/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/weaver/chl-poker-hand-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 06:29:51,462 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 06:29:51,546 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 06:29:51,551 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 06:29:51,552 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 06:29:51,589 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 06:29:51,590 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 06:29:51,595 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 06:29:51,596 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 06:29:51,599 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 06:29:51,600 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 06:29:51,600 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 06:29:51,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 06:29:51,601 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 06:29:51,601 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 06:29:51,602 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 06:29:51,602 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 06:29:51,603 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 06:29:51,603 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 06:29:51,603 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 06:29:51,603 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 06:29:51,604 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 06:29:51,605 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 06:29:51,605 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 06:29:51,605 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 06:29:51,606 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 06:29:51,606 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 06:29:51,606 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:29:51,606 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 06:29:51,606 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 06:29:51,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 06:29:51,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 06:29:51,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 06:29:51,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 06:29:51,608 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 06:29:51,609 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 06:29:51,968 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 06:29:51,997 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 06:29:51,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 06:29:52,001 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 06:29:52,001 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 06:29:52,002 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-poker-hand-subst.wvr.c [2023-08-27 06:29:53,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 06:29:53,515 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 06:29:53,516 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-poker-hand-subst.wvr.c [2023-08-27 06:29:53,530 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d516dda7/ad94d6c457904b62b371f4616de76058/FLAG9ffcbde84 [2023-08-27 06:29:53,544 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6d516dda7/ad94d6c457904b62b371f4616de76058 [2023-08-27 06:29:53,546 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 06:29:53,547 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 06:29:53,553 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 06:29:53,553 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 06:29:53,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 06:29:53,558 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:29:53" (1/1) ... [2023-08-27 06:29:53,559 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14267e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:53, skipping insertion in model container [2023-08-27 06:29:53,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:29:53" (1/1) ... [2023-08-27 06:29:53,610 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 06:29:53,972 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:29:53,988 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 06:29:54,120 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 06:29:54,127 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 06:29:54,128 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 06:29:54,136 INFO L206 MainTranslator]: Completed translation [2023-08-27 06:29:54,138 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54 WrapperNode [2023-08-27 06:29:54,138 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 06:29:54,141 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 06:29:54,141 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 06:29:54,141 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 06:29:54,147 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,188 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,281 INFO L138 Inliner]: procedures = 26, calls = 455, calls flagged for inlining = 101, calls inlined = 145, statements flattened = 2577 [2023-08-27 06:29:54,281 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 06:29:54,282 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 06:29:54,282 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 06:29:54,282 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 06:29:54,290 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,291 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,300 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,311 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,376 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,395 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,416 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,439 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 06:29:54,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 06:29:54,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 06:29:54,466 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 06:29:54,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (1/1) ... [2023-08-27 06:29:54,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 06:29:54,485 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:29:54,502 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 06:29:54,531 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 06:29:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 06:29:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 06:29:54,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 06:29:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 06:29:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 06:29:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 06:29:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 06:29:54,550 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 06:29:54,550 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 06:29:54,551 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 06:29:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 06:29:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 06:29:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 06:29:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-27 06:29:54,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 06:29:54,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 06:29:54,552 