/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/parallel-ticket-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 07:10:03,651 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 07:10:03,738 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 07:10:03,742 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 07:10:03,742 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 07:10:03,771 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 07:10:03,771 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 07:10:03,772 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 07:10:03,772 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 07:10:03,776 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 07:10:03,776 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 07:10:03,776 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 07:10:03,777 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 07:10:03,778 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 07:10:03,778 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 07:10:03,778 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 07:10:03,779 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 07:10:03,779 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 07:10:03,779 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 07:10:03,779 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 07:10:03,780 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 07:10:03,780 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 07:10:03,781 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 07:10:03,781 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 07:10:03,781 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 07:10:03,782 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 07:10:03,782 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 07:10:03,782 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:10:03,782 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 07:10:03,783 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 07:10:03,783 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 07:10:03,784 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 07:10:03,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 07:10:03,784 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 07:10:03,784 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 07:10:03,785 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 07:10:04,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 07:10:04,112 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 07:10:04,114 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 07:10:04,115 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 07:10:04,116 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 07:10:04,117 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-27 07:10:05,321 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 07:10:05,556 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 07:10:05,556 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-4.wvr.c [2023-08-27 07:10:05,564 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c2885373/9df9827189bc40329c19973c4659ebfd/FLAG29aa2461f [2023-08-27 07:10:05,580 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c2885373/9df9827189bc40329c19973c4659ebfd [2023-08-27 07:10:05,582 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 07:10:05,583 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 07:10:05,584 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 07:10:05,584 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 07:10:05,588 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 07:10:05,588 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,589 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f94b892 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05, skipping insertion in model container [2023-08-27 07:10:05,589 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,609 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 07:10:05,761 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:10:05,773 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 07:10:05,797 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 07:10:05,803 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:10:05,803 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 07:10:05,809 INFO L206 MainTranslator]: Completed translation [2023-08-27 07:10:05,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05 WrapperNode [2023-08-27 07:10:05,809 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 07:10:05,810 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 07:10:05,810 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 07:10:05,810 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 07:10:05,815 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,821 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,846 INFO L138 Inliner]: procedures = 23, calls = 71, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 224 [2023-08-27 07:10:05,846 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 07:10:05,847 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 07:10:05,847 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 07:10:05,847 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 07:10:05,858 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,858 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,870 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,870 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,875 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,879 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,890 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 07:10:05,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 07:10:05,891 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 07:10:05,891 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 07:10:05,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (1/1) ... [2023-08-27 07:10:05,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 07:10:05,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 07:10:05,923 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 07:10:05,934 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 07:10:05,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 07:10:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 07:10:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 07:10:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 07:10:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 07:10:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 07:10:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 07:10:05,953 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 07:10:05,953 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 07:10:05,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 07:10:05,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 07:10:05,956 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 07:10:06,045 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 07:10:06,046 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 07:10:06,356 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 07:10:06,477 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 07:10:06,478 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 07:10:06,482 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:10:06 BoogieIcfgContainer [2023-08-27 07:10:06,483 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 07:10:06,485 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 07:10:06,485 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 07:10:06,487 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 07:10:06,487 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 07:10:05" (1/3) ... [2023-08-27 07:10:06,488 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a564672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:10:06, skipping insertion in model container [2023-08-27 07:10:06,488 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 07:10:05" (2/3) ... [2023-08-27 07:10:06,489 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a564672 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 07:10:06, skipping insertion in model container [2023-08-27 07:10:06,489 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 07:10:06" (3/3) ... [2023-08-27 07:10:06,490 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2023-08-27 07:10:06,504 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 07:10:06,505 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 07:10:06,505 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 07:10:06,597 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 07:10:06,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 171 places, 160 transitions, 352 flow [2023-08-27 07:10:06,741 INFO L124 PetriNetUnfolderBase]: 2/156 cut-off events. [2023-08-27 07:10:06,741 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:10:06,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 173 conditions, 156 events. 2/156 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 115 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-08-27 07:10:06,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 171 places, 160 transitions, 352 flow [2023-08-27 07:10:06,752 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 154 places, 143 transitions, 310 flow [2023-08-27 07:10:06,755 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 07:10:06,764 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 154 places, 143 transitions, 310 flow [2023-08-27 07:10:06,768 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 154 places, 143 transitions, 310 flow [2023-08-27 07:10:06,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 143 transitions, 310 flow [2023-08-27 07:10:06,813 INFO L124 PetriNetUnfolderBase]: 2/143 cut-off events. [2023-08-27 07:10:06,813 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 07:10:06,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160 conditions, 143 events. 2/143 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 114 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 116. Up to 2 conditions per place. [2023-08-27 07:10:06,815 INFO L119 LiptonReduction]: Number of co-enabled transitions 2622 [2023-08-27 07:10:11,247 INFO L134 LiptonReduction]: Checked pairs total: 16377 [2023-08-27 07:10:11,247 INFO L136 LiptonReduction]: Total number of compositions: 102 [2023-08-27 07:10:11,258 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 07:10:11,262 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;@5ba91d78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 07:10:11,262 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 07:10:11,264 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 07:10:11,264 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-27 07:10:11,264 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 07:10:11,264 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:11,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:10:11,265 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:11,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:11,268 INFO L85 PathProgramCache]: Analyzing trace with hash 654796, now seen corresponding path program 1 times [2023-08-27 07:10:11,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:11,274 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949731960] [2023-08-27 07:10:11,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:11,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:11,556 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 07:10:11,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:11,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949731960] [2023-08-27 07:10:11,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949731960] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:11,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:11,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:10:11,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740160716] [2023-08-27 07:10:11,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:11,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:11,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:11,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:11,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:10:11,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:11,599 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 124 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 07:10:11,599 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:11,599 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:11,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:13,570 INFO L124 PetriNetUnfolderBase]: 17952/25211 cut-off events. [2023-08-27 07:10:13,571 INFO L125 PetriNetUnfolderBase]: For 1328/1328 co-relation queries the response was YES. [2023-08-27 07:10:13,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50770 conditions, 25211 events. 17952/25211 cut-off events. For 1328/1328 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 169336 event pairs, 17952 based on Foata normal form. 0/14863 useless extension candidates. Maximal degree in co-relation 44870. Up to 24353 conditions per place. [2023-08-27 07:10:13,757 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 40 selfloop transitions, 1 changer transitions 0/46 dead transitions. [2023-08-27 07:10:13,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 198 flow [2023-08-27 07:10:13,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:10:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:10:13,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 399 transitions. [2023-08-27 07:10:13,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076335877862596 [2023-08-27 07:10:13,769 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 399 transitions. [2023-08-27 07:10:13,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 399 transitions. [2023-08-27 07:10:13,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:13,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 399 transitions. [2023-08-27 07:10:13,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 0 states have call successors, (0), 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 07:10:13,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:13,779 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:13,781 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 124 flow. Second operand 3 states and 399 transitions. [2023-08-27 07:10:13,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 198 flow [2023-08-27 07:10:13,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 46 transitions, 182 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 07:10:13,800 INFO L231 Difference]: Finished difference. Result has 53 places, 46 transitions, 102 flow [2023-08-27 07:10:13,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=53, PETRI_TRANSITIONS=46} [2023-08-27 07:10:13,804 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -10 predicate places. [2023-08-27 07:10:13,804 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 46 transitions, 102 flow [2023-08-27 07:10:13,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 07:10:13,805 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:13,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 07:10:13,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 07:10:13,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:13,806 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:13,806 INFO L85 PathProgramCache]: Analyzing trace with hash 654797, now seen corresponding path program 1 times [2023-08-27 07:10:13,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:13,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832089205] [2023-08-27 07:10:13,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:13,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:13,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:13,918 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 07:10:13,919 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:13,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832089205] [2023-08-27 07:10:13,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832089205] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:13,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:13,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:10:13,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780461728] [2023-08-27 07:10:13,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:13,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:13,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:13,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:13,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:10:13,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:13,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 46 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 07:10:13,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:13,923 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:13,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:15,637 INFO L124 PetriNetUnfolderBase]: 17791/25080 cut-off events. [2023-08-27 07:10:15,637 INFO L125 PetriNetUnfolderBase]: For 342/342 co-relation queries the response was YES. [2023-08-27 07:10:15,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49613 conditions, 25080 events. 