/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 PROGRAM_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-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 13:41:59,338 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 13:41:59,421 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 13:41:59,424 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 13:41:59,425 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 13:41:59,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 13:41:59,450 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 13:41:59,450 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 13:41:59,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 13:41:59,455 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 13:41:59,455 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 13:41:59,455 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 13:41:59,455 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 13:41:59,456 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 13:41:59,456 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 13:41:59,457 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 13:41:59,457 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 13:41:59,457 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 13:41:59,457 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 13:41:59,457 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 13:41:59,458 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 13:41:59,458 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 13:41:59,458 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 13:41:59,459 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 13:41:59,459 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 13:41:59,459 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 13:41:59,460 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 13:41:59,460 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:41:59,460 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 13:41:59,460 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 13:41:59,461 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 13:41:59,461 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 13:41:59,462 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 13:41:59,462 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 13:41:59,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 13:41:59,462 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 13:41:59,769 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 13:41:59,790 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 13:41:59,792 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 13:41:59,793 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 13:41:59,794 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 13:41:59,795 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-27 13:42:00,985 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 13:42:01,201 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 13:42:01,202 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-ticket-3.wvr.c [2023-08-27 13:42:01,212 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5e0c6ece/aad29506821e4dd2abbdf35b143827d2/FLAGaec1c8cf2 [2023-08-27 13:42:01,227 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5e0c6ece/aad29506821e4dd2abbdf35b143827d2 [2023-08-27 13:42:01,231 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 13:42:01,232 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 13:42:01,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 13:42:01,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 13:42:01,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 13:42:01,240 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,241 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c9aec93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01, skipping insertion in model container [2023-08-27 13:42:01,241 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,266 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 13:42:01,422 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:42:01,430 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 13:42:01,449 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 13:42:01,456 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:42:01,456 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 13:42:01,462 INFO L206 MainTranslator]: Completed translation [2023-08-27 13:42:01,462 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01 WrapperNode [2023-08-27 13:42:01,462 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 13:42:01,463 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 13:42:01,463 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 13:42:01,463 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 13:42:01,468 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,474 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,495 INFO L138 Inliner]: procedures = 22, calls = 56, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 179 [2023-08-27 13:42:01,496 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 13:42:01,496 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 13:42:01,497 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 13:42:01,497 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 13:42:01,504 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,504 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,507 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,507 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,514 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,515 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,516 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,518 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 13:42:01,519 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 13:42:01,519 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 13:42:01,519 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 13:42:01,520 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (1/1) ... [2023-08-27 13:42:01,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 13:42:01,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 13:42:01,553 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 13:42:01,566 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 13:42:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 13:42:01,585 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 13:42:01,585 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 13:42:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 13:42:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 13:42:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 13:42:01,586 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 13:42:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 13:42:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 13:42:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 13:42:01,586 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 13:42:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 13:42:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 13:42:01,587 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 13:42:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 13:42:01,587 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 13:42:01,588 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 13:42:01,668 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 13:42:01,669 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 13:42:01,989 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 13:42:02,087 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 13:42:02,087 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 13:42:02,090 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:42:02 BoogieIcfgContainer [2023-08-27 13:42:02,090 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 13:42:02,093 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 13:42:02,093 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 13:42:02,096 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 13:42:02,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:42:01" (1/3) ... [2023-08-27 13:42:02,097 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72432a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:42:02, skipping insertion in model container [2023-08-27 13:42:02,097 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:42:01" (2/3) ... [2023-08-27 13:42:02,098 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72432a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:42:02, skipping insertion in model container [2023-08-27 13:42:02,098 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:42:02" (3/3) ... [2023-08-27 13:42:02,099 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-ticket-3.wvr.c [2023-08-27 13:42:02,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 13:42:02,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 13 error locations. [2023-08-27 13:42:02,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 13:42:02,220 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 13:42:02,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 140 places, 132 transitions, 288 flow [2023-08-27 13:42:02,342 INFO L124 PetriNetUnfolderBase]: 2/129 cut-off events. [2023-08-27 13:42:02,342 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:42:02,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 129 events. 2/129 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-08-27 13:42:02,350 INFO L82 GeneralOperation]: Start removeDead. Operand has 140 places, 132 transitions, 288 flow [2023-08-27 13:42:02,358 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 126 places, 118 transitions, 254 flow [2023-08-27 13:42:02,361 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 13:42:02,373 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 126 places, 118 transitions, 254 flow [2023-08-27 13:42:02,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 126 places, 118 transitions, 254 flow [2023-08-27 13:42:02,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 126 places, 118 transitions, 254 flow [2023-08-27 13:42:02,429 INFO L124 PetriNetUnfolderBase]: 2/118 cut-off events. [2023-08-27 13:42:02,429 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 13:42:02,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131 conditions, 118 events. 2/118 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 87 event pairs, 0 based on Foata normal form. 0/104 useless extension candidates. Maximal degree in co-relation 92. Up to 2 conditions per place. [2023-08-27 13:42:02,432 INFO L119 LiptonReduction]: Number of co-enabled transitions 1390 [2023-08-27 13:42:05,944 INFO L134 LiptonReduction]: Checked pairs total: 7707 [2023-08-27 13:42:05,944 INFO L136 LiptonReduction]: Total number of compositions: 85 [2023-08-27 13:42:05,956 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 13:42:05,962 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;@35aacc11, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 13:42:05,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 28 error locations. [2023-08-27 13:42:05,964 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 13:42:05,964 INFO L124 PetriNetUnfolderBase]: 0/2 cut-off events. [2023-08-27 13:42:05,965 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 13:42:05,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:05,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 13:42:05,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:05,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:05,970 INFO L85 PathProgramCache]: Analyzing trace with hash 533307, now seen corresponding path program 1 times [2023-08-27 13:42:05,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:05,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601141291] [2023-08-27 13:42:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:05,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:06,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:06,262 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 13:42:06,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:06,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601141291] [2023-08-27 13:42:06,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601141291] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:06,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:06,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:42:06,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238077544] [2023-08-27 13:42:06,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:06,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:42:06,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:06,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:42:06,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:42:06,293 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-27 13:42:06,295 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 38 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 13:42:06,295 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:06,295 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-27 13:42:06,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:06,712 INFO L124 PetriNetUnfolderBase]: 2487/3894 cut-off events. [2023-08-27 13:42:06,713 INFO L125 PetriNetUnfolderBase]: For 259/259 co-relation queries the response was YES. [2023-08-27 13:42:06,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 3894 events. 