/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/chl-match-subst.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 12:49:32,125 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 12:49:32,202 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 12:49:32,206 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 12:49:32,206 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 12:49:32,239 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 12:49:32,240 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 12:49:32,240 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 12:49:32,241 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 12:49:32,245 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 12:49:32,245 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 12:49:32,245 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 12:49:32,245 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 12:49:32,246 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 12:49:32,247 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 12:49:32,247 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 12:49:32,247 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 12:49:32,247 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 12:49:32,247 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 12:49:32,248 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 12:49:32,248 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 12:49:32,249 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 12:49:32,249 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 12:49:32,249 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 12:49:32,249 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 12:49:32,250 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 12:49:32,250 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 12:49:32,250 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:49:32,250 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 12:49:32,250 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 12:49:32,251 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 12:49:32,251 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 12:49:32,251 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 12:49:32,251 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 12:49:32,251 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 12:49:32,252 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 12:49:32,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 12:49:32,588 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 12:49:32,590 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 12:49:32,591 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 12:49:32,591 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 12:49:32,592 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-08-27 12:49:33,749 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 12:49:33,971 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 12:49:33,971 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-match-subst.wvr.c [2023-08-27 12:49:33,978 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c96d1a4/856078ef5c29469092917dbcecceace3/FLAG0cb3f7722 [2023-08-27 12:49:33,993 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/41c96d1a4/856078ef5c29469092917dbcecceace3 [2023-08-27 12:49:33,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 12:49:33,999 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 12:49:34,001 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 12:49:34,001 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 12:49:34,004 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 12:49:34,009 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:49:33" (1/1) ... [2023-08-27 12:49:34,010 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e5baac1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34, skipping insertion in model container [2023-08-27 12:49:34,010 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:49:33" (1/1) ... [2023-08-27 12:49:34,035 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 12:49:34,227 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:49:34,237 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 12:49:34,273 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 12:49:34,287 INFO L206 MainTranslator]: Completed translation [2023-08-27 12:49:34,288 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34 WrapperNode [2023-08-27 12:49:34,288 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 12:49:34,289 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 12:49:34,289 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 12:49:34,289 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 12:49:34,295 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,311 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,349 INFO L138 Inliner]: procedures = 23, calls = 35, calls flagged for inlining = 13, calls inlined = 23, statements flattened = 301 [2023-08-27 12:49:34,349 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 12:49:34,350 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 12:49:34,350 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 12:49:34,350 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 12:49:34,359 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,359 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,370 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,370 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,377 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,380 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,381 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,383 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,386 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 12:49:34,387 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 12:49:34,387 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 12:49:34,387 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 12:49:34,388 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (1/1) ... [2023-08-27 12:49:34,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 12:49:34,411 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 12:49:34,420 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 12:49:34,428 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 12:49:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 12:49:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 12:49:34,456 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 12:49:34,456 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 12:49:34,457 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 12:49:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 12:49:34,458 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 12:49:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 12:49:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 12:49:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 12:49:34,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 12:49:34,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 12:49:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 12:49:34,459 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 12:49:34,460 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 12:49:34,569 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 12:49:34,575 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 12:49:35,115 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 12:49:35,132 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 12:49:35,132 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 12:49:35,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:49:35 BoogieIcfgContainer [2023-08-27 12:49:35,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 12:49:35,137 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 12:49:35,137 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 12:49:35,140 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 12:49:35,140 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:49:33" (1/3) ... [2023-08-27 12:49:35,140 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de52e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:49:35, skipping insertion in model container [2023-08-27 12:49:35,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:49:34" (2/3) ... [2023-08-27 12:49:35,141 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5de52e8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:49:35, skipping insertion in model container [2023-08-27 12:49:35,141 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:49:35" (3/3) ... [2023-08-27 12:49:35,142 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-match-subst.wvr.c [2023-08-27 12:49:35,154 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 12:49:35,154 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2023-08-27 12:49:35,154 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 12:49:35,326 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-27 12:49:35,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 372 places, 388 transitions, 800 flow [2023-08-27 12:49:35,502 INFO L124 PetriNetUnfolderBase]: 26/385 cut-off events. [2023-08-27 12:49:35,503 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 12:49:35,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398 conditions, 385 events. 26/385 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 889 event pairs, 0 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 292. Up to 2 conditions per place. [2023-08-27 12:49:35,520 INFO L82 GeneralOperation]: Start removeDead. Operand has 372 places, 388 transitions, 800 flow [2023-08-27 12:49:35,535 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 358 places, 374 transitions, 766 flow [2023-08-27 12:49:35,539 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 12:49:35,550 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 358 places, 374 transitions, 766 flow [2023-08-27 12:49:35,554 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 358 places, 374 transitions, 766 flow [2023-08-27 12:49:35,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 358 places, 374 transitions, 766 flow [2023-08-27 12:49:35,640 INFO L124 PetriNetUnfolderBase]: 26/374 cut-off events. [2023-08-27 12:49:35,640 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-27 12:49:35,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387 conditions, 374 events. 26/374 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 891 event pairs, 0 based on Foata normal form. 0/312 useless extension candidates. Maximal degree in co-relation 292. Up to 2 conditions per place. [2023-08-27 12:49:35,670 INFO L119 LiptonReduction]: Number of co-enabled transitions 56238 [2023-08-27 12:50:07,514 INFO L134 LiptonReduction]: Checked pairs total: 55189 [2023-08-27 12:50:07,514 INFO L136 LiptonReduction]: Total number of compositions: 517 [2023-08-27 12:50:07,526 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 12:50:07,532 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;@38b3e9c7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 12:50:07,532 INFO L358 AbstractCegarLoop]: Starting to check reachability of 76 error locations. [2023-08-27 12:50:07,534 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 12:50:07,535 INFO L124 PetriNetUnfolderBase]: 0/3 cut-off events. [2023-08-27 12:50:07,535 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:07,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:07,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:07,536 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:07,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:07,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1663515, now seen corresponding path program 1 times [2023-08-27 12:50:07,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:07,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062323084] [2023-08-27 12:50:07,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:07,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:07,813 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 12:50:07,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:07,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062323084] [2023-08-27 12:50:07,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062323084] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:07,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:07,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:07,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176250787] [2023-08-27 12:50:07,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:07,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:07,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:07,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:07,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:07,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:07,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:07,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:07,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:07,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:09,228 INFO L124 PetriNetUnfolderBase]: 4173/6176 cut-off events. [2023-08-27 12:50:09,229 INFO L125 PetriNetUnfolderBase]: For 109/109 co-relation queries the response was YES. [2023-08-27 12:50:09,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12640 conditions, 6176 events. 