17791/25080 cut-off events. For 342/342 co-relation queries the response was YES. Maximal size of possible extension queue 1686. Compared 170561 event pairs, 13626 based on Foata normal form. 0/14978 useless extension candidates. Maximal degree in co-relation 49607. Up to 24132 conditions per place. [2023-08-27 07:10:15,756 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 47 selfloop transitions, 5 changer transitions 0/57 dead transitions. [2023-08-27 07:10:15,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 57 transitions, 231 flow [2023-08-27 07:10:15,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:10:15,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:10:15,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 410 transitions. [2023-08-27 07:10:15,760 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5216284987277354 [2023-08-27 07:10:15,760 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 410 transitions. [2023-08-27 07:10:15,760 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 410 transitions. [2023-08-27 07:10:15,761 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:15,761 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 410 transitions. [2023-08-27 07:10:15,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 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 07:10:15,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:15,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:15,765 INFO L175 Difference]: Start difference. First operand has 53 places, 46 transitions, 102 flow. Second operand 3 states and 410 transitions. [2023-08-27 07:10:15,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 57 transitions, 231 flow [2023-08-27 07:10:15,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:15,768 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 140 flow [2023-08-27 07:10:15,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 07:10:15,769 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-27 07:10:15,771 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 140 flow [2023-08-27 07:10:15,773 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 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 07:10:15,773 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:15,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 07:10:15,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 07:10:15,778 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:15,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:15,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1963384374, now seen corresponding path program 1 times [2023-08-27 07:10:15,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:15,781 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908853826] [2023-08-27 07:10:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:15,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:15,911 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 07:10:15,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:15,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908853826] [2023-08-27 07:10:15,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908853826] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:15,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:10:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872630264] [2023-08-27 07:10:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:15,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:10:15,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:15,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:10:15,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:10:15,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:15,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 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 07:10:15,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:15,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:15,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:17,431 INFO L124 PetriNetUnfolderBase]: 16537/23462 cut-off events. [2023-08-27 07:10:17,431 INFO L125 PetriNetUnfolderBase]: For 2419/2419 co-relation queries the response was YES. [2023-08-27 07:10:17,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51830 conditions, 23462 events. 16537/23462 cut-off events. For 2419/2419 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 162193 event pairs, 7312 based on Foata normal form. 0/14136 useless extension candidates. Maximal degree in co-relation 51822. Up to 22292 conditions per place. [2023-08-27 07:10:17,554 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 70 selfloop transitions, 9 changer transitions 0/84 dead transitions. [2023-08-27 07:10:17,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 84 transitions, 380 flow [2023-08-27 07:10:17,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:10:17,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:10:17,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 555 transitions. [2023-08-27 07:10:17,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295801526717557 [2023-08-27 07:10:17,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 555 transitions. [2023-08-27 07:10:17,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 555 transitions. [2023-08-27 07:10:17,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:17,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 555 transitions. [2023-08-27 07:10:17,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.75) internal successors, (555), 4 states have internal predecessors, (555), 0 states have call successors, (0), 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 07:10:17,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 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 07:10:17,560 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 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 07:10:17,561 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 140 flow. Second operand 4 states and 555 transitions. [2023-08-27 07:10:17,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 84 transitions, 380 flow [2023-08-27 07:10:17,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 84 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:17,564 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 193 flow [2023-08-27 07:10:17,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-27 07:10:17,566 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-27 07:10:17,566 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 193 flow [2023-08-27 07:10:17,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 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 07:10:17,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:17,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:17,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 07:10:17,571 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:17,571 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:17,571 INFO L85 PathProgramCache]: Analyzing trace with hash -855846064, now seen corresponding path program 1 times [2023-08-27 07:10:17,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:17,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993544383] [2023-08-27 07:10:17,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:17,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:17,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:17,688 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 07:10:17,688 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:17,688 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993544383] [2023-08-27 07:10:17,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993544383] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:17,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:17,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:10:17,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248880425] [2023-08-27 07:10:17,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:17,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:17,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:17,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:17,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:10:17,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:17,692 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 193 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 07:10:17,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:17,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:17,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:18,522 INFO L124 PetriNetUnfolderBase]: 8608/12362 cut-off events. [2023-08-27 07:10:18,522 INFO L125 PetriNetUnfolderBase]: For 4290/4290 co-relation queries the response was YES. [2023-08-27 07:10:18,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31345 conditions, 12362 events. 8608/12362 cut-off events. For 4290/4290 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 78694 event pairs, 7616 based on Foata normal form. 0/8600 useless extension candidates. Maximal degree in co-relation 31335. Up to 11857 conditions per place. [2023-08-27 07:10:18,586 INFO L140 encePairwiseOnDemand]: 257/262 looper letters, 44 selfloop transitions, 1 changer transitions 0/50 dead transitions. [2023-08-27 07:10:18,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 275 flow [2023-08-27 07:10:18,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:10:18,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:10:18,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 395 transitions. [2023-08-27 07:10:18,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025445292620865 [2023-08-27 07:10:18,589 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 395 transitions. [2023-08-27 07:10:18,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 395 transitions. [2023-08-27 07:10:18,589 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:18,589 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 395 transitions. [2023-08-27 07:10:18,590 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 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 07:10:18,592 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:18,592 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:18,592 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 193 flow. Second operand 3 states and 395 transitions. [2023-08-27 07:10:18,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 275 flow [2023-08-27 07:10:18,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 50 transitions, 257 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 07:10:18,595 INFO L231 Difference]: Finished difference. Result has 54 places, 50 transitions, 169 flow [2023-08-27 07:10:18,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=54, PETRI_TRANSITIONS=50} [2023-08-27 07:10:18,596 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -9 predicate places. [2023-08-27 07:10:18,596 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 50 transitions, 169 flow [2023-08-27 07:10:18,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 07:10:18,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:18,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:18,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 07:10:18,597 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:18,597 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:18,598 INFO L85 PathProgramCache]: Analyzing trace with hash -855846063, now seen corresponding path program 1 times [2023-08-27 07:10:18,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:18,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194532769] [2023-08-27 07:10:18,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:18,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:18,646 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 07:10:18,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:18,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194532769] [2023-08-27 07:10:18,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194532769] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:18,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:18,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 07:10:18,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581959743] [2023-08-27 07:10:18,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:18,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 07:10:18,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:18,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 07:10:18,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 07:10:18,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:18,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 50 transitions, 169 flow. Second operand has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 07:10:18,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:18,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:18,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:19,247 INFO L124 PetriNetUnfolderBase]: 5879/8480 cut-off events. [2023-08-27 07:10:19,247 INFO L125 PetriNetUnfolderBase]: For 3476/3476 co-relation queries the response was YES. [2023-08-27 07:10:19,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21812 conditions, 8480 events. 5879/8480 cut-off events. For 3476/3476 co-relation queries the response was YES. Maximal size of possible extension queue 528. Compared 46924 event pairs, 1590 based on Foata normal form. 0/6241 useless extension candidates. Maximal degree in co-relation 21802. Up to 6830 conditions per place. [2023-08-27 07:10:19,282 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 67 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2023-08-27 07:10:19,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 77 transitions, 410 flow [2023-08-27 07:10:19,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 07:10:19,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 07:10:19,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-27 07:10:19,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5318066157760815 [2023-08-27 07:10:19,284 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-27 07:10:19,285 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-27 07:10:19,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:19,285 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-27 07:10:19,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 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 07:10:19,287 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:19,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 262.0) internal successors, (1048), 4 states have internal predecessors, (1048), 0 states have call successors, (0), 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 07:10:19,288 INFO L175 Difference]: Start difference. First operand has 54 places, 50 transitions, 169 flow. Second operand 3 states and 418 transitions. [2023-08-27 07:10:19,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 77 transitions, 410 flow [2023-08-27 07:10:19,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:19,293 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 207 flow [2023-08-27 07:10:19,293 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=207, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-08-27 07:10:19,295 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2023-08-27 07:10:19,295 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 207 flow [2023-08-27 07:10:19,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 0 states have call successors, (0), 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 07:10:19,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:19,296 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:19,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 07:10:19,296 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:19,296 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:19,296 INFO L85 PathProgramCache]: Analyzing trace with hash 1579539956, now seen corresponding path program 1 times [2023-08-27 07:10:19,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:19,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010716557] [2023-08-27 07:10:19,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:19,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:19,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:19,380 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 07:10:19,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:19,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010716557] [2023-08-27 07:10:19,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010716557] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:19,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:19,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:10:19,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347905626] [2023-08-27 07:10:19,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:19,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:19,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:19,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:19,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:19,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:19,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 207 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 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 07:10:19,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:19,387 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:19,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:19,758 INFO L124 PetriNetUnfolderBase]: 4421/6712 cut-off events. [2023-08-27 07:10:19,758 INFO L125 PetriNetUnfolderBase]: For 3321/3321 co-relation queries the response was YES. [2023-08-27 07:10:19,771 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18623 conditions, 6712 events. 