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 06:29:54,555 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 06:29:54,770 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 06:29:54,773 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 06:29:56,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 06:30:00,061 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 06:30:00,062 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-27 06:30:00,065 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:30:00 BoogieIcfgContainer [2023-08-27 06:30:00,065 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 06:30:00,068 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 06:30:00,068 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 06:30:00,071 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 06:30:00,072 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:29:53" (1/3) ... [2023-08-27 06:30:00,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3ee7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:30:00, skipping insertion in model container [2023-08-27 06:30:00,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:29:54" (2/3) ... [2023-08-27 06:30:00,073 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b3ee7e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:30:00, skipping insertion in model container [2023-08-27 06:30:00,073 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:30:00" (3/3) ... [2023-08-27 06:30:00,075 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-subst.wvr.c [2023-08-27 06:30:00,089 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 06:30:00,089 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 103 error locations. [2023-08-27 06:30:00,090 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 06:30:01,178 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 06:30:01,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 796 places, 865 transitions, 1754 flow [2023-08-27 06:30:01,609 INFO L124 PetriNetUnfolderBase]: 79/862 cut-off events. [2023-08-27 06:30:01,609 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:30:01,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 875 conditions, 862 events. 79/862 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1706 event pairs, 0 based on Foata normal form. 0/680 useless extension candidates. Maximal degree in co-relation 754. Up to 7 conditions per place. [2023-08-27 06:30:01,621 INFO L82 GeneralOperation]: Start removeDead. Operand has 796 places, 865 transitions, 1754 flow [2023-08-27 06:30:01,634 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 782 places, 851 transitions, 1720 flow [2023-08-27 06:30:01,637 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 06:30:01,645 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 782 places, 851 transitions, 1720 flow [2023-08-27 06:30:01,647 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 782 places, 851 transitions, 1720 flow [2023-08-27 06:30:01,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 782 places, 851 transitions, 1720 flow [2023-08-27 06:30:02,044 INFO L124 PetriNetUnfolderBase]: 79/851 cut-off events. [2023-08-27 06:30:02,045 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 06:30:02,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 851 events. 79/851 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1706 event pairs, 0 based on Foata normal form. 0/670 useless extension candidates. Maximal degree in co-relation 754. Up to 7 conditions per place. [2023-08-27 06:30:02,070 INFO L119 LiptonReduction]: Number of co-enabled transitions 45198 [2023-08-27 06:33:02,761 INFO L134 LiptonReduction]: Checked pairs total: 54767 [2023-08-27 06:33:02,761 INFO L136 LiptonReduction]: Total number of compositions: 1097 [2023-08-27 06:33:02,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 06:33:02,778 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;@5b7aa7f2, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 06:33:02,778 INFO L358 AbstractCegarLoop]: Starting to check reachability of 184 error locations. [2023-08-27 06:33:02,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 06:33:02,781 INFO L124 PetriNetUnfolderBase]: 1/2 cut-off events. [2023-08-27 06:33:02,781 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 06:33:02,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:33:02,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1] [2023-08-27 06:33:02,782 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:33:02,786 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:33:02,786 INFO L85 PathProgramCache]: Analyzing trace with hash 300583, now seen corresponding path program 1 times [2023-08-27 06:33:02,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:33:02,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591674889] [2023-08-27 06:33:02,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:33:02,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:33:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:33:03,143 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 06:33:03,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:33:03,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591674889] [2023-08-27 06:33:03,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591674889] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:33:03,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:33:03,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 06:33:03,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025026089] [2023-08-27 06:33:03,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:33:03,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:33:03,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:33:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:33:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:33:03,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 608 out of 1962 [2023-08-27 06:33:03,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 160 transitions, 338 flow. Second operand has 3 states, 3 states have (on average 608.6666666666666) internal successors, (1826), 3 states have internal predecessors, (1826), 0 states have call successors, (0), 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 06:33:03,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:33:03,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 608 of 1962 [2023-08-27 06:33:03,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:33:45,559 INFO L124 PetriNetUnfolderBase]: 58396/78817 cut-off events. [2023-08-27 06:33:45,560 INFO L125 PetriNetUnfolderBase]: For 1732/1732 co-relation queries the response was YES. [2023-08-27 06:33:45,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159028 conditions, 78817 events. 