4173/6176 cut-off events. For 109/109 co-relation queries the response was YES. Maximal size of possible extension queue 803. Compared 36009 event pairs, 4173 based on Foata normal form. 0/1794 useless extension candidates. Maximal degree in co-relation 11444. Up to 6176 conditions per place. [2023-08-27 12:50:09,262 INFO L140 encePairwiseOnDemand]: 890/905 looper letters, 37 selfloop transitions, 1 changer transitions 0/38 dead transitions. [2023-08-27 12:50:09,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 38 transitions, 170 flow [2023-08-27 12:50:09,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:09,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1141 transitions. [2023-08-27 12:50:09,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42025782688766117 [2023-08-27 12:50:09,281 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1141 transitions. [2023-08-27 12:50:09,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1141 transitions. [2023-08-27 12:50:09,285 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:09,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1141 transitions. [2023-08-27 12:50:09,291 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 380.3333333333333) internal successors, (1141), 3 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:09,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:09,301 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:09,302 INFO L175 Difference]: Start difference. First operand has 62 places, 52 transitions, 122 flow. Second operand 3 states and 1141 transitions. [2023-08-27 12:50:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 38 transitions, 170 flow [2023-08-27 12:50:09,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 38 transitions, 158 flow, removed 0 selfloop flow, removed 6 redundant places. [2023-08-27 12:50:09,342 INFO L231 Difference]: Finished difference. Result has 44 places, 38 transitions, 84 flow [2023-08-27 12:50:09,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, 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=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=84, PETRI_PLACES=44, PETRI_TRANSITIONS=38} [2023-08-27 12:50:09,347 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -18 predicate places. [2023-08-27 12:50:09,347 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 38 transitions, 84 flow [2023-08-27 12:50:09,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:09,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:09,348 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:09,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 12:50:09,349 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:09,361 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:09,363 INFO L85 PathProgramCache]: Analyzing trace with hash 1663614, now seen corresponding path program 1 times [2023-08-27 12:50:09,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:09,364 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669316384] [2023-08-27 12:50:09,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:09,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 12:50:09,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:09,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669316384] [2023-08-27 12:50:09,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [669316384] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:09,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:09,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:09,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669346733] [2023-08-27 12:50:09,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:09,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:09,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:09,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:09,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:09,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:09,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 38 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:09,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:09,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:09,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:10,469 INFO L124 PetriNetUnfolderBase]: 3363/5002 cut-off events. [2023-08-27 12:50:10,469 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:10,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10089 conditions, 5002 events. 3363/5002 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 642. Compared 28253 event pairs, 3363 based on Foata normal form. 0/1516 useless extension candidates. Maximal degree in co-relation 10083. Up to 5002 conditions per place. [2023-08-27 12:50:10,494 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 35 selfloop transitions, 1 changer transitions 0/36 dead transitions. [2023-08-27 12:50:10,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 36 transitions, 152 flow [2023-08-27 12:50:10,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:10,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:10,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1127 transitions. [2023-08-27 12:50:10,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4151012891344383 [2023-08-27 12:50:10,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1127 transitions. [2023-08-27 12:50:10,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1127 transitions. [2023-08-27 12:50:10,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:10,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1127 transitions. [2023-08-27 12:50:10,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.6666666666667) internal successors, (1127), 3 states have internal predecessors, (1127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:10,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:10,507 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:10,507 INFO L175 Difference]: Start difference. First operand has 44 places, 38 transitions, 84 flow. Second operand 3 states and 1127 transitions. [2023-08-27 12:50:10,507 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 36 transitions, 152 flow [2023-08-27 12:50:10,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 36 transitions, 151 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:10,509 INFO L231 Difference]: Finished difference. Result has 43 places, 36 transitions, 81 flow [2023-08-27 12:50:10,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=43, PETRI_TRANSITIONS=36} [2023-08-27 12:50:10,510 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -19 predicate places. [2023-08-27 12:50:10,510 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 36 transitions, 81 flow [2023-08-27 12:50:10,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:10,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:10,511 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:10,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 12:50:10,511 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:10,512 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:10,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1663616, now seen corresponding path program 1 times [2023-08-27 12:50:10,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:10,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455871735] [2023-08-27 12:50:10,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:10,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:10,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:10,591 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 12:50:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:10,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455871735] [2023-08-27 12:50:10,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455871735] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:10,592 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:10,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:10,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211088176] [2023-08-27 12:50:10,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:10,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:10,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:10,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:10,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:10,595 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:10,596 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 36 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:10,596 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:10,596 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:10,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:11,311 INFO L124 PetriNetUnfolderBase]: 2639/3950 cut-off events. [2023-08-27 12:50:11,311 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:11,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7976 conditions, 3950 events. 2639/3950 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 21607 event pairs, 2639 based on Foata normal form. 0/1260 useless extension candidates. Maximal degree in co-relation 7969. Up to 3950 conditions per place. [2023-08-27 12:50:11,328 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 33 selfloop transitions, 1 changer transitions 0/34 dead transitions. [2023-08-27 12:50:11,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 34 transitions, 145 flow [2023-08-27 12:50:11,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:11,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1125 transitions. [2023-08-27 12:50:11,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4143646408839779 [2023-08-27 12:50:11,332 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1125 transitions. [2023-08-27 12:50:11,332 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1125 transitions. [2023-08-27 12:50:11,333 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:11,333 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1125 transitions. [2023-08-27 12:50:11,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 375.0) internal successors, (1125), 3 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,340 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,342 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,342 INFO L175 Difference]: Start difference. First operand has 43 places, 36 transitions, 81 flow. Second operand 3 states and 1125 transitions. [2023-08-27 12:50:11,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 34 transitions, 145 flow [2023-08-27 12:50:11,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 34 transitions, 144 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:11,343 INFO L231 Difference]: Finished difference. Result has 42 places, 34 transitions, 78 flow [2023-08-27 12:50:11,344 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=78, PETRI_PLACES=42, PETRI_TRANSITIONS=34} [2023-08-27 12:50:11,344 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -20 predicate places. [2023-08-27 12:50:11,344 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 34 transitions, 78 flow [2023-08-27 12:50:11,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,345 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:11,345 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:11,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 12:50:11,346 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:11,346 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:11,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1663613, now seen corresponding path program 1 times [2023-08-27 12:50:11,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:11,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786638984] [2023-08-27 12:50:11,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:11,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:11,384 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 12:50:11,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:11,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786638984] [2023-08-27 12:50:11,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786638984] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:11,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:11,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:11,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821745963] [2023-08-27 12:50:11,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:11,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:11,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:11,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:11,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:11,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:11,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 34 transitions, 78 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:11,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:11,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:11,937 INFO L124 PetriNetUnfolderBase]: 2001/3020 cut-off events. [2023-08-27 12:50:11,937 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:11,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6107 conditions, 3020 events. 