4421/6712 cut-off events. For 3321/3321 co-relation queries the response was YES. Maximal size of possible extension queue 428. Compared 41218 event pairs, 786 based on Foata normal form. 0/5294 useless extension candidates. Maximal degree in co-relation 18611. Up to 5606 conditions per place. [2023-08-27 07:10:19,843 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 85 selfloop transitions, 13 changer transitions 0/103 dead transitions. [2023-08-27 07:10:19,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 103 transitions, 566 flow [2023-08-27 07:10:19,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:19,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-08-27 07:10:19,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221374045801527 [2023-08-27 07:10:19,848 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-08-27 07:10:19,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-08-27 07:10:19,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:19,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-08-27 07:10:19,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 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 07:10:19,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:19,853 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:19,853 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 207 flow. Second operand 5 states and 684 transitions. [2023-08-27 07:10:19,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 103 transitions, 566 flow [2023-08-27 07:10:19,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 103 transitions, 553 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:19,859 INFO L231 Difference]: Finished difference. Result has 60 places, 58 transitions, 276 flow [2023-08-27 07:10:19,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=276, PETRI_PLACES=60, PETRI_TRANSITIONS=58} [2023-08-27 07:10:19,861 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -3 predicate places. [2023-08-27 07:10:19,861 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 58 transitions, 276 flow [2023-08-27 07:10:19,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 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 07:10:19,862 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:19,862 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:19,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 07:10:19,862 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:19,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:19,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1596062011, now seen corresponding path program 1 times [2023-08-27 07:10:19,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:19,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529579148] [2023-08-27 07:10:19,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:19,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:19,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:19,980 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 07:10:19,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:19,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529579148] [2023-08-27 07:10:19,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529579148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:19,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:19,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:10:19,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128271266] [2023-08-27 07:10:19,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:19,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 07:10:19,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:19,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 07:10:19,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:10:19,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:19,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 58 transitions, 276 flow. Second operand has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 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 07:10:19,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:19,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:19,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:20,298 INFO L124 PetriNetUnfolderBase]: 3275/5072 cut-off events. [2023-08-27 07:10:20,298 INFO L125 PetriNetUnfolderBase]: For 5442/5442 co-relation queries the response was YES. [2023-08-27 07:10:20,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14885 conditions, 5072 events. 3275/5072 cut-off events. For 5442/5442 co-relation queries the response was YES. Maximal size of possible extension queue 284. Compared 30209 event pairs, 26 based on Foata normal form. 0/4348 useless extension candidates. Maximal degree in co-relation 14871. Up to 2194 conditions per place. [2023-08-27 07:10:20,316 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 100 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2023-08-27 07:10:20,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 122 transitions, 682 flow [2023-08-27 07:10:20,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:10:20,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:10:20,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 817 transitions. [2023-08-27 07:10:20,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5197201017811705 [2023-08-27 07:10:20,318 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 817 transitions. [2023-08-27 07:10:20,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 817 transitions. [2023-08-27 07:10:20,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:20,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 817 transitions. [2023-08-27 07:10:20,321 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.16666666666666) internal successors, (817), 6 states have internal predecessors, (817), 0 states have call successors, (0), 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 07:10:20,323 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 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 07:10:20,323 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 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 07:10:20,323 INFO L175 Difference]: Start difference. First operand has 60 places, 58 transitions, 276 flow. Second operand 6 states and 817 transitions. [2023-08-27 07:10:20,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 122 transitions, 682 flow [2023-08-27 07:10:20,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 122 transitions, 648 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:20,329 INFO L231 Difference]: Finished difference. Result has 58 places, 54 transitions, 244 flow [2023-08-27 07:10:20,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=244, PETRI_PLACES=58, PETRI_TRANSITIONS=54} [2023-08-27 07:10:20,329 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-27 07:10:20,329 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 54 transitions, 244 flow [2023-08-27 07:10:20,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 120.0) internal successors, (720), 6 states have internal predecessors, (720), 0 states have call successors, (0), 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 07:10:20,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:20,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:20,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 07:10:20,330 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:20,331 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:20,331 INFO L85 PathProgramCache]: Analyzing trace with hash 1552013878, now seen corresponding path program 1 times [2023-08-27 07:10:20,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:20,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327557223] [2023-08-27 07:10:20,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:20,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:20,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:20,400 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 07:10:20,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:20,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327557223] [2023-08-27 07:10:20,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327557223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:20,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:20,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 07:10:20,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463663384] [2023-08-27 07:10:20,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:20,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 07:10:20,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:20,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 07:10:20,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 07:10:20,403 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:20,403 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 54 transitions, 244 flow. Second operand has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 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 07:10:20,403 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:20,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:20,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:20,658 INFO L124 PetriNetUnfolderBase]: 2225/3331 cut-off events. [2023-08-27 07:10:20,658 INFO L125 PetriNetUnfolderBase]: For 5068/5068 co-relation queries the response was YES. [2023-08-27 07:10:20,662 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 3331 events. 2225/3331 cut-off events. For 5068/5068 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 15808 event pairs, 400 based on Foata normal form. 0/3134 useless extension candidates. Maximal degree in co-relation 9979. Up to 1380 conditions per place. [2023-08-27 07:10:20,670 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 86 selfloop transitions, 9 changer transitions 0/100 dead transitions. [2023-08-27 07:10:20,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 100 transitions, 660 flow [2023-08-27 07:10:20,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 07:10:20,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 07:10:20,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 547 transitions. [2023-08-27 07:10:20,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5219465648854962 [2023-08-27 07:10:20,675 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 547 transitions. [2023-08-27 07:10:20,675 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 547 transitions. [2023-08-27 07:10:20,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:20,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 547 transitions. [2023-08-27 07:10:20,678 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.75) internal successors, (547), 4 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 07:10:20,680 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 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 07:10:20,680 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 262.0) internal successors, (1310), 5 states have internal predecessors, (1310), 0 states have call successors, (0), 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 07:10:20,680 INFO L175 Difference]: Start difference. First operand has 58 places, 54 transitions, 244 flow. Second operand 4 states and 547 transitions. [2023-08-27 07:10:20,680 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 100 transitions, 660 flow [2023-08-27 07:10:20,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 100 transitions, 501 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-27 07:10:20,687 INFO L231 Difference]: Finished difference. Result has 55 places, 58 transitions, 231 flow [2023-08-27 07:10:20,688 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=231, PETRI_PLACES=55, PETRI_TRANSITIONS=58} [2023-08-27 07:10:20,689 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-27 07:10:20,689 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 58 transitions, 231 flow [2023-08-27 07:10:20,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 120.5) internal successors, (482), 4 states have internal predecessors, (482), 0 states have call successors, (0), 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 07:10:20,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:20,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:20,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 07:10:20,690 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:20,693 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash 1462622383, now seen corresponding path program 1 times [2023-08-27 07:10:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:20,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612644377] [2023-08-27 07:10:20,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:20,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:20,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:20,847 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 07:10:20,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:20,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612644377] [2023-08-27 07:10:20,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612644377] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:20,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:20,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 07:10:20,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392832688] [2023-08-27 07:10:20,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:20,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:20,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:20,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:20,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:20,850 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:20,850 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 58 transitions, 231 flow. Second operand has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 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 07:10:20,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:20,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:20,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:21,093 INFO L124 PetriNetUnfolderBase]: 1981/2941 cut-off events. [2023-08-27 07:10:21,093 INFO L125 PetriNetUnfolderBase]: For 2600/2600 co-relation queries the response was YES. [2023-08-27 07:10:21,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8174 conditions, 2941 events. 1981/2941 cut-off events. For 2600/2600 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13445 event pairs, 324 based on Foata normal form. 0/2910 useless extension candidates. Maximal degree in co-relation 8162. Up to 1134 conditions per place. [2023-08-27 07:10:21,104 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 101 selfloop transitions, 13 changer transitions 0/119 dead transitions. [2023-08-27 07:10:21,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 119 transitions, 642 flow [2023-08-27 07:10:21,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:21,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-08-27 07:10:21,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5221374045801527 [2023-08-27 07:10:21,107 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-08-27 07:10:21,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-08-27 07:10:21,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:21,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-08-27 07:10:21,109 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 0 states have call successors, (0), 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 07:10:21,111 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:21,111 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:21,111 INFO L175 Difference]: Start difference. First operand has 55 places, 58 transitions, 231 flow. Second operand 5 states and 684 transitions. [2023-08-27 07:10:21,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 119 transitions, 642 flow [2023-08-27 07:10:21,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 119 transitions, 624 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 07:10:21,116 INFO L231 Difference]: Finished difference. Result has 58 places, 62 transitions, 287 flow [2023-08-27 07:10:21,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=287, PETRI_PLACES=58, PETRI_TRANSITIONS=62} [2023-08-27 07:10:21,117 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -5 predicate places. [2023-08-27 07:10:21,117 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 62 transitions, 287 flow [2023-08-27 07:10:21,117 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 0 states have call successors, (0), 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 07:10:21,117 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:21,117 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, 1, 1, 1] [2023-08-27 07:10:21,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 07:10:21,117 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:21,118 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:21,118 INFO L85 PathProgramCache]: Analyzing trace with hash -84300853, now seen corresponding path program 1 times [2023-08-27 07:10:21,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:21,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673757040] [2023-08-27 07:10:21,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:21,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:21,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:21,218 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 07:10:21,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:21,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673757040] [2023-08-27 07:10:21,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673757040] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:21,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:21,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:10:21,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [747789782] [2023-08-27 07:10:21,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:21,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 07:10:21,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:21,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 07:10:21,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:10:21,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 262 [2023-08-27 07:10:21,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 62 transitions, 287 flow. Second operand has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 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 07:10:21,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:21,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 262 [2023-08-27 07:10:21,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:21,444 INFO L124 PetriNetUnfolderBase]: 1965/2905 cut-off events. [2023-08-27 07:10:21,444 INFO L125 PetriNetUnfolderBase]: For 3168/3168 co-relation queries the response was YES. [2023-08-27 07:10:21,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8309 conditions, 2905 events. 1965/2905 cut-off events. For 3168/3168 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 13217 event pairs, 320 based on Foata normal form. 0/2894 useless extension candidates. Maximal degree in co-relation 8296. Up to 1134 conditions per place. [2023-08-27 07:10:21,454 INFO L140 encePairwiseOnDemand]: 253/262 looper letters, 100 selfloop transitions, 17 changer transitions 0/122 dead transitions. [2023-08-27 07:10:21,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 122 transitions, 665 flow [2023-08-27 07:10:21,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:10:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:10:21,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 805 transitions. [2023-08-27 07:10:21,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5120865139949109 [2023-08-27 07:10:21,457 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 805 transitions. [2023-08-27 07:10:21,457 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 805 transitions. [2023-08-27 07:10:21,457 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:21,457 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 805 transitions. [2023-08-27 07:10:21,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 134.16666666666666) internal successors, (805), 6 states have internal predecessors, (805), 0 states have call successors, (0), 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 07:10:21,461 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 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 07:10:21,462 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 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 07:10:21,462 INFO L175 Difference]: Start difference. First operand has 58 places, 62 transitions, 287 flow. Second operand 6 states and 805 transitions. [2023-08-27 07:10:21,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 122 transitions, 665 flow [2023-08-27 07:10:21,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 122 transitions, 631 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:21,480 INFO L231 Difference]: Finished difference. Result has 56 places, 58 transitions, 255 flow [2023-08-27 07:10:21,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=255, PETRI_PLACES=56, PETRI_TRANSITIONS=58} [2023-08-27 07:10:21,481 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -7 predicate places. [2023-08-27 07:10:21,481 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 58 transitions, 255 flow [2023-08-27 07:10:21,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 121.33333333333333) internal successors, (728), 6 states have internal predecessors, (728), 0 states have call successors, (0), 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 07:10:21,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:21,482 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:21,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 07:10:21,482 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:21,482 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:21,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1755169302, now seen corresponding path program 1 times [2023-08-27 07:10:21,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:21,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837876962] [2023-08-27 07:10:21,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:21,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:21,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:21,743 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 07:10:21,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:21,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837876962] [2023-08-27 07:10:21,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837876962] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:21,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:21,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:10:21,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486072104] [2023-08-27 07:10:21,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:21,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:21,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:21,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:21,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:21,745 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:21,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 58 transitions, 255 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 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 07:10:21,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:21,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:21,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:22,239 INFO L124 PetriNetUnfolderBase]: 3724/6079 cut-off events. [2023-08-27 07:10:22,239 INFO L125 PetriNetUnfolderBase]: For 7858/7858 co-relation queries the response was YES. [2023-08-27 07:10:22,250 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16539 conditions, 6079 events. 3724/6079 cut-off events. For 7858/7858 co-relation queries the response was YES. Maximal size of possible extension queue 318. Compared 38152 event pairs, 715 based on Foata normal form. 164/6225 useless extension candidates. Maximal degree in co-relation 16526. Up to 2180 conditions per place. [2023-08-27 07:10:22,269 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 95 selfloop transitions, 57 changer transitions 0/157 dead transitions. [2023-08-27 07:10:22,270 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 157 transitions, 981 flow [2023-08-27 07:10:22,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:22,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:22,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 666 transitions. [2023-08-27 07:10:22,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083969465648855 [2023-08-27 07:10:22,272 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 666 transitions. [2023-08-27 07:10:22,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 666 transitions. [2023-08-27 07:10:22,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:22,273 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 666 transitions. [2023-08-27 07:10:22,274 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 133.2) internal successors, (666), 5 states have internal predecessors, (666), 0 states have call successors, (0), 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 07:10:22,276 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:22,277 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:22,277 INFO L175 Difference]: Start difference. First operand has 56 places, 58 transitions, 255 flow. Second operand 5 states and 666 transitions. [2023-08-27 07:10:22,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 157 transitions, 981 flow [2023-08-27 07:10:22,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 157 transitions, 792 flow, removed 36 selfloop flow, removed 7 redundant places. [2023-08-27 07:10:22,299 INFO L231 Difference]: Finished difference. Result has 55 places, 101 transitions, 563 flow [2023-08-27 07:10:22,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=563, PETRI_PLACES=55, PETRI_TRANSITIONS=101} [2023-08-27 07:10:22,300 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -8 predicate places. [2023-08-27 07:10:22,300 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 101 transitions, 563 flow [2023-08-27 07:10:22,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 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 07:10:22,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:22,301 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:22,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 07:10:22,301 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:22,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:22,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1298576594, now seen corresponding path program 2 times [2023-08-27 07:10:22,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:22,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998206540] [2023-08-27 07:10:22,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:22,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:22,502 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 07:10:22,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:22,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998206540] [2023-08-27 07:10:22,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998206540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:22,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:22,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:10:22,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649433404] [2023-08-27 07:10:22,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:22,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:10:22,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:22,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:10:22,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:10:22,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:22,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 101 transitions, 563 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:22,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:22,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:22,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:23,304 INFO L124 PetriNetUnfolderBase]: 4579/8038 cut-off events. [2023-08-27 07:10:23,304 INFO L125 PetriNetUnfolderBase]: For 10782/11032 co-relation queries the response was YES. [2023-08-27 07:10:23,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22885 conditions, 8038 events. 4579/8038 cut-off events. For 10782/11032 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 58501 event pairs, 512 based on Foata normal form. 502/8502 useless extension candidates. Maximal degree in co-relation 22873. Up to 2564 conditions per place. [2023-08-27 07:10:23,338 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 116 selfloop transitions, 152 changer transitions 0/273 dead transitions. [2023-08-27 07:10:23,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 273 transitions, 1906 flow [2023-08-27 07:10:23,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:23,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:23,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1059 transitions. [2023-08-27 07:10:23,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5052480916030534 [2023-08-27 07:10:23,344 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1059 transitions. [2023-08-27 07:10:23,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1059 transitions. [2023-08-27 07:10:23,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:23,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1059 transitions. [2023-08-27 07:10:23,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 132.375) internal successors, (1059), 8 states have internal predecessors, (1059), 0 states have call successors, (0), 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 07:10:23,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:23,350 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:23,350 INFO L175 Difference]: Start difference. First operand has 55 places, 101 transitions, 563 flow. Second operand 8 states and 1059 transitions. [2023-08-27 07:10:23,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 273 transitions, 1906 flow [2023-08-27 07:10:23,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 273 transitions, 1906 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 07:10:23,359 INFO L231 Difference]: Finished difference. Result has 67 places, 189 transitions, 1722 flow [2023-08-27 07:10:23,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=563, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1722, PETRI_PLACES=67, PETRI_TRANSITIONS=189} [2023-08-27 07:10:23,360 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 4 predicate places. [2023-08-27 07:10:23,360 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 189 transitions, 1722 flow [2023-08-27 07:10:23,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:23,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:23,361 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:23,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 07:10:23,361 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:23,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:23,361 INFO L85 PathProgramCache]: Analyzing trace with hash 506857082, now seen corresponding path program 3 times [2023-08-27 07:10:23,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:23,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730925759] [2023-08-27 07:10:23,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:23,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:23,550 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 07:10:23,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:23,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730925759] [2023-08-27 07:10:23,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730925759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:23,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:23,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:10:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429330622] [2023-08-27 07:10:23,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:23,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:10:23,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:23,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:10:23,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:10:23,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:23,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 189 transitions, 1722 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:23,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:23,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:23,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:24,345 INFO L124 PetriNetUnfolderBase]: 4680/8333 cut-off events. [2023-08-27 07:10:24,345 INFO L125 PetriNetUnfolderBase]: For 30149/30713 co-relation queries the response was YES. [2023-08-27 07:10:24,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30902 conditions, 8333 events. 4680/8333 cut-off events. For 30149/30713 co-relation queries the response was YES. Maximal size of possible extension queue 427. Compared 61856 event pairs, 427 based on Foata normal form. 276/8581 useless extension candidates. Maximal degree in co-relation 30883. Up to 2528 conditions per place. [2023-08-27 07:10:24,389 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 92 selfloop transitions, 223 changer transitions 0/320 dead transitions. [2023-08-27 07:10:24,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 320 transitions, 3170 flow [2023-08-27 07:10:24,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:24,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1044 transitions. [2023-08-27 07:10:24,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49809160305343514 [2023-08-27 07:10:24,393 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1044 transitions. [2023-08-27 07:10:24,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1044 transitions. [2023-08-27 07:10:24,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:24,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1044 transitions. [2023-08-27 07:10:24,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.5) internal successors, (1044), 8 states have internal predecessors, (1044), 0 states have call successors, (0), 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 07:10:24,399 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:24,399 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:24,399 INFO L175 Difference]: Start difference. First operand has 67 places, 189 transitions, 1722 flow. Second operand 8 states and 1044 transitions. [2023-08-27 07:10:24,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 320 transitions, 3170 flow [2023-08-27 07:10:24,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 320 transitions, 3152 flow, removed 9 selfloop flow, removed 0 redundant places. [2023-08-27 07:10:24,437 INFO L231 Difference]: Finished difference. Result has 76 places, 253 transitions, 2934 flow [2023-08-27 07:10:24,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1712, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=163, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2934, PETRI_PLACES=76, PETRI_TRANSITIONS=253} [2023-08-27 07:10:24,438 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 13 predicate places. [2023-08-27 07:10:24,438 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 253 transitions, 2934 flow [2023-08-27 07:10:24,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:24,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:24,438 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:24,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 07:10:24,439 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:24,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:24,439 INFO L85 PathProgramCache]: Analyzing trace with hash 1828387914, now seen corresponding path program 4 times [2023-08-27 07:10:24,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:24,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115738924] [2023-08-27 07:10:24,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:24,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:24,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:24,865 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 07:10:24,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:24,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115738924] [2023-08-27 07:10:24,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115738924] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:24,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:24,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:10:24,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339692078] [2023-08-27 07:10:24,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:24,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 07:10:24,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:24,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 07:10:24,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 07:10:24,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 262 [2023-08-27 07:10:24,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 253 transitions, 2934 flow. Second operand has 6 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 0 states have call successors, (0), 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 07:10:24,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:24,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 262 [2023-08-27 07:10:24,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:27,003 INFO L124 PetriNetUnfolderBase]: 16031/24466 cut-off events. [2023-08-27 07:10:27,003 INFO L125 PetriNetUnfolderBase]: For 123281/123281 co-relation queries the response was YES. [2023-08-27 07:10:27,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101080 conditions, 24466 events. 16031/24466 cut-off events. For 123281/123281 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 163109 event pairs, 4246 based on Foata normal form. 4/24470 useless extension candidates. Maximal degree in co-relation 101057. Up to 12311 conditions per place. [2023-08-27 07:10:27,136 INFO L140 encePairwiseOnDemand]: 255/262 looper letters, 413 selfloop transitions, 12 changer transitions 175/600 dead transitions. [2023-08-27 07:10:27,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 600 transitions, 7926 flow [2023-08-27 07:10:27,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 07:10:27,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 07:10:27,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 775 transitions. [2023-08-27 07:10:27,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49300254452926207 [2023-08-27 07:10:27,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 775 transitions. [2023-08-27 07:10:27,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 775 transitions. [2023-08-27 07:10:27,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:27,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 775 transitions. [2023-08-27 07:10:27,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 129.16666666666666) internal successors, (775), 6 states have internal predecessors, (775), 0 states have call successors, (0), 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 07:10:27,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 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 07:10:27,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 262.0) internal successors, (1834), 7 states have internal predecessors, (1834), 0 states have call successors, (0), 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 07:10:27,145 INFO L175 Difference]: Start difference. First operand has 76 places, 253 transitions, 2934 flow. Second operand 6 states and 775 transitions. [2023-08-27 07:10:27,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 600 transitions, 7926 flow [2023-08-27 07:10:27,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 600 transitions, 7781 flow, removed 68 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:27,418 INFO L231 Difference]: Finished difference. Result has 83 places, 238 transitions, 2611 flow [2023-08-27 07:10:27,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2883, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2611, PETRI_PLACES=83, PETRI_TRANSITIONS=238} [2023-08-27 07:10:27,418 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 20 predicate places. [2023-08-27 07:10:27,418 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 238 transitions, 2611 flow [2023-08-27 07:10:27,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 115.66666666666667) internal successors, (694), 6 states have internal predecessors, (694), 0 states have call successors, (0), 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 07:10:27,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:27,419 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:27,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 07:10:27,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:27,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:27,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1731738668, now seen corresponding path program 5 times [2023-08-27 07:10:27,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:27,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644793585] [2023-08-27 07:10:27,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:27,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:27,589 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 07:10:27,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:27,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644793585] [2023-08-27 07:10:27,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644793585] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:27,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:27,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:10:27,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993855409] [2023-08-27 07:10:27,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:27,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:10:27,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:27,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:10:27,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:10:27,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:27,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 238 transitions, 2611 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:27,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:27,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:27,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:28,448 INFO L124 PetriNetUnfolderBase]: 4485/8273 cut-off events. [2023-08-27 07:10:28,449 INFO L125 PetriNetUnfolderBase]: For 44920/45970 co-relation queries the response was YES. [2023-08-27 07:10:28,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37006 conditions, 8273 events. 4485/8273 cut-off events. For 44920/45970 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 64330 event pairs, 475 based on Foata normal form. 802/8924 useless extension candidates. Maximal degree in co-relation 36979. Up to 2516 conditions per place. [2023-08-27 07:10:28,515 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 85 selfloop transitions, 228 changer transitions 7/338 dead transitions. [2023-08-27 07:10:28,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 338 transitions, 3929 flow [2023-08-27 07:10:28,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:28,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:28,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-08-27 07:10:28,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666030534351147 [2023-08-27 07:10:28,519 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-08-27 07:10:28,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-08-27 07:10:28,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:28,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-08-27 07:10:28,522 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 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 07:10:28,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:28,526 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:28,526 INFO L175 Difference]: Start difference. First operand has 83 places, 238 transitions, 2611 flow. Second operand 8 states and 1041 transitions. [2023-08-27 07:10:28,526 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 338 transitions, 3929 flow [2023-08-27 07:10:28,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 338 transitions, 3921 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 07:10:28,628 INFO L231 Difference]: Finished difference. Result has 91 places, 270 transitions, 3541 flow [2023-08-27 07:10:28,628 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=2592, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=192, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3541, PETRI_PLACES=91, PETRI_TRANSITIONS=270} [2023-08-27 07:10:28,629 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 28 predicate places. [2023-08-27 07:10:28,629 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 270 transitions, 3541 flow [2023-08-27 07:10:28,629 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:28,629 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:28,630 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:28,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 07:10:28,630 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:28,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 199188454, now seen corresponding path program 6 times [2023-08-27 07:10:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:28,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798162363] [2023-08-27 07:10:28,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:28,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:28,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:28,810 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 07:10:28,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:28,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798162363] [2023-08-27 07:10:28,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798162363] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:28,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:28,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 07:10:28,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154606398] [2023-08-27 07:10:28,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:28,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 07:10:28,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:28,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 07:10:28,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:10:28,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:28,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 270 transitions, 3541 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:10:28,814 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:28,814 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:28,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:29,914 INFO L124 PetriNetUnfolderBase]: 4491/8257 cut-off events. [2023-08-27 07:10:29,915 INFO L125 PetriNetUnfolderBase]: For 60269/61781 co-relation queries the response was YES. [2023-08-27 07:10:29,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41064 conditions, 8257 events. 4491/8257 cut-off events. For 60269/61781 co-relation queries the response was YES. Maximal size of possible extension queue 489. Compared 64057 event pairs, 535 based on Foata normal form. 706/8815 useless extension candidates. Maximal degree in co-relation 41034. Up to 2738 conditions per place. [2023-08-27 07:10:29,998 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 89 selfloop transitions, 249 changer transitions 1/357 dead transitions. [2023-08-27 07:10:29,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 357 transitions, 4812 flow [2023-08-27 07:10:29,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:10:29,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:10:30,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1154 transitions. [2023-08-27 07:10:30,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4893977947413062 [2023-08-27 07:10:30,002 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1154 transitions. [2023-08-27 07:10:30,002 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1154 transitions. [2023-08-27 07:10:30,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:30,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1154 transitions. [2023-08-27 07:10:30,005 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.22222222222223) internal successors, (1154), 9 states have internal predecessors, (1154), 0 states have call successors, (0), 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 07:10:30,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 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 07:10:30,008 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 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 07:10:30,008 INFO L175 Difference]: Start difference. First operand has 91 places, 270 transitions, 3541 flow. Second operand 9 states and 1154 transitions. [2023-08-27 07:10:30,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 357 transitions, 4812 flow [2023-08-27 07:10:30,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 357 transitions, 4591 flow, removed 4 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:30,141 INFO L231 Difference]: Finished difference. Result has 97 places, 291 transitions, 4177 flow [2023-08-27 07:10:30,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3325, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=228, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4177, PETRI_PLACES=97, PETRI_TRANSITIONS=291} [2023-08-27 07:10:30,141 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 34 predicate places. [2023-08-27 07:10:30,142 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 291 transitions, 4177 flow [2023-08-27 07:10:30,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:10:30,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:30,142 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:30,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 07:10:30,143 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:30,143 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:30,143 INFO L85 PathProgramCache]: Analyzing trace with hash -378146148, now seen corresponding path program 7 times [2023-08-27 07:10:30,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:30,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142285949] [2023-08-27 07:10:30,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:30,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:30,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:30,422 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 07:10:30,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:30,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142285949] [2023-08-27 07:10:30,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142285949] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:30,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:30,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 07:10:30,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70475607] [2023-08-27 07:10:30,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:30,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 07:10:30,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:30,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 07:10:30,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 07:10:30,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:30,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 291 transitions, 4177 flow. Second operand has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 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 07:10:30,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:30,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:30,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:30,982 INFO L124 PetriNetUnfolderBase]: 2636/5313 cut-off events. [2023-08-27 07:10:30,982 INFO L125 PetriNetUnfolderBase]: For 46351/46967 co-relation queries the response was YES. [2023-08-27 07:10:30,996 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27084 conditions, 5313 events. 2636/5313 cut-off events. For 46351/46967 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 40686 event pairs, 589 based on Foata normal form. 536/5767 useless extension candidates. Maximal degree in co-relation 27053. Up to 1586 conditions per place. [2023-08-27 07:10:31,010 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 127 selfloop transitions, 146 changer transitions 27/314 dead transitions. [2023-08-27 07:10:31,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 314 transitions, 4723 flow [2023-08-27 07:10:31,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 07:10:31,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 07:10:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 656 transitions. [2023-08-27 07:10:31,012 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.500763358778626 [2023-08-27 07:10:31,012 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 656 transitions. [2023-08-27 07:10:31,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 656 transitions. [2023-08-27 07:10:31,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:31,013 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 656 transitions. [2023-08-27 07:10:31,014 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 131.2) internal successors, (656), 5 states have internal predecessors, (656), 0 states have call successors, (0), 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 07:10:31,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:31,016 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 262.0) internal successors, (1572), 6 states have internal predecessors, (1572), 0 states have call successors, (0), 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 07:10:31,016 INFO L175 Difference]: Start difference. First operand has 97 places, 291 transitions, 4177 flow. Second operand 5 states and 656 transitions. [2023-08-27 07:10:31,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 314 transitions, 4723 flow [2023-08-27 07:10:31,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 314 transitions, 4512 flow, removed 1 selfloop flow, removed 4 redundant places. [2023-08-27 07:10:31,070 INFO L231 Difference]: Finished difference. Result has 98 places, 249 transitions, 3750 flow [2023-08-27 07:10:31,070 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=3750, PETRI_PLACES=98, PETRI_TRANSITIONS=249} [2023-08-27 07:10:31,071 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 35 predicate places. [2023-08-27 07:10:31,071 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 249 transitions, 3750 flow [2023-08-27 07:10:31,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 119.8) internal successors, (599), 5 states have internal predecessors, (599), 0 states have call successors, (0), 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 07:10:31,071 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:31,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:31,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 07:10:31,072 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:31,072 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:31,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1666904420, now seen corresponding path program 8 times [2023-08-27 07:10:31,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:31,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455062733] [2023-08-27 07:10:31,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:31,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:31,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:31,269 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 07:10:31,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:31,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455062733] [2023-08-27 07:10:31,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [455062733] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:31,269 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:31,269 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:10:31,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897285406] [2023-08-27 07:10:31,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:31,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:10:31,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:10:31,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:10:31,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:31,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 249 transitions, 3750 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:31,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:31,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:31,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:31,997 INFO L124 PetriNetUnfolderBase]: 2463/4967 cut-off events. [2023-08-27 07:10:31,997 INFO L125 PetriNetUnfolderBase]: For 47872/48861 co-relation queries the response was YES. [2023-08-27 07:10:32,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26558 conditions, 4967 events. 2463/4967 cut-off events. For 47872/48861 co-relation queries the response was YES. Maximal size of possible extension queue 278. Compared 37543 event pairs, 278 based on Foata normal form. 473/5332 useless extension candidates. Maximal degree in co-relation 26526. Up to 1359 conditions per place. [2023-08-27 07:10:32,033 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 113 selfloop transitions, 198 changer transitions 9/334 dead transitions. [2023-08-27 07:10:32,033 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 334 transitions, 4986 flow [2023-08-27 07:10:32,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:32,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:32,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1047 transitions. [2023-08-27 07:10:32,036 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49952290076335876 [2023-08-27 07:10:32,036 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1047 transitions. [2023-08-27 07:10:32,036 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1047 transitions. [2023-08-27 07:10:32,036 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:32,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1047 transitions. [2023-08-27 07:10:32,038 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.875) internal successors, (1047), 8 states have internal predecessors, (1047), 0 states have call successors, (0), 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 07:10:32,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:32,040 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:32,040 INFO L175 Difference]: Start difference. First operand has 98 places, 249 transitions, 3750 flow. Second operand 8 states and 1047 transitions. [2023-08-27 07:10:32,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 334 transitions, 4986 flow [2023-08-27 07:10:32,102 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 334 transitions, 4800 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 07:10:32,108 INFO L231 Difference]: Finished difference. Result has 105 places, 259 transitions, 4202 flow [2023-08-27 07:10:32,108 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3585, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=184, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=4202, PETRI_PLACES=105, PETRI_TRANSITIONS=259} [2023-08-27 07:10:32,109 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 42 predicate places. [2023-08-27 07:10:32,109 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 259 transitions, 4202 flow [2023-08-27 07:10:32,109 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:32,109 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:32,109 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:32,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 07:10:32,110 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:32,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:32,110 INFO L85 PathProgramCache]: Analyzing trace with hash -528857634, now seen corresponding path program 9 times [2023-08-27 07:10:32,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:32,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075480436] [2023-08-27 07:10:32,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:32,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:32,304 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 07:10:32,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:32,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075480436] [2023-08-27 07:10:32,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075480436] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:32,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:32,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:10:32,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908393870] [2023-08-27 07:10:32,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:32,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:10:32,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:32,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:10:32,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:10:32,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:32,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 259 transitions, 4202 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:32,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:32,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:32,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:32,846 INFO L124 PetriNetUnfolderBase]: 1722/3631 cut-off events. [2023-08-27 07:10:32,846 INFO L125 PetriNetUnfolderBase]: For 36414/37274 co-relation queries the response was YES. [2023-08-27 07:10:32,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20646 conditions, 3631 events. 1722/3631 cut-off events. For 36414/37274 co-relation queries the response was YES. Maximal size of possible extension queue 239. Compared 26692 event pairs, 180 based on Foata normal form. 532/4123 useless extension candidates. Maximal degree in co-relation 20612. Up to 900 conditions per place. [2023-08-27 07:10:32,864 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 102 selfloop transitions, 170 changer transitions 59/344 dead transitions. [2023-08-27 07:10:32,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 344 transitions, 5678 flow [2023-08-27 07:10:32,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:32,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:32,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1041 transitions. [2023-08-27 07:10:32,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49666030534351147 [2023-08-27 07:10:32,867 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1041 transitions. [2023-08-27 07:10:32,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1041 transitions. [2023-08-27 07:10:32,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:32,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1041 transitions. [2023-08-27 07:10:32,869 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 130.125) internal successors, (1041), 8 states have internal predecessors, (1041), 0 states have call successors, (0), 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 07:10:32,871 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:32,872 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:32,872 INFO L175 Difference]: Start difference. First operand has 105 places, 259 transitions, 4202 flow. Second operand 8 states and 1041 transitions. [2023-08-27 07:10:32,872 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 344 transitions, 5678 flow [2023-08-27 07:10:32,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 344 transitions, 5565 flow, removed 7 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:32,932 INFO L231 Difference]: Finished difference. Result has 111 places, 225 transitions, 3956 flow [2023-08-27 07:10:32,932 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3927, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3956, PETRI_PLACES=111, PETRI_TRANSITIONS=225} [2023-08-27 07:10:32,933 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 48 predicate places. [2023-08-27 07:10:32,933 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 225 transitions, 3956 flow [2023-08-27 07:10:32,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:32,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:32,933 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:32,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 07:10:32,933 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:32,934 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:32,934 INFO L85 PathProgramCache]: Analyzing trace with hash -100376462, now seen corresponding path program 10 times [2023-08-27 07:10:32,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:32,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [667219489] [2023-08-27 07:10:32,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:32,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:32,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:33,097 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 07:10:33,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:33,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [667219489] [2023-08-27 07:10:33,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [667219489] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:33,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:33,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 07:10:33,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013433757] [2023-08-27 07:10:33,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:33,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 07:10:33,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:33,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 07:10:33,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:10:33,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:33,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 225 transitions, 3956 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:10:33,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:33,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:33,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:33,662 INFO L124 PetriNetUnfolderBase]: 1367/2932 cut-off events. [2023-08-27 07:10:33,662 INFO L125 PetriNetUnfolderBase]: For 33931/34405 co-relation queries the response was YES. [2023-08-27 07:10:33,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17016 conditions, 2932 events. 1367/2932 cut-off events. For 33931/34405 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 20832 event pairs, 136 based on Foata normal form. 274/3158 useless extension candidates. Maximal degree in co-relation 16981. Up to 744 conditions per place. [2023-08-27 07:10:33,683 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 81 selfloop transitions, 170 changer transitions 31/295 dead transitions. [2023-08-27 07:10:33,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 295 transitions, 5002 flow [2023-08-27 07:10:33,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:10:33,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:10:33,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1152 transitions. [2023-08-27 07:10:33,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48854961832061067 [2023-08-27 07:10:33,686 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1152 transitions. [2023-08-27 07:10:33,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1152 transitions. [2023-08-27 07:10:33,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:33,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1152 transitions. [2023-08-27 07:10:33,689 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 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 07:10:33,691 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 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 07:10:33,692 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 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 07:10:33,692 INFO L175 Difference]: Start difference. First operand has 111 places, 225 transitions, 3956 flow. Second operand 9 states and 1152 transitions. [2023-08-27 07:10:33,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 295 transitions, 5002 flow [2023-08-27 07:10:33,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 295 transitions, 4842 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 07:10:33,743 INFO L231 Difference]: Finished difference. Result has 117 places, 207 transitions, 3782 flow [2023-08-27 07:10:33,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3803, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=168, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3782, PETRI_PLACES=117, PETRI_TRANSITIONS=207} [2023-08-27 07:10:33,743 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 54 predicate places. [2023-08-27 07:10:33,744 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 207 transitions, 3782 flow [2023-08-27 07:10:33,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:10:33,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:33,744 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:33,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 07:10:33,745 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:33,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:33,745 INFO L85 PathProgramCache]: Analyzing trace with hash 312242054, now seen corresponding path program 11 times [2023-08-27 07:10:33,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:33,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280817774] [2023-08-27 07:10:33,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:33,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:33,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:33,932 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 07:10:33,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:33,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280817774] [2023-08-27 07:10:33,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280817774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:33,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:33,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 07:10:33,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940959332] [2023-08-27 07:10:33,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:33,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 07:10:33,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:33,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 07:10:33,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:10:33,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:33,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 207 transitions, 3782 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:33,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:33,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:33,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:34,528 INFO L124 PetriNetUnfolderBase]: 1228/2679 cut-off events. [2023-08-27 07:10:34,529 INFO L125 PetriNetUnfolderBase]: For 35091/35467 co-relation queries the response was YES. [2023-08-27 07:10:34,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15872 conditions, 2679 events. 1228/2679 cut-off events. For 35091/35467 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 18740 event pairs, 133 based on Foata normal form. 226/2862 useless extension candidates. Maximal degree in co-relation 15837. Up to 679 conditions per place. [2023-08-27 07:10:34,668 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 90 selfloop transitions, 164 changer transitions 17/284 dead transitions. [2023-08-27 07:10:34,668 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 284 transitions, 4785 flow [2023-08-27 07:10:34,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:10:34,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:10:34,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1514 transitions. [2023-08-27 07:10:34,670 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815521628498728 [2023-08-27 07:10:34,670 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1514 transitions. [2023-08-27 07:10:34,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1514 transitions. [2023-08-27 07:10:34,670 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:34,670 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1514 transitions. [2023-08-27 07:10:34,672 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.16666666666667) internal successors, (1514), 12 states have internal predecessors, (1514), 0 states have call successors, (0), 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 07:10:34,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 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 07:10:34,676 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 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 07:10:34,676 INFO L175 Difference]: Start difference. First operand has 117 places, 207 transitions, 3782 flow. Second operand 12 states and 1514 transitions. [2023-08-27 07:10:34,676 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 284 transitions, 4785 flow [2023-08-27 07:10:34,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 284 transitions, 4562 flow, removed 14 selfloop flow, removed 5 redundant places. [2023-08-27 07:10:34,724 INFO L231 Difference]: Finished difference. Result has 125 places, 201 transitions, 3769 flow [2023-08-27 07:10:34,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=160, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3769, PETRI_PLACES=125, PETRI_TRANSITIONS=201} [2023-08-27 07:10:34,725 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 62 predicate places. [2023-08-27 07:10:34,725 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 201 transitions, 3769 flow [2023-08-27 07:10:34,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:34,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:34,725 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:34,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 07:10:34,725 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:34,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:34,726 INFO L85 PathProgramCache]: Analyzing trace with hash -177051734, now seen corresponding path program 12 times [2023-08-27 07:10:34,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:34,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423698952] [2023-08-27 07:10:34,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:34,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:34,900 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 07:10:34,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:34,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423698952] [2023-08-27 07:10:34,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423698952] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:34,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:34,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 07:10:34,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630985954] [2023-08-27 07:10:34,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:34,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 07:10:34,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:34,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 07:10:34,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:10:34,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:34,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 201 transitions, 3769 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:34,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:34,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:34,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:35,495 INFO L124 PetriNetUnfolderBase]: 1227/2691 cut-off events. [2023-08-27 07:10:35,495 INFO L125 PetriNetUnfolderBase]: For 40994/41476 co-relation queries the response was YES. [2023-08-27 07:10:35,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16319 conditions, 2691 events. 1227/2691 cut-off events. For 40994/41476 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 18993 event pairs, 144 based on Foata normal form. 266/2910 useless extension candidates. Maximal degree in co-relation 16283. Up to 683 conditions per place. [2023-08-27 07:10:35,509 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 75 selfloop transitions, 153 changer transitions 44/285 dead transitions. [2023-08-27 07:10:35,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 285 transitions, 4983 flow [2023-08-27 07:10:35,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:10:35,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:10:35,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1513 transitions. [2023-08-27 07:10:35,511 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.481234096692112 [2023-08-27 07:10:35,511 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1513 transitions. [2023-08-27 07:10:35,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1513 transitions. [2023-08-27 07:10:35,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:35,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1513 transitions. [2023-08-27 07:10:35,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.08333333333333) internal successors, (1513), 12 states have internal predecessors, (1513), 0 states have call successors, (0), 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 07:10:35,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 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 07:10:35,515 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 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 07:10:35,515 INFO L175 Difference]: Start difference. First operand has 125 places, 201 transitions, 3769 flow. Second operand 12 states and 1513 transitions. [2023-08-27 07:10:35,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 285 transitions, 4983 flow [2023-08-27 07:10:35,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 285 transitions, 4594 flow, removed 12 selfloop flow, removed 9 redundant places. [2023-08-27 07:10:35,553 INFO L231 Difference]: Finished difference. Result has 128 places, 189 transitions, 3496 flow [2023-08-27 07:10:35,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=153, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3496, PETRI_PLACES=128, PETRI_TRANSITIONS=189} [2023-08-27 07:10:35,554 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 65 predicate places. [2023-08-27 07:10:35,554 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 189 transitions, 3496 flow [2023-08-27 07:10:35,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:35,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:35,554 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:35,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 07:10:35,555 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:35,555 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:35,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1957289118, now seen corresponding path program 13 times [2023-08-27 07:10:35,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:35,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353992374] [2023-08-27 07:10:35,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:35,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:35,737 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 07:10:35,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:35,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353992374] [2023-08-27 07:10:35,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353992374] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:35,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:35,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 07:10:35,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796501683] [2023-08-27 07:10:35,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:35,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 07:10:35,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:35,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 07:10:35,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:10:35,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:35,741 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 189 transitions, 3496 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:35,741 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:35,741 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:35,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:36,261 INFO L124 PetriNetUnfolderBase]: 1143/2527 cut-off events. [2023-08-27 07:10:36,261 INFO L125 PetriNetUnfolderBase]: For 38375/38843 co-relation queries the response was YES. [2023-08-27 07:10:36,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15269 conditions, 2527 events. 1143/2527 cut-off events. For 38375/38843 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 17713 event pairs, 138 based on Foata normal form. 256/2739 useless extension candidates. Maximal degree in co-relation 15233. Up to 680 conditions per place. [2023-08-27 07:10:36,275 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 82 selfloop transitions, 149 changer transitions 27/270 dead transitions. [2023-08-27 07:10:36,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 270 transitions, 4518 flow [2023-08-27 07:10:36,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 07:10:36,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 07:10:36,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1514 transitions. [2023-08-27 07:10:36,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4815521628498728 [2023-08-27 07:10:36,276 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1514 transitions. [2023-08-27 07:10:36,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1514 transitions. [2023-08-27 07:10:36,277 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:36,277 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1514 transitions. [2023-08-27 07:10:36,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 126.16666666666667) internal successors, (1514), 12 states have internal predecessors, (1514), 0 states have call successors, (0), 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 07:10:36,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 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 07:10:36,280 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 262.0) internal successors, (3406), 13 states have internal predecessors, (3406), 0 states have call successors, (0), 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 07:10:36,280 INFO L175 Difference]: Start difference. First operand has 128 places, 189 transitions, 3496 flow. Second operand 12 states and 1514 transitions. [2023-08-27 07:10:36,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 270 transitions, 4518 flow [2023-08-27 07:10:36,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 270 transitions, 4180 flow, removed 9 selfloop flow, removed 9 redundant places. [2023-08-27 07:10:36,332 INFO L231 Difference]: Finished difference. Result has 129 places, 183 transitions, 3355 flow [2023-08-27 07:10:36,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=3188, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3355, PETRI_PLACES=129, PETRI_TRANSITIONS=183} [2023-08-27 07:10:36,332 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 66 predicate places. [2023-08-27 07:10:36,332 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 183 transitions, 3355 flow [2023-08-27 07:10:36,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:36,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:36,333 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:36,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-08-27 07:10:36,333 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:36,333 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:36,333 INFO L85 PathProgramCache]: Analyzing trace with hash -589712180, now seen corresponding path program 14 times [2023-08-27 07:10:36,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:36,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250633203] [2023-08-27 07:10:36,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:36,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:36,482 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 07:10:36,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:36,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250633203] [2023-08-27 07:10:36,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250633203] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:36,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:36,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 07:10:36,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010469367] [2023-08-27 07:10:36,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:36,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 07:10:36,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:36,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 07:10:36,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 07:10:36,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:36,486 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 183 transitions, 3355 flow. Second operand has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:36,486 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:36,486 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:36,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:36,736 INFO L124 PetriNetUnfolderBase]: 305/748 cut-off events. [2023-08-27 07:10:36,737 INFO L125 PetriNetUnfolderBase]: For 10594/10778 co-relation queries the response was YES. [2023-08-27 07:10:36,740 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5116 conditions, 748 events. 305/748 cut-off events. For 10594/10778 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4221 event pairs, 21 based on Foata normal form. 170/918 useless extension candidates. Maximal degree in co-relation 5079. Up to 183 conditions per place. [2023-08-27 07:10:36,741 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 44 selfloop transitions, 26 changer transitions 56/134 dead transitions. [2023-08-27 07:10:36,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 134 transitions, 2236 flow [2023-08-27 07:10:36,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:36,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:36,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1000 transitions. [2023-08-27 07:10:36,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4770992366412214 [2023-08-27 07:10:36,743 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1000 transitions. [2023-08-27 07:10:36,743 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1000 transitions. [2023-08-27 07:10:36,743 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:36,744 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1000 transitions. [2023-08-27 07:10:36,745 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 125.0) internal successors, (1000), 8 states have internal predecessors, (1000), 0 states have call successors, (0), 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 07:10:36,746 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:36,746 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:36,747 INFO L175 Difference]: Start difference. First operand has 129 places, 183 transitions, 3355 flow. Second operand 8 states and 1000 transitions. [2023-08-27 07:10:36,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 134 transitions, 2236 flow [2023-08-27 07:10:36,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 134 transitions, 1936 flow, removed 14 selfloop flow, removed 15 redundant places. [2023-08-27 07:10:36,765 INFO L231 Difference]: Finished difference. Result has 121 places, 58 transitions, 660 flow [2023-08-27 07:10:36,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=1484, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=660, PETRI_PLACES=121, PETRI_TRANSITIONS=58} [2023-08-27 07:10:36,766 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 58 predicate places. [2023-08-27 07:10:36,766 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 58 transitions, 660 flow [2023-08-27 07:10:36,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.14285714285714) internal successors, (827), 7 states have internal predecessors, (827), 0 states have call successors, (0), 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 07:10:36,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:36,767 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-08-27 07:10:36,767 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:36,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:36,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1287176328, now seen corresponding path program 15 times [2023-08-27 07:10:36,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:36,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690756425] [2023-08-27 07:10:36,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:36,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:36,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:36,916 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 07:10:36,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:36,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690756425] [2023-08-27 07:10:36,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690756425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:36,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:36,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 07:10:36,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371295206] [2023-08-27 07:10:36,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:36,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 07:10:36,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:36,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 07:10:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2023-08-27 07:10:36,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:36,920 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 58 transitions, 660 flow. Second operand has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:10:36,920 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:36,920 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:36,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:37,071 INFO L124 PetriNetUnfolderBase]: 79/218 cut-off events. [2023-08-27 07:10:37,072 INFO L125 PetriNetUnfolderBase]: For 2570/2584 co-relation queries the response was YES. [2023-08-27 07:10:37,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1279 conditions, 218 events. 