/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 -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/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 01:51:58,007 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 01:51:58,091 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 01:51:58,095 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 01:51:58,096 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 01:51:58,118 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 01:51:58,118 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 01:51:58,119 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 01:51:58,119 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 01:51:58,123 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 01:51:58,123 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 01:51:58,123 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 01:51:58,124 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 01:51:58,125 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 01:51:58,125 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 01:51:58,125 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 01:51:58,125 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 01:51:58,126 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 01:51:58,126 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 01:51:58,126 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 01:51:58,126 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 01:51:58,127 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 01:51:58,127 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 01:51:58,128 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 01:51:58,128 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 01:51:58,128 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 01:51:58,129 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 01:51:58,129 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:51:58,129 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 01:51:58,129 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 01:51:58,130 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 01:51:58,130 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 01:51:58,131 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 01:51:58,131 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 01:51:58,131 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 01:51:58,131 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 01:51:58,453 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 01:51:58,478 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 01:51:58,480 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 01:51:58,481 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 01:51:58,481 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 01:51:58,482 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-27 01:51:59,712 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 01:51:59,925 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 01:51:59,926 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-27 01:51:59,934 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b4b5879b/331613a8a41349e4a140b2db809dbdb6/FLAG1bf33361a [2023-08-27 01:51:59,948 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0b4b5879b/331613a8a41349e4a140b2db809dbdb6 [2023-08-27 01:51:59,953 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 01:51:59,954 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 01:51:59,958 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 01:51:59,958 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 01:51:59,960 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 01:51:59,962 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:51:59" (1/1) ... [2023-08-27 01:51:59,963 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b059ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:51:59, skipping insertion in model container [2023-08-27 01:51:59,963 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 01:51:59" (1/1) ... [2023-08-27 01:51:59,985 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 01:52:00,140 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:52:00,147 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 01:52:00,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 01:52:00,188 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:52:00,189 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 01:52:00,194 INFO L206 MainTranslator]: Completed translation [2023-08-27 01:52:00,195 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00 WrapperNode [2023-08-27 01:52:00,195 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 01:52:00,196 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 01:52:00,196 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 01:52:00,196 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 01:52:00,202 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,209 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,229 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 147 [2023-08-27 01:52:00,229 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 01:52:00,230 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 01:52:00,230 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 01:52:00,230 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 01:52:00,239 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,240 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,252 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,253 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,258 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,281 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,282 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,285 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 01:52:00,285 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 01:52:00,286 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 01:52:00,286 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 01:52:00,286 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (1/1) ... [2023-08-27 01:52:00,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 01:52:00,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:52:00,322 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 01:52:00,324 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 01:52:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 01:52:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 01:52:00,350 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 01:52:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 01:52:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 01:52:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 01:52:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 01:52:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 01:52:00,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 01:52:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 01:52:00,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 01:52:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 01:52:00,355 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 01:52:00,450 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 01:52:00,452 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 01:52:00,807 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 01:52:00,926 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 01:52:00,927 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 01:52:00,929 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:52:00 BoogieIcfgContainer [2023-08-27 01:52:00,929 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 01:52:00,931 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 01:52:00,931 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 01:52:00,934 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 01:52:00,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 01:51:59" (1/3) ... [2023-08-27 01:52:00,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34410c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:52:00, skipping insertion in model container [2023-08-27 01:52:00,935 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 01:52:00" (2/3) ... [2023-08-27 01:52:00,935 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34410c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 01:52:00, skipping insertion in model container [2023-08-27 01:52:00,936 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 01:52:00" (3/3) ... [2023-08-27 01:52:00,937 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-08-27 01:52:00,949 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 01:52:00,949 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 01:52:00,949 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 01:52:01,064 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 01:52:01,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 145 transitions, 322 flow [2023-08-27 01:52:01,138 INFO L124 PetriNetUnfolderBase]: 10/141 cut-off events. [2023-08-27 01:52:01,139 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:52:01,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 141 events. 