58396/78817 cut-off events. For 1732/1732 co-relation queries the response was YES. Maximal size of possible extension queue 6805. Compared 514151 event pairs, 47100 based on Foata normal form. 0/19591 useless extension candidates. Maximal degree in co-relation 152430. Up to 78795 conditions per place. [2023-08-27 06:33:46,041 INFO L140 encePairwiseOnDemand]: 1886/1962 looper letters, 132 selfloop transitions, 25 changer transitions 0/157 dead transitions. [2023-08-27 06:33:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 157 transitions, 646 flow [2023-08-27 06:33:46,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:33:46,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:33:46,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2032 transitions. [2023-08-27 06:33:46,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.345225959904859 [2023-08-27 06:33:46,066 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2032 transitions. [2023-08-27 06:33:46,067 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2032 transitions. [2023-08-27 06:33:46,070 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:33:46,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2032 transitions. [2023-08-27 06:33:46,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 677.3333333333334) internal successors, (2032), 3 states have internal predecessors, (2032), 0 states have call successors, (0), 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 06:33:46,094 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1962.0) internal successors, (7848), 4 states have internal predecessors, (7848), 0 states have call successors, (0), 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 06:33:46,098 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1962.0) internal successors, (7848), 4 states have internal predecessors, (7848), 0 states have call successors, (0), 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 06:33:46,100 INFO L175 Difference]: Start difference. First operand has 146 places, 160 transitions, 338 flow. Second operand 3 states and 2032 transitions. [2023-08-27 06:33:46,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 157 transitions, 646 flow [2023-08-27 06:33:46,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 157 transitions, 634 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 06:33:46,181 INFO L231 Difference]: Finished difference. Result has 117 places, 157 transitions, 516 flow [2023-08-27 06:33:46,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1962, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=516, PETRI_PLACES=117, PETRI_TRANSITIONS=157} [2023-08-27 06:33:46,185 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -29 predicate places. [2023-08-27 06:33:46,185 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 157 transitions, 516 flow [2023-08-27 06:33:46,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 608.6666666666666) internal successors, (1826), 3 states have internal predecessors, (1826), 0 states have call successors, (0), 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 06:33:46,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:33:46,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:33:46,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 06:33:46,187 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:33:46,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:33:46,188 INFO L85 PathProgramCache]: Analyzing trace with hash 9334820, now seen corresponding path program 1 times [2023-08-27 06:33:46,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:33:46,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636905038] [2023-08-27 06:33:46,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:33:46,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:33:46,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:33:46,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:33:46,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:33:46,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636905038] [2023-08-27 06:33:46,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636905038] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:33:46,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533179021] [2023-08-27 06:33:46,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:33:46,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:33:46,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:33:46,337 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 06:33:46,338 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 06:33:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:33:47,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:33:47,527 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:33:47,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:33:47,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:33:47,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533179021] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:33:47,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:33:47,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 06:33:47,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413848744] [2023-08-27 06:33:47,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:33:47,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 06:33:47,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:33:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 06:33:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 06:33:47,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 608 out of 1962 [2023-08-27 06:33:47,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 157 transitions, 516 flow. Second operand has 4 states, 4 states have (on average 608.75) internal successors, (2435), 4 states have internal predecessors, (2435), 0 states have call successors, (0), 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 06:33:47,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:33:47,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 608 of 1962 [2023-08-27 06:33:47,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:34:28,947 INFO L124 PetriNetUnfolderBase]: 58396/78805 cut-off events. [2023-08-27 06:34:28,947 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-08-27 06:34:29,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158163 conditions, 78805 events. 58396/78805 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 6690. Compared 515703 event pairs, 47100 based on Foata normal form. 0/19613 useless extension candidates. Maximal degree in co-relation 157951. Up to 78747 conditions per place. [2023-08-27 06:34:29,367 INFO L140 encePairwiseOnDemand]: 1925/1962 looper letters, 119 selfloop transitions, 26 changer transitions 0/145 dead transitions. [2023-08-27 06:34:29,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 145 transitions, 758 flow [2023-08-27 06:34:29,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 06:34:29,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 06:34:29,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 2589 transitions. [2023-08-27 06:34:29,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32989296636085624 [2023-08-27 06:34:29,377 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 2589 transitions. [2023-08-27 06:34:29,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 2589 transitions. [2023-08-27 06:34:29,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:34:29,381 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 2589 transitions. [2023-08-27 06:34:29,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 647.25) internal successors, (2589), 4 states have internal predecessors, (2589), 0 states have call successors, (0), 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 06:34:29,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 1962.0) internal successors, (9810), 5 states have internal predecessors, (9810), 0 states have call successors, (0), 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 06:34:29,410 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 1962.0) internal successors, (9810), 5 states have internal predecessors, (9810), 0 states have