79/218 cut-off events. For 2570/2584 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 720 event pairs, 6 based on Foata normal form. 20/238 useless extension candidates. Maximal degree in co-relation 1244. Up to 44 conditions per place. [2023-08-27 07:10:37,073 INFO L140 encePairwiseOnDemand]: 252/262 looper letters, 38 selfloop transitions, 16 changer transitions 10/72 dead transitions. [2023-08-27 07:10:37,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 72 transitions, 822 flow [2023-08-27 07:10:37,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 07:10:37,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 07:10:37,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 974 transitions. [2023-08-27 07:10:37,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46469465648854963 [2023-08-27 07:10:37,074 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 974 transitions. [2023-08-27 07:10:37,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 974 transitions. [2023-08-27 07:10:37,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:37,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 974 transitions. [2023-08-27 07:10:37,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 121.75) internal successors, (974), 8 states have internal predecessors, (974), 0 states have call successors, (0), 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 07:10:37,077 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:37,078 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 262.0) internal successors, (2358), 9 states have internal predecessors, (2358), 0 states have call successors, (0), 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 07:10:37,078 INFO L175 Difference]: Start difference. First operand has 121 places, 58 transitions, 660 flow. Second operand 8 states and 974 transitions. [2023-08-27 07:10:37,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 72 transitions, 822 flow [2023-08-27 07:10:37,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 72 transitions, 493 flow, removed 35 selfloop flow, removed 41 redundant places. [2023-08-27 07:10:37,083 INFO L231 Difference]: Finished difference. Result has 77 places, 44 transitions, 258 flow [2023-08-27 07:10:37,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=287, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=258, PETRI_PLACES=77, PETRI_TRANSITIONS=44} [2023-08-27 07:10:37,084 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 14 predicate places. [2023-08-27 07:10:37,084 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 44 transitions, 258 flow [2023-08-27 07:10:37,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 117.625) internal successors, (941), 8 states have internal predecessors, (941), 0 states have call successors, (0), 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 07:10:37,084 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 07:10:37,084 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:37,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2023-08-27 07:10:37,084 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 07:10:37,085 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 07:10:37,085 INFO L85 PathProgramCache]: Analyzing trace with hash 1420940912, now seen corresponding path program 16 times [2023-08-27 07:10:37,085 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 07:10:37,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170179476] [2023-08-27 07:10:37,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 07:10:37,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 07:10:37,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 07:10:37,235 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 07:10:37,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 07:10:37,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170179476] [2023-08-27 07:10:37,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [170179476] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 07:10:37,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 07:10:37,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-27 07:10:37,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115140123] [2023-08-27 07:10:37,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 07:10:37,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 07:10:37,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 07:10:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 07:10:37,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-08-27 07:10:37,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 262 [2023-08-27 07:10:37,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 44 transitions, 258 flow. Second operand has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:37,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 07:10:37,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 262 [2023-08-27 07:10:37,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 07:10:37,337 INFO L124 PetriNetUnfolderBase]: 40/109 cut-off events. [2023-08-27 07:10:37,337 INFO L125 PetriNetUnfolderBase]: For 274/274 co-relation queries the response was YES. [2023-08-27 07:10:37,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448 conditions, 109 events. 40/109 cut-off events. For 274/274 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 297 event pairs, 0 based on Foata normal form. 4/113 useless extension candidates. Maximal degree in co-relation 432. Up to 25 conditions per place. [2023-08-27 07:10:37,337 INFO L140 encePairwiseOnDemand]: 254/262 looper letters, 0 selfloop transitions, 0 changer transitions 44/44 dead transitions. [2023-08-27 07:10:37,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 44 transitions, 323 flow [2023-08-27 07:10:37,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 07:10:37,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 07:10:37,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1065 transitions. [2023-08-27 07:10:37,338 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45165394402035625 [2023-08-27 07:10:37,338 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1065 transitions. [2023-08-27 07:10:37,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1065 transitions. [2023-08-27 07:10:37,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 07:10:37,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1065 transitions. [2023-08-27 07:10:37,340 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 118.33333333333333) internal successors, (1065), 9 states have internal predecessors, (1065), 0 states have call successors, (0), 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 07:10:37,341 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 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 07:10:37,341 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 262.0) internal successors, (2620), 10 states have internal predecessors, (2620), 0 states have call successors, (0), 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 07:10:37,341 INFO L175 Difference]: Start difference. First operand has 77 places, 44 transitions, 258 flow. Second operand 9 states and 1065 transitions. [2023-08-27 07:10:37,341 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 44 transitions, 323 flow [2023-08-27 07:10:37,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 252 flow, removed 2 selfloop flow, removed 19 redundant places. [2023-08-27 07:10:37,342 INFO L231 Difference]: Finished difference. Result has 51 places, 0 transitions, 0 flow [2023-08-27 07:10:37,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=262, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=51, PETRI_TRANSITIONS=0} [2023-08-27 07:10:37,343 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, -12 predicate places. [2023-08-27 07:10:37,343 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 0 transitions, 0 flow [2023-08-27 07:10:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 117.22222222222223) internal successors, (1055), 9 states have internal predecessors, (1055), 0 states have call successors, (0), 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 07:10:37,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (36 of 37 remaining) [2023-08-27 07:10:37,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 37 remaining) [2023-08-27 07:10:37,345 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 37 remaining) [2023-08-27 07:10:37,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 37 remaining) [2023-08-27 07:10:37,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 37 remaining) [2023-08-27 07:10:37,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 37 remaining) [2023-08-27 07:10:37,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 37 remaining) [2023-08-27 07:10:37,346 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 37 remaining) [2023-08-27 07:10:37,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 37 remaining) [2023-08-27 07:10:37,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 37 remaining) [2023-08-27 07:10:37,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 37 remaining) [2023-08-27 07:10:37,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 37 remaining) [2023-08-27 07:10:37,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (24 of 37 remaining) [2023-08-27 07:10:37,347 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (23 of 37 remaining) [2023-08-27 07:10:37,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (22 of 37 remaining) [2023-08-27 07:10:37,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (21 of 37 remaining) [2023-08-27 07:10:37,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (20 of 37 remaining) [2023-08-27 07:10:37,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 37 remaining) [2023-08-27 07:10:37,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 37 remaining) [2023-08-27 07:10:37,348 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 37 remaining) [2023-08-27 07:10:37,349 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 37 remaining) [2023-08-27 07:10:37,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 37 remaining) [2023-08-27 07:10:37,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 37 remaining) [2023-08-27 07:10:37,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 37 remaining) [2023-08-27 07:10:37,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 37 remaining) [2023-08-27 07:10:37,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 37 remaining) [2023-08-27 07:10:37,350 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 37 remaining) [2023-08-27 07:10:37,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 37 remaining) [2023-08-27 07:10:37,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 37 remaining) [2023-08-27 07:10:37,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 37 remaining) [2023-08-27 07:10:37,351 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread4Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 37 remaining) [2023-08-27 07:10:37,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2023-08-27 07:10:37,351 INFO L445 BasicCegarLoop]: Path program histogram: [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 07:10:37,355 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 07:10:37,355 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 07:10:37,358 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 07:10:37 BasicIcfg [2023-08-27 07:10:37,358 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 07:10:37,359 INFO L158 Benchmark]: Toolchain (without parser) took 31775.32ms. Allocated memory was 337.6MB in the beginning and 6.4GB in the end (delta: 6.0GB). Free memory was 314.1MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-27 07:10:37,359 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 337.6MB. Free memory is still 315.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 07:10:37,359 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.51ms. Allocated memory is still 337.6MB. Free memory was 313.6MB in the beginning and 302.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 07:10:37,359 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.34ms. Allocated memory is still 337.6MB. Free memory was 302.2MB in the beginning and 300.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 07:10:37,359 INFO L158 Benchmark]: Boogie Preprocessor took 42.70ms. Allocated memory is still 337.6MB. Free memory was 299.7MB in the beginning and 298.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 07:10:37,360 INFO L158 Benchmark]: RCFGBuilder took 592.11ms. Allocated memory is still 337.6MB. Free memory was 298.6MB in the beginning and 268.2MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. [2023-08-27 07:10:37,360 INFO L158 Benchmark]: TraceAbstraction took 30873.53ms. Allocated memory was 337.6MB in the beginning and 6.4GB in the end (delta: 6.0GB). Free memory was 267.7MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. [2023-08-27 07:10:37,361 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 337.6MB. Free memory is still 315.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 225.51ms. Allocated memory is still 337.6MB. Free memory was 313.6MB in the beginning and 302.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 36.34ms. Allocated memory is still 337.6MB. Free memory was 302.2MB in the beginning and 300.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 42.70ms. Allocated memory is still 337.6MB. Free memory was 299.7MB in the beginning and 298.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 592.11ms. Allocated memory is still 337.6MB. Free memory was 298.6MB in the beginning and 268.2MB in the end (delta: 30.4MB). Peak memory consumption was 31.5MB. Max. memory is 16.0GB. * TraceAbstraction took 30873.53ms. Allocated memory was 337.6MB in the beginning and 6.4GB in the end (delta: 6.0GB). Free memory was 267.7MB in the beginning and 4.9GB in the end (delta: -4.6GB). Peak memory consumption was 1.4GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.5s, 154 PlacesBefore, 63 PlacesAfterwards, 143 TransitionsBefore, 50 TransitionsAfterwards, 2622 CoEnabledTransitionPairs, 8 FixpointIterations, 70 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 102 TotalNumberOfCompositions, 16377 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5062, independent: 4652, independent conditional: 0, independent unconditional: 4652, dependent: 410, dependent conditional: 0, dependent unconditional: 410, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1035, independent: 985, independent conditional: 0, independent unconditional: 985, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5062, independent: 3667, independent conditional: 0, independent unconditional: 3667, dependent: 360, dependent conditional: 0, dependent unconditional: 360, unknown: 1035, unknown conditional: 0, unknown unconditional: 1035] , Statistics on independence cache: Total cache size (in pairs): 296, Positive cache size: 273, Positive conditional cache size: 0, Positive unconditional cache size: 273, 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 - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 44]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 57]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 66]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 76]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 85]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 95]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 21]: assertion always holds For all program executions holds that assertion always holds at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 104]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 114]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 208 locations, 37 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: 30.7s, OverallIterations: 26, TraceHistogramMax: 1, PathProgramHistogramMax: 16, EmptinessCheckTime: 0.0s, AutomataDifference: 21.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1357 SdHoareTripleChecker+Valid, 3.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1357 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 2.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 445 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5376 IncrementalHoareTripleChecker+Invalid, 5821 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 445 mSolverCounterUnsat, 4 mSDtfsCounter, 5376 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 156 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=4202occurred in iteration=18, InterpolantAutomatonStates: 177, 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, 0.6s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 648 NumberOfCodeBlocks, 648 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 622 ConstructedInterpolants, 0 QuantifiedInterpolants, 1826 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 26 InterpolantComputations, 26 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 07:10:37,376 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...