10/141 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 127 event pairs, 0 based on Foata normal form. 0/114 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-27 01:52:01,144 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 145 transitions, 322 flow [2023-08-27 01:52:01,148 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 131 places, 128 transitions, 280 flow [2023-08-27 01:52:01,151 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 01:52:01,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 131 places, 128 transitions, 280 flow [2023-08-27 01:52:01,161 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 131 places, 128 transitions, 280 flow [2023-08-27 01:52:01,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 128 transitions, 280 flow [2023-08-27 01:52:01,191 INFO L124 PetriNetUnfolderBase]: 10/128 cut-off events. [2023-08-27 01:52:01,191 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 01:52:01,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145 conditions, 128 events. 10/128 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 126 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2023-08-27 01:52:01,194 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-27 01:52:05,791 INFO L134 LiptonReduction]: Checked pairs total: 3394 [2023-08-27 01:52:05,791 INFO L136 LiptonReduction]: Total number of compositions: 113 [2023-08-27 01:52:05,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 01:52:05,806 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;@6696bb1d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 01:52:05,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 01:52:05,808 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 01:52:05,809 INFO L124 PetriNetUnfolderBase]: 1/3 cut-off events. [2023-08-27 01:52:05,809 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 01:52:05,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:05,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:52:05,810 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:05,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:05,814 INFO L85 PathProgramCache]: Analyzing trace with hash 643606, now seen corresponding path program 1 times [2023-08-27 01:52:05,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:05,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575073146] [2023-08-27 01:52:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:05,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:06,103 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 01:52:06,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:06,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575073146] [2023-08-27 01:52:06,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575073146] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:52:06,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:52:06,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:52:06,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253182459] [2023-08-27 01:52:06,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:52:06,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:52:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:06,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:52:06,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:52:06,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:52:06,136 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:06,136 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:06,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:52:06,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:07,570 INFO L124 PetriNetUnfolderBase]: 14581/19046 cut-off events. [2023-08-27 01:52:07,570 INFO L125 PetriNetUnfolderBase]: For 928/928 co-relation queries the response was YES. [2023-08-27 01:52:07,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39192 conditions, 19046 events. 14581/19046 cut-off events. For 928/928 co-relation queries the response was YES. Maximal size of possible extension queue 1345. Compared 97779 event pairs, 4697 based on Foata normal form. 0/6038 useless extension candidates. Maximal degree in co-relation 33200. Up to 11519 conditions per place. [2023-08-27 01:52:07,763 INFO L140 encePairwiseOnDemand]: 252/258 looper letters, 72 selfloop transitions, 2 changer transitions 0/74 dead transitions. [2023-08-27 01:52:07,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 74 transitions, 341 flow [2023-08-27 01:52:07,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:52:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:52:07,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 401 transitions. [2023-08-27 01:52:07,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5180878552971576 [2023-08-27 01:52:07,775 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 401 transitions. [2023-08-27 01:52:07,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 401 transitions. [2023-08-27 01:52:07,777 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:07,779 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 401 transitions. [2023-08-27 01:52:07,781 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.66666666666666) internal successors, (401), 3 states have internal predecessors, (401), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:07,785 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:07,786 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:07,788 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 3 states and 401 transitions. [2023-08-27 01:52:07,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 74 transitions, 341 flow [2023-08-27 01:52:07,807 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 74 transitions, 311 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 01:52:07,809 INFO L231 Difference]: Finished difference. Result has 43 places, 40 transitions, 100 flow [2023-08-27 01:52:07,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=100, PETRI_PLACES=43, PETRI_TRANSITIONS=40} [2023-08-27 01:52:07,814 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -7 predicate places. [2023-08-27 01:52:07,814 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 40 transitions, 100 flow [2023-08-27 01:52:07,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 108.0) internal successors, (324), 3 states have internal predecessors, (324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:07,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:07,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-27 01:52:07,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 01:52:07,815 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:07,816 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:07,816 INFO L85 PathProgramCache]: Analyzing trace with hash 643603, now seen corresponding path program 1 times [2023-08-27 01:52:07,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:07,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1614291069] [2023-08-27 01:52:07,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:07,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:07,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:07,909 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 01:52:07,909 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:07,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1614291069] [2023-08-27 01:52:07,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1614291069] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:52:07,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:52:07,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:52:07,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1574300127] [2023-08-27 01:52:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:52:07,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:52:07,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:07,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:52:07,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:52:07,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 01:52:07,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 40 transitions, 100 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:07,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:07,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 01:52:07,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:09,171 INFO L124 PetriNetUnfolderBase]: 14747/19253 cut-off events. [2023-08-27 01:52:09,172 INFO L125 PetriNetUnfolderBase]: For 1060/1060 co-relation queries the response was YES. [2023-08-27 01:52:09,196 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40758 conditions, 19253 events. 14747/19253 cut-off events. For 1060/1060 co-relation queries the response was YES. Maximal size of possible extension queue 1312. Compared 95624 event pairs, 6183 based on Foata normal form. 1/6938 useless extension candidates. Maximal degree in co-relation 15567. Up to 19047 conditions per place. [2023-08-27 01:52:09,279 INFO L140 encePairwiseOnDemand]: 240/258 looper letters, 54 selfloop transitions, 5 changer transitions 3/62 dead transitions. [2023-08-27 01:52:09,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 62 transitions, 278 flow [2023-08-27 01:52:09,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:52:09,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:52:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 398 transitions. [2023-08-27 01:52:09,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142118863049095 [2023-08-27 01:52:09,282 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 398 transitions. [2023-08-27 01:52:09,282 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 398 transitions. [2023-08-27 01:52:09,282 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:09,282 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 398 transitions. [2023-08-27 01:52:09,283 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:09,285 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:09,286 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:09,286 INFO L175 Difference]: Start difference. First operand has 43 places, 40 transitions, 100 flow. Second operand 3 states and 398 transitions. [2023-08-27 01:52:09,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 62 transitions, 278 flow [2023-08-27 01:52:09,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 62 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:52:09,288 INFO L231 Difference]: Finished difference. Result has 45 places, 44 transitions, 157 flow [2023-08-27 01:52:09,289 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=45, PETRI_TRANSITIONS=44} [2023-08-27 01:52:09,289 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -5 predicate places. [2023-08-27 01:52:09,289 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 44 transitions, 157 flow [2023-08-27 01:52:09,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:09,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:09,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 01:52:09,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 01:52:09,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:09,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:09,291 INFO L85 PathProgramCache]: Analyzing trace with hash 19952358, now seen corresponding path program 1 times [2023-08-27 01:52:09,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:09,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919689487] [2023-08-27 01:52:09,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:09,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:09,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:09,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:09,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919689487] [2023-08-27 01:52:09,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919689487] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:52:09,356 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1809845608] [2023-08-27 01:52:09,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:09,356 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:09,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:52:09,363 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:52:09,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-27 01:52:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:09,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:52:09,491 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:52:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:09,522 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:52:09,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1809845608] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:52:09,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:52:09,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 01:52:09,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1407612414] [2023-08-27 01:52:09,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:52:09,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:52:09,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:09,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:52:09,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:52:09,529 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:52:09,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 44 transitions, 157 flow. Second operand has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:09,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:09,530 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:52:09,530 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:10,886 INFO L124 PetriNetUnfolderBase]: 13495/17629 cut-off events. [2023-08-27 01:52:10,886 INFO L125 PetriNetUnfolderBase]: For 2118/2118 co-relation queries the response was YES. [2023-08-27 01:52:10,908 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47980 conditions, 17629 events. 13495/17629 cut-off events. For 2118/2118 co-relation queries the response was YES. Maximal size of possible extension queue 1139. Compared 84616 event pairs, 7763 based on Foata normal form. 0/9415 useless extension candidates. Maximal degree in co-relation 20652. Up to 11129 conditions per place. [2023-08-27 01:52:10,976 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 74 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-27 01:52:10,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 77 transitions, 414 flow [2023-08-27 01:52:10,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:52:10,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:52:10,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 502 transitions. [2023-08-27 01:52:10,978 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48643410852713176 [2023-08-27 01:52:10,978 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 502 transitions. [2023-08-27 01:52:10,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 502 transitions. [2023-08-27 01:52:10,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:10,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 502 transitions. [2023-08-27 01:52:10,980 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 125.5) internal successors, (502), 4 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:10,982 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:10,983 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:10,983 INFO L175 Difference]: Start difference. First operand has 45 places, 44 transitions, 157 flow. Second operand 4 states and 502 transitions. [2023-08-27 01:52:10,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 77 transitions, 414 flow [2023-08-27 01:52:10,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 77 transitions, 409 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:52:10,987 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 154 flow [2023-08-27 01:52:10,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 01:52:10,988 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-27 01:52:10,988 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 154 flow [2023-08-27 01:52:10,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:10,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:10,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 01:52:11,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-27 01:52:11,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:11,197 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:11,198 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:11,198 INFO L85 PathProgramCache]: Analyzing trace with hash 19952359, now seen corresponding path program 1 times [2023-08-27 01:52:11,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:11,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469305196] [2023-08-27 01:52:11,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:11,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:11,240 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:11,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469305196] [2023-08-27 01:52:11,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [469305196] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:52:11,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1437349584] [2023-08-27 01:52:11,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:11,241 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:11,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:52:11,242 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:52:11,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-27 01:52:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:11,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:52:11,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:52:11,346 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:11,346 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:52:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1437349584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:52:11,365 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:52:11,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:52:11,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275832244] [2023-08-27 01:52:11,365 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:52:11,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:52:11,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:11,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:52:11,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:52:11,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:52:11,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 154 flow. Second operand has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:11,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:11,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:52:11,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:13,580 INFO L124 PetriNetUnfolderBase]: 31609/41323 cut-off events. [2023-08-27 01:52:13,580 INFO L125 PetriNetUnfolderBase]: For 4935/4935 co-relation queries the response was YES. [2023-08-27 01:52:13,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111944 conditions, 41323 events. 