call successors, (0), 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 06:34:29,411 INFO L175 Difference]: Start difference. First operand has 117 places, 157 transitions, 516 flow. Second operand 4 states and 2589 transitions. [2023-08-27 06:34:29,411 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 145 transitions, 758 flow [2023-08-27 06:34:29,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 145 transitions, 708 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:34:29,418 INFO L231 Difference]: Finished difference. Result has 106 places, 145 transitions, 470 flow [2023-08-27 06:34:29,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1962, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=470, PETRI_PLACES=106, PETRI_TRANSITIONS=145} [2023-08-27 06:34:29,420 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -40 predicate places. [2023-08-27 06:34:29,420 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 145 transitions, 470 flow [2023-08-27 06:34:29,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 608.75) internal successors, (2435), 4 states have internal predecessors, (2435), 0 states have call successors, (0), 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 06:34:29,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:34:29,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 06:34:29,434 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 06:34:29,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:34:29,633 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:34:29,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:34:29,633 INFO L85 PathProgramCache]: Analyzing trace with hash 9334920, now seen corresponding path program 1 times [2023-08-27 06:34:29,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:34:29,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195824665] [2023-08-27 06:34:29,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:34:29,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:34:29,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:34:29,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:34:29,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:34:29,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195824665] [2023-08-27 06:34:29,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195824665] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:34:29,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1708425336] [2023-08-27 06:34:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:34:29,729 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:34:29,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:34:29,730 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 06:34:29,780 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 06:34:30,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:34:30,924 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 06:34:30,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:34:30,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:34:30,934 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:34:30,948 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:34:30,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1708425336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:34:30,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:34:30,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 06:34:30,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714509099] [2023-08-27 06:34:30,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:34:30,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 06:34:30,950 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:34:30,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 06:34:30,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 06:34:30,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 608 out of 1962 [2023-08-27 06:34:30,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 145 transitions, 470 flow. Second operand has 7 states, 7 states have (on average 609.1428571428571) internal successors, (4264), 7 states have internal predecessors, (4264), 0 states have call successors, (0), 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 06:34:30,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:34:30,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 608 of 1962 [2023-08-27 06:34:30,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:35:12,158 INFO L124 PetriNetUnfolderBase]: 58432/78877 cut-off events. [2023-08-27 06:35:12,158 INFO L125 PetriNetUnfolderBase]: For 420/420 co-relation queries the response was YES. [2023-08-27 06:35:12,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158416 conditions, 78877 events. 58432/78877 cut-off events. For 420/420 co-relation queries the response was YES. Maximal size of possible extension queue 6615. Compared 512199 event pairs, 47100 based on Foata normal form. 0/19686 useless extension candidates. Maximal degree in co-relation 157951. Up to 78786 conditions per place. [2023-08-27 06:35:12,524 INFO L140 encePairwiseOnDemand]: 1925/1962 looper letters, 120 selfloop transitions, 97 changer transitions 0/217 dead transitions. [2023-08-27 06:35:12,524 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 217 transitions, 1264 flow [2023-08-27 06:35:12,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 06:35:12,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 06:35:12,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3901 transitions. [2023-08-27 06:35:12,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33137954468229697 [2023-08-27 06:35:12,535 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3901 transitions. [2023-08-27 06:35:12,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3901 transitions. [2023-08-27 06:35:12,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:35:12,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3901 transitions. [2023-08-27 06:35:12,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 650.1666666666666) internal successors, (3901), 6 states have internal predecessors, (3901), 0 states have call successors, (0), 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 06:35:12,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 1962.0) internal successors, (13734), 7 states have internal predecessors, (13734), 0 states have call successors, (0), 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 06:35:12,565 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 1962.0) internal successors, (13734), 7 states have internal predecessors, (13734), 0 states have call successors, (0), 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 06:35:12,565 INFO L175 Difference]: Start difference. First operand has 106 places, 145 transitions, 470 flow. Second operand 6 states and 3901 transitions. [2023-08-27 06:35:12,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 217 transitions, 1264 flow [2023-08-27 06:35:12,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 217 transitions, 1200 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:35:12,575 INFO L231 Difference]: Finished difference. Result has 112 places, 217 transitions, 1166 flow [2023-08-27 06:35:12,575 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1962, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1166, PETRI_PLACES=112, PETRI_TRANSITIONS=217} [2023-08-27 06:35:12,576 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -34 predicate places. [2023-08-27 06:35:12,576 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 217 transitions, 1166 flow [2023-08-27 06:35:12,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 609.1428571428571) internal successors, (4264), 7 states have internal predecessors, (4264), 0 states have call successors, (0), 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 06:35:12,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:35:12,578 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1] [2023-08-27 06:35:12,595 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 06:35:12,791 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,SelfDestructingSolverStorable2 [2023-08-27 06:35:12,791 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:35:12,792 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:35:12,792 INFO L85 PathProgramCache]: Analyzing trace with hash -1062621749, now seen corresponding path program 2 times [2023-08-27 06:35:12,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:35:12,792 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386449682] [2023-08-27 06:35:12,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:35:12,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:35:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:35:12,913 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 06:35:12,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:35:12,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386449682] [2023-08-27 06:35:12,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386449682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:35:12,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171157158] [2023-08-27 06:35:12,914 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:35:12,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:35:12,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:35:12,916 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 06:35:12,942 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 06:35:14,094 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:35:14,094 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:35:14,095 INFO L262 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:35:14,096 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:35:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:35:14,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:35:14,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1171157158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:35:14,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:35:14,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 06:35:14,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449974659] [2023-08-27 06:35:14,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:35:14,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:35:14,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:35:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:35:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:35:14,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1962 [2023-08-27 06:35:14,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 217 transitions, 1166 flow. Second operand has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 0 states have call successors, (0), 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 06:35:14,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:35:14,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1962 [2023-08-27 06:35:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:35:55,561 INFO L124 PetriNetUnfolderBase]: 58432/78868 cut-off events. [2023-08-27 06:35:55,561 INFO L125 PetriNetUnfolderBase]: For 443/443 co-relation queries the response was YES. [2023-08-27 06:35:55,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158533 conditions, 78868 events. 58432/78868 cut-off events. For 443/443 co-relation queries the response was YES. Maximal size of possible extension queue 6615. Compared 512309 event pairs, 47100 based on Foata normal form. 9/19699 useless extension candidates. Maximal degree in co-relation 158232. Up to 78835 conditions per place. [2023-08-27 06:35:55,905 INFO L140 encePairwiseOnDemand]: 1950/1962 looper letters, 197 selfloop transitions, 11 changer transitions 0/208 dead transitions. [2023-08-27 06:35:55,905 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 208 transitions, 1492 flow [2023-08-27 06:35:55,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:35:55,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:35:55,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1981 transitions. [2023-08-27 06:35:55,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33656133197417604 [2023-08-27 06:35:55,910 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1981 transitions. [2023-08-27 06:35:55,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1981 transitions. [2023-08-27 06:35:55,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:35:55,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1981 transitions. [2023-08-27 06:35:55,915 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 660.3333333333334) internal successors, (1981), 3 states have internal predecessors, (1981), 0 states have call successors, (0), 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 06:35:55,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1962.0) internal successors, (7848), 4 states have internal predecessors, (7848), 0 states have call successors, (0), 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 06:35:55,924 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1962.0) internal successors, (7848), 4 states have internal predecessors, (7848), 0 states have call successors, (0), 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 06:35:55,924 INFO L175 Difference]: Start difference. First operand has 112 places, 217 transitions, 1166 flow. Second operand 3 states and 1981 transitions. [2023-08-27 06:35:55,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 208 transitions, 1492 flow [2023-08-27 06:35:55,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 208 transitions, 1356 flow, removed 39 selfloop flow, removed 1 redundant places. [2023-08-27 06:35:55,930 INFO L231 Difference]: Finished difference. Result has 104 places, 208 transitions, 962 flow [2023-08-27 06:35:55,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1962, PETRI_DIFFERENCE_MINUEND_FLOW=940, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=962, PETRI_PLACES=104, PETRI_TRANSITIONS=208} [2023-08-27 06:35:55,931 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -42 predicate places. [2023-08-27 06:35:55,932 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 208 transitions, 962 flow [2023-08-27 06:35:55,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 621.0) internal successors, (1863), 3 states have internal predecessors, (1863), 0 states have call successors, (0), 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 06:35:55,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:35:55,933 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1] [2023-08-27 06:35:55,947 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 06:35:56,144 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:35:56,145 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:35:56,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:35:56,145 INFO L85 PathProgramCache]: Analyzing trace with hash 825619385, now seen corresponding path program 1 times [2023-08-27 06:35:56,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:35:56,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442199030] [2023-08-27 06:35:56,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:35:56,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:35:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:35:56,238 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 06:35:56,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:35:56,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442199030] [2023-08-27 06:35:56,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442199030] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:35:56,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 06:35:56,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 06:35:56,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982559620] [2023-08-27 06:35:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:35:56,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:35:56,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:35:56,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:35:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 06:35:56,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1962 [2023-08-27 06:35:56,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 208 transitions, 962 flow. Second operand has 3 states, 3 states have (on average 562.0) internal successors, (1686), 3 states have internal predecessors, (1686), 0 states have call successors, (0), 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 06:35:56,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:35:56,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1962 [2023-08-27 06:35:56,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:36:37,200 INFO L124 PetriNetUnfolderBase]: 58429/78865 cut-off events. [2023-08-27 06:36:37,200 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-08-27 06:36:37,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158451 conditions, 78865 events. 58429/78865 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 6615. Compared 512152 event pairs, 47100 based on Foata normal form. 3/19690 useless extension candidates. Maximal degree in co-relation 158192. Up to 78857 conditions per place. [2023-08-27 06:36:37,548 INFO L140 encePairwiseOnDemand]: 1955/1962 looper letters, 193 selfloop transitions, 12 changer transitions 0/205 dead transitions. [2023-08-27 06:36:37,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 205 transitions, 1358 flow [2023-08-27 06:36:37,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 06:36:37,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 06:36:37,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1798 transitions. [2023-08-27 06:36:37,553 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3054706082229018 [2023-08-27 06:36:37,553 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1798 transitions. [2023-08-27 06:36:37,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1798 transitions. [2023-08-27 06:36:37,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:36:37,554 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1798 transitions. [2023-08-27 06:36:37,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 599.3333333333334) internal successors, (1798), 3 states have internal predecessors, (1798), 0 states have call successors, (0), 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 06:36:37,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1962.0) internal successors, (7848), 4 states have internal predecessors, (7848), 0 states have call successors, (0), 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 06:36:37,565 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1962.0) internal successors, (7848), 4 states have internal predecessors, (7848), 0 states have call successors, (0), 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 06:36:37,565 INFO L175 Difference]: Start difference. First operand has 104 places, 208 transitions, 962 flow. Second operand 3 states and 1798 transitions. [2023-08-27 06:36:37,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 205 transitions, 1358 flow [2023-08-27 06:36:37,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 205 transitions, 1338 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 06:36:37,570 INFO L231 Difference]: Finished difference. Result has 104 places, 205 transitions, 952 flow [2023-08-27 06:36:37,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1962, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=952, PETRI_PLACES=104, PETRI_TRANSITIONS=205} [2023-08-27 06:36:37,571 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -42 predicate places. [2023-08-27 06:36:37,572 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 205 transitions, 952 flow [2023-08-27 06:36:37,572 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 562.0) internal successors, (1686), 3 states have internal predecessors, (1686), 0 states have call successors, (0), 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 06:36:37,572 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:36:37,572 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 06:36:37,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 06:36:37,573 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:36:37,573 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:36:37,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1562002296, now seen corresponding path program 1 times [2023-08-27 06:36:37,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:36:37,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937909340] [2023-08-27 06:36:37,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:36:37,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:36:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:36:37,734 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 06:36:37,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:36:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937909340] [2023-08-27 06:36:37,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937909340] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:36:37,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142569025] [2023-08-27 06:36:37,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:36:37,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:36:37,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:36:37,741 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:36:37,745 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 06:36:38,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:36:38,876 INFO L262 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:36:38,877 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:36:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 06:36:38,902 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 06:36:38,920 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-27 06:36:38,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142569025] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 06:36:38,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 06:36:38,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-27 06:36:38,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497115881] [2023-08-27 06:36:38,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 06:36:38,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 06:36:38,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:36:38,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 06:36:38,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:36:38,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 560 out of 1962 [2023-08-27 06:36:38,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 205 transitions, 952 flow. Second operand has 8 states, 8 states have (on average 561.875) internal successors, (4495), 8 states have internal predecessors, (4495), 0 states have call successors, (0), 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 06:36:38,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:36:38,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 560 of 1962 [2023-08-27 06:36:38,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 06:37:20,777 INFO L124 PetriNetUnfolderBase]: 58396/78832 cut-off events. [2023-08-27 06:37:20,777 INFO L125 PetriNetUnfolderBase]: For 475/475 co-relation queries the response was YES. [2023-08-27 06:37:20,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158323 conditions, 78832 events. 58396/78832 cut-off events. For 475/475 co-relation queries the response was YES. Maximal size of possible extension queue 6616. Compared 511988 event pairs, 47100 based on Foata normal form. 33/19687 useless extension candidates. Maximal degree in co-relation 158253. Up to 78784 conditions per place. [2023-08-27 06:37:21,164 INFO L140 encePairwiseOnDemand]: 1934/1962 looper letters, 111 selfloop transitions, 61 changer transitions 0/172 dead transitions. [2023-08-27 06:37:21,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 172 transitions, 1080 flow [2023-08-27 06:37:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 06:37:21,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 06:37:21,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4661 transitions. [2023-08-27 06:37:21,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2969546381243629 [2023-08-27 06:37:21,173 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4661 transitions. [2023-08-27 06:37:21,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4661 transitions. [2023-08-27 06:37:21,176 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 06:37:21,176 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4661 transitions. [2023-08-27 06:37:21,183 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 582.625) internal successors, (4661), 8 states have internal predecessors, (4661), 0 states have call successors, (0), 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 06:37:21,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1962.0) internal successors, (17658), 9 states have internal predecessors, (17658), 0 states have call successors, (0), 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 06:37:21,204 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1962.0) internal successors, (17658), 9 states have internal predecessors, (17658), 0 states have call successors, (0), 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 06:37:21,204 INFO L175 Difference]: Start difference. First operand has 104 places, 205 transitions, 952 flow. Second operand 8 states and 4661 transitions. [2023-08-27 06:37:21,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 172 transitions, 1080 flow [2023-08-27 06:37:21,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 172 transitions, 1074 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 06:37:21,209 INFO L231 Difference]: Finished difference. Result has 110 places, 172 transitions, 852 flow [2023-08-27 06:37:21,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1962, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=852, PETRI_PLACES=110, PETRI_TRANSITIONS=172} [2023-08-27 06:37:21,209 INFO L281 CegarLoopForPetriNet]: 146 programPoint places, -36 predicate places. [2023-08-27 06:37:21,210 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 172 transitions, 852 flow [2023-08-27 06:37:21,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 561.875) internal successors, (4495), 8 states have internal predecessors, (4495), 0 states have call successors, (0), 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 06:37:21,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 06:37:21,211 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1] [2023-08-27 06:37:21,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 06:37:21,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:37:21,423 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (and 181 more)] === [2023-08-27 06:37:21,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 06:37:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash -502434567, now seen corresponding path program 2 times [2023-08-27 06:37:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 06:37:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813550568] [2023-08-27 06:37:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 06:37:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 06:37:21,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 06:37:21,694 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2023-08-27 06:37:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 06:37:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813550568] [2023-08-27 06:37:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813550568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 06:37:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772815395] [2023-08-27 06:37:21,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 06:37:21,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 06:37:21,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 06:37:21,696 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 06:37:21,698 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 06:37:22,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 06:37:22,907 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 06:37:22,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-27 06:37:22,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 06:37:22,923 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2023-08-27 06:37:22,923 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 06:37:22,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772815395] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 06:37:22,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 06:37:22,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 8 [2023-08-27 06:37:22,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418394161] [2023-08-27 06:37:22,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 06:37:22,931 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 06:37:22,931 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 06:37:22,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 06:37:22,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2023-08-27 06:37:22,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 620 out of 1962 [2023-08-27 06:37:22,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 172 transitions, 852 flow. Second operand has 3 states, 3 states have (on average 623.0) internal successors, (1869), 3 states have internal predecessors, (1869), 0 states have call successors, (0), 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 06:37:22,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 06:37:22,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 620 of 1962 [2023-08-27 06:37:22,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand