candidates. Maximal degree in co-relation 20820. Up to 6236 conditions per place. [2023-08-27 02:46:45,442 INFO L140 encePairwiseOnDemand]: 359/363 looper letters, 123 selfloop transitions, 4 changer transitions 0/128 dead transitions. [2023-08-27 02:46:45,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 128 transitions, 1210 flow [2023-08-27 02:46:45,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:45,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:45,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-27 02:46:45,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142332415059688 [2023-08-27 02:46:45,445 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-27 02:46:45,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-27 02:46:45,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:45,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-27 02:46:45,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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) [2023-08-27 02:46:45,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:45,448 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:45,449 INFO L175 Difference]: Start difference. First operand has 82 places, 101 transitions, 786 flow. Second operand 3 states and 560 transitions. [2023-08-27 02:46:45,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 128 transitions, 1210 flow [2023-08-27 02:46:45,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 128 transitions, 1210 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 02:46:45,502 INFO L231 Difference]: Finished difference. Result has 84 places, 101 transitions, 798 flow [2023-08-27 02:46:45,502 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=782, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=798, PETRI_PLACES=84, PETRI_TRANSITIONS=101} [2023-08-27 02:46:45,503 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2023-08-27 02:46:45,503 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 101 transitions, 798 flow [2023-08-27 02:46:45,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2023-08-27 02:46:45,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:45,504 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-08-27 02:46:45,504 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 02:46:45,504 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:45,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:45,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2000047135, now seen corresponding path program 1 times [2023-08-27 02:46:45,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:45,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137611218] [2023-08-27 02:46:45,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:45,505 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:45,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137611218] [2023-08-27 02:46:45,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137611218] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:45,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:45,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 02:46:45,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874519111] [2023-08-27 02:46:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:45,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:45,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:45,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 363 [2023-08-27 02:46:45,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 101 transitions, 798 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2023-08-27 02:46:45,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:45,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 363 [2023-08-27 02:46:45,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:46,086 INFO L124 PetriNetUnfolderBase]: 4426/7391 cut-off events. [2023-08-27 02:46:46,087 INFO L125 PetriNetUnfolderBase]: For 16157/16157 co-relation queries the response was YES. [2023-08-27 02:46:46,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24239 conditions, 7391 events. 4426/7391 cut-off events. For 16157/16157 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 42513 event pairs, 1711 based on Foata normal form. 202/7371 useless extension candidates. Maximal degree in co-relation 23696. Up to 7283 conditions per place. [2023-08-27 02:46:46,117 INFO L140 encePairwiseOnDemand]: 361/363 looper letters, 108 selfloop transitions, 1 changer transitions 0/110 dead transitions. [2023-08-27 02:46:46,118 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 110 transitions, 1053 flow [2023-08-27 02:46:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:46,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:46,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-27 02:46:46,120 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5022956841138659 [2023-08-27 02:46:46,120 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-27 02:46:46,120 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-27 02:46:46,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:46,120 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-27 02:46:46,122 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 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) [2023-08-27 02:46:46,124 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:46,124 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:46,124 INFO L175 Difference]: Start difference. First operand has 84 places, 101 transitions, 798 flow. Second operand 3 states and 547 transitions. [2023-08-27 02:46:46,124 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 110 transitions, 1053 flow [2023-08-27 02:46:46,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 110 transitions, 1049 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:46,176 INFO L231 Difference]: Finished difference. Result has 84 places, 100 transitions, 792 flow [2023-08-27 02:46:46,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=790, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=792, PETRI_PLACES=84, PETRI_TRANSITIONS=100} [2023-08-27 02:46:46,177 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 40 predicate places. [2023-08-27 02:46:46,177 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 100 transitions, 792 flow [2023-08-27 02:46:46,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2023-08-27 02:46:46,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:46,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:46,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 02:46:46,178 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:46,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:46,178 INFO L85 PathProgramCache]: Analyzing trace with hash 34764367, now seen corresponding path program 1 times [2023-08-27 02:46:46,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:46,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146331286] [2023-08-27 02:46:46,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:46,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:46,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:46,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:46,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:46,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146331286] [2023-08-27 02:46:46,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146331286] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:46,254 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:46,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 02:46:46,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157522859] [2023-08-27 02:46:46,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:46,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 02:46:46,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:46,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 02:46:46,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 02:46:46,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 363 [2023-08-27 02:46:46,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 100 transitions, 792 flow. Second operand has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2023-08-27 02:46:46,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:46,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 363 [2023-08-27 02:46:46,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:46,512 INFO L124 PetriNetUnfolderBase]: 1276/2313 cut-off events. [2023-08-27 02:46:46,512 INFO L125 PetriNetUnfolderBase]: For 3653/3653 co-relation queries the response was YES. [2023-08-27 02:46:46,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7438 conditions, 2313 events. 1276/2313 cut-off events. For 3653/3653 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 11716 event pairs, 203 based on Foata normal form. 260/2555 useless extension candidates. Maximal degree in co-relation 7296. Up to 1865 conditions per place. [2023-08-27 02:46:46,520 INFO L140 encePairwiseOnDemand]: 358/363 looper letters, 63 selfloop transitions, 8 changer transitions 0/71 dead transitions. [2023-08-27 02:46:46,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 601 flow [2023-08-27 02:46:46,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 02:46:46,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 02:46:46,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 536 transitions. [2023-08-27 02:46:46,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4921946740128558 [2023-08-27 02:46:46,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 536 transitions. [2023-08-27 02:46:46,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 536 transitions. [2023-08-27 02:46:46,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:46,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 536 transitions. [2023-08-27 02:46:46,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 178.66666666666666) internal successors, (536), 3 states have internal predecessors, (536), 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) [2023-08-27 02:46:46,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:46,524 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 363.0) internal successors, (1452), 4 states have internal predecessors, (1452), 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) [2023-08-27 02:46:46,524 INFO L175 Difference]: Start difference. First operand has 84 places, 100 transitions, 792 flow. Second operand 3 states and 536 transitions. [2023-08-27 02:46:46,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 601 flow [2023-08-27 02:46:46,541 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 71 transitions, 549 flow, removed 16 selfloop flow, removed 8 redundant places. [2023-08-27 02:46:46,543 INFO L231 Difference]: Finished difference. Result has 70 places, 60 transitions, 376 flow [2023-08-27 02:46:46,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=376, PETRI_PLACES=70, PETRI_TRANSITIONS=60} [2023-08-27 02:46:46,544 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 26 predicate places. [2023-08-27 02:46:46,544 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 60 transitions, 376 flow [2023-08-27 02:46:46,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.0) internal successors, (507), 3 states have internal predecessors, (507), 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) [2023-08-27 02:46:46,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:46,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:46,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 02:46:46,545 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:46,545 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1755833712, now seen corresponding path program 1 times [2023-08-27 02:46:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:46,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333851827] [2023-08-27 02:46:46,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:47,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:47,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:47,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333851827] [2023-08-27 02:46:47,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333851827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:47,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:47,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-08-27 02:46:47,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282962994] [2023-08-27 02:46:47,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:47,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 02:46:47,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:47,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 02:46:47,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2023-08-27 02:46:47,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 363 [2023-08-27 02:46:47,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 60 transitions, 376 flow. Second operand has 15 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 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) [2023-08-27 02:46:47,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:47,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 363 [2023-08-27 02:46:47,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:49,047 INFO L124 PetriNetUnfolderBase]: 1829/3347 cut-off events. [2023-08-27 02:46:49,047 INFO L125 PetriNetUnfolderBase]: For 3927/3927 co-relation queries the response was YES. [2023-08-27 02:46:49,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10441 conditions, 3347 events. 1829/3347 cut-off events. For 3927/3927 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 18379 event pairs, 420 based on Foata normal form. 74/3421 useless extension candidates. Maximal degree in co-relation 10241. Up to 1986 conditions per place. [2023-08-27 02:46:49,062 INFO L140 encePairwiseOnDemand]: 341/363 looper letters, 199 selfloop transitions, 39 changer transitions 0/239 dead transitions. [2023-08-27 02:46:49,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 239 transitions, 1606 flow [2023-08-27 02:46:49,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 02:46:49,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 02:46:49,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2806 transitions. [2023-08-27 02:46:49,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33608815426997246 [2023-08-27 02:46:49,072 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2806 transitions. [2023-08-27 02:46:49,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2806 transitions. [2023-08-27 02:46:49,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:49,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2806 transitions. [2023-08-27 02:46:49,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 122.0) internal successors, (2806), 23 states have internal predecessors, (2806), 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) [2023-08-27 02:46:49,089 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 363.0) internal successors, (8712), 24 states have internal predecessors, (8712), 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) [2023-08-27 02:46:49,090 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 363.0) internal successors, (8712), 24 states have internal predecessors, (8712), 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) [2023-08-27 02:46:49,090 INFO L175 Difference]: Start difference. First operand has 70 places, 60 transitions, 376 flow. Second operand 23 states and 2806 transitions. [2023-08-27 02:46:49,090 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 239 transitions, 1606 flow [2023-08-27 02:46:49,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 239 transitions, 1581 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 02:46:49,101 INFO L231 Difference]: Finished difference. Result has 109 places, 97 transitions, 741 flow [2023-08-27 02:46:49,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=368, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=741, PETRI_PLACES=109, PETRI_TRANSITIONS=97} [2023-08-27 02:46:49,102 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 65 predicate places. [2023-08-27 02:46:49,102 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 97 transitions, 741 flow [2023-08-27 02:46:49,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 114.46666666666667) internal successors, (1717), 15 states have internal predecessors, (1717), 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) [2023-08-27 02:46:49,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:49,103 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:49,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 02:46:49,103 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:49,104 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:49,104 INFO L85 PathProgramCache]: Analyzing trace with hash -1690453436, now seen corresponding path program 2 times [2023-08-27 02:46:49,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:49,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810363035] [2023-08-27 02:46:49,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:49,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:49,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:49,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:49,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810363035] [2023-08-27 02:46:49,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810363035] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:49,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:49,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-27 02:46:49,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318139426] [2023-08-27 02:46:49,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:49,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:46:49,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:49,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:46:49,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2023-08-27 02:46:49,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 363 [2023-08-27 02:46:49,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 97 transitions, 741 flow. Second operand has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 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) [2023-08-27 02:46:49,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:49,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 363 [2023-08-27 02:46:49,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:51,226 INFO L124 PetriNetUnfolderBase]: 2521/4605 cut-off events. [2023-08-27 02:46:51,227 INFO L125 PetriNetUnfolderBase]: For 7909/7909 co-relation queries the response was YES. [2023-08-27 02:46:51,238 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16441 conditions, 4605 events. 2521/4605 cut-off events. For 7909/7909 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 25598 event pairs, 806 based on Foata normal form. 20/4589 useless extension candidates. Maximal degree in co-relation 16223. Up to 2815 conditions per place. [2023-08-27 02:46:51,248 INFO L140 encePairwiseOnDemand]: 343/363 looper letters, 195 selfloop transitions, 38 changer transitions 0/234 dead transitions. [2023-08-27 02:46:51,248 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 234 transitions, 1944 flow [2023-08-27 02:46:51,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:46:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:46:51,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1792 transitions. [2023-08-27 02:46:51,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32910927456382 [2023-08-27 02:46:51,254 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1792 transitions. [2023-08-27 02:46:51,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1792 transitions. [2023-08-27 02:46:51,255 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:51,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1792 transitions. [2023-08-27 02:46:51,258 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.46666666666667) internal successors, (1792), 15 states have internal predecessors, (1792), 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) [2023-08-27 02:46:51,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 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) [2023-08-27 02:46:51,264 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 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) [2023-08-27 02:46:51,265 INFO L175 Difference]: Start difference. First operand has 109 places, 97 transitions, 741 flow. Second operand 15 states and 1792 transitions. [2023-08-27 02:46:51,265 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 234 transitions, 1944 flow [2023-08-27 02:46:51,296 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 234 transitions, 1918 flow, removed 13 selfloop flow, removed 0 redundant places. [2023-08-27 02:46:51,298 INFO L231 Difference]: Finished difference. Result has 135 places, 128 transitions, 1164 flow [2023-08-27 02:46:51,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1164, PETRI_PLACES=135, PETRI_TRANSITIONS=128} [2023-08-27 02:46:51,298 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 91 predicate places. [2023-08-27 02:46:51,299 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 128 transitions, 1164 flow [2023-08-27 02:46:51,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 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) [2023-08-27 02:46:51,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:51,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:51,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 02:46:51,299 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:51,300 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:51,300 INFO L85 PathProgramCache]: Analyzing trace with hash 571502484, now seen corresponding path program 3 times [2023-08-27 02:46:51,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:51,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693138124] [2023-08-27 02:46:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:51,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:51,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 02:46:52,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 02:46:52,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 02:46:52,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693138124] [2023-08-27 02:46:52,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693138124] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 02:46:52,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 02:46:52,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-08-27 02:46:52,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298300256] [2023-08-27 02:46:52,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 02:46:52,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 02:46:52,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 02:46:52,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 02:46:52,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2023-08-27 02:46:52,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 363 [2023-08-27 02:46:52,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 128 transitions, 1164 flow. Second operand has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 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) [2023-08-27 02:46:52,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 02:46:52,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 363 [2023-08-27 02:46:52,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 02:46:53,482 INFO L124 PetriNetUnfolderBase]: 2851/5192 cut-off events. [2023-08-27 02:46:53,482 INFO L125 PetriNetUnfolderBase]: For 11570/11570 co-relation queries the response was YES. [2023-08-27 02:46:53,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19813 conditions, 5192 events. 2851/5192 cut-off events. For 11570/11570 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 29183 event pairs, 763 based on Foata normal form. 20/5170 useless extension candidates. Maximal degree in co-relation 19581. Up to 2700 conditions per place. [2023-08-27 02:46:53,504 INFO L140 encePairwiseOnDemand]: 344/363 looper letters, 194 selfloop transitions, 51 changer transitions 0/246 dead transitions. [2023-08-27 02:46:53,504 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 246 transitions, 2290 flow [2023-08-27 02:46:53,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-08-27 02:46:53,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-08-27 02:46:53,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1792 transitions. [2023-08-27 02:46:53,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32910927456382 [2023-08-27 02:46:53,509 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1792 transitions. [2023-08-27 02:46:53,509 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1792 transitions. [2023-08-27 02:46:53,510 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 02:46:53,510 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1792 transitions. [2023-08-27 02:46:53,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 119.46666666666667) internal successors, (1792), 15 states have internal predecessors, (1792), 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) [2023-08-27 02:46:53,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 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) [2023-08-27 02:46:53,519 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 363.0) internal successors, (5808), 16 states have internal predecessors, (5808), 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) [2023-08-27 02:46:53,519 INFO L175 Difference]: Start difference. First operand has 135 places, 128 transitions, 1164 flow. Second operand 15 states and 1792 transitions. [2023-08-27 02:46:53,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 246 transitions, 2290 flow [2023-08-27 02:46:53,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 246 transitions, 2256 flow, removed 17 selfloop flow, removed 0 redundant places. [2023-08-27 02:46:53,570 INFO L231 Difference]: Finished difference. Result has 157 places, 142 transitions, 1471 flow [2023-08-27 02:46:53,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=363, PETRI_DIFFERENCE_MINUEND_FLOW=1136, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1471, PETRI_PLACES=157, PETRI_TRANSITIONS=142} [2023-08-27 02:46:53,571 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 113 predicate places. [2023-08-27 02:46:53,571 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 142 transitions, 1471 flow [2023-08-27 02:46:53,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 110.375) internal successors, (1766), 16 states have internal predecessors, (1766), 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) [2023-08-27 02:46:53,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 02:46:53,572 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:53,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 02:46:53,572 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 20 more)] === [2023-08-27 02:46:53,572 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 02:46:53,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1206480249, now seen corresponding path program 1 times [2023-08-27 02:46:53,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 02:46:53,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317533742] [2023-08-27 02:46:53,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 02:46:53,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 02:46:53,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:46:53,601 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-27 02:46:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-27 02:46:53,654 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-27 02:46:53,654 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-27 02:46:53,655 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t2Err2ASSERT_VIOLATIONASSERT (21 of 22 remaining) [2023-08-27 02:46:53,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 22 remaining) [2023-08-27 02:46:53,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 22 remaining) [2023-08-27 02:46:53,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (18 of 22 remaining) [2023-08-27 02:46:53,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 22 remaining) [2023-08-27 02:46:53,657 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err2ASSERT_VIOLATIONASSERT (9 of 22 remaining) [2023-08-27 02:46:53,658 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err2ASSERT_VIOLATIONASSERT (8 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 22 remaining) [2023-08-27 02:46:53,659 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 22 remaining) [2023-08-27 02:46:53,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 02:46:53,660 INFO L445 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 02:46:53,664 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 02:46:53,664 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 02:46:53,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 02:46:53 BasicIcfg [2023-08-27 02:46:53,737 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 02:46:53,738 INFO L158 Benchmark]: Toolchain (without parser) took 21164.98ms. Allocated memory was 396.4MB in the beginning and 918.6MB in the end (delta: 522.2MB). Free memory was 370.8MB in the beginning and 713.6MB in the end (delta: -342.8MB). Peak memory consumption was 182.3MB. Max. memory is 16.0GB. [2023-08-27 02:46:53,739 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 396.4MB. Free memory was 373.6MB in the beginning and 373.5MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 02:46:53,739 INFO L158 Benchmark]: CACSL2BoogieTranslator took 615.26ms. Allocated memory is still 396.4MB. Free memory was 370.8MB in the beginning and 341.1MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-27 02:46:53,739 INFO L158 Benchmark]: Boogie Procedure Inliner took 74.82ms. Allocated memory is still 396.4MB. Free memory was 341.1MB in the beginning and 338.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:46:53,739 INFO L158 Benchmark]: Boogie Preprocessor took 37.03ms. Allocated memory is still 396.4MB. Free memory was 338.5MB in the beginning and 336.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 02:46:53,740 INFO L158 Benchmark]: RCFGBuilder took 477.10ms. Allocated memory is still 396.4MB. Free memory was 336.4MB in the beginning and 317.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 02:46:53,740 INFO L158 Benchmark]: TraceAbstraction took 19953.67ms. Allocated memory was 396.4MB in the beginning and 918.6MB in the end (delta: 522.2MB). Free memory was 316.5MB in the beginning and 713.6MB in the end (delta: -397.1MB). Peak memory consumption was 127.8MB. Max. memory is 16.0GB. [2023-08-27 02:46:53,742 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 396.4MB. Free memory was 373.6MB in the beginning and 373.5MB in the end (delta: 86.1kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 615.26ms. Allocated memory is still 396.4MB. Free memory was 370.8MB in the beginning and 341.1MB in the end (delta: 29.7MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 74.82ms. Allocated memory is still 396.4MB. Free memory was 341.1MB in the beginning and 338.5MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 37.03ms. Allocated memory is still 396.4MB. Free memory was 338.5MB in the beginning and 336.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 477.10ms. Allocated memory is still 396.4MB. Free memory was 336.4MB in the beginning and 317.0MB in the end (delta: 19.4MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 19953.67ms. Allocated memory was 396.4MB in the beginning and 918.6MB in the end (delta: 522.2MB). Free memory was 316.5MB in the beginning and 713.6MB in the end (delta: -397.1MB). Peak memory consumption was 127.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 261]: Unsoundness Warning unspecified type, defaulting to int C: short [261] - GenericResultAtLocation [Line: 753]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [753] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.2s, 170 PlacesBefore, 44 PlacesAfterwards, 175 TransitionsBefore, 42 TransitionsAfterwards, 10550 CoEnabledTransitionPairs, 6 FixpointIterations, 30 TrivialSequentialCompositions, 118 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 22 ConcurrentYvCompositions, 7 ChoiceCompositions, 177 TotalNumberOfCompositions, 14512 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 10587, independent: 10371, independent conditional: 0, independent unconditional: 10371, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 6195, independent: 6146, independent conditional: 0, independent unconditional: 6146, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 10587, independent: 4225, independent conditional: 0, independent unconditional: 4225, dependent: 167, dependent conditional: 0, dependent unconditional: 167, unknown: 6195, unknown conditional: 0, unknown unconditional: 6195] , Statistics on independence cache: Total cache size (in pairs): 233, Positive cache size: 210, Positive conditional cache size: 0, Positive unconditional cache size: 210, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 20]: assertion can be violated assertion can be violated We found a FailurePath: [L935] 0 static int top=0; [L936] 0 static unsigned int arr[(5)]; [L937] 0 pthread_mutex_t m; [L938] 0 _Bool flag=(0); [L1021] 0 pthread_t id1, id2; [L1023] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [arr={3:0}, flag=0, id1={9:0}, id2={6:0}, m={4:0}, pthread_create(&id1, ((void *)0), t1, ((void *)0))=13, top=0] [L990] 1 int i; [L991] 1 unsigned int tmp; [L992] 1 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L1024] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [arr={3:0}, flag=0, id1={9:0}, id2={6:0}, m={4:0}, pthread_create(&id2, ((void *)0), t2, ((void *)0))=14, top=0] [L1006] 2 int i; [L1007] 2 i=0 VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=0, i=0, m={4:0}, top=0] [L992] COND TRUE 1 i<(5) [L995] 1 tmp = __VERIFIER_nondet_uint() [L996] CALL 1 assume_abort_if_not(tmp < (5)) [L23] COND FALSE 1 !(!cond) [L996] RET 1 assume_abort_if_not(tmp < (5)) [L997] CALL, EXPR 1 push(arr,tmp) [L962] COND FALSE 1 !(top==(5)) [L969] CALL, EXPR 1 get_top() [L954] 1 return top; [L969] RET, EXPR 1 get_top() [L969] 1 stack[get_top()] = x VAL [\old(x)=4, arr={3:0}, flag=0, get_top()=0, m={4:0}, stack={3:0}, stack={3:0}, top=0, x=4] [L970] CALL 1 inc_top() [L946] 1 top++ [L970] RET 1 inc_top() [L972] 1 return 0; [L997] RET, EXPR 1 push(arr,tmp) [L997] COND FALSE 1 !(push(arr,tmp)==(-1)) [L999] 1 flag=(1) VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=0, m={4:0}, tmp=4, top=1] [L992] 1 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, tmp=4, top=1] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; VAL [\result=0, \result=1, arr={3:0}, flag=1, m={4:0}, top=1] [L976] RET, EXPR 2 get_top() [L976] COND FALSE 2 !(get_top()==0) [L983] CALL 2 dec_top() [L950] 2 top-- VAL [arr={3:0}, flag=1, m={4:0}, top=0] [L983] RET 2 dec_top() [L984] CALL, EXPR 2 get_top() [L954] 2 return top; [L984] RET, EXPR 2 get_top() [L984] EXPR 2 stack[get_top()] [L984] 2 return stack[get_top()]; [L1012] RET, EXPR 2 pop(arr) [L1012] COND FALSE 2 !(!(pop(arr)!=(-2))) [L1007] 2 i++ VAL [arg={0:0}, arg={0:0}, arr={3:0}, flag=1, i=1, m={4:0}, top=0] [L1007] COND TRUE 2 i<(5) [L1010] COND TRUE 2 \read(flag) [L1012] CALL, EXPR 2 pop(arr) [L976] CALL, EXPR 2 get_top() [L954] 2 return top; [L976] RET, EXPR 2 get_top() [L976] COND TRUE 2 get_top()==0 [L979] 2 return (-2); [L1012] RET, EXPR 2 pop(arr) [L1012] COND TRUE 2 !(pop(arr)!=(-2)) [L1013] CALL 2 error() [L941] CALL 2 reach_error() [L20] COND FALSE 2 !(0) [L20] 2 __assert_fail ("0", "stack-2.c", 3, __extension__ __PRETTY_FUNCTION__) VAL [\read(__PRETTY_FUNCTION__)={49:50}, arr={3:0}, flag=1, m={4:0}, top=0] - UnprovableResult [Line: 1024]: 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. - UnprovableResult [Line: 1023]: 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. - UnprovableResult [Line: 20]: Unable to prove that assertion always holds Unable to prove that assertion always holds Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 992]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 946]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 992]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 1007]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 950]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - UnprovableResult [Line: 950]: Unable to prove that integer overflow can never occur Unable to prove that integer overflow can never occur Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 298 locations, 22 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 19.7s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 10.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1056 SdHoareTripleChecker+Valid, 3.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1056 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 69 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5836 IncrementalHoareTripleChecker+Invalid, 5905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 69 mSolverCounterUnsat, 0 mSDtfsCounter, 5836 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 171 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1471occurred in iteration=15, InterpolantAutomatonStates: 107, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 296 NumberOfCodeBlocks, 296 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 1777 SizeOfPredicates, 2 NumberOfNonLiveVariables, 572 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 19 InterpolantComputations, 14 PerfectInterpolantSequences, 32/47 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! [2023-08-27 02:46:53,763 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...