2001/3020 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 15833 event pairs, 2001 based on Foata normal form. 0/1026 useless extension candidates. Maximal degree in co-relation 6099. Up to 3020 conditions per place. [2023-08-27 12:50:11,949 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 31 selfloop transitions, 1 changer transitions 0/32 dead transitions. [2023-08-27 12:50:11,949 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 138 flow [2023-08-27 12:50:11,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:11,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:11,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1123 transitions. [2023-08-27 12:50:11,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4136279926335175 [2023-08-27 12:50:11,953 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1123 transitions. [2023-08-27 12:50:11,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1123 transitions. [2023-08-27 12:50:11,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:11,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1123 transitions. [2023-08-27 12:50:11,956 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 374.3333333333333) internal successors, (1123), 3 states have internal predecessors, (1123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,961 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,962 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,963 INFO L175 Difference]: Start difference. First operand has 42 places, 34 transitions, 78 flow. Second operand 3 states and 1123 transitions. [2023-08-27 12:50:11,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 138 flow [2023-08-27 12:50:11,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 32 transitions, 137 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:11,964 INFO L231 Difference]: Finished difference. Result has 41 places, 32 transitions, 75 flow [2023-08-27 12:50:11,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=41, PETRI_TRANSITIONS=32} [2023-08-27 12:50:11,965 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -21 predicate places. [2023-08-27 12:50:11,965 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 32 transitions, 75 flow [2023-08-27 12:50:11,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:11,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:11,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 12:50:11,966 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:11,966 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:11,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1663579, now seen corresponding path program 1 times [2023-08-27 12:50:11,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:11,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104952025] [2023-08-27 12:50:11,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:11,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:11,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:11,991 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 12:50:11,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:11,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104952025] [2023-08-27 12:50:11,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104952025] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:11,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:11,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:11,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394140924] [2023-08-27 12:50:11,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:11,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:11,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:11,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:11,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:11,995 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:11,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 32 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:11,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:11,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:11,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:12,451 INFO L124 PetriNetUnfolderBase]: 1487/2266 cut-off events. [2023-08-27 12:50:12,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:12,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4585 conditions, 2266 events. 1487/2266 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 277. Compared 11367 event pairs, 1487 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 4576. Up to 2266 conditions per place. [2023-08-27 12:50:12,460 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 29 selfloop transitions, 1 changer transitions 0/30 dead transitions. [2023-08-27 12:50:12,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 30 transitions, 131 flow [2023-08-27 12:50:12,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:12,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:12,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1121 transitions. [2023-08-27 12:50:12,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4128913443830571 [2023-08-27 12:50:12,464 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1121 transitions. [2023-08-27 12:50:12,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1121 transitions. [2023-08-27 12:50:12,465 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:12,465 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1121 transitions. [2023-08-27 12:50:12,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.6666666666667) internal successors, (1121), 3 states have internal predecessors, (1121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,474 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,474 INFO L175 Difference]: Start difference. First operand has 41 places, 32 transitions, 75 flow. Second operand 3 states and 1121 transitions. [2023-08-27 12:50:12,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 30 transitions, 131 flow [2023-08-27 12:50:12,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 30 transitions, 130 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:12,475 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 72 flow [2023-08-27 12:50:12,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=72, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-27 12:50:12,476 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -22 predicate places. [2023-08-27 12:50:12,476 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 72 flow [2023-08-27 12:50:12,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:12,477 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:12,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 12:50:12,477 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:12,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:12,478 INFO L85 PathProgramCache]: Analyzing trace with hash 1663581, now seen corresponding path program 1 times [2023-08-27 12:50:12,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:12,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135059685] [2023-08-27 12:50:12,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:12,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:12,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:12,506 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 12:50:12,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:12,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135059685] [2023-08-27 12:50:12,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135059685] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:12,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:12,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:12,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271249501] [2023-08-27 12:50:12,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:12,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:12,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:12,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:12,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:12,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:12,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 72 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:12,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:12,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:12,884 INFO L124 PetriNetUnfolderBase]: 1047/1618 cut-off events. [2023-08-27 12:50:12,884 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:12,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3277 conditions, 1618 events. 1047/1618 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 7707 event pairs, 1047 based on Foata normal form. 0/640 useless extension candidates. Maximal degree in co-relation 3267. Up to 1618 conditions per place. [2023-08-27 12:50:12,891 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 27 selfloop transitions, 1 changer transitions 0/28 dead transitions. [2023-08-27 12:50:12,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 28 transitions, 124 flow [2023-08-27 12:50:12,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:12,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:12,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1119 transitions. [2023-08-27 12:50:12,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4121546961325967 [2023-08-27 12:50:12,894 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1119 transitions. [2023-08-27 12:50:12,894 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1119 transitions. [2023-08-27 12:50:12,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:12,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1119 transitions. [2023-08-27 12:50:12,914 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 373.0) internal successors, (1119), 3 states have internal predecessors, (1119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,919 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,920 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,920 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 72 flow. Second operand 3 states and 1119 transitions. [2023-08-27 12:50:12,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 28 transitions, 124 flow [2023-08-27 12:50:12,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 28 transitions, 123 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:12,921 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 69 flow [2023-08-27 12:50:12,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2023-08-27 12:50:12,922 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -23 predicate places. [2023-08-27 12:50:12,922 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 69 flow [2023-08-27 12:50:12,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:12,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:12,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 12:50:12,924 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:12,924 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:12,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1663582, now seen corresponding path program 1 times [2023-08-27 12:50:12,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:12,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511238968] [2023-08-27 12:50:12,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:12,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:12,967 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 12:50:12,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:12,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511238968] [2023-08-27 12:50:12,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511238968] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:12,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:12,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:12,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138804849] [2023-08-27 12:50:12,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:12,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:12,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:12,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:12,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:12,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:12,971 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:12,971 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:12,971 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:12,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:13,199 INFO L124 PetriNetUnfolderBase]: 681/1076 cut-off events. [2023-08-27 12:50:13,199 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:13,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 1076 events. 681/1076 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 4801 event pairs, 681 based on Foata normal form. 0/480 useless extension candidates. Maximal degree in co-relation 2172. Up to 1076 conditions per place. [2023-08-27 12:50:13,202 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 25 selfloop transitions, 1 changer transitions 0/26 dead transitions. [2023-08-27 12:50:13,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 26 transitions, 117 flow [2023-08-27 12:50:13,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:13,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:13,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1117 transitions. [2023-08-27 12:50:13,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41141804788213626 [2023-08-27 12:50:13,206 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1117 transitions. [2023-08-27 12:50:13,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1117 transitions. [2023-08-27 12:50:13,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:13,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1117 transitions. [2023-08-27 12:50:13,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 372.3333333333333) internal successors, (1117), 3 states have internal predecessors, (1117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,214 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,214 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 69 flow. Second operand 3 states and 1117 transitions. [2023-08-27 12:50:13,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 26 transitions, 117 flow [2023-08-27 12:50:13,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 116 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:13,215 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 66 flow [2023-08-27 12:50:13,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=66, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-27 12:50:13,215 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -24 predicate places. [2023-08-27 12:50:13,216 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 66 flow [2023-08-27 12:50:13,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:13,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 12:50:13,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 12:50:13,217 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:13,217 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:13,217 INFO L85 PathProgramCache]: Analyzing trace with hash 1663591, now seen corresponding path program 1 times [2023-08-27 12:50:13,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:13,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626372356] [2023-08-27 12:50:13,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:13,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:13,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:13,245 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 12:50:13,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:13,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626372356] [2023-08-27 12:50:13,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626372356] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:13,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:13,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:13,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610902257] [2023-08-27 12:50:13,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:13,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:13,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:13,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:13,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:13,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:13,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 66 flow. Second operand has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:13,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:13,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:13,495 INFO L124 PetriNetUnfolderBase]: 405/664 cut-off events. [2023-08-27 12:50:13,495 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:13,496 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 664 events. 405/664 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 2701 event pairs, 405 based on Foata normal form. 0/352 useless extension candidates. Maximal degree in co-relation 1341. Up to 664 conditions per place. [2023-08-27 12:50:13,498 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 23 selfloop transitions, 1 changer transitions 0/24 dead transitions. [2023-08-27 12:50:13,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 24 transitions, 110 flow [2023-08-27 12:50:13,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:13,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:13,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1115 transitions. [2023-08-27 12:50:13,502 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4106813996316759 [2023-08-27 12:50:13,502 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1115 transitions. [2023-08-27 12:50:13,502 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1115 transitions. [2023-08-27 12:50:13,503 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:13,503 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1115 transitions. [2023-08-27 12:50:13,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.6666666666667) internal successors, (1115), 3 states have internal predecessors, (1115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,510 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,510 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 66 flow. Second operand 3 states and 1115 transitions. [2023-08-27 12:50:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 24 transitions, 110 flow [2023-08-27 12:50:13,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 24 transitions, 109 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:13,511 INFO L231 Difference]: Finished difference. Result has 37 places, 24 transitions, 63 flow [2023-08-27 12:50:13,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=63, PETRI_PLACES=37, PETRI_TRANSITIONS=24} [2023-08-27 12:50:13,512 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -25 predicate places. [2023-08-27 12:50:13,512 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 24 transitions, 63 flow [2023-08-27 12:50:13,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.0) internal successors, (1092), 3 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:13,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 12:50:13,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 12:50:13,513 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:13,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:13,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1598583310, now seen corresponding path program 1 times [2023-08-27 12:50:13,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:13,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372597148] [2023-08-27 12:50:13,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:13,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:13,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:13,545 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 12:50:13,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:13,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372597148] [2023-08-27 12:50:13,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372597148] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:13,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:13,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:13,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620385900] [2023-08-27 12:50:13,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:13,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:13,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:13,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:13,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:13,549 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:13,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 24 transitions, 63 flow. Second operand has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:13,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:13,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:13,698 INFO L124 PetriNetUnfolderBase]: 277/464 cut-off events. [2023-08-27 12:50:13,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:13,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 952 conditions, 464 events. 277/464 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 1744 event pairs, 277 based on Foata normal form. 0/266 useless extension candidates. Maximal degree in co-relation 939. Up to 464 conditions per place. [2023-08-27 12:50:13,700 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 21 selfloop transitions, 1 changer transitions 0/22 dead transitions. [2023-08-27 12:50:13,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 22 transitions, 103 flow [2023-08-27 12:50:13,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:13,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1113 transitions. [2023-08-27 12:50:13,704 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40994475138121544 [2023-08-27 12:50:13,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1113 transitions. [2023-08-27 12:50:13,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1113 transitions. [2023-08-27 12:50:13,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:13,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1113 transitions. [2023-08-27 12:50:13,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 371.0) internal successors, (1113), 3 states have internal predecessors, (1113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,711 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,711 INFO L175 Difference]: Start difference. First operand has 37 places, 24 transitions, 63 flow. Second operand 3 states and 1113 transitions. [2023-08-27 12:50:13,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 22 transitions, 103 flow [2023-08-27 12:50:13,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 22 transitions, 102 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:13,712 INFO L231 Difference]: Finished difference. Result has 36 places, 22 transitions, 60 flow [2023-08-27 12:50:13,712 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=60, PETRI_PLACES=36, PETRI_TRANSITIONS=22} [2023-08-27 12:50:13,713 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -26 predicate places. [2023-08-27 12:50:13,713 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 22 transitions, 60 flow [2023-08-27 12:50:13,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:13,714 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 12:50:13,714 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 12:50:13,715 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:13,715 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:13,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1598583330, now seen corresponding path program 1 times [2023-08-27 12:50:13,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:13,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326942211] [2023-08-27 12:50:13,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:13,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:13,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:13,752 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 12:50:13,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:13,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326942211] [2023-08-27 12:50:13,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326942211] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:13,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:13,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:13,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052992530] [2023-08-27 12:50:13,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:13,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:13,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:13,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:13,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:13,757 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:13,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 22 transitions, 60 flow. Second operand has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:13,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:13,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:13,885 INFO L124 PetriNetUnfolderBase]: 173/300 cut-off events. [2023-08-27 12:50:13,885 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:13,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 623 conditions, 300 events. 173/300 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 999 event pairs, 173 based on Foata normal form. 0/192 useless extension candidates. Maximal degree in co-relation 609. Up to 300 conditions per place. [2023-08-27 12:50:13,887 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 19 selfloop transitions, 1 changer transitions 0/20 dead transitions. [2023-08-27 12:50:13,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 20 transitions, 96 flow [2023-08-27 12:50:13,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1111 transitions. [2023-08-27 12:50:13,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40920810313075506 [2023-08-27 12:50:13,891 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1111 transitions. [2023-08-27 12:50:13,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1111 transitions. [2023-08-27 12:50:13,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:13,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1111 transitions. [2023-08-27 12:50:13,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 370.3333333333333) internal successors, (1111), 3 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,897 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,897 INFO L175 Difference]: Start difference. First operand has 36 places, 22 transitions, 60 flow. Second operand 3 states and 1111 transitions. [2023-08-27 12:50:13,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 20 transitions, 96 flow [2023-08-27 12:50:13,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 20 transitions, 95 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:13,899 INFO L231 Difference]: Finished difference. Result has 35 places, 20 transitions, 57 flow [2023-08-27 12:50:13,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=55, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=35, PETRI_TRANSITIONS=20} [2023-08-27 12:50:13,900 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -27 predicate places. [2023-08-27 12:50:13,900 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 20 transitions, 57 flow [2023-08-27 12:50:13,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:13,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 12:50:13,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 12:50:13,901 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:13,901 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:13,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1598583329, now seen corresponding path program 1 times [2023-08-27 12:50:13,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:13,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454696301] [2023-08-27 12:50:13,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:13,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:13,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:13,976 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 12:50:13,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:13,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454696301] [2023-08-27 12:50:13,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [454696301] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:13,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:13,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:13,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376491602] [2023-08-27 12:50:13,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:13,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:13,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:13,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:13,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:13,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:13,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 20 transitions, 57 flow. Second operand has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:13,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:13,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:13,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:14,066 INFO L124 PetriNetUnfolderBase]: 93/172 cut-off events. [2023-08-27 12:50:14,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:14,067 INFO L83 FinitePrefix]: Finished finitePrefix Result has 366 conditions, 172 events. 93/172 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 470 event pairs, 93 based on Foata normal form. 0/130 useless extension candidates. Maximal degree in co-relation 351. Up to 172 conditions per place. [2023-08-27 12:50:14,067 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 17 selfloop transitions, 1 changer transitions 0/18 dead transitions. [2023-08-27 12:50:14,067 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 18 transitions, 89 flow [2023-08-27 12:50:14,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:14,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:14,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1109 transitions. [2023-08-27 12:50:14,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4084714548802947 [2023-08-27 12:50:14,070 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1109 transitions. [2023-08-27 12:50:14,071 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1109 transitions. [2023-08-27 12:50:14,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:14,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1109 transitions. [2023-08-27 12:50:14,073 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.6666666666667) internal successors, (1109), 3 states have internal predecessors, (1109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,077 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,077 INFO L175 Difference]: Start difference. First operand has 35 places, 20 transitions, 57 flow. Second operand 3 states and 1109 transitions. [2023-08-27 12:50:14,077 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 18 transitions, 89 flow [2023-08-27 12:50:14,077 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 18 transitions, 88 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:14,077 INFO L231 Difference]: Finished difference. Result has 34 places, 18 transitions, 54 flow [2023-08-27 12:50:14,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=34, PETRI_TRANSITIONS=18} [2023-08-27 12:50:14,078 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -28 predicate places. [2023-08-27 12:50:14,078 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 18 transitions, 54 flow [2023-08-27 12:50:14,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:14,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 12:50:14,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 12:50:14,079 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:14,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:14,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1598583328, now seen corresponding path program 1 times [2023-08-27 12:50:14,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:14,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474491000] [2023-08-27 12:50:14,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:14,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:14,112 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 12:50:14,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:14,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474491000] [2023-08-27 12:50:14,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474491000] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:14,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:14,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 12:50:14,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897681119] [2023-08-27 12:50:14,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:14,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 12:50:14,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:14,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 12:50:14,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 12:50:14,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 363 out of 905 [2023-08-27 12:50:14,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 18 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:14,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 363 of 905 [2023-08-27 12:50:14,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:14,167 INFO L124 PetriNetUnfolderBase]: 37/80 cut-off events. [2023-08-27 12:50:14,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 12:50:14,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181 conditions, 80 events. 37/80 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 150 event pairs, 37 based on Foata normal form. 0/80 useless extension candidates. Maximal degree in co-relation 165. Up to 80 conditions per place. [2023-08-27 12:50:14,168 INFO L140 encePairwiseOnDemand]: 902/905 looper letters, 15 selfloop transitions, 1 changer transitions 0/16 dead transitions. [2023-08-27 12:50:14,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 16 transitions, 82 flow [2023-08-27 12:50:14,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 12:50:14,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 12:50:14,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1107 transitions. [2023-08-27 12:50:14,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40773480662983425 [2023-08-27 12:50:14,171 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1107 transitions. [2023-08-27 12:50:14,172 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1107 transitions. [2023-08-27 12:50:14,172 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:14,172 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1107 transitions. [2023-08-27 12:50:14,174 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 369.0) internal successors, (1107), 3 states have internal predecessors, (1107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,178 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 905.0) internal successors, (3620), 4 states have internal predecessors, (3620), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,178 INFO L175 Difference]: Start difference. First operand has 34 places, 18 transitions, 54 flow. Second operand 3 states and 1107 transitions. [2023-08-27 12:50:14,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 16 transitions, 82 flow [2023-08-27 12:50:14,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 16 transitions, 81 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:14,178 INFO L231 Difference]: Finished difference. Result has 33 places, 16 transitions, 51 flow [2023-08-27 12:50:14,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=49, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=33, PETRI_TRANSITIONS=16} [2023-08-27 12:50:14,180 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -29 predicate places. [2023-08-27 12:50:14,180 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 16 transitions, 51 flow [2023-08-27 12:50:14,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 364.6666666666667) internal successors, (1094), 3 states have internal predecessors, (1094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:14,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:14,181 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:14,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 12:50:14,181 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:14,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:14,181 INFO L85 PathProgramCache]: Analyzing trace with hash -91180032, now seen corresponding path program 1 times [2023-08-27 12:50:14,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:14,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909618956] [2023-08-27 12:50:14,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:14,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:14,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:18,151 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 12:50:18,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:18,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909618956] [2023-08-27 12:50:18,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909618956] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:18,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:18,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:50:18,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971842455] [2023-08-27 12:50:18,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:18,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:50:18,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:18,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:50:18,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:50:18,154 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 905 [2023-08-27 12:50:18,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 16 transitions, 51 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:18,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:18,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 905 [2023-08-27 12:50:18,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:18,404 INFO L124 PetriNetUnfolderBase]: 40/106 cut-off events. [2023-08-27 12:50:18,404 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-27 12:50:18,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 106 events. 40/106 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 327 event pairs, 6 based on Foata normal form. 1/107 useless extension candidates. Maximal degree in co-relation 218. Up to 48 conditions per place. [2023-08-27 12:50:18,405 INFO L140 encePairwiseOnDemand]: 900/905 looper letters, 30 selfloop transitions, 6 changer transitions 9/45 dead transitions. [2023-08-27 12:50:18,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 45 transitions, 209 flow [2023-08-27 12:50:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:50:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:50:18,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2056 transitions. [2023-08-27 12:50:18,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37863720073664825 [2023-08-27 12:50:18,410 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2056 transitions. [2023-08-27 12:50:18,410 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2056 transitions. [2023-08-27 12:50:18,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:18,411 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2056 transitions. [2023-08-27 12:50:18,415 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.6666666666667) internal successors, (2056), 6 states have internal predecessors, (2056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:18,420 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:18,421 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:18,421 INFO L175 Difference]: Start difference. First operand has 33 places, 16 transitions, 51 flow. Second operand 6 states and 2056 transitions. [2023-08-27 12:50:18,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 45 transitions, 209 flow [2023-08-27 12:50:18,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 45 transitions, 208 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:18,422 INFO L231 Difference]: Finished difference. Result has 40 places, 20 transitions, 83 flow [2023-08-27 12:50:18,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=20} [2023-08-27 12:50:18,423 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -22 predicate places. [2023-08-27 12:50:18,423 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 20 transitions, 83 flow [2023-08-27 12:50:18,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:18,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:18,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:18,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 12:50:18,424 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:18,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:18,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1928562530, now seen corresponding path program 2 times [2023-08-27 12:50:18,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:18,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2309238] [2023-08-27 12:50:18,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:18,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:18,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:20,501 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 12:50:20,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:20,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2309238] [2023-08-27 12:50:20,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2309238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:20,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:20,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:50:20,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015919365] [2023-08-27 12:50:20,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:20,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:50:20,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:20,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:50:20,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:50:20,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 905 [2023-08-27 12:50:20,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 20 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:20,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:20,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 905 [2023-08-27 12:50:20,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:20,748 INFO L124 PetriNetUnfolderBase]: 36/114 cut-off events. [2023-08-27 12:50:20,748 INFO L125 PetriNetUnfolderBase]: For 67/67 co-relation queries the response was YES. [2023-08-27 12:50:20,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330 conditions, 114 events. 36/114 cut-off events. For 67/67 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 403 event pairs, 4 based on Foata normal form. 1/115 useless extension candidates. Maximal degree in co-relation 315. Up to 62 conditions per place. [2023-08-27 12:50:20,749 INFO L140 encePairwiseOnDemand]: 900/905 looper letters, 28 selfloop transitions, 5 changer transitions 10/43 dead transitions. [2023-08-27 12:50:20,749 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 43 transitions, 233 flow [2023-08-27 12:50:20,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:50:20,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:50:20,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2054 transitions. [2023-08-27 12:50:20,754 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37826887661141806 [2023-08-27 12:50:20,754 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2054 transitions. [2023-08-27 12:50:20,755 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2054 transitions. [2023-08-27 12:50:20,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:20,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2054 transitions. [2023-08-27 12:50:20,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.3333333333333) internal successors, (2054), 6 states have internal predecessors, (2054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:20,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:20,766 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:20,766 INFO L175 Difference]: Start difference. First operand has 40 places, 20 transitions, 83 flow. Second operand 6 states and 2054 transitions. [2023-08-27 12:50:20,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 43 transitions, 233 flow [2023-08-27 12:50:20,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 43 transitions, 229 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-27 12:50:20,768 INFO L231 Difference]: Finished difference. Result has 46 places, 20 transitions, 101 flow [2023-08-27 12:50:20,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=101, PETRI_PLACES=46, PETRI_TRANSITIONS=20} [2023-08-27 12:50:20,768 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -16 predicate places. [2023-08-27 12:50:20,768 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 20 transitions, 101 flow [2023-08-27 12:50:20,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:20,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:20,769 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:20,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 12:50:20,769 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:20,769 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:20,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1484629652, now seen corresponding path program 3 times [2023-08-27 12:50:20,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:20,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068768661] [2023-08-27 12:50:20,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:20,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:20,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:23,194 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 12:50:23,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:23,195 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068768661] [2023-08-27 12:50:23,195 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068768661] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:23,195 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:23,195 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:50:23,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505363371] [2023-08-27 12:50:23,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:23,196 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:50:23,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:23,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:50:23,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:50:23,199 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 905 [2023-08-27 12:50:23,200 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 20 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:23,200 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:23,200 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 905 [2023-08-27 12:50:23,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:23,489 INFO L124 PetriNetUnfolderBase]: 20/70 cut-off events. [2023-08-27 12:50:23,490 INFO L125 PetriNetUnfolderBase]: For 105/105 co-relation queries the response was YES. [2023-08-27 12:50:23,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 70 events. 20/70 cut-off events. For 105/105 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 189 event pairs, 0 based on Foata normal form. 1/71 useless extension candidates. Maximal degree in co-relation 229. Up to 23 conditions per place. [2023-08-27 12:50:23,490 INFO L140 encePairwiseOnDemand]: 900/905 looper letters, 27 selfloop transitions, 6 changer transitions 9/42 dead transitions. [2023-08-27 12:50:23,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 245 flow [2023-08-27 12:50:23,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:50:23,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:50:23,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2052 transitions. [2023-08-27 12:50:23,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37790055248618787 [2023-08-27 12:50:23,496 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2052 transitions. [2023-08-27 12:50:23,496 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2052 transitions. [2023-08-27 12:50:23,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:23,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2052 transitions. [2023-08-27 12:50:23,501 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 342.0) internal successors, (2052), 6 states have internal predecessors, (2052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:23,508 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:23,509 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:23,509 INFO L175 Difference]: Start difference. First operand has 46 places, 20 transitions, 101 flow. Second operand 6 states and 2052 transitions. [2023-08-27 12:50:23,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 245 flow [2023-08-27 12:50:23,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 42 transitions, 223 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-08-27 12:50:23,511 INFO L231 Difference]: Finished difference. Result has 47 places, 20 transitions, 103 flow [2023-08-27 12:50:23,512 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=103, PETRI_PLACES=47, PETRI_TRANSITIONS=20} [2023-08-27 12:50:23,512 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -15 predicate places. [2023-08-27 12:50:23,512 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 20 transitions, 103 flow [2023-08-27 12:50:23,513 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:23,513 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:23,513 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:23,513 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 12:50:23,513 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:23,513 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:23,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1351840724, now seen corresponding path program 4 times [2023-08-27 12:50:23,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:23,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970154634] [2023-08-27 12:50:23,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:23,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:26,070 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 12:50:26,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:26,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970154634] [2023-08-27 12:50:26,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970154634] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:26,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:26,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:50:26,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682701222] [2023-08-27 12:50:26,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:26,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:50:26,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:50:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:50:26,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 905 [2023-08-27 12:50:26,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 20 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:26,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:26,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 905 [2023-08-27 12:50:26,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:26,336 INFO L124 PetriNetUnfolderBase]: 15/67 cut-off events. [2023-08-27 12:50:26,336 INFO L125 PetriNetUnfolderBase]: For 62/62 co-relation queries the response was YES. [2023-08-27 12:50:26,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 67 events. 15/67 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 179 event pairs, 0 based on Foata normal form. 1/68 useless extension candidates. Maximal degree in co-relation 221. Up to 41 conditions per place. [2023-08-27 12:50:26,337 INFO L140 encePairwiseOnDemand]: 900/905 looper letters, 18 selfloop transitions, 4 changer transitions 12/34 dead transitions. [2023-08-27 12:50:26,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 34 transitions, 211 flow [2023-08-27 12:50:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:50:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:50:26,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2044 transitions. [2023-08-27 12:50:26,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37642725598526705 [2023-08-27 12:50:26,342 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2044 transitions. [2023-08-27 12:50:26,342 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2044 transitions. [2023-08-27 12:50:26,343 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:26,343 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2044 transitions. [2023-08-27 12:50:26,347 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 340.6666666666667) internal successors, (2044), 6 states have internal predecessors, (2044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:26,351 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:26,352 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:26,352 INFO L175 Difference]: Start difference. First operand has 47 places, 20 transitions, 103 flow. Second operand 6 states and 2044 transitions. [2023-08-27 12:50:26,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 34 transitions, 211 flow [2023-08-27 12:50:26,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 34 transitions, 206 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 12:50:26,354 INFO L231 Difference]: Finished difference. Result has 50 places, 18 transitions, 97 flow [2023-08-27 12:50:26,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=97, PETRI_PLACES=50, PETRI_TRANSITIONS=18} [2023-08-27 12:50:26,354 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -12 predicate places. [2023-08-27 12:50:26,355 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 18 transitions, 97 flow [2023-08-27 12:50:26,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:26,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:26,355 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:26,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-27 12:50:26,355 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:26,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash 260642842, now seen corresponding path program 5 times [2023-08-27 12:50:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212694577] [2023-08-27 12:50:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:28,125 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 12:50:28,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:28,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212694577] [2023-08-27 12:50:28,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212694577] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:28,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:28,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:50:28,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236307569] [2023-08-27 12:50:28,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:28,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:50:28,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:28,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:50:28,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:50:28,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 905 [2023-08-27 12:50:28,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 18 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:28,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:28,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 905 [2023-08-27 12:50:28,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:28,361 INFO L124 PetriNetUnfolderBase]: 7/37 cut-off events. [2023-08-27 12:50:28,361 INFO L125 PetriNetUnfolderBase]: For 45/45 co-relation queries the response was YES. [2023-08-27 12:50:28,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 37 events. 7/37 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 51 event pairs, 0 based on Foata normal form. 1/38 useless extension candidates. Maximal degree in co-relation 131. Up to 14 conditions per place. [2023-08-27 12:50:28,361 INFO L140 encePairwiseOnDemand]: 900/905 looper letters, 17 selfloop transitions, 3 changer transitions 8/28 dead transitions. [2023-08-27 12:50:28,361 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 28 transitions, 177 flow [2023-08-27 12:50:28,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:50:28,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:50:28,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2038 transitions. [2023-08-27 12:50:28,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3753222836095764 [2023-08-27 12:50:28,367 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2038 transitions. [2023-08-27 12:50:28,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2038 transitions. [2023-08-27 12:50:28,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:28,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2038 transitions. [2023-08-27 12:50:28,371 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 339.6666666666667) internal successors, (2038), 6 states have internal predecessors, (2038), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:28,375 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:28,376 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:28,376 INFO L175 Difference]: Start difference. First operand has 50 places, 18 transitions, 97 flow. Second operand 6 states and 2038 transitions. [2023-08-27 12:50:28,377 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 28 transitions, 177 flow [2023-08-27 12:50:28,378 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 28 transitions, 158 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-27 12:50:28,378 INFO L231 Difference]: Finished difference. Result has 46 places, 16 transitions, 71 flow [2023-08-27 12:50:28,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=71, PETRI_PLACES=46, PETRI_TRANSITIONS=16} [2023-08-27 12:50:28,379 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -16 predicate places. [2023-08-27 12:50:28,379 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 16 transitions, 71 flow [2023-08-27 12:50:28,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:28,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 12:50:28,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:28,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-27 12:50:28,380 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 73 more)] === [2023-08-27 12:50:28,380 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 12:50:28,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1010612340, now seen corresponding path program 6 times [2023-08-27 12:50:28,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 12:50:28,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040695948] [2023-08-27 12:50:28,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 12:50:28,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 12:50:28,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 12:50:31,355 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 12:50:31,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 12:50:31,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040695948] [2023-08-27 12:50:31,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040695948] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 12:50:31,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 12:50:31,356 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-27 12:50:31,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368040196] [2023-08-27 12:50:31,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 12:50:31,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 12:50:31,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 12:50:31,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 12:50:31,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-27 12:50:31,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 905 [2023-08-27 12:50:31,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 16 transitions, 71 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:31,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 12:50:31,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 905 [2023-08-27 12:50:31,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 12:50:31,705 INFO L124 PetriNetUnfolderBase]: 5/25 cut-off events. [2023-08-27 12:50:31,706 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-27 12:50:31,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 25 events. 5/25 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 17 event pairs, 0 based on Foata normal form. 1/26 useless extension candidates. Maximal degree in co-relation 92. Up to 10 conditions per place. [2023-08-27 12:50:31,706 INFO L140 encePairwiseOnDemand]: 900/905 looper letters, 0 selfloop transitions, 0 changer transitions 20/20 dead transitions. [2023-08-27 12:50:31,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 20 transitions, 118 flow [2023-08-27 12:50:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 12:50:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 12:50:31,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2031 transitions. [2023-08-27 12:50:31,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37403314917127073 [2023-08-27 12:50:31,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2031 transitions. [2023-08-27 12:50:31,711 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2031 transitions. [2023-08-27 12:50:31,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 12:50:31,712 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2031 transitions. [2023-08-27 12:50:31,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 338.5) internal successors, (2031), 6 states have internal predecessors, (2031), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:31,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:31,720 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 905.0) internal successors, (6335), 7 states have internal predecessors, (6335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:31,720 INFO L175 Difference]: Start difference. First operand has 46 places, 16 transitions, 71 flow. Second operand 6 states and 2031 transitions. [2023-08-27 12:50:31,720 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 20 transitions, 118 flow [2023-08-27 12:50:31,721 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 20 transitions, 105 flow, removed 1 selfloop flow, removed 6 redundant places. [2023-08-27 12:50:31,721 INFO L231 Difference]: Finished difference. Result has 42 places, 0 transitions, 0 flow [2023-08-27 12:50:31,721 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=905, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=37, 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=6, PETRI_FLOW=0, PETRI_PLACES=42, PETRI_TRANSITIONS=0} [2023-08-27 12:50:31,721 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, -20 predicate places. [2023-08-27 12:50:31,722 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 0 transitions, 0 flow [2023-08-27 12:50:31,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 12:50:31,724 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (75 of 76 remaining) [2023-08-27 12:50:31,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (74 of 76 remaining) [2023-08-27 12:50:31,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (73 of 76 remaining) [2023-08-27 12:50:31,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (72 of 76 remaining) [2023-08-27 12:50:31,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (71 of 76 remaining) [2023-08-27 12:50:31,725 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (70 of 76 remaining) [2023-08-27 12:50:31,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (69 of 76 remaining) [2023-08-27 12:50:31,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (68 of 76 remaining) [2023-08-27 12:50:31,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (67 of 76 remaining) [2023-08-27 12:50:31,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (66 of 76 remaining) [2023-08-27 12:50:31,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (65 of 76 remaining) [2023-08-27 12:50:31,726 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (64 of 76 remaining) [2023-08-27 12:50:31,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (63 of 76 remaining) [2023-08-27 12:50:31,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (62 of 76 remaining) [2023-08-27 12:50:31,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (61 of 76 remaining) [2023-08-27 12:50:31,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (60 of 76 remaining) [2023-08-27 12:50:31,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (59 of 76 remaining) [2023-08-27 12:50:31,727 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (58 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (57 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (56 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (55 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (54 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (53 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (52 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (51 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (50 of 76 remaining) [2023-08-27 12:50:31,728 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (49 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (48 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (47 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (46 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (45 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (44 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (43 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (42 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (41 of 76 remaining) [2023-08-27 12:50:31,729 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (40 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (39 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (38 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (37 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (36 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (35 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (34 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (33 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (32 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 76 remaining) [2023-08-27 12:50:31,730 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (29 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread1Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 76 remaining) [2023-08-27 12:50:31,731 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread2Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 76 remaining) [2023-08-27 12:50:31,732 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err4ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err5ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err6ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err7ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err8ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 76 remaining) [2023-08-27 12:50:31,733 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err9ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 76 remaining) [2023-08-27 12:50:31,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err10ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 76 remaining) [2023-08-27 12:50:31,734 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thread3Err11ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 76 remaining) [2023-08-27 12:50:31,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-27 12:50:31,734 INFO L445 BasicCegarLoop]: Path program histogram: [6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 12:50:31,739 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 12:50:31,739 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 12:50:31,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 12:50:31 BasicIcfg [2023-08-27 12:50:31,741 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 12:50:31,742 INFO L158 Benchmark]: Toolchain (without parser) took 57743.23ms. Allocated memory was 350.2MB in the beginning and 1.1GB in the end (delta: 788.5MB). Free memory was 326.7MB in the beginning and 740.8MB in the end (delta: -414.1MB). Peak memory consumption was 377.0MB. Max. memory is 16.0GB. [2023-08-27 12:50:31,742 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 12:50:31,742 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.71ms. Allocated memory is still 350.2MB. Free memory was 326.7MB in the beginning and 315.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-27 12:50:31,742 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.75ms. Allocated memory is still 350.2MB. Free memory was 315.1MB in the beginning and 312.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:50:31,743 INFO L158 Benchmark]: Boogie Preprocessor took 35.95ms. Allocated memory is still 350.2MB. Free memory was 312.3MB in the beginning and 310.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 12:50:31,743 INFO L158 Benchmark]: RCFGBuilder took 748.16ms. Allocated memory is still 350.2MB. Free memory was 310.6MB in the beginning and 282.1MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. [2023-08-27 12:50:31,743 INFO L158 Benchmark]: TraceAbstraction took 56604.61ms. Allocated memory was 350.2MB in the beginning and 1.1GB in the end (delta: 788.5MB). Free memory was 281.2MB in the beginning and 740.8MB in the end (delta: -459.6MB). Peak memory consumption was 330.9MB. Max. memory is 16.0GB. [2023-08-27 12:50:31,744 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 350.2MB. Free memory is still 326.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 286.71ms. Allocated memory is still 350.2MB. Free memory was 326.7MB in the beginning and 315.1MB in the end (delta: 11.6MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.75ms. Allocated memory is still 350.2MB. Free memory was 315.1MB in the beginning and 312.3MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 35.95ms. Allocated memory is still 350.2MB. Free memory was 312.3MB in the beginning and 310.6MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 748.16ms. Allocated memory is still 350.2MB. Free memory was 310.6MB in the beginning and 282.1MB in the end (delta: 28.5MB). Peak memory consumption was 27.3MB. Max. memory is 16.0GB. * TraceAbstraction took 56604.61ms. Allocated memory was 350.2MB in the beginning and 1.1GB in the end (delta: 788.5MB). Free memory was 281.2MB in the beginning and 740.8MB in the end (delta: -459.6MB). Peak memory consumption was 330.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 32.0s, 358 PlacesBefore, 62 PlacesAfterwards, 374 TransitionsBefore, 52 TransitionsAfterwards, 56238 CoEnabledTransitionPairs, 10 FixpointIterations, 73 TrivialSequentialCompositions, 350 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 62 ConcurrentYvCompositions, 26 ChoiceCompositions, 517 TotalNumberOfCompositions, 55189 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 55189, independent: 55189, independent conditional: 0, independent unconditional: 55189, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 32299, independent: 32299, independent conditional: 0, independent unconditional: 32299, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 55189, independent: 22890, independent conditional: 0, independent unconditional: 22890, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 32299, unknown conditional: 0, unknown unconditional: 32299] , Statistics on independence cache: Total cache size (in pairs): 198, Positive cache size: 198, Positive conditional cache size: 0, Positive unconditional cache size: 198, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - 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: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 96]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 97]: 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, 618 locations, 76 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: 56.4s, OverallIterations: 18, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 7.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 32.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 468 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 468 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 732 IncrementalHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 0 mSDtfsCounter, 732 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=122occurred in iteration=0, InterpolantAutomatonStates: 72, 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: 0.0s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 15.6s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 3081 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 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 37 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 12:50:31,764 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...