2487/3894 cut-off events. For 259/259 co-relation queries the response was YES. Maximal size of possible extension queue 358. Compared 24534 event pairs, 1732 based on Foata normal form. 0/2196 useless extension candidates. Maximal degree in co-relation 7684. Up to 3724 conditions per place. [2023-08-27 13:42:06,751 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 38 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-27 13:42:06,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 46 transitions, 200 flow [2023-08-27 13:42:06,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:42:06,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:42:06,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-27 13:42:06,770 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-27 13:42:06,771 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-27 13:42:06,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-27 13:42:06,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:06,777 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-27 13:42:06,782 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 13:42:06,786 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:42:06,787 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:42:06,789 INFO L175 Difference]: Start difference. First operand has 48 places, 38 transitions, 94 flow. Second operand 3 states and 345 transitions. [2023-08-27 13:42:06,790 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 46 transitions, 200 flow [2023-08-27 13:42:06,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 46 transitions, 184 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 13:42:06,798 INFO L231 Difference]: Finished difference. Result has 45 places, 41 transitions, 118 flow [2023-08-27 13:42:06,800 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=45, PETRI_TRANSITIONS=41} [2023-08-27 13:42:06,803 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -3 predicate places. [2023-08-27 13:42:06,803 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 41 transitions, 118 flow [2023-08-27 13:42:06,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.0) internal successors, (300), 3 states have internal predecessors, (300), 0 states have call successors, (0), 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 13:42:06,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:06,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:42:06,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 13:42:06,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:06,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:06,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1288365788, now seen corresponding path program 1 times [2023-08-27 13:42:06,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:06,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545955185] [2023-08-27 13:42:06,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:06,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:06,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:06,895 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 13:42:06,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:06,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545955185] [2023-08-27 13:42:06,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545955185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:06,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:06,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:42:06,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346110980] [2023-08-27 13:42:06,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:06,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:42:06,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:06,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:42:06,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:42:06,900 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-27 13:42:06,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 41 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:42:06,901 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:06,901 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-27 13:42:06,901 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:07,133 INFO L124 PetriNetUnfolderBase]: 1733/2749 cut-off events. [2023-08-27 13:42:07,133 INFO L125 PetriNetUnfolderBase]: For 307/307 co-relation queries the response was YES. [2023-08-27 13:42:07,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6095 conditions, 2749 events. 1733/2749 cut-off events. For 307/307 co-relation queries the response was YES. Maximal size of possible extension queue 247. Compared 16762 event pairs, 1613 based on Foata normal form. 0/1708 useless extension candidates. Maximal degree in co-relation 4421. Up to 2624 conditions per place. [2023-08-27 13:42:07,151 INFO L140 encePairwiseOnDemand]: 213/217 looper letters, 33 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 13:42:07,151 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 38 transitions, 174 flow [2023-08-27 13:42:07,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:42:07,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:42:07,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 331 transitions. [2023-08-27 13:42:07,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5084485407066052 [2023-08-27 13:42:07,154 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 331 transitions. [2023-08-27 13:42:07,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 331 transitions. [2023-08-27 13:42:07,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:07,156 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 331 transitions. [2023-08-27 13:42:07,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 110.33333333333333) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 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 13:42:07,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:42:07,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:42:07,160 INFO L175 Difference]: Start difference. First operand has 45 places, 41 transitions, 118 flow. Second operand 3 states and 331 transitions. [2023-08-27 13:42:07,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 38 transitions, 174 flow [2023-08-27 13:42:07,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 170 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:42:07,163 INFO L231 Difference]: Finished difference. Result has 43 places, 38 transitions, 104 flow [2023-08-27 13:42:07,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=104, PETRI_PLACES=43, PETRI_TRANSITIONS=38} [2023-08-27 13:42:07,164 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -5 predicate places. [2023-08-27 13:42:07,165 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 38 transitions, 104 flow [2023-08-27 13:42:07,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.0) internal successors, (303), 3 states have internal predecessors, (303), 0 states have call successors, (0), 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 13:42:07,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:07,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 13:42:07,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 13:42:07,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:07,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:07,175 INFO L85 PathProgramCache]: Analyzing trace with hash -1288397407, now seen corresponding path program 1 times [2023-08-27 13:42:07,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:07,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310165444] [2023-08-27 13:42:07,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:07,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:07,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:07,307 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 13:42:07,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:07,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310165444] [2023-08-27 13:42:07,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310165444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:07,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:07,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:42:07,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980207079] [2023-08-27 13:42:07,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:07,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:42:07,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:07,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:42:07,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:42:07,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-27 13:42:07,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 38 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 13:42:07,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:07,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-27 13:42:07,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:07,521 INFO L124 PetriNetUnfolderBase]: 1478/2375 cut-off events. [2023-08-27 13:42:07,521 INFO L125 PetriNetUnfolderBase]: For 266/266 co-relation queries the response was YES. [2023-08-27 13:42:07,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5117 conditions, 2375 events. 1478/2375 cut-off events. For 266/266 co-relation queries the response was YES. Maximal size of possible extension queue 238. Compared 14649 event pairs, 388 based on Foata normal form. 0/1515 useless extension candidates. Maximal degree in co-relation 5109. Up to 2140 conditions per place. [2023-08-27 13:42:07,535 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 52 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-08-27 13:42:07,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 63 transitions, 282 flow [2023-08-27 13:42:07,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:42:07,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:42:07,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 458 transitions. [2023-08-27 13:42:07,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276497695852534 [2023-08-27 13:42:07,538 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 458 transitions. [2023-08-27 13:42:07,538 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 458 transitions. [2023-08-27 13:42:07,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:07,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 458 transitions. [2023-08-27 13:42:07,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.5) internal successors, (458), 4 states have internal predecessors, (458), 0 states have call successors, (0), 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 13:42:07,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 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 13:42:07,541 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 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 13:42:07,542 INFO L175 Difference]: Start difference. First operand has 43 places, 38 transitions, 104 flow. Second operand 4 states and 458 transitions. [2023-08-27 13:42:07,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 63 transitions, 282 flow [2023-08-27 13:42:07,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 281 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 13:42:07,544 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 147 flow [2023-08-27 13:42:07,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-27 13:42:07,545 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-08-27 13:42:07,545 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 147 flow [2023-08-27 13:42:07,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 100.5) internal successors, (402), 4 states have internal predecessors, (402), 0 states have call successors, (0), 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 13:42:07,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:07,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:42:07,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 13:42:07,546 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:07,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:07,546 INFO L85 PathProgramCache]: Analyzing trace with hash -1387202049, now seen corresponding path program 1 times [2023-08-27 13:42:07,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:07,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333973918] [2023-08-27 13:42:07,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:07,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:07,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:07,686 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 13:42:07,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:07,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333973918] [2023-08-27 13:42:07,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333973918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:07,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:07,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:42:07,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787955354] [2023-08-27 13:42:07,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:07,690 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:42:07,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:07,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:42:07,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:42:07,692 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-08-27 13:42:07,693 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 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 13:42:07,693 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:07,693 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-08-27 13:42:07,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:07,921 INFO L124 PetriNetUnfolderBase]: 1225/2012 cut-off events. [2023-08-27 13:42:07,921 INFO L125 PetriNetUnfolderBase]: For 624/624 co-relation queries the response was YES. [2023-08-27 13:42:07,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4744 conditions, 2012 events. 1225/2012 cut-off events. For 624/624 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 11576 event pairs, 480 based on Foata normal form. 0/1462 useless extension candidates. Maximal degree in co-relation 4734. Up to 1417 conditions per place. [2023-08-27 13:42:07,934 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 52 selfloop transitions, 7 changer transitions 0/63 dead transitions. [2023-08-27 13:42:07,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 339 flow [2023-08-27 13:42:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:42:07,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:42:07,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 535 transitions. [2023-08-27 13:42:07,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930875576036866 [2023-08-27 13:42:07,937 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 535 transitions. [2023-08-27 13:42:07,937 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 535 transitions. [2023-08-27 13:42:07,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:07,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 535 transitions. [2023-08-27 13:42:07,939 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.0) internal successors, (535), 5 states have internal predecessors, (535), 0 states have call successors, (0), 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 13:42:07,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 13:42:07,941 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 13:42:07,941 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 147 flow. Second operand 5 states and 535 transitions. [2023-08-27 13:42:07,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 339 flow [2023-08-27 13:42:07,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 63 transitions, 319 flow, removed 5 selfloop flow, removed 2 redundant places. [2023-08-27 13:42:07,946 INFO L231 Difference]: Finished difference. Result has 46 places, 41 transitions, 157 flow [2023-08-27 13:42:07,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=157, PETRI_PLACES=46, PETRI_TRANSITIONS=41} [2023-08-27 13:42:07,948 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2023-08-27 13:42:07,949 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 41 transitions, 157 flow [2023-08-27 13:42:07,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 96.0) internal successors, (480), 5 states have internal predecessors, (480), 0 states have call successors, (0), 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 13:42:07,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:07,949 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:42:07,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 13:42:07,950 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:07,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:07,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1387202048, now seen corresponding path program 1 times [2023-08-27 13:42:07,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:07,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967731686] [2023-08-27 13:42:07,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:07,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:07,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:08,076 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 13:42:08,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:08,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967731686] [2023-08-27 13:42:08,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967731686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:08,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:08,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 13:42:08,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941829094] [2023-08-27 13:42:08,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:08,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 13:42:08,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:08,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 13:42:08,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 13:42:08,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-27 13:42:08,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 41 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 13:42:08,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:08,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-27 13:42:08,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:08,230 INFO L124 PetriNetUnfolderBase]: 720/1202 cut-off events. [2023-08-27 13:42:08,230 INFO L125 PetriNetUnfolderBase]: For 612/612 co-relation queries the response was YES. [2023-08-27 13:42:08,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3191 conditions, 1202 events. 720/1202 cut-off events. For 612/612 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 5792 event pairs, 256 based on Foata normal form. 125/1196 useless extension candidates. Maximal degree in co-relation 3180. Up to 767 conditions per place. [2023-08-27 13:42:08,238 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 50 selfloop transitions, 7 changer transitions 0/61 dead transitions. [2023-08-27 13:42:08,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 61 transitions, 349 flow [2023-08-27 13:42:08,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 13:42:08,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 13:42:08,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-27 13:42:08,240 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5299539170506913 [2023-08-27 13:42:08,240 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-27 13:42:08,240 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-27 13:42:08,240 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:08,241 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-27 13:42:08,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 0 states have call successors, (0), 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 13:42:08,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:42:08,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 217.0) internal successors, (868), 4 states have internal predecessors, (868), 0 states have call successors, (0), 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 13:42:08,244 INFO L175 Difference]: Start difference. First operand has 46 places, 41 transitions, 157 flow. Second operand 3 states and 345 transitions. [2023-08-27 13:42:08,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 61 transitions, 349 flow [2023-08-27 13:42:08,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 61 transitions, 344 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 13:42:08,248 INFO L231 Difference]: Finished difference. Result has 47 places, 44 transitions, 197 flow [2023-08-27 13:42:08,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=197, PETRI_PLACES=47, PETRI_TRANSITIONS=44} [2023-08-27 13:42:08,250 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-08-27 13:42:08,250 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 44 transitions, 197 flow [2023-08-27 13:42:08,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.66666666666667) internal successors, (302), 3 states have internal predecessors, (302), 0 states have call successors, (0), 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 13:42:08,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:08,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:42:08,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 13:42:08,251 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:08,251 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:08,251 INFO L85 PathProgramCache]: Analyzing trace with hash 1491762413, now seen corresponding path program 1 times [2023-08-27 13:42:08,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:08,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745202752] [2023-08-27 13:42:08,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:08,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:08,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:08,372 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 13:42:08,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:08,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745202752] [2023-08-27 13:42:08,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745202752] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:08,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:08,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:42:08,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410641510] [2023-08-27 13:42:08,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:08,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:42:08,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:08,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:42:08,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:42:08,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-27 13:42:08,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 44 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 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 13:42:08,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:08,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-27 13:42:08,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:08,522 INFO L124 PetriNetUnfolderBase]: 533/966 cut-off events. [2023-08-27 13:42:08,522 INFO L125 PetriNetUnfolderBase]: For 901/901 co-relation queries the response was YES. [2023-08-27 13:42:08,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2789 conditions, 966 events. 533/966 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4933 event pairs, 2 based on Foata normal form. 0/964 useless extension candidates. Maximal degree in co-relation 2777. Up to 472 conditions per place. [2023-08-27 13:42:08,533 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 63 selfloop transitions, 10 changer transitions 0/77 dead transitions. [2023-08-27 13:42:08,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 77 transitions, 470 flow [2023-08-27 13:42:08,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:42:08,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:42:08,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 559 transitions. [2023-08-27 13:42:08,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5152073732718894 [2023-08-27 13:42:08,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 559 transitions. [2023-08-27 13:42:08,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 559 transitions. [2023-08-27 13:42:08,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:08,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 559 transitions. [2023-08-27 13:42:08,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 0 states have call successors, (0), 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 13:42:08,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 13:42:08,540 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 13:42:08,540 INFO L175 Difference]: Start difference. First operand has 47 places, 44 transitions, 197 flow. Second operand 5 states and 559 transitions. [2023-08-27 13:42:08,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 77 transitions, 470 flow [2023-08-27 13:42:08,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 77 transitions, 442 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-27 13:42:08,544 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 186 flow [2023-08-27 13:42:08,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2023-08-27 13:42:08,547 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -1 predicate places. [2023-08-27 13:42:08,549 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 186 flow [2023-08-27 13:42:08,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 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 13:42:08,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:08,550 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:42:08,550 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 13:42:08,550 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:08,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:08,551 INFO L85 PathProgramCache]: Analyzing trace with hash -565554970, now seen corresponding path program 1 times [2023-08-27 13:42:08,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:08,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329281902] [2023-08-27 13:42:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:08,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:08,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:08,713 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 13:42:08,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:08,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329281902] [2023-08-27 13:42:08,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329281902] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:08,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:08,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 13:42:08,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408877829] [2023-08-27 13:42:08,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:08,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:42:08,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:42:08,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:42:08,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-08-27 13:42:08,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 41 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 96.42857142857143) internal successors, (675), 7 states have internal predecessors, (675), 0 states have call successors, (0), 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 13:42:08,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:08,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-08-27 13:42:08,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:08,951 INFO L124 PetriNetUnfolderBase]: 718/1385 cut-off events. [2023-08-27 13:42:08,952 INFO L125 PetriNetUnfolderBase]: For 1392/1392 co-relation queries the response was YES. [2023-08-27 13:42:08,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3789 conditions, 1385 events. 718/1385 cut-off events. For 1392/1392 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8066 event pairs, 110 based on Foata normal form. 0/1277 useless extension candidates. Maximal degree in co-relation 3776. Up to 499 conditions per place. [2023-08-27 13:42:08,963 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 72 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2023-08-27 13:42:08,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 98 transitions, 585 flow [2023-08-27 13:42:08,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 13:42:08,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 13:42:08,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 656 transitions. [2023-08-27 13:42:08,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038402457757296 [2023-08-27 13:42:08,965 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 656 transitions. [2023-08-27 13:42:08,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 656 transitions. [2023-08-27 13:42:08,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:08,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 656 transitions. [2023-08-27 13:42:08,967 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 109.33333333333333) internal successors, (656), 6 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 13:42:08,969 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 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 13:42:08,970 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 217.0) internal successors, (1519), 7 states have internal predecessors, (1519), 0 states have call successors, (0), 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 13:42:08,970 INFO L175 Difference]: Start difference. First operand has 47 places, 41 transitions, 186 flow. Second operand 6 states and 656 transitions. [2023-08-27 13:42:08,970 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 98 transitions, 585 flow [2023-08-27 13:42:08,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 98 transitions, 499 flow, removed 22 selfloop flow, removed 5 redundant places. [2023-08-27 13:42:08,975 INFO L231 Difference]: Finished difference. Result has 49 places, 53 transitions, 295 flow [2023-08-27 13:42:08,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=295, PETRI_PLACES=49, PETRI_TRANSITIONS=53} [2023-08-27 13:42:08,976 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 1 predicate places. [2023-08-27 13:42:08,976 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 53 transitions, 295 flow [2023-08-27 13:42:08,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.42857142857143) internal successors, (675), 7 states have internal predecessors, (675), 0 states have call successors, (0), 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 13:42:08,977 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:08,977 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:42:08,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 13:42:08,977 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:08,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:08,977 INFO L85 PathProgramCache]: Analyzing trace with hash -983526552, now seen corresponding path program 2 times [2023-08-27 13:42:08,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:08,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516927987] [2023-08-27 13:42:08,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:08,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:08,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:09,085 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 13:42:09,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:09,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516927987] [2023-08-27 13:42:09,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516927987] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:09,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:09,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 13:42:09,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674498551] [2023-08-27 13:42:09,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 13:42:09,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:09,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 13:42:09,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 13:42:09,088 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 99 out of 217 [2023-08-27 13:42:09,088 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 53 transitions, 295 flow. Second operand has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 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 13:42:09,088 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:09,088 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 99 of 217 [2023-08-27 13:42:09,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:09,221 INFO L124 PetriNetUnfolderBase]: 603/1118 cut-off events. [2023-08-27 13:42:09,222 INFO L125 PetriNetUnfolderBase]: For 2086/2101 co-relation queries the response was YES. [2023-08-27 13:42:09,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3431 conditions, 1118 events. 603/1118 cut-off events. For 2086/2101 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5677 event pairs, 158 based on Foata normal form. 52/1157 useless extension candidates. Maximal degree in co-relation 3418. Up to 411 conditions per place. [2023-08-27 13:42:09,229 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 67 selfloop transitions, 13 changer transitions 0/84 dead transitions. [2023-08-27 13:42:09,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 84 transitions, 587 flow [2023-08-27 13:42:09,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 13:42:09,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 13:42:09,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 452 transitions. [2023-08-27 13:42:09,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5207373271889401 [2023-08-27 13:42:09,231 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 452 transitions. [2023-08-27 13:42:09,231 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 452 transitions. [2023-08-27 13:42:09,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:09,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 452 transitions. [2023-08-27 13:42:09,232 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 0 states have call successors, (0), 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 13:42:09,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 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 13:42:09,234 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 217.0) internal successors, (1085), 5 states have internal predecessors, (1085), 0 states have call successors, (0), 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 13:42:09,234 INFO L175 Difference]: Start difference. First operand has 49 places, 53 transitions, 295 flow. Second operand 4 states and 452 transitions. [2023-08-27 13:42:09,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 84 transitions, 587 flow [2023-08-27 13:42:09,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 84 transitions, 569 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-27 13:42:09,239 INFO L231 Difference]: Finished difference. Result has 50 places, 59 transitions, 378 flow [2023-08-27 13:42:09,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=277, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=378, PETRI_PLACES=50, PETRI_TRANSITIONS=59} [2023-08-27 13:42:09,241 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2023-08-27 13:42:09,241 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 59 transitions, 378 flow [2023-08-27 13:42:09,241 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 101.5) internal successors, (406), 4 states have internal predecessors, (406), 0 states have call successors, (0), 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 13:42:09,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:09,241 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 13:42:09,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 13:42:09,242 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:09,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:09,242 INFO L85 PathProgramCache]: Analyzing trace with hash 982316379, now seen corresponding path program 1 times [2023-08-27 13:42:09,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:09,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186730185] [2023-08-27 13:42:09,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:09,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:09,479 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 13:42:09,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:09,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186730185] [2023-08-27 13:42:09,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186730185] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:09,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:09,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:42:09,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842166555] [2023-08-27 13:42:09,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:09,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-27 13:42:09,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:09,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-27 13:42:09,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-08-27 13:42:09,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 217 [2023-08-27 13:42:09,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 59 transitions, 378 flow. Second operand has 9 states, 9 states have (on average 96.66666666666667) internal successors, (870), 9 states have internal predecessors, (870), 0 states have call successors, (0), 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 13:42:09,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:09,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 217 [2023-08-27 13:42:09,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:09,817 INFO L124 PetriNetUnfolderBase]: 655/1240 cut-off events. [2023-08-27 13:42:09,817 INFO L125 PetriNetUnfolderBase]: For 3149/3193 co-relation queries the response was YES. [2023-08-27 13:42:09,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4024 conditions, 1240 events. 655/1240 cut-off events. For 3149/3193 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6696 event pairs, 52 based on Foata normal form. 36/1266 useless extension candidates. Maximal degree in co-relation 4010. Up to 301 conditions per place. [2023-08-27 13:42:09,823 INFO L140 encePairwiseOnDemand]: 207/217 looper letters, 95 selfloop transitions, 42 changer transitions 0/141 dead transitions. [2023-08-27 13:42:09,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 141 transitions, 936 flow [2023-08-27 13:42:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 13:42:09,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 13:42:09,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1271 transitions. [2023-08-27 13:42:09,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2023-08-27 13:42:09,827 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1271 transitions. [2023-08-27 13:42:09,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1271 transitions. [2023-08-27 13:42:09,828 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:09,828 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1271 transitions. [2023-08-27 13:42:09,830 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 105.91666666666667) internal successors, (1271), 12 states have internal predecessors, (1271), 0 states have call successors, (0), 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 13:42:09,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 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 13:42:09,834 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 217.0) internal successors, (2821), 13 states have internal predecessors, (2821), 0 states have call successors, (0), 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 13:42:09,835 INFO L175 Difference]: Start difference. First operand has 50 places, 59 transitions, 378 flow. Second operand 12 states and 1271 transitions. [2023-08-27 13:42:09,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 141 transitions, 936 flow [2023-08-27 13:42:09,839 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 141 transitions, 855 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-08-27 13:42:09,840 INFO L231 Difference]: Finished difference. Result has 56 places, 70 transitions, 501 flow [2023-08-27 13:42:09,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=501, PETRI_PLACES=56, PETRI_TRANSITIONS=70} [2023-08-27 13:42:09,841 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 8 predicate places. [2023-08-27 13:42:09,841 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 70 transitions, 501 flow [2023-08-27 13:42:09,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 96.66666666666667) internal successors, (870), 9 states have internal predecessors, (870), 0 states have call successors, (0), 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 13:42:09,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:09,842 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] [2023-08-27 13:42:09,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 13:42:09,842 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:09,843 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:09,843 INFO L85 PathProgramCache]: Analyzing trace with hash 1173132776, now seen corresponding path program 1 times [2023-08-27 13:42:09,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:09,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672011171] [2023-08-27 13:42:09,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:09,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:09,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:10,082 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 13:42:10,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:10,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672011171] [2023-08-27 13:42:10,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672011171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:10,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:10,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 13:42:10,084 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312650694] [2023-08-27 13:42:10,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:10,085 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:42:10,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:10,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:42:10,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:42:10,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:10,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 70 transitions, 501 flow. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 13:42:10,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:10,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:10,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:10,268 INFO L124 PetriNetUnfolderBase]: 619/1196 cut-off events. [2023-08-27 13:42:10,269 INFO L125 PetriNetUnfolderBase]: For 3672/3764 co-relation queries the response was YES. [2023-08-27 13:42:10,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3844 conditions, 1196 events. 619/1196 cut-off events. For 3672/3764 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6613 event pairs, 168 based on Foata normal form. 38/1224 useless extension candidates. Maximal degree in co-relation 3830. Up to 810 conditions per place. [2023-08-27 13:42:10,274 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 81 selfloop transitions, 20 changer transitions 0/105 dead transitions. [2023-08-27 13:42:10,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 828 flow [2023-08-27 13:42:10,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:42:10,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:42:10,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 720 transitions. [2023-08-27 13:42:10,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4739960500329164 [2023-08-27 13:42:10,277 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 720 transitions. [2023-08-27 13:42:10,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 720 transitions. [2023-08-27 13:42:10,278 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:10,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 720 transitions. [2023-08-27 13:42:10,280 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 102.85714285714286) internal successors, (720), 7 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 13:42:10,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:10,282 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:10,282 INFO L175 Difference]: Start difference. First operand has 56 places, 70 transitions, 501 flow. Second operand 7 states and 720 transitions. [2023-08-27 13:42:10,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 828 flow [2023-08-27 13:42:10,292 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 105 transitions, 703 flow, removed 17 selfloop flow, removed 7 redundant places. [2023-08-27 13:42:10,295 INFO L231 Difference]: Finished difference. Result has 57 places, 75 transitions, 477 flow [2023-08-27 13:42:10,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=381, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=477, PETRI_PLACES=57, PETRI_TRANSITIONS=75} [2023-08-27 13:42:10,296 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-27 13:42:10,296 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 75 transitions, 477 flow [2023-08-27 13:42:10,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 13:42:10,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:10,297 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] [2023-08-27 13:42:10,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 13:42:10,297 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:10,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:10,298 INFO L85 PathProgramCache]: Analyzing trace with hash -895702056, now seen corresponding path program 2 times [2023-08-27 13:42:10,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:10,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070196559] [2023-08-27 13:42:10,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:10,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:10,524 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 13:42:10,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:10,525 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070196559] [2023-08-27 13:42:10,525 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070196559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:10,525 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:10,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:42:10,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311775383] [2023-08-27 13:42:10,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:10,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:42:10,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:42:10,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:42:10,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:10,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 75 transitions, 477 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:10,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:10,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:10,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:10,798 INFO L124 PetriNetUnfolderBase]: 633/1242 cut-off events. [2023-08-27 13:42:10,798 INFO L125 PetriNetUnfolderBase]: For 2967/3079 co-relation queries the response was YES. [2023-08-27 13:42:10,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3851 conditions, 1242 events. 633/1242 cut-off events. For 2967/3079 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7125 event pairs, 126 based on Foata normal form. 40/1274 useless extension candidates. Maximal degree in co-relation 3838. Up to 478 conditions per place. [2023-08-27 13:42:10,804 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 78 selfloop transitions, 38 changer transitions 0/120 dead transitions. [2023-08-27 13:42:10,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 120 transitions, 855 flow [2023-08-27 13:42:10,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 13:42:10,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 13:42:10,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 925 transitions. [2023-08-27 13:42:10,807 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47363031233998976 [2023-08-27 13:42:10,807 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 925 transitions. [2023-08-27 13:42:10,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 925 transitions. [2023-08-27 13:42:10,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:10,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 925 transitions. [2023-08-27 13:42:10,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 102.77777777777777) internal successors, (925), 9 states have internal predecessors, (925), 0 states have call successors, (0), 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 13:42:10,811 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 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 13:42:10,812 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 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 13:42:10,812 INFO L175 Difference]: Start difference. First operand has 57 places, 75 transitions, 477 flow. Second operand 9 states and 925 transitions. [2023-08-27 13:42:10,812 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 120 transitions, 855 flow [2023-08-27 13:42:10,818 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 120 transitions, 849 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-27 13:42:10,819 INFO L231 Difference]: Finished difference. Result has 66 places, 80 transitions, 599 flow [2023-08-27 13:42:10,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=471, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=599, PETRI_PLACES=66, PETRI_TRANSITIONS=80} [2023-08-27 13:42:10,820 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 18 predicate places. [2023-08-27 13:42:10,820 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 80 transitions, 599 flow [2023-08-27 13:42:10,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:10,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:10,821 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] [2023-08-27 13:42:10,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 13:42:10,821 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:10,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:10,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1194771374, now seen corresponding path program 3 times [2023-08-27 13:42:10,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:10,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323593781] [2023-08-27 13:42:10,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:10,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:11,080 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 13:42:11,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:11,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323593781] [2023-08-27 13:42:11,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1323593781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:11,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:11,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 13:42:11,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359238051] [2023-08-27 13:42:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:11,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 13:42:11,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:11,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 13:42:11,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 13:42:11,082 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 217 [2023-08-27 13:42:11,082 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 80 transitions, 599 flow. Second operand has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 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 13:42:11,082 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:11,083 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 217 [2023-08-27 13:42:11,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:11,434 INFO L124 PetriNetUnfolderBase]: 2086/3541 cut-off events. [2023-08-27 13:42:11,435 INFO L125 PetriNetUnfolderBase]: For 10618/10618 co-relation queries the response was YES. [2023-08-27 13:42:11,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12316 conditions, 3541 events. 2086/3541 cut-off events. For 10618/10618 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 20443 event pairs, 588 based on Foata normal form. 4/3545 useless extension candidates. Maximal degree in co-relation 12300. Up to 1351 conditions per place. [2023-08-27 13:42:11,449 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 120 selfloop transitions, 7 changer transitions 91/218 dead transitions. [2023-08-27 13:42:11,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 218 transitions, 2077 flow [2023-08-27 13:42:11,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 13:42:11,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 13:42:11,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 539 transitions. [2023-08-27 13:42:11,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4967741935483871 [2023-08-27 13:42:11,452 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 539 transitions. [2023-08-27 13:42:11,452 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 539 transitions. [2023-08-27 13:42:11,452 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:11,452 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 539 transitions. [2023-08-27 13:42:11,453 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 107.8) internal successors, (539), 5 states have internal predecessors, (539), 0 states have call successors, (0), 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 13:42:11,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 13:42:11,455 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 217.0) internal successors, (1302), 6 states have internal predecessors, (1302), 0 states have call successors, (0), 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 13:42:11,455 INFO L175 Difference]: Start difference. First operand has 66 places, 80 transitions, 599 flow. Second operand 5 states and 539 transitions. [2023-08-27 13:42:11,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 218 transitions, 2077 flow [2023-08-27 13:42:11,494 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 218 transitions, 1954 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-27 13:42:11,496 INFO L231 Difference]: Finished difference. Result has 69 places, 75 transitions, 517 flow [2023-08-27 13:42:11,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=551, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=517, PETRI_PLACES=69, PETRI_TRANSITIONS=75} [2023-08-27 13:42:11,497 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 21 predicate places. [2023-08-27 13:42:11,497 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 75 transitions, 517 flow [2023-08-27 13:42:11,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 97.2) internal successors, (486), 5 states have internal predecessors, (486), 0 states have call successors, (0), 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 13:42:11,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:11,498 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] [2023-08-27 13:42:11,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 13:42:11,498 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:11,498 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:11,498 INFO L85 PathProgramCache]: Analyzing trace with hash -786278306, now seen corresponding path program 4 times [2023-08-27 13:42:11,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:11,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084098959] [2023-08-27 13:42:11,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:11,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:11,673 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 13:42:11,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:11,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084098959] [2023-08-27 13:42:11,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084098959] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:11,674 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:11,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 13:42:11,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112900422] [2023-08-27 13:42:11,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:11,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:42:11,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:11,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:42:11,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:42:11,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:11,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 75 transitions, 517 flow. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 13:42:11,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:11,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:11,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:11,846 INFO L124 PetriNetUnfolderBase]: 394/815 cut-off events. [2023-08-27 13:42:11,846 INFO L125 PetriNetUnfolderBase]: For 2348/2416 co-relation queries the response was YES. [2023-08-27 13:42:11,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2937 conditions, 815 events. 394/815 cut-off events. For 2348/2416 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 4237 event pairs, 72 based on Foata normal form. 40/852 useless extension candidates. Maximal degree in co-relation 2917. Up to 525 conditions per place. [2023-08-27 13:42:11,851 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 59 selfloop transitions, 16 changer transitions 11/95 dead transitions. [2023-08-27 13:42:11,851 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 95 transitions, 735 flow [2023-08-27 13:42:11,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:42:11,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:42:11,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 709 transitions. [2023-08-27 13:42:11,854 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46675444371296904 [2023-08-27 13:42:11,854 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 709 transitions. [2023-08-27 13:42:11,854 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 709 transitions. [2023-08-27 13:42:11,854 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:11,854 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 709 transitions. [2023-08-27 13:42:11,856 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 101.28571428571429) internal successors, (709), 7 states have internal predecessors, (709), 0 states have call successors, (0), 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 13:42:11,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:11,858 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:11,858 INFO L175 Difference]: Start difference. First operand has 69 places, 75 transitions, 517 flow. Second operand 7 states and 709 transitions. [2023-08-27 13:42:11,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 95 transitions, 735 flow [2023-08-27 13:42:11,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 95 transitions, 705 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-27 13:42:11,864 INFO L231 Difference]: Finished difference. Result has 72 places, 70 transitions, 493 flow [2023-08-27 13:42:11,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=493, PETRI_PLACES=72, PETRI_TRANSITIONS=70} [2023-08-27 13:42:11,865 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 24 predicate places. [2023-08-27 13:42:11,865 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 70 transitions, 493 flow [2023-08-27 13:42:11,866 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 13:42:11,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:11,866 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] [2023-08-27 13:42:11,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 13:42:11,866 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:11,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:11,867 INFO L85 PathProgramCache]: Analyzing trace with hash -680844406, now seen corresponding path program 5 times [2023-08-27 13:42:11,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:11,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405469325] [2023-08-27 13:42:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:11,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:11,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:12,065 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 13:42:12,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:12,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405469325] [2023-08-27 13:42:12,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405469325] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:12,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:12,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 13:42:12,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082130973] [2023-08-27 13:42:12,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:12,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 13:42:12,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:12,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 13:42:12,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 13:42:12,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:12,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 70 transitions, 493 flow. Second operand has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 13:42:12,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:12,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:12,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:12,194 INFO L124 PetriNetUnfolderBase]: 186/423 cut-off events. [2023-08-27 13:42:12,194 INFO L125 PetriNetUnfolderBase]: For 1060/1100 co-relation queries the response was YES. [2023-08-27 13:42:12,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1512 conditions, 423 events. 186/423 cut-off events. For 1060/1100 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1861 event pairs, 24 based on Foata normal form. 38/461 useless extension candidates. Maximal degree in co-relation 1492. Up to 279 conditions per place. [2023-08-27 13:42:12,196 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 61 selfloop transitions, 16 changer transitions 0/83 dead transitions. [2023-08-27 13:42:12,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 83 transitions, 678 flow [2023-08-27 13:42:12,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:42:12,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:42:12,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 702 transitions. [2023-08-27 13:42:12,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4621461487820935 [2023-08-27 13:42:12,200 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 702 transitions. [2023-08-27 13:42:12,200 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 702 transitions. [2023-08-27 13:42:12,200 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:12,200 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 702 transitions. [2023-08-27 13:42:12,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.28571428571429) internal successors, (702), 7 states have internal predecessors, (702), 0 states have call successors, (0), 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 13:42:12,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:12,205 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:12,205 INFO L175 Difference]: Start difference. First operand has 72 places, 70 transitions, 493 flow. Second operand 7 states and 702 transitions. [2023-08-27 13:42:12,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 83 transitions, 678 flow [2023-08-27 13:42:12,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 83 transitions, 639 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-08-27 13:42:12,209 INFO L231 Difference]: Finished difference. Result has 67 places, 68 transitions, 491 flow [2023-08-27 13:42:12,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=403, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=491, PETRI_PLACES=67, PETRI_TRANSITIONS=68} [2023-08-27 13:42:12,210 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 19 predicate places. [2023-08-27 13:42:12,210 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 68 transitions, 491 flow [2023-08-27 13:42:12,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 96.66666666666667) internal successors, (580), 6 states have internal predecessors, (580), 0 states have call successors, (0), 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 13:42:12,211 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:12,211 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] [2023-08-27 13:42:12,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 13:42:12,211 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:12,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:12,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1878438016, now seen corresponding path program 6 times [2023-08-27 13:42:12,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:12,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118548570] [2023-08-27 13:42:12,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:12,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:12,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:12,411 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 13:42:12,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118548570] [2023-08-27 13:42:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118548570] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:42:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1277475179] [2023-08-27 13:42:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:12,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 13:42:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:12,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 13:42:12,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:42:12,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:12,414 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 68 transitions, 491 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:12,414 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:12,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:12,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:12,585 INFO L124 PetriNetUnfolderBase]: 186/431 cut-off events. [2023-08-27 13:42:12,585 INFO L125 PetriNetUnfolderBase]: For 1174/1238 co-relation queries the response was YES. [2023-08-27 13:42:12,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1550 conditions, 431 events. 186/431 cut-off events. For 1174/1238 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1930 event pairs, 20 based on Foata normal form. 30/461 useless extension candidates. Maximal degree in co-relation 1532. Up to 177 conditions per place. [2023-08-27 13:42:12,587 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 59 selfloop transitions, 22 changer transitions 6/93 dead transitions. [2023-08-27 13:42:12,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 93 transitions, 741 flow [2023-08-27 13:42:12,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:42:12,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:42:12,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 999 transitions. [2023-08-27 13:42:12,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46036866359447004 [2023-08-27 13:42:12,590 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 999 transitions. [2023-08-27 13:42:12,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 999 transitions. [2023-08-27 13:42:12,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:12,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 999 transitions. [2023-08-27 13:42:12,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 99.9) internal successors, (999), 10 states have internal predecessors, (999), 0 states have call successors, (0), 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 13:42:12,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 0 states have call successors, (0), 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 13:42:12,597 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 0 states have call successors, (0), 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 13:42:12,597 INFO L175 Difference]: Start difference. First operand has 67 places, 68 transitions, 491 flow. Second operand 10 states and 999 transitions. [2023-08-27 13:42:12,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 93 transitions, 741 flow [2023-08-27 13:42:12,600 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 93 transitions, 723 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-27 13:42:12,602 INFO L231 Difference]: Finished difference. Result has 75 places, 66 transitions, 497 flow [2023-08-27 13:42:12,602 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=473, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=497, PETRI_PLACES=75, PETRI_TRANSITIONS=66} [2023-08-27 13:42:12,603 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 27 predicate places. [2023-08-27 13:42:12,603 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 66 transitions, 497 flow [2023-08-27 13:42:12,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:12,603 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:12,603 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] [2023-08-27 13:42:12,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 13:42:12,603 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:12,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:12,606 INFO L85 PathProgramCache]: Analyzing trace with hash 2037899038, now seen corresponding path program 7 times [2023-08-27 13:42:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:12,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467159823] [2023-08-27 13:42:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:12,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:12,781 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 13:42:12,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:12,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467159823] [2023-08-27 13:42:12,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467159823] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:12,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:12,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:42:12,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310898520] [2023-08-27 13:42:12,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:12,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 13:42:12,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:12,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 13:42:12,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:42:12,787 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:12,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 66 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:12,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:12,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:12,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:13,016 INFO L124 PetriNetUnfolderBase]: 176/411 cut-off events. [2023-08-27 13:42:13,017 INFO L125 PetriNetUnfolderBase]: For 1200/1254 co-relation queries the response was YES. [2023-08-27 13:42:13,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 411 events. 176/411 cut-off events. For 1200/1254 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1801 event pairs, 12 based on Foata normal form. 26/437 useless extension candidates. Maximal degree in co-relation 1506. Up to 160 conditions per place. [2023-08-27 13:42:13,019 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 54 selfloop transitions, 24 changer transitions 11/95 dead transitions. [2023-08-27 13:42:13,019 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 95 transitions, 770 flow [2023-08-27 13:42:13,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-27 13:42:13,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-27 13:42:13,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1001 transitions. [2023-08-27 13:42:13,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4612903225806452 [2023-08-27 13:42:13,023 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1001 transitions. [2023-08-27 13:42:13,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1001 transitions. [2023-08-27 13:42:13,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:13,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1001 transitions. [2023-08-27 13:42:13,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 100.1) internal successors, (1001), 10 states have internal predecessors, (1001), 0 states have call successors, (0), 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 13:42:13,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 0 states have call successors, (0), 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 13:42:13,029 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 217.0) internal successors, (2387), 11 states have internal predecessors, (2387), 0 states have call successors, (0), 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 13:42:13,030 INFO L175 Difference]: Start difference. First operand has 75 places, 66 transitions, 497 flow. Second operand 10 states and 1001 transitions. [2023-08-27 13:42:13,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 95 transitions, 770 flow [2023-08-27 13:42:13,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 95 transitions, 711 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-27 13:42:13,035 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 460 flow [2023-08-27 13:42:13,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=442, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=460, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-08-27 13:42:13,035 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 28 predicate places. [2023-08-27 13:42:13,035 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 460 flow [2023-08-27 13:42:13,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:13,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:13,036 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] [2023-08-27 13:42:13,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 13:42:13,036 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:13,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:13,037 INFO L85 PathProgramCache]: Analyzing trace with hash 372149466, now seen corresponding path program 8 times [2023-08-27 13:42:13,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:13,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249481559] [2023-08-27 13:42:13,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:13,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:13,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:13,255 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 13:42:13,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:13,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249481559] [2023-08-27 13:42:13,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249481559] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:13,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:13,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:42:13,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417209051] [2023-08-27 13:42:13,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:13,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 13:42:13,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:13,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 13:42:13,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:42:13,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:13,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 460 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:13,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:13,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:13,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:13,433 INFO L124 PetriNetUnfolderBase]: 149/356 cut-off events. [2023-08-27 13:42:13,433 INFO L125 PetriNetUnfolderBase]: For 1026/1072 co-relation queries the response was YES. [2023-08-27 13:42:13,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1342 conditions, 356 events. 149/356 cut-off events. For 1026/1072 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1527 event pairs, 18 based on Foata normal form. 26/382 useless extension candidates. Maximal degree in co-relation 1322. Up to 230 conditions per place. [2023-08-27 13:42:13,435 INFO L140 encePairwiseOnDemand]: 210/217 looper letters, 55 selfloop transitions, 12 changer transitions 11/84 dead transitions. [2023-08-27 13:42:13,435 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 84 transitions, 690 flow [2023-08-27 13:42:13,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-27 13:42:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-27 13:42:13,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1083 transitions. [2023-08-27 13:42:13,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4537075827398408 [2023-08-27 13:42:13,438 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1083 transitions. [2023-08-27 13:42:13,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1083 transitions. [2023-08-27 13:42:13,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:13,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1083 transitions. [2023-08-27 13:42:13,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 98.45454545454545) internal successors, (1083), 11 states have internal predecessors, (1083), 0 states have call successors, (0), 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 13:42:13,443 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:42:13,444 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 217.0) internal successors, (2604), 12 states have internal predecessors, (2604), 0 states have call successors, (0), 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 13:42:13,444 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 460 flow. Second operand 11 states and 1083 transitions. [2023-08-27 13:42:13,444 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 84 transitions, 690 flow [2023-08-27 13:42:13,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 84 transitions, 614 flow, removed 7 selfloop flow, removed 8 redundant places. [2023-08-27 13:42:13,448 INFO L231 Difference]: Finished difference. Result has 74 places, 58 transitions, 383 flow [2023-08-27 13:42:13,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=383, PETRI_PLACES=74, PETRI_TRANSITIONS=58} [2023-08-27 13:42:13,448 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 26 predicate places. [2023-08-27 13:42:13,449 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 58 transitions, 383 flow [2023-08-27 13:42:13,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:13,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:13,449 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] [2023-08-27 13:42:13,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 13:42:13,449 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:13,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:13,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1700157352, now seen corresponding path program 9 times [2023-08-27 13:42:13,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:13,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791639359] [2023-08-27 13:42:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:13,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:13,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:13,592 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 13:42:13,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:13,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791639359] [2023-08-27 13:42:13,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791639359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:13,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:13,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:42:13,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817297524] [2023-08-27 13:42:13,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:13,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:42:13,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:13,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:42:13,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:42:13,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:13,595 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 58 transitions, 383 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:13,595 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:13,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:13,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:13,724 INFO L124 PetriNetUnfolderBase]: 124/303 cut-off events. [2023-08-27 13:42:13,724 INFO L125 PetriNetUnfolderBase]: For 742/764 co-relation queries the response was YES. [2023-08-27 13:42:13,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 303 events. 124/303 cut-off events. For 742/764 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1234 event pairs, 10 based on Foata normal form. 26/329 useless extension candidates. Maximal degree in co-relation 1074. Up to 139 conditions per place. [2023-08-27 13:42:13,726 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 48 selfloop transitions, 15 changer transitions 9/78 dead transitions. [2023-08-27 13:42:13,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 78 transitions, 588 flow [2023-08-27 13:42:13,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 13:42:13,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 13:42:13,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 804 transitions. [2023-08-27 13:42:13,727 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631336405529954 [2023-08-27 13:42:13,727 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 804 transitions. [2023-08-27 13:42:13,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 804 transitions. [2023-08-27 13:42:13,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:13,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 804 transitions. [2023-08-27 13:42:13,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 100.5) internal successors, (804), 8 states have internal predecessors, (804), 0 states have call successors, (0), 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 13:42:13,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 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 13:42:13,732 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 217.0) internal successors, (1953), 9 states have internal predecessors, (1953), 0 states have call successors, (0), 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 13:42:13,732 INFO L175 Difference]: Start difference. First operand has 74 places, 58 transitions, 383 flow. Second operand 8 states and 804 transitions. [2023-08-27 13:42:13,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 78 transitions, 588 flow [2023-08-27 13:42:13,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 78 transitions, 547 flow, removed 6 selfloop flow, removed 10 redundant places. [2023-08-27 13:42:13,735 INFO L231 Difference]: Finished difference. Result has 68 places, 51 transitions, 325 flow [2023-08-27 13:42:13,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=336, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=325, PETRI_PLACES=68, PETRI_TRANSITIONS=51} [2023-08-27 13:42:13,736 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 20 predicate places. [2023-08-27 13:42:13,736 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 51 transitions, 325 flow [2023-08-27 13:42:13,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:13,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:13,736 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] [2023-08-27 13:42:13,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 13:42:13,737 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:13,737 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:13,737 INFO L85 PathProgramCache]: Analyzing trace with hash 2063051246, now seen corresponding path program 10 times [2023-08-27 13:42:13,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:13,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485718196] [2023-08-27 13:42:13,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:13,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:13,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:13,879 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 13:42:13,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:13,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1485718196] [2023-08-27 13:42:13,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1485718196] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:13,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:13,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:42:13,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440798121] [2023-08-27 13:42:13,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:13,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:42:13,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:13,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:42:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:42:13,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:13,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:13,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:13,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:13,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:13,989 INFO L124 PetriNetUnfolderBase]: 104/267 cut-off events. [2023-08-27 13:42:13,989 INFO L125 PetriNetUnfolderBase]: For 502/510 co-relation queries the response was YES. [2023-08-27 13:42:13,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 267 events. 104/267 cut-off events. For 502/510 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1052 event pairs, 16 based on Foata normal form. 8/275 useless extension candidates. Maximal degree in co-relation 914. Up to 106 conditions per place. [2023-08-27 13:42:13,991 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 36 selfloop transitions, 23 changer transitions 5/70 dead transitions. [2023-08-27 13:42:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 508 flow [2023-08-27 13:42:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:42:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:42:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 704 transitions. [2023-08-27 13:42:13,993 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46346280447662935 [2023-08-27 13:42:13,993 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 704 transitions. [2023-08-27 13:42:13,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 704 transitions. [2023-08-27 13:42:13,993 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:13,993 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 704 transitions. [2023-08-27 13:42:13,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.57142857142857) internal successors, (704), 7 states have internal predecessors, (704), 0 states have call successors, (0), 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 13:42:13,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:13,996 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:13,996 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 325 flow. Second operand 7 states and 704 transitions. [2023-08-27 13:42:13,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 508 flow [2023-08-27 13:42:13,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 70 transitions, 467 flow, removed 4 selfloop flow, removed 8 redundant places. [2023-08-27 13:42:13,999 INFO L231 Difference]: Finished difference. Result has 64 places, 50 transitions, 329 flow [2023-08-27 13:42:13,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=288, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=329, PETRI_PLACES=64, PETRI_TRANSITIONS=50} [2023-08-27 13:42:13,999 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 16 predicate places. [2023-08-27 13:42:13,999 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 50 transitions, 329 flow [2023-08-27 13:42:14,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:14,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:14,000 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] [2023-08-27 13:42:14,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-08-27 13:42:14,000 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:14,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:14,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1639637306, now seen corresponding path program 11 times [2023-08-27 13:42:14,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:14,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298329003] [2023-08-27 13:42:14,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:14,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:14,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:14,142 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 13:42:14,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:14,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298329003] [2023-08-27 13:42:14,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298329003] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:14,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:14,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:42:14,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628139967] [2023-08-27 13:42:14,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:14,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:42:14,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:14,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:42:14,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:42:14,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:14,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 50 transitions, 329 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:14,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:14,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:14,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:14,258 INFO L124 PetriNetUnfolderBase]: 87/232 cut-off events. [2023-08-27 13:42:14,258 INFO L125 PetriNetUnfolderBase]: For 422/434 co-relation queries the response was YES. [2023-08-27 13:42:14,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 814 conditions, 232 events. 87/232 cut-off events. For 422/434 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 908 event pairs, 8 based on Foata normal form. 20/252 useless extension candidates. Maximal degree in co-relation 796. Up to 70 conditions per place. [2023-08-27 13:42:14,259 INFO L140 encePairwiseOnDemand]: 209/217 looper letters, 28 selfloop transitions, 18 changer transitions 15/65 dead transitions. [2023-08-27 13:42:14,259 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 65 transitions, 478 flow [2023-08-27 13:42:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:42:14,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:42:14,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 703 transitions. [2023-08-27 13:42:14,261 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4628044766293614 [2023-08-27 13:42:14,261 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 703 transitions. [2023-08-27 13:42:14,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 703 transitions. [2023-08-27 13:42:14,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:14,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 703 transitions. [2023-08-27 13:42:14,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 100.42857142857143) internal successors, (703), 7 states have internal predecessors, (703), 0 states have call successors, (0), 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 13:42:14,264 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:14,264 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:14,264 INFO L175 Difference]: Start difference. First operand has 64 places, 50 transitions, 329 flow. Second operand 7 states and 703 transitions. [2023-08-27 13:42:14,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 65 transitions, 478 flow [2023-08-27 13:42:14,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 65 transitions, 419 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-27 13:42:14,266 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 252 flow [2023-08-27 13:42:14,267 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=252, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-27 13:42:14,267 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 14 predicate places. [2023-08-27 13:42:14,267 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 252 flow [2023-08-27 13:42:14,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:14,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:14,268 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] [2023-08-27 13:42:14,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-08-27 13:42:14,268 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:14,268 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:14,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1906526114, now seen corresponding path program 12 times [2023-08-27 13:42:14,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:14,268 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702855727] [2023-08-27 13:42:14,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:14,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:14,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:14,426 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 13:42:14,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:14,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702855727] [2023-08-27 13:42:14,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702855727] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:14,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:14,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-08-27 13:42:14,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46959730] [2023-08-27 13:42:14,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:14,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-27 13:42:14,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:14,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-27 13:42:14,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-27 13:42:14,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:14,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 252 flow. Second operand has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:14,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:14,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:14,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:14,553 INFO L124 PetriNetUnfolderBase]: 36/107 cut-off events. [2023-08-27 13:42:14,553 INFO L125 PetriNetUnfolderBase]: For 256/264 co-relation queries the response was YES. [2023-08-27 13:42:14,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 107 events. 36/107 cut-off events. For 256/264 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 280 event pairs, 4 based on Foata normal form. 12/119 useless extension candidates. Maximal degree in co-relation 365. Up to 47 conditions per place. [2023-08-27 13:42:14,554 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 23 selfloop transitions, 3 changer transitions 15/45 dead transitions. [2023-08-27 13:42:14,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 45 transitions, 308 flow [2023-08-27 13:42:14,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 13:42:14,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 13:42:14,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 878 transitions. [2023-08-27 13:42:14,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4495647721454173 [2023-08-27 13:42:14,556 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 878 transitions. [2023-08-27 13:42:14,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 878 transitions. [2023-08-27 13:42:14,556 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:14,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 878 transitions. [2023-08-27 13:42:14,558 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 97.55555555555556) internal successors, (878), 9 states have internal predecessors, (878), 0 states have call successors, (0), 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 13:42:14,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 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 13:42:14,560 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 217.0) internal successors, (2170), 10 states have internal predecessors, (2170), 0 states have call successors, (0), 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 13:42:14,560 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 252 flow. Second operand 9 states and 878 transitions. [2023-08-27 13:42:14,560 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 45 transitions, 308 flow [2023-08-27 13:42:14,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 254 flow, removed 4 selfloop flow, removed 12 redundant places. [2023-08-27 13:42:14,562 INFO L231 Difference]: Finished difference. Result has 57 places, 28 transitions, 116 flow [2023-08-27 13:42:14,562 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=116, PETRI_PLACES=57, PETRI_TRANSITIONS=28} [2023-08-27 13:42:14,562 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, 9 predicate places. [2023-08-27 13:42:14,563 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 28 transitions, 116 flow [2023-08-27 13:42:14,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 95.75) internal successors, (766), 8 states have internal predecessors, (766), 0 states have call successors, (0), 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 13:42:14,563 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 13:42:14,563 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] [2023-08-27 13:42:14,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-08-27 13:42:14,563 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 25 more)] === [2023-08-27 13:42:14,563 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 13:42:14,564 INFO L85 PathProgramCache]: Analyzing trace with hash 1193250344, now seen corresponding path program 13 times [2023-08-27 13:42:14,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 13:42:14,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102252829] [2023-08-27 13:42:14,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 13:42:14,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 13:42:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 13:42:14,712 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 13:42:14,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 13:42:14,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102252829] [2023-08-27 13:42:14,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102252829] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 13:42:14,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 13:42:14,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 13:42:14,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586010572] [2023-08-27 13:42:14,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 13:42:14,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 13:42:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 13:42:14,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 13:42:14,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-27 13:42:14,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 217 [2023-08-27 13:42:14,715 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 28 transitions, 116 flow. Second operand has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:14,715 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 13:42:14,715 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 217 [2023-08-27 13:42:14,715 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 13:42:14,754 INFO L124 PetriNetUnfolderBase]: 9/34 cut-off events. [2023-08-27 13:42:14,754 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-27 13:42:14,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 34 events. 9/34 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 4/38 useless extension candidates. Maximal degree in co-relation 105. Up to 8 conditions per place. [2023-08-27 13:42:14,755 INFO L140 encePairwiseOnDemand]: 211/217 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-27 13:42:14,755 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 20 transitions, 110 flow [2023-08-27 13:42:14,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 13:42:14,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 13:42:14,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 670 transitions. [2023-08-27 13:42:14,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4410796576695194 [2023-08-27 13:42:14,756 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 670 transitions. [2023-08-27 13:42:14,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 670 transitions. [2023-08-27 13:42:14,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 13:42:14,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 670 transitions. [2023-08-27 13:42:14,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 95.71428571428571) internal successors, (670), 7 states have internal predecessors, (670), 0 states have call successors, (0), 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 13:42:14,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:14,760 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 217.0) internal successors, (1736), 8 states have internal predecessors, (1736), 0 states have call successors, (0), 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 13:42:14,760 INFO L175 Difference]: Start difference. First operand has 57 places, 28 transitions, 116 flow. Second operand 7 states and 670 transitions. [2023-08-27 13:42:14,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 20 transitions, 110 flow [2023-08-27 13:42:14,760 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 20 transitions, 82 flow, removed 4 selfloop flow, removed 11 redundant places. [2023-08-27 13:42:14,760 INFO L231 Difference]: Finished difference. Result has 31 places, 0 transitions, 0 flow [2023-08-27 13:42:14,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=217, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=31, PETRI_TRANSITIONS=0} [2023-08-27 13:42:14,762 INFO L281 CegarLoopForPetriNet]: 48 programPoint places, -17 predicate places. [2023-08-27 13:42:14,762 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 0 transitions, 0 flow [2023-08-27 13:42:14,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.14285714285714) internal successors, (673), 7 states have internal predecessors, (673), 0 states have call successors, (0), 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 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 28 remaining) [2023-08-27 13:42:14,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (15 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (14 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 28 remaining) [2023-08-27 13:42:14,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 28 remaining) [2023-08-27 13:42:14,767 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 28 remaining) [2023-08-27 13:42:14,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-27 13:42:14,768 INFO L445 BasicCegarLoop]: Path program histogram: [13, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 13:42:14,772 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 13:42:14,772 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 13:42:14,775 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 01:42:14 BasicIcfg [2023-08-27 13:42:14,775 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 13:42:14,776 INFO L158 Benchmark]: Toolchain (without parser) took 13543.26ms. Allocated memory was 367.0MB in the beginning and 654.3MB in the end (delta: 287.3MB). Free memory was 342.6MB in the beginning and 508.9MB in the end (delta: -166.3MB). Peak memory consumption was 123.9MB. Max. memory is 16.0GB. [2023-08-27 13:42:14,776 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 343.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 13:42:14,776 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.36ms. Allocated memory is still 367.0MB. Free memory was 342.6MB in the beginning and 331.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 13:42:14,776 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.94ms. Allocated memory is still 367.0MB. Free memory was 331.2MB in the beginning and 329.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 13:42:14,776 INFO L158 Benchmark]: Boogie Preprocessor took 21.86ms. Allocated memory is still 367.0MB. Free memory was 329.1MB in the beginning and 327.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 13:42:14,777 INFO L158 Benchmark]: RCFGBuilder took 571.33ms. Allocated memory is still 367.0MB. Free memory was 327.8MB in the beginning and 302.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-27 13:42:14,777 INFO L158 Benchmark]: TraceAbstraction took 12682.34ms. Allocated memory was 367.0MB in the beginning and 654.3MB in the end (delta: 287.3MB). Free memory was 301.9MB in the beginning and 508.9MB in the end (delta: -207.1MB). Peak memory consumption was 82.0MB. Max. memory is 16.0GB. [2023-08-27 13:42:14,778 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 367.0MB. Free memory is still 343.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 226.36ms. Allocated memory is still 367.0MB. Free memory was 342.6MB in the beginning and 331.2MB in the end (delta: 11.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.94ms. Allocated memory is still 367.0MB. Free memory was 331.2MB in the beginning and 329.5MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.86ms. Allocated memory is still 367.0MB. Free memory was 329.1MB in the beginning and 327.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 571.33ms. Allocated memory is still 367.0MB. Free memory was 327.8MB in the beginning and 302.6MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * TraceAbstraction took 12682.34ms. Allocated memory was 367.0MB in the beginning and 654.3MB in the end (delta: 287.3MB). Free memory was 301.9MB in the beginning and 508.9MB in the end (delta: -207.1MB). Peak memory consumption was 82.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 126 PlacesBefore, 48 PlacesAfterwards, 118 TransitionsBefore, 38 TransitionsAfterwards, 1390 CoEnabledTransitionPairs, 7 FixpointIterations, 61 TrivialSequentialCompositions, 18 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 85 TotalNumberOfCompositions, 7707 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3506, independent: 3229, independent conditional: 0, independent unconditional: 3229, dependent: 277, dependent conditional: 0, dependent unconditional: 277, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 651, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 37, dependent conditional: 0, dependent unconditional: 37, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3506, independent: 2615, independent conditional: 0, independent unconditional: 2615, dependent: 240, dependent conditional: 0, dependent unconditional: 240, unknown: 651, unknown conditional: 0, unknown unconditional: 651] , Statistics on independence cache: Total cache size (in pairs): 243, Positive cache size: 226, Positive conditional cache size: 0, Positive unconditional cache size: 226, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, 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 - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 168 locations, 28 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: 12.5s, OverallIterations: 22, TraceHistogramMax: 1, PathProgramHistogramMax: 13, EmptinessCheckTime: 0.0s, AutomataDifference: 4.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 672 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 672 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1 mSDsCounter, 173 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3001 IncrementalHoareTripleChecker+Invalid, 3174 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 173 mSolverCounterUnsat, 3 mSDtfsCounter, 3001 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 149 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 131 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=599occurred in iteration=11, InterpolantAutomatonStates: 149, 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, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 399 ConstructedInterpolants, 0 QuantifiedInterpolants, 1347 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 22 InterpolantComputations, 22 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 13 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 13:42:14,800 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...