31609/41323 cut-off events. For 4935/4935 co-relation queries the response was YES. Maximal size of possible extension queue 2067. Compared 227549 event pairs, 7121 based on Foata normal form. 0/22363 useless extension candidates. Maximal degree in co-relation 25840. Up to 25904 conditions per place. [2023-08-27 01:52:13,785 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 176 selfloop transitions, 6 changer transitions 0/182 dead transitions. [2023-08-27 01:52:13,786 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 182 transitions, 958 flow [2023-08-27 01:52:13,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:52:13,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:52:13,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 823 transitions. [2023-08-27 01:52:13,789 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5316537467700259 [2023-08-27 01:52:13,789 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 823 transitions. [2023-08-27 01:52:13,789 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 823 transitions. [2023-08-27 01:52:13,790 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:13,790 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 823 transitions. [2023-08-27 01:52:13,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.16666666666666) internal successors, (823), 6 states have internal predecessors, (823), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:13,794 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:13,795 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:13,795 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 154 flow. Second operand 6 states and 823 transitions. [2023-08-27 01:52:13,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 182 transitions, 958 flow [2023-08-27 01:52:13,798 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 182 transitions, 954 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:52:13,801 INFO L231 Difference]: Finished difference. Result has 52 places, 46 transitions, 189 flow [2023-08-27 01:52:13,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=189, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2023-08-27 01:52:13,806 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 2 predicate places. [2023-08-27 01:52:13,806 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 189 flow [2023-08-27 01:52:13,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 108.57142857142857) internal successors, (760), 7 states have internal predecessors, (760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:13,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:13,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 01:52:13,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-27 01:52:14,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 01:52:14,020 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:14,020 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:14,020 INFO L85 PathProgramCache]: Analyzing trace with hash 19952356, now seen corresponding path program 1 times [2023-08-27 01:52:14,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:14,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242131444] [2023-08-27 01:52:14,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:14,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:14,076 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:14,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:14,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242131444] [2023-08-27 01:52:14,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242131444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:52:14,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:52:14,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 01:52:14,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482908898] [2023-08-27 01:52:14,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:52:14,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:52:14,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:14,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:52:14,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:52:14,078 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 01:52:14,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 46 transitions, 189 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:14,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:14,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 01:52:14,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:15,531 INFO L124 PetriNetUnfolderBase]: 21241/27847 cut-off events. [2023-08-27 01:52:15,531 INFO L125 PetriNetUnfolderBase]: For 14284/14284 co-relation queries the response was YES. [2023-08-27 01:52:15,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78283 conditions, 27847 events. 21241/27847 cut-off events. For 14284/14284 co-relation queries the response was YES. Maximal size of possible extension queue 1301. Compared 137824 event pairs, 16543 based on Foata normal form. 0/16957 useless extension candidates. Maximal degree in co-relation 62741. Up to 27847 conditions per place. [2023-08-27 01:52:15,658 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 43 selfloop transitions, 1 changer transitions 0/44 dead transitions. [2023-08-27 01:52:15,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 44 transitions, 269 flow [2023-08-27 01:52:15,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:52:15,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:52:15,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-27 01:52:15,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46770025839793283 [2023-08-27 01:52:15,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-27 01:52:15,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-27 01:52:15,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:15,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-27 01:52:15,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:15,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:15,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:15,663 INFO L175 Difference]: Start difference. First operand has 52 places, 46 transitions, 189 flow. Second operand 3 states and 362 transitions. [2023-08-27 01:52:15,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 44 transitions, 269 flow [2023-08-27 01:52:15,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 44 transitions, 260 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 01:52:15,669 INFO L231 Difference]: Finished difference. Result has 51 places, 44 transitions, 174 flow [2023-08-27 01:52:15,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=51, PETRI_TRANSITIONS=44} [2023-08-27 01:52:15,670 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 1 predicate places. [2023-08-27 01:52:15,670 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 44 transitions, 174 flow [2023-08-27 01:52:15,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:15,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:15,671 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 01:52:15,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 01:52:15,671 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:15,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:15,671 INFO L85 PathProgramCache]: Analyzing trace with hash 19952357, now seen corresponding path program 1 times [2023-08-27 01:52:15,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:15,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895511619] [2023-08-27 01:52:15,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:15,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:15,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:15,735 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:15,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:15,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895511619] [2023-08-27 01:52:15,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895511619] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:52:15,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [987402718] [2023-08-27 01:52:15,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:15,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:15,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:52:15,737 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:52:15,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 01:52:15,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:15,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:52:15,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:52:15,822 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:15,822 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:52:15,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:15,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [987402718] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:52:15,838 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:52:15,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:52:15,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018753320] [2023-08-27 01:52:15,839 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:52:15,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:52:15,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:15,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:52:15,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:52:15,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 01:52:15,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 44 transitions, 174 flow. Second operand has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:15,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:15,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 01:52:15,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:19,633 INFO L124 PetriNetUnfolderBase]: 51043/68220 cut-off events. [2023-08-27 01:52:19,633 INFO L125 PetriNetUnfolderBase]: For 24808/24808 co-relation queries the response was YES. [2023-08-27 01:52:19,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187545 conditions, 68220 events. 51043/68220 cut-off events. For 24808/24808 co-relation queries the response was YES. Maximal size of possible extension queue 2971. Compared 414760 event pairs, 7649 based on Foata normal form. 4491/49699 useless extension candidates. Maximal degree in co-relation 187531. Up to 35227 conditions per place. [2023-08-27 01:52:19,941 INFO L140 encePairwiseOnDemand]: 241/258 looper letters, 119 selfloop transitions, 53 changer transitions 1/173 dead transitions. [2023-08-27 01:52:19,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 173 transitions, 992 flow [2023-08-27 01:52:19,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:52:19,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:52:19,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 820 transitions. [2023-08-27 01:52:19,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5297157622739018 [2023-08-27 01:52:19,944 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 820 transitions. [2023-08-27 01:52:19,944 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 820 transitions. [2023-08-27 01:52:19,944 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:19,944 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 820 transitions. [2023-08-27 01:52:19,946 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 136.66666666666666) internal successors, (820), 6 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:19,948 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:19,948 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:19,948 INFO L175 Difference]: Start difference. First operand has 51 places, 44 transitions, 174 flow. Second operand 6 states and 820 transitions. [2023-08-27 01:52:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 173 transitions, 992 flow [2023-08-27 01:52:19,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 173 transitions, 991 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:52:19,983 INFO L231 Difference]: Finished difference. Result has 59 places, 92 transitions, 727 flow [2023-08-27 01:52:19,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=727, PETRI_PLACES=59, PETRI_TRANSITIONS=92} [2023-08-27 01:52:19,984 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 9 predicate places. [2023-08-27 01:52:19,984 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 92 transitions, 727 flow [2023-08-27 01:52:19,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 109.57142857142857) internal successors, (767), 7 states have internal predecessors, (767), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:19,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:19,985 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-27 01:52:19,992 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 01:52:20,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:20,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:20,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:20,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1996355444, now seen corresponding path program 1 times [2023-08-27 01:52:20,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:20,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916207095] [2023-08-27 01:52:20,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:20,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:20,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:20,223 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 01:52:20,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:20,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916207095] [2023-08-27 01:52:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916207095] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:52:20,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:52:20,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:52:20,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651729274] [2023-08-27 01:52:20,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:52:20,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:52:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:52:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:52:20,225 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:52:20,225 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 92 transitions, 727 flow. Second operand has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:20,225 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:20,225 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:52:20,226 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:26,981 INFO L124 PetriNetUnfolderBase]: 78213/104525 cut-off events. [2023-08-27 01:52:26,981 INFO L125 PetriNetUnfolderBase]: For 128624/128624 co-relation queries the response was YES. [2023-08-27 01:52:27,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 429354 conditions, 104525 events. 78213/104525 cut-off events. For 128624/128624 co-relation queries the response was YES. Maximal size of possible extension queue 4500. Compared 665616 event pairs, 20641 based on Foata normal form. 0/77829 useless extension candidates. Maximal degree in co-relation 429335. Up to 70658 conditions per place. [2023-08-27 01:52:27,619 INFO L140 encePairwiseOnDemand]: 254/258 looper letters, 166 selfloop transitions, 4 changer transitions 0/170 dead transitions. [2023-08-27 01:52:27,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 170 transitions, 1686 flow [2023-08-27 01:52:27,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:52:27,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:52:27,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 389 transitions. [2023-08-27 01:52:27,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5025839793281653 [2023-08-27 01:52:27,621 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 389 transitions. [2023-08-27 01:52:27,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 389 transitions. [2023-08-27 01:52:27,621 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:27,621 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 389 transitions. [2023-08-27 01:52:27,622 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:27,623 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:27,623 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:27,623 INFO L175 Difference]: Start difference. First operand has 59 places, 92 transitions, 727 flow. Second operand 3 states and 389 transitions. [2023-08-27 01:52:27,623 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 170 transitions, 1686 flow [2023-08-27 01:52:29,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 170 transitions, 1686 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 01:52:29,049 INFO L231 Difference]: Finished difference. Result has 62 places, 95 transitions, 783 flow [2023-08-27 01:52:29,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=727, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=783, PETRI_PLACES=62, PETRI_TRANSITIONS=95} [2023-08-27 01:52:29,049 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 12 predicate places. [2023-08-27 01:52:29,050 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 95 transitions, 783 flow [2023-08-27 01:52:29,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:29,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:29,050 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 01:52:29,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 01:52:29,050 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:29,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:29,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1695809110, now seen corresponding path program 2 times [2023-08-27 01:52:29,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:29,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472711695] [2023-08-27 01:52:29,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:29,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:29,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:29,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472711695] [2023-08-27 01:52:29,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472711695] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:52:29,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1121201739] [2023-08-27 01:52:29,112 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:52:29,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:29,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:52:29,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:52:29,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 01:52:29,178 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 01:52:29,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:52:29,179 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-27 01:52:29,180 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:52:29,207 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 01:52:29,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:52:29,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1121201739] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:52:29,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:52:29,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [5] total 6 [2023-08-27 01:52:29,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216200238] [2023-08-27 01:52:29,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:52:29,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:52:29,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:29,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:52:29,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 01:52:29,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 258 [2023-08-27 01:52:29,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 95 transitions, 783 flow. Second operand has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:29,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:29,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 258 [2023-08-27 01:52:29,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:35,477 INFO L124 PetriNetUnfolderBase]: 73705/98591 cut-off events. [2023-08-27 01:52:35,478 INFO L125 PetriNetUnfolderBase]: For 175023/175023 co-relation queries the response was YES. [2023-08-27 01:52:35,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414298 conditions, 98591 events. 73705/98591 cut-off events. For 175023/175023 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 610292 event pairs, 47991 based on Foata normal form. 1426/74785 useless extension candidates. Maximal degree in co-relation 414276. Up to 98591 conditions per place. [2023-08-27 01:52:36,252 INFO L140 encePairwiseOnDemand]: 256/258 looper letters, 89 selfloop transitions, 1 changer transitions 0/90 dead transitions. [2023-08-27 01:52:36,252 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 90 transitions, 896 flow [2023-08-27 01:52:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:52:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:52:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 351 transitions. [2023-08-27 01:52:36,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45348837209302323 [2023-08-27 01:52:36,254 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 351 transitions. [2023-08-27 01:52:36,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 351 transitions. [2023-08-27 01:52:36,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:36,254 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 351 transitions. [2023-08-27 01:52:36,255 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.0) internal successors, (351), 3 states have internal predecessors, (351), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:36,256 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:36,256 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:36,256 INFO L175 Difference]: Start difference. First operand has 62 places, 95 transitions, 783 flow. Second operand 3 states and 351 transitions. [2023-08-27 01:52:36,256 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 90 transitions, 896 flow [2023-08-27 01:52:37,039 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 90 transitions, 844 flow, removed 5 selfloop flow, removed 5 redundant places. [2023-08-27 01:52:37,041 INFO L231 Difference]: Finished difference. Result has 58 places, 90 transitions, 666 flow [2023-08-27 01:52:37,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=664, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=666, PETRI_PLACES=58, PETRI_TRANSITIONS=90} [2023-08-27 01:52:37,042 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 8 predicate places. [2023-08-27 01:52:37,042 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 90 transitions, 666 flow [2023-08-27 01:52:37,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.33333333333333) internal successors, (319), 3 states have internal predecessors, (319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:37,042 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:52:37,043 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1] [2023-08-27 01:52:37,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-27 01:52:37,245 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:37,245 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:52:37,246 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:52:37,246 INFO L85 PathProgramCache]: Analyzing trace with hash 1695809108, now seen corresponding path program 2 times [2023-08-27 01:52:37,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:52:37,246 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615938460] [2023-08-27 01:52:37,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:52:37,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:52:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:52:37,322 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:37,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:52:37,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615938460] [2023-08-27 01:52:37,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615938460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:52:37,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1410561903] [2023-08-27 01:52:37,323 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 01:52:37,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:52:37,323 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:52:37,324 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:52:37,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 01:52:37,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 01:52:37,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 01:52:37,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 01:52:37,398 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:52:37,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:37,415 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:52:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:52:37,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1410561903] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:52:37,467 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:52:37,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 01:52:37,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511810568] [2023-08-27 01:52:37,468 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:52:37,468 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 01:52:37,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:52:37,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 01:52:37,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 01:52:37,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 258 [2023-08-27 01:52:37,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 90 transitions, 666 flow. Second operand has 13 states, 13 states have (on average 109.3076923076923) internal successors, (1421), 13 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:37,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:52:37,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 258 [2023-08-27 01:52:37,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:52:56,501 INFO L124 PetriNetUnfolderBase]: 225857/302683 cut-off events. [2023-08-27 01:52:56,501 INFO L125 PetriNetUnfolderBase]: For 727180/727180 co-relation queries the response was YES. [2023-08-27 01:52:57,220 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1186997 conditions, 302683 events. 225857/302683 cut-off events. For 727180/727180 co-relation queries the response was YES. Maximal size of possible extension queue 9602. Compared 2109855 event pairs, 21031 based on Foata normal form. 43720/262819 useless extension candidates. Maximal degree in co-relation 1186978. Up to 147597 conditions per place. [2023-08-27 01:52:58,485 INFO L140 encePairwiseOnDemand]: 242/258 looper letters, 234 selfloop transitions, 233 changer transitions 1/468 dead transitions. [2023-08-27 01:52:58,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 468 transitions, 3678 flow [2023-08-27 01:52:58,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 01:52:58,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 01:52:58,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1661 transitions. [2023-08-27 01:52:58,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536498708010336 [2023-08-27 01:52:58,491 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1661 transitions. [2023-08-27 01:52:58,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1661 transitions. [2023-08-27 01:52:58,492 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:52:58,492 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1661 transitions. [2023-08-27 01:52:58,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 138.41666666666666) internal successors, (1661), 12 states have internal predecessors, (1661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:58,499 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:58,500 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 258.0) internal successors, (3354), 13 states have internal predecessors, (3354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:52:58,500 INFO L175 Difference]: Start difference. First operand has 58 places, 90 transitions, 666 flow. Second operand 12 states and 1661 transitions. [2023-08-27 01:52:58,500 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 468 transitions, 3678 flow [2023-08-27 01:53:00,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 468 transitions, 3677 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:53:00,035 INFO L231 Difference]: Finished difference. Result has 78 places, 279 transitions, 3306 flow [2023-08-27 01:53:00,035 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=665, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3306, PETRI_PLACES=78, PETRI_TRANSITIONS=279} [2023-08-27 01:53:00,036 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 28 predicate places. [2023-08-27 01:53:00,036 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 279 transitions, 3306 flow [2023-08-27 01:53:00,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 109.3076923076923) internal successors, (1421), 13 states have internal predecessors, (1421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:53:00,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:53:00,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:53:00,043 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-27 01:53:00,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:53:00,241 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:53:00,242 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:53:00,242 INFO L85 PathProgramCache]: Analyzing trace with hash 1757535646, now seen corresponding path program 1 times [2023-08-27 01:53:00,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:53:00,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537089573] [2023-08-27 01:53:00,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:53:00,242 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:53:00,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:53:00,277 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 01:53:00,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:53:00,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537089573] [2023-08-27 01:53:00,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537089573] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:53:00,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 01:53:00,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 01:53:00,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425109811] [2023-08-27 01:53:00,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:53:00,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 01:53:00,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:53:00,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 01:53:00,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 01:53:00,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:53:00,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 279 transitions, 3306 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:53:00,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:53:00,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:53:00,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:53:30,792 INFO L124 PetriNetUnfolderBase]: 258373/346617 cut-off events. [2023-08-27 01:53:30,792 INFO L125 PetriNetUnfolderBase]: For 981383/981383 co-relation queries the response was YES. [2023-08-27 01:53:32,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775093 conditions, 346617 events. 258373/346617 cut-off events. For 981383/981383 co-relation queries the response was YES. Maximal size of possible extension queue 10992. Compared 2467005 event pairs, 39399 based on Foata normal form. 0/256521 useless extension candidates. Maximal degree in co-relation 1775063. Up to 305391 conditions per place. [2023-08-27 01:53:33,903 INFO L140 encePairwiseOnDemand]: 254/258 looper letters, 426 selfloop transitions, 21 changer transitions 0/447 dead transitions. [2023-08-27 01:53:33,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 447 transitions, 6322 flow [2023-08-27 01:53:33,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 01:53:33,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 01:53:33,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 385 transitions. [2023-08-27 01:53:33,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4974160206718346 [2023-08-27 01:53:33,905 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 385 transitions. [2023-08-27 01:53:33,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 385 transitions. [2023-08-27 01:53:33,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:53:33,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 385 transitions. [2023-08-27 01:53:33,906 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:53:33,907 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:53:33,907 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 258.0) internal successors, (1032), 4 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:53:33,907 INFO L175 Difference]: Start difference. First operand has 78 places, 279 transitions, 3306 flow. Second operand 3 states and 385 transitions. [2023-08-27 01:53:33,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 447 transitions, 6322 flow [2023-08-27 01:54:28,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 447 transitions, 5790 flow, removed 266 selfloop flow, removed 0 redundant places. [2023-08-27 01:54:28,143 INFO L231 Difference]: Finished difference. Result has 81 places, 296 transitions, 3337 flow [2023-08-27 01:54:28,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=2974, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=3337, PETRI_PLACES=81, PETRI_TRANSITIONS=296} [2023-08-27 01:54:28,144 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-08-27 01:54:28,144 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 296 transitions, 3337 flow [2023-08-27 01:54:28,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:54:28,144 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:54:28,144 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 01:54:28,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 01:54:28,145 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:54:28,145 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:54:28,145 INFO L85 PathProgramCache]: Analyzing trace with hash -469326137, now seen corresponding path program 1 times [2023-08-27 01:54:28,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:54:28,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505060661] [2023-08-27 01:54:28,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:54:28,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:54:28,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:54:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:54:28,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:54:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505060661] [2023-08-27 01:54:28,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1505060661] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:54:28,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804161156] [2023-08-27 01:54:28,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:54:28,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:54:28,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:54:28,195 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:54:28,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 01:54:28,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:54:28,276 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:54:28,277 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:54:28,292 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:54:28,292 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 01:54:28,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804161156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 01:54:28,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 01:54:28,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 01:54:28,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844381990] [2023-08-27 01:54:28,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 01:54:28,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 01:54:28,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:54:28,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 01:54:28,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 01:54:28,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:54:28,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 296 transitions, 3337 flow. Second operand has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:54:28,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:54:28,297 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:54:28,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:54:58,352 INFO L124 PetriNetUnfolderBase]: 219605/295095 cut-off events. [2023-08-27 01:54:58,352 INFO L125 PetriNetUnfolderBase]: For 867715/867715 co-relation queries the response was YES. [2023-08-27 01:54:59,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1452473 conditions, 295095 events. 219605/295095 cut-off events. For 867715/867715 co-relation queries the response was YES. Maximal size of possible extension queue 9081. Compared 2062133 event pairs, 64446 based on Foata normal form. 0/225897 useless extension candidates. Maximal degree in co-relation 1452440. Up to 186885 conditions per place. [2023-08-27 01:55:01,088 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 501 selfloop transitions, 15 changer transitions 0/516 dead transitions. [2023-08-27 01:55:01,089 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 516 transitions, 6729 flow [2023-08-27 01:55:01,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 01:55:01,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 01:55:01,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 492 transitions. [2023-08-27 01:55:01,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47674418604651164 [2023-08-27 01:55:01,090 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 492 transitions. [2023-08-27 01:55:01,090 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 492 transitions. [2023-08-27 01:55:01,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:55:01,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 492 transitions. [2023-08-27 01:55:01,092 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:55:01,093 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:55:01,094 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 258.0) internal successors, (1290), 5 states have internal predecessors, (1290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:55:01,094 INFO L175 Difference]: Start difference. First operand has 81 places, 296 transitions, 3337 flow. Second operand 4 states and 492 transitions. [2023-08-27 01:55:01,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 516 transitions, 6729 flow [2023-08-27 01:55:19,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 516 transitions, 6689 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 01:55:19,811 INFO L231 Difference]: Finished difference. Result has 82 places, 282 transitions, 3162 flow [2023-08-27 01:55:19,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=3132, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=3162, PETRI_PLACES=82, PETRI_TRANSITIONS=282} [2023-08-27 01:55:19,811 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 32 predicate places. [2023-08-27 01:55:19,811 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 282 transitions, 3162 flow [2023-08-27 01:55:19,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.0) internal successors, (436), 4 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:55:19,812 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:55:19,812 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1] [2023-08-27 01:55:19,817 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-27 01:55:20,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:55:20,013 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:55:20,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:55:20,013 INFO L85 PathProgramCache]: Analyzing trace with hash -469326136, now seen corresponding path program 1 times [2023-08-27 01:55:20,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:55:20,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678611616] [2023-08-27 01:55:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:55:20,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:55:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:55:20,062 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:55:20,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:55:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678611616] [2023-08-27 01:55:20,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678611616] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:55:20,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103858974] [2023-08-27 01:55:20,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:55:20,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:55:20,063 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:55:20,063 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:55:20,066 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 01:55:20,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:55:20,147 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:55:20,147 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:55:20,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:55:20,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:55:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 01:55:20,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103858974] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:55:20,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:55:20,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:55:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637961919] [2023-08-27 01:55:20,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:55:20,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:55:20,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:55:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:55:20,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:55:20,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:55:20,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 282 transitions, 3162 flow. Second operand has 7 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:55:20,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:55:20,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:55:20,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 01:56:20,910 INFO L124 PetriNetUnfolderBase]: 478653/643427 cut-off events. [2023-08-27 01:56:20,910 INFO L125 PetriNetUnfolderBase]: For 2016444/2016444 co-relation queries the response was YES. [2023-08-27 01:56:24,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3145734 conditions, 643427 events. 478653/643427 cut-off events. For 2016444/2016444 co-relation queries the response was YES. Maximal size of possible extension queue 17798. Compared 4797201 event pairs, 97619 based on Foata normal form. 0/503469 useless extension candidates. Maximal degree in co-relation 3145700. Up to 294823 conditions per place. [2023-08-27 01:56:26,888 INFO L140 encePairwiseOnDemand]: 255/258 looper letters, 1203 selfloop transitions, 57 changer transitions 0/1260 dead transitions. [2023-08-27 01:56:26,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 1260 transitions, 16334 flow [2023-08-27 01:56:26,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 01:56:26,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 01:56:26,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 795 transitions. [2023-08-27 01:56:26,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5135658914728682 [2023-08-27 01:56:26,890 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 795 transitions. [2023-08-27 01:56:26,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 795 transitions. [2023-08-27 01:56:26,891 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 01:56:26,891 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 795 transitions. [2023-08-27 01:56:26,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 132.5) internal successors, (795), 6 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:56:26,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:56:26,895 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 258.0) internal successors, (1806), 7 states have internal predecessors, (1806), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:56:26,895 INFO L175 Difference]: Start difference. First operand has 82 places, 282 transitions, 3162 flow. Second operand 6 states and 795 transitions. [2023-08-27 01:56:26,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 1260 transitions, 16334 flow [2023-08-27 01:59:09,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 1260 transitions, 16318 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 01:59:09,580 INFO L231 Difference]: Finished difference. Result has 88 places, 324 transitions, 4008 flow [2023-08-27 01:59:09,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=258, PETRI_DIFFERENCE_MINUEND_FLOW=3146, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=4008, PETRI_PLACES=88, PETRI_TRANSITIONS=324} [2023-08-27 01:59:09,581 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-27 01:59:09,581 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 324 transitions, 4008 flow [2023-08-27 01:59:09,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 110.14285714285714) internal successors, (771), 7 states have internal predecessors, (771), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:59:09,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 01:59:09,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 01:59:09,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 01:59:09,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:09,783 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 01:59:09,783 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 01:59:09,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1350969230, now seen corresponding path program 1 times [2023-08-27 01:59:09,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 01:59:09,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885376414] [2023-08-27 01:59:09,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 01:59:09,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:09,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:59:09,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 01:59:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885376414] [2023-08-27 01:59:09,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885376414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 01:59:09,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421690200] [2023-08-27 01:59:09,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 01:59:09,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 01:59:09,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 01:59:09,818 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 01:59:09,820 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 01:59:09,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 01:59:09,893 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 01:59:09,894 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 01:59:09,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:59:09,905 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 01:59:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 01:59:09,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [421690200] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 01:59:09,921 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 01:59:09,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 01:59:09,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878820821] [2023-08-27 01:59:09,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 01:59:09,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 01:59:09,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 01:59:09,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 01:59:09,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 01:59:09,923 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 258 [2023-08-27 01:59:09,923 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 324 transitions, 4008 flow. Second operand has 7 states, 7 states have (on average 110.28571428571429) internal successors, (772), 7 states have internal predecessors, (772), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 01:59:09,923 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 01:59:09,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 258 [2023-08-27 01:59:09,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand