/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 15:22:23,032 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 15:22:23,115 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 15:22:23,120 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 15:22:23,121 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 15:22:23,152 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 15:22:23,152 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 15:22:23,153 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 15:22:23,153 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 15:22:23,157 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 15:22:23,157 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 15:22:23,157 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 15:22:23,157 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 15:22:23,159 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 15:22:23,159 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 15:22:23,159 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 15:22:23,159 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 15:22:23,159 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 15:22:23,160 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 15:22:23,160 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 15:22:23,160 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 15:22:23,161 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 15:22:23,161 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 15:22:23,162 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 15:22:23,162 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 15:22:23,162 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 15:22:23,162 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 15:22:23,162 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:22:23,163 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 15:22:23,163 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 15:22:23,164 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 15:22:23,164 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 15:22:23,164 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 15:22:23,164 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 15:22:23,164 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 15:22:23,165 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 15:22:23,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 15:22:23,504 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 15:22:23,506 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 15:22:23,507 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 15:22:23,508 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 15:22:23,509 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-27 15:22:24,716 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 15:22:24,939 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 15:22:24,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-27 15:22:24,947 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff426f56/1482bce95a0646bb8d348f7542e1080a/FLAG6626fd4a2 [2023-08-27 15:22:24,961 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ff426f56/1482bce95a0646bb8d348f7542e1080a [2023-08-27 15:22:24,962 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 15:22:24,964 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 15:22:24,967 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 15:22:24,967 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 15:22:24,970 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 15:22:24,971 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:22:24" (1/1) ... [2023-08-27 15:22:24,972 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5378fc00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:24, skipping insertion in model container [2023-08-27 15:22:24,972 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:22:24" (1/1) ... [2023-08-27 15:22:24,997 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 15:22:25,182 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:22:25,190 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 15:22:25,229 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 15:22:25,239 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:22:25,239 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 15:22:25,245 INFO L206 MainTranslator]: Completed translation [2023-08-27 15:22:25,245 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25 WrapperNode [2023-08-27 15:22:25,245 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 15:22:25,247 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 15:22:25,247 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 15:22:25,247 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 15:22:25,253 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,269 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,296 INFO L138 Inliner]: procedures = 24, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2023-08-27 15:22:25,297 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 15:22:25,298 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 15:22:25,298 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 15:22:25,298 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 15:22:25,305 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,306 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,319 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,319 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,323 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,326 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,327 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,341 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 15:22:25,342 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 15:22:25,342 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 15:22:25,343 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 15:22:25,343 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (1/1) ... [2023-08-27 15:22:25,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 15:22:25,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:22:25,372 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 15:22:25,397 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 15:22:25,413 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 15:22:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 15:22:25,414 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 15:22:25,414 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 15:22:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 15:22:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 15:22:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 15:22:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 15:22:25,415 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 15:22:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 15:22:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 15:22:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 15:22:25,415 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 15:22:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 15:22:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 15:22:25,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 15:22:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 15:22:25,416 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 15:22:25,418 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 15:22:25,527 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 15:22:25,529 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 15:22:25,787 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 15:22:25,880 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 15:22:25,880 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 15:22:25,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:25 BoogieIcfgContainer [2023-08-27 15:22:25,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 15:22:25,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 15:22:25,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 15:22:25,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 15:22:25,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:22:24" (1/3) ... [2023-08-27 15:22:25,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19888219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:22:25, skipping insertion in model container [2023-08-27 15:22:25,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:25" (2/3) ... [2023-08-27 15:22:25,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19888219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:22:25, skipping insertion in model container [2023-08-27 15:22:25,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:25" (3/3) ... [2023-08-27 15:22:25,890 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-08-27 15:22:25,903 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 15:22:25,903 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 15:22:25,903 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 15:22:25,997 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 15:22:26,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2023-08-27 15:22:26,086 INFO L124 PetriNetUnfolderBase]: 10/138 cut-off events. [2023-08-27 15:22:26,086 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 15:22:26,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-27 15:22:26,096 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2023-08-27 15:22:26,100 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 125 transitions, 274 flow [2023-08-27 15:22:26,103 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 15:22:26,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 274 flow [2023-08-27 15:22:26,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 274 flow [2023-08-27 15:22:26,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2023-08-27 15:22:26,146 INFO L124 PetriNetUnfolderBase]: 10/125 cut-off events. [2023-08-27 15:22:26,146 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 15:22:26,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 10/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-27 15:22:26,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-27 15:22:29,922 INFO L134 LiptonReduction]: Checked pairs total: 4840 [2023-08-27 15:22:29,923 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-27 15:22:29,936 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 15:22:29,941 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;@3fc4cd23, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 15:22:29,941 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 15:22:29,944 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 15:22:29,944 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-27 15:22:29,944 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 15:22:29,944 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:29,945 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 15:22:29,945 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:29,949 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:29,949 INFO L85 PathProgramCache]: Analyzing trace with hash 17773958, now seen corresponding path program 1 times [2023-08-27 15:22:29,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:29,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555874310] [2023-08-27 15:22:29,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:29,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:30,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:30,095 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 15:22:30,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:30,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555874310] [2023-08-27 15:22:30,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555874310] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:30,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:30,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:30,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340552852] [2023-08-27 15:22:30,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:30,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 15:22:30,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:30,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 15:22:30,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 15:22:30,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-08-27 15:22:30,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:30,131 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-08-27 15:22:30,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:30,524 INFO L124 PetriNetUnfolderBase]: 2050/2986 cut-off events. [2023-08-27 15:22:30,524 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-27 15:22:30,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 2986 events. 2050/2986 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 16565 event pairs, 1965 based on Foata normal form. 0/1502 useless extension candidates. Maximal degree in co-relation 4942. Up to 2817 conditions per place. [2023-08-27 15:22:30,553 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 29 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-27 15:22:30,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 156 flow [2023-08-27 15:22:30,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 15:22:30,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 15:22:30,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2023-08-27 15:22:30,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536734693877551 [2023-08-27 15:22:30,565 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2023-08-27 15:22:30,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2023-08-27 15:22:30,566 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:30,568 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2023-08-27 15:22:30,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,574 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,574 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,576 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 2 states and 263 transitions. [2023-08-27 15:22:30,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 156 flow [2023-08-27 15:22:30,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 140 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 15:22:30,584 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 82 flow [2023-08-27 15:22:30,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-27 15:22:30,589 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-08-27 15:22:30,589 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 82 flow [2023-08-27 15:22:30,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:30,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 15:22:30,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 15:22:30,590 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:30,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:30,590 INFO L85 PathProgramCache]: Analyzing trace with hash 17773959, now seen corresponding path program 1 times [2023-08-27 15:22:30,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:30,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129345574] [2023-08-27 15:22:30,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:30,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:30,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:30,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 15:22:30,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:30,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129345574] [2023-08-27 15:22:30,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129345574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:30,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:30,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:30,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724728909] [2023-08-27 15:22:30,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:30,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:30,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:30,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:30,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:30,717 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2023-08-27 15:22:30,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 82 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 15:22:30,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:30,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2023-08-27 15:22:30,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:30,943 INFO L124 PetriNetUnfolderBase]: 2407/3330 cut-off events. [2023-08-27 15:22:30,943 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 15:22:30,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 3330 events. 2407/3330 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16194 event pairs, 1965 based on Foata normal form. 0/2212 useless extension candidates. Maximal degree in co-relation 6601. Up to 3186 conditions per place. [2023-08-27 15:22:30,968 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 30 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-27 15:22:30,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 140 flow [2023-08-27 15:22:30,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:30,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:30,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-27 15:22:30,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-27 15:22:30,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-27 15:22:30,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-27 15:22:30,972 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:30,972 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-27 15:22:30,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,975 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:30,976 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 82 flow. Second operand 3 states and 357 transitions. [2023-08-27 15:22:30,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 140 flow [2023-08-27 15:22:30,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 15:22:30,977 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 80 flow [2023-08-27 15:22:30,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-08-27 15:22:30,978 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-08-27 15:22:30,978 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 80 flow [2023-08-27 15:22:30,979 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 15:22:30,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:30,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:30,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 15:22:30,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:30,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:30,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1159756599, now seen corresponding path program 1 times [2023-08-27 15:22:30,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:30,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1793561076] [2023-08-27 15:22:30,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:30,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:31,199 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 15:22:31,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:31,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1793561076] [2023-08-27 15:22:31,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1793561076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:31,200 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:31,200 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:31,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921948042] [2023-08-27 15:22:31,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:31,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:31,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:31,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:31,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:31,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2023-08-27 15:22:31,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:31,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2023-08-27 15:22:31,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:31,369 INFO L124 PetriNetUnfolderBase]: 1345/1872 cut-off events. [2023-08-27 15:22:31,370 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 15:22:31,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1872 events. 1345/1872 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8025 event pairs, 1113 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 3786. Up to 1864 conditions per place. [2023-08-27 15:22:31,383 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 28 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-27 15:22:31,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 134 flow [2023-08-27 15:22:31,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:31,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-27 15:22:31,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2023-08-27 15:22:31,385 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-27 15:22:31,385 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-27 15:22:31,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:31,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-27 15:22:31,387 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,390 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,390 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 80 flow. Second operand 3 states and 355 transitions. [2023-08-27 15:22:31,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 134 flow [2023-08-27 15:22:31,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:22:31,391 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 77 flow [2023-08-27 15:22:31,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-27 15:22:31,392 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2023-08-27 15:22:31,392 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 77 flow [2023-08-27 15:22:31,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:31,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:31,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 15:22:31,393 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:31,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:31,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1231370885, now seen corresponding path program 1 times [2023-08-27 15:22:31,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:31,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838004076] [2023-08-27 15:22:31,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:31,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:31,653 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 15:22:31,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:31,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838004076] [2023-08-27 15:22:31,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838004076] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:31,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:31,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 15:22:31,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696834636] [2023-08-27 15:22:31,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:31,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 15:22:31,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:31,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 15:22:31,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 15:22:31,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 245 [2023-08-27 15:22:31,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:31,659 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 245 [2023-08-27 15:22:31,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:31,859 INFO L124 PetriNetUnfolderBase]: 1537/2184 cut-off events. [2023-08-27 15:22:31,859 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 15:22:31,862 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 2184 events. 1537/2184 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9229 event pairs, 141 based on Foata normal form. 1/1367 useless extension candidates. Maximal degree in co-relation 4176. Up to 1733 conditions per place. [2023-08-27 15:22:31,873 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 41 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-08-27 15:22:31,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 222 flow [2023-08-27 15:22:31,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 15:22:31,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 15:22:31,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-27 15:22:31,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2023-08-27 15:22:31,875 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-27 15:22:31,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-27 15:22:31,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:31,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-27 15:22:31,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,878 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,879 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 77 flow. Second operand 3 states and 375 transitions. [2023-08-27 15:22:31,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 222 flow [2023-08-27 15:22:31,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:22:31,882 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 109 flow [2023-08-27 15:22:31,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-08-27 15:22:31,883 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2023-08-27 15:22:31,883 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 109 flow [2023-08-27 15:22:31,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:31,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:31,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:31,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 15:22:31,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:31,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:31,885 INFO L85 PathProgramCache]: Analyzing trace with hash 801559637, now seen corresponding path program 1 times [2023-08-27 15:22:31,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:31,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667072367] [2023-08-27 15:22:31,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:31,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:31,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:32,142 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 15:22:32,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:32,144 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667072367] [2023-08-27 15:22:32,144 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667072367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:32,144 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:32,144 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:22:32,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563851698] [2023-08-27 15:22:32,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:32,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:32,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:32,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:32,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:32,149 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 15:22:32,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:32,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:32,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 15:22:32,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:32,583 INFO L124 PetriNetUnfolderBase]: 2729/3838 cut-off events. [2023-08-27 15:22:32,583 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2023-08-27 15:22:32,590 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9118 conditions, 3838 events. 2729/3838 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 19558 event pairs, 856 based on Foata normal form. 40/3874 useless extension candidates. Maximal degree in co-relation 9113. Up to 1800 conditions per place. [2023-08-27 15:22:32,611 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 88 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2023-08-27 15:22:32,611 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 101 transitions, 492 flow [2023-08-27 15:22:32,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:22:32,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:22:32,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-08-27 15:22:32,613 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946938775510204 [2023-08-27 15:22:32,613 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-08-27 15:22:32,613 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-08-27 15:22:32,614 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:32,614 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-08-27 15:22:32,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:32,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:32,618 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:32,618 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 109 flow. Second operand 5 states and 606 transitions. [2023-08-27 15:22:32,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 101 transitions, 492 flow [2023-08-27 15:22:32,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 101 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:22:32,621 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 168 flow [2023-08-27 15:22:32,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 15:22:32,621 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-27 15:22:32,622 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 168 flow [2023-08-27 15:22:32,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:32,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:32,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:32,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 15:22:32,623 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:32,623 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:32,623 INFO L85 PathProgramCache]: Analyzing trace with hash -432930337, now seen corresponding path program 2 times [2023-08-27 15:22:32,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:32,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202942737] [2023-08-27 15:22:32,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:32,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:32,926 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 15:22:32,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:32,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202942737] [2023-08-27 15:22:32,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1202942737] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:22:32,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000948995] [2023-08-27 15:22:32,927 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 15:22:32,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:22:32,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:22:32,933 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 15:22:32,941 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 15:22:33,043 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 15:22:33,043 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:22:33,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 15:22:33,067 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:22:33,315 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 15:22:33,316 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:22:33,575 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 15:22:33,579 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000948995] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:22:33,579 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:22:33,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 15:22:33,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043419848] [2023-08-27 15:22:33,580 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:22:33,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 15:22:33,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 15:22:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-08-27 15:22:33,584 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 245 [2023-08-27 15:22:33,585 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 168 flow. Second operand has 15 states, 15 states have (on average 97.4) internal successors, (1461), 15 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:33,585 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:33,585 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 245 [2023-08-27 15:22:33,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:36,731 INFO L124 PetriNetUnfolderBase]: 21095/28358 cut-off events. [2023-08-27 15:22:36,731 INFO L125 PetriNetUnfolderBase]: For 20495/20495 co-relation queries the response was YES. [2023-08-27 15:22:36,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77707 conditions, 28358 events. 21095/28358 cut-off events. For 20495/20495 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 150419 event pairs, 350 based on Foata normal form. 840/29198 useless extension candidates. Maximal degree in co-relation 77699. Up to 7785 conditions per place. [2023-08-27 15:22:36,918 INFO L140 encePairwiseOnDemand]: 233/245 looper letters, 407 selfloop transitions, 127 changer transitions 3/537 dead transitions. [2023-08-27 15:22:36,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 537 transitions, 3055 flow [2023-08-27 15:22:36,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 15:22:36,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 15:22:36,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2610 transitions. [2023-08-27 15:22:36,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631765749778172 [2023-08-27 15:22:36,927 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2610 transitions. [2023-08-27 15:22:36,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2610 transitions. [2023-08-27 15:22:36,928 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:36,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2610 transitions. [2023-08-27 15:22:36,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.47826086956522) internal successors, (2610), 23 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:36,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:36,947 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:36,947 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 168 flow. Second operand 23 states and 2610 transitions. [2023-08-27 15:22:36,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 537 transitions, 3055 flow [2023-08-27 15:22:36,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 537 transitions, 2983 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 15:22:36,990 INFO L231 Difference]: Finished difference. Result has 81 places, 199 transitions, 1511 flow [2023-08-27 15:22:36,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1511, PETRI_PLACES=81, PETRI_TRANSITIONS=199} [2023-08-27 15:22:36,993 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-08-27 15:22:36,993 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 199 transitions, 1511 flow [2023-08-27 15:22:36,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.4) internal successors, (1461), 15 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:36,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:36,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:37,008 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 15:22:37,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 15:22:37,202 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:37,202 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:37,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1918713104, now seen corresponding path program 1 times [2023-08-27 15:22:37,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:37,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149209386] [2023-08-27 15:22:37,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:37,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:37,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:37,558 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 15:22:37,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:37,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149209386] [2023-08-27 15:22:37,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149209386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:37,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:37,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:22:37,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468653220] [2023-08-27 15:22:37,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:37,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:37,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:37,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:37,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:37,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 15:22:37,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 199 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:37,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:37,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 15:22:37,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:38,534 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([486] L112-->L105-1: Formula: (and (not (= (mod v_thread4Thread1of1ForFork2_~cond~3_17 256) 0)) (or (and (= v_~n2~0_67 v_~n2~0_66) (<= v_~n2~0_67 1) (= v_~p2~0_64 v_~p2~0_63)) (and (<= v_~n2~0_67 2147483649) (= (+ v_~n2~0_66 2) v_~n2~0_67) (< 1 v_~n2~0_67) (= (+ (* v_~m~0_61 2) v_~p2~0_64) v_~p2~0_63)))) InVars {~m~0=v_~m~0_61, ~n2~0=v_~n2~0_67, ~p2~0=v_~p2~0_64, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} OutVars{~m~0=v_~m~0_61, ~n2~0=v_~n2~0_66, ~p2~0=v_~p2~0_63, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} AuxVars[] AssignedVars[~n2~0, ~p2~0][332], [Black: 351#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 357#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 371#(and (or (< 0 ~n2~0) (= (mod thread1Thread1of1ForFork1_~cond~0 256) 0) (and (or (< 0 ~n1~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (<= ~n1~0 0) (< 2147483648 ~n1~0)))) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 367#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), 170#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), Black: 355#(and (<= ~n2~0 2147483648) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 44#L48-1true, 157#(<= ~n2~0 2147483647), 134#L93true, 153#(<= ~n1~0 2147483647), 177#true, 393#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), 121#L132-4true, Black: 161#(= (+ ~p1~0 (* (div ~p2~0 4294967296) 4294967296)) (+ (* (div ~p1~0 4294967296) 4294967296) ~p2~0)), 148#true, 52#thread2EXITtrue, Black: 172#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0) (<= thread1Thread1of1ForFork1_~cond~0 (* (div thread1Thread1of1ForFork1_~cond~0 256) 256)) (< 0 (+ (div thread1Thread1of1ForFork1_~cond~0 256) 1))), Black: 166#(or (and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)) (and (< 0 ~n1~0) (= thread2Thread1of1ForFork3_~cond~1 1))), Black: 369#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 361#(and (<= ~n2~0 2147483648) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 314#(or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), 31#L105-1true, Black: 373#(and (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 219#(= thread3Thread1of1ForFork0_~cond~2 1), Black: 365#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 182#(and (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 353#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))))]) [2023-08-27 15:22:38,534 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2023-08-27 15:22:38,534 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 15:22:38,534 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 15:22:38,534 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 15:22:38,732 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([486] L112-->L105-1: Formula: (and (not (= (mod v_thread4Thread1of1ForFork2_~cond~3_17 256) 0)) (or (and (= v_~n2~0_67 v_~n2~0_66) (<= v_~n2~0_67 1) (= v_~p2~0_64 v_~p2~0_63)) (and (<= v_~n2~0_67 2147483649) (= (+ v_~n2~0_66 2) v_~n2~0_67) (< 1 v_~n2~0_67) (= (+ (* v_~m~0_61 2) v_~p2~0_64) v_~p2~0_63)))) InVars {~m~0=v_~m~0_61, ~n2~0=v_~n2~0_67, ~p2~0=v_~p2~0_64, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} OutVars{~m~0=v_~m~0_61, ~n2~0=v_~n2~0_66, ~p2~0=v_~p2~0_63, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} AuxVars[] AssignedVars[~n2~0, ~p2~0][332], [Black: 351#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 357#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 371#(and (or (< 0 ~n2~0) (= (mod thread1Thread1of1ForFork1_~cond~0 256) 0) (and (or (< 0 ~n1~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (<= ~n1~0 0) (< 2147483648 ~n1~0)))) (= thread3Thread1of1ForFork0_~cond~2 1)), 170#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), Black: 367#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 355#(and (<= ~n2~0 2147483648) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 44#L48-1true, 157#(<= ~n2~0 2147483647), 134#L93true, 153#(<= ~n1~0 2147483647), 177#true, 393#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), 68#L133-1true, Black: 161#(= (+ ~p1~0 (* (div ~p2~0 4294967296) 4294967296)) (+ (* (div ~p1~0 4294967296) 4294967296) ~p2~0)), 148#true, 52#thread2EXITtrue, Black: 172#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0) (<= thread1Thread1of1ForFork1_~cond~0 (* (div thread1Thread1of1ForFork1_~cond~0 256) 256)) (< 0 (+ (div thread1Thread1of1ForFork1_~cond~0 256) 1))), Black: 166#(or (and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)) (and (< 0 ~n1~0) (= thread2Thread1of1ForFork3_~cond~1 1))), Black: 369#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 361#(and (<= ~n2~0 2147483648) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 31#L105-1true, Black: 314#(or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 373#(and (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 219#(= thread3Thread1of1ForFork0_~cond~2 1), Black: 365#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 182#(and (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 353#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))))]) [2023-08-27 15:22:38,732 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2023-08-27 15:22:38,732 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 15:22:38,732 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 15:22:38,732 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 15:22:39,783 INFO L124 PetriNetUnfolderBase]: 17470/23996 cut-off events. [2023-08-27 15:22:39,783 INFO L125 PetriNetUnfolderBase]: For 116886/118723 co-relation queries the response was YES. [2023-08-27 15:22:39,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96036 conditions, 23996 events. 17470/23996 cut-off events. For 116886/118723 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 141728 event pairs, 2753 based on Foata normal form. 1710/25328 useless extension candidates. Maximal degree in co-relation 96015. Up to 10081 conditions per place. [2023-08-27 15:22:40,020 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 332 selfloop transitions, 102 changer transitions 0/452 dead transitions. [2023-08-27 15:22:40,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 452 transitions, 4164 flow [2023-08-27 15:22:40,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:22:40,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:22:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-08-27 15:22:40,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2023-08-27 15:22:40,023 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-08-27 15:22:40,023 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-08-27 15:22:40,024 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:40,024 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-08-27 15:22:40,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:40,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:40,029 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:40,029 INFO L175 Difference]: Start difference. First operand has 81 places, 199 transitions, 1511 flow. Second operand 6 states and 725 transitions. [2023-08-27 15:22:40,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 452 transitions, 4164 flow [2023-08-27 15:22:40,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 452 transitions, 3750 flow, removed 195 selfloop flow, removed 1 redundant places. [2023-08-27 15:22:40,542 INFO L231 Difference]: Finished difference. Result has 88 places, 243 transitions, 2039 flow [2023-08-27 15:22:40,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2039, PETRI_PLACES=88, PETRI_TRANSITIONS=243} [2023-08-27 15:22:40,543 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-27 15:22:40,543 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 243 transitions, 2039 flow [2023-08-27 15:22:40,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:40,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:40,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:40,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 15:22:40,544 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:40,544 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash 769178735, now seen corresponding path program 3 times [2023-08-27 15:22:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311439552] [2023-08-27 15:22:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:40,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:40,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:40,835 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 15:22:40,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:40,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311439552] [2023-08-27 15:22:40,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311439552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 15:22:40,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408669888] [2023-08-27 15:22:40,836 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 15:22:40,836 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 15:22:40,836 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 15:22:40,841 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 15:22:40,849 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 15:22:40,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 15:22:40,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 15:22:40,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 15:22:40,959 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 15:22:41,123 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 15:22:41,124 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 15:22:41,406 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 15:22:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1408669888] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 15:22:41,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 15:22:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-27 15:22:41,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176268110] [2023-08-27 15:22:41,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 15:22:41,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 15:22:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:41,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 15:22:41,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-27 15:22:41,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 245 [2023-08-27 15:22:41,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 243 transitions, 2039 flow. Second operand has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:41,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:41,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 245 [2023-08-27 15:22:41,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:22:50,033 INFO L124 PetriNetUnfolderBase]: 53477/72794 cut-off events. [2023-08-27 15:22:50,033 INFO L125 PetriNetUnfolderBase]: For 278310/278310 co-relation queries the response was YES. [2023-08-27 15:22:50,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284643 conditions, 72794 events. 53477/72794 cut-off events. For 278310/278310 co-relation queries the response was YES. Maximal size of possible extension queue 2428. Compared 445864 event pairs, 1096 based on Foata normal form. 2902/75696 useless extension candidates. Maximal degree in co-relation 284618. Up to 13803 conditions per place. [2023-08-27 15:22:50,623 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 856 selfloop transitions, 629 changer transitions 3/1488 dead transitions. [2023-08-27 15:22:50,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 1488 transitions, 14114 flow [2023-08-27 15:22:50,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 15:22:50,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 15:22:50,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3952 transitions. [2023-08-27 15:22:50,639 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44807256235827664 [2023-08-27 15:22:50,639 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3952 transitions. [2023-08-27 15:22:50,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3952 transitions. [2023-08-27 15:22:50,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:22:50,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3952 transitions. [2023-08-27 15:22:50,648 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 109.77777777777777) internal successors, (3952), 36 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:50,662 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 245.0) internal successors, (9065), 37 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:50,664 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 245.0) internal successors, (9065), 37 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:50,664 INFO L175 Difference]: Start difference. First operand has 88 places, 243 transitions, 2039 flow. Second operand 36 states and 3952 transitions. [2023-08-27 15:22:50,664 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 1488 transitions, 14114 flow [2023-08-27 15:22:54,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 1488 transitions, 13317 flow, removed 117 selfloop flow, removed 3 redundant places. [2023-08-27 15:22:54,273 INFO L231 Difference]: Finished difference. Result has 149 places, 793 transitions, 9220 flow [2023-08-27 15:22:54,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9220, PETRI_PLACES=149, PETRI_TRANSITIONS=793} [2023-08-27 15:22:54,273 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 99 predicate places. [2023-08-27 15:22:54,274 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 793 transitions, 9220 flow [2023-08-27 15:22:54,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:54,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:22:54,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:22:54,279 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 15:22:54,476 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,SelfDestructingSolverStorable7 [2023-08-27 15:22:54,477 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:22:54,477 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:22:54,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1209469846, now seen corresponding path program 1 times [2023-08-27 15:22:54,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:22:54,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980474011] [2023-08-27 15:22:54,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:22:54,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:22:54,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:22:54,678 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 15:22:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:22:54,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980474011] [2023-08-27 15:22:54,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980474011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:22:54,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:22:54,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:22:54,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57470326] [2023-08-27 15:22:54,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:22:54,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:22:54,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:22:54,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:22:54,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:22:54,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 15:22:54,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 793 transitions, 9220 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:22:54,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:22:54,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 15:22:54,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:23:08,008 INFO L124 PetriNetUnfolderBase]: 56962/79088 cut-off events. [2023-08-27 15:23:08,009 INFO L125 PetriNetUnfolderBase]: For 1356191/1365998 co-relation queries the response was YES. [2023-08-27 15:23:08,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483253 conditions, 79088 events. 56962/79088 cut-off events. For 1356191/1365998 co-relation queries the response was YES. Maximal size of possible extension queue 3497. Compared 539706 event pairs, 8624 based on Foata normal form. 9002/87266 useless extension candidates. Maximal degree in co-relation 483201. Up to 37994 conditions per place. [2023-08-27 15:23:09,137 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1238 selfloop transitions, 256 changer transitions 73/1689 dead transitions. [2023-08-27 15:23:09,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1689 transitions, 23011 flow [2023-08-27 15:23:09,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:23:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:23:09,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-27 15:23:09,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48775510204081635 [2023-08-27 15:23:09,140 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-27 15:23:09,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-27 15:23:09,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:23:09,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-27 15:23:09,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:23:09,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:23:09,144 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:23:09,144 INFO L175 Difference]: Start difference. First operand has 149 places, 793 transitions, 9220 flow. Second operand 6 states and 717 transitions. [2023-08-27 15:23:09,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1689 transitions, 23011 flow [2023-08-27 15:23:42,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1689 transitions, 22480 flow, removed 228 selfloop flow, removed 2 redundant places. [2023-08-27 15:23:42,195 INFO L231 Difference]: Finished difference. Result has 156 places, 919 transitions, 11228 flow [2023-08-27 15:23:42,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=8935, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11228, PETRI_PLACES=156, PETRI_TRANSITIONS=919} [2023-08-27 15:23:42,201 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 106 predicate places. [2023-08-27 15:23:42,202 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 919 transitions, 11228 flow [2023-08-27 15:23:42,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:23:42,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:23:42,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:23:42,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 15:23:42,203 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:23:42,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:23:42,203 INFO L85 PathProgramCache]: Analyzing trace with hash -805761356, now seen corresponding path program 1 times [2023-08-27 15:23:42,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:23:42,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131222117] [2023-08-27 15:23:42,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:23:42,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:23:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:23:42,463 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 15:23:42,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:23:42,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131222117] [2023-08-27 15:23:42,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131222117] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:23:42,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:23:42,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 15:23:42,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62420197] [2023-08-27 15:23:42,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:23:42,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 15:23:42,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:23:42,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 15:23:42,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 15:23:42,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 15:23:42,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 919 transitions, 11228 flow. Second operand has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:23:42,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:23:42,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 15:23:42,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:24:02,806 INFO L124 PetriNetUnfolderBase]: 80103/111208 cut-off events. [2023-08-27 15:24:02,807 INFO L125 PetriNetUnfolderBase]: For 2608179/2608179 co-relation queries the response was YES. [2023-08-27 15:24:03,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767317 conditions, 111208 events. 80103/111208 cut-off events. For 2608179/2608179 co-relation queries the response was YES. Maximal size of possible extension queue 4111. Compared 753661 event pairs, 17280 based on Foata normal form. 836/112044 useless extension candidates. Maximal degree in co-relation 767260. Up to 90250 conditions per place. [2023-08-27 15:24:04,336 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1154 selfloop transitions, 102 changer transitions 2/1258 dead transitions. [2023-08-27 15:24:04,336 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1258 transitions, 17953 flow [2023-08-27 15:24:04,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 15:24:04,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 15:24:04,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-08-27 15:24:04,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2023-08-27 15:24:04,339 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-08-27 15:24:04,339 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-08-27 15:24:04,339 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:24:04,339 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-08-27 15:24:04,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:24:04,342 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:24:04,343 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:24:04,343 INFO L175 Difference]: Start difference. First operand has 156 places, 919 transitions, 11228 flow. Second operand 6 states and 708 transitions. [2023-08-27 15:24:04,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1258 transitions, 17953 flow [2023-08-27 15:26:02,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1258 transitions, 17754 flow, removed 88 selfloop flow, removed 1 redundant places. [2023-08-27 15:26:02,169 INFO L231 Difference]: Finished difference. Result has 164 places, 1002 transitions, 12685 flow [2023-08-27 15:26:02,170 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=11176, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12685, PETRI_PLACES=164, PETRI_TRANSITIONS=1002} [2023-08-27 15:26:02,170 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 114 predicate places. [2023-08-27 15:26:02,170 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 1002 transitions, 12685 flow [2023-08-27 15:26:02,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:26:02,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:26:02,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:26:02,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 15:26:02,171 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:26:02,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:26:02,171 INFO L85 PathProgramCache]: Analyzing trace with hash 445085424, now seen corresponding path program 2 times [2023-08-27 15:26:02,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:26:02,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548991364] [2023-08-27 15:26:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:26:02,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:26:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:26:02,338 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 15:26:02,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:26:02,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548991364] [2023-08-27 15:26:02,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548991364] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:26:02,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:26:02,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:26:02,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920363150] [2023-08-27 15:26:02,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:26:02,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:26:02,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:26:02,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:26:02,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:26:02,340 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 15:26:02,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 1002 transitions, 12685 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:26:02,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:26:02,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 15:26:02,341 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:26:23,406 INFO L124 PetriNetUnfolderBase]: 72807/103821 cut-off events. [2023-08-27 15:26:23,407 INFO L125 PetriNetUnfolderBase]: For 2544259/2557368 co-relation queries the response was YES. [2023-08-27 15:26:24,305 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737604 conditions, 103821 events. 72807/103821 cut-off events. For 2544259/2557368 co-relation queries the response was YES. Maximal size of possible extension queue 4901. Compared 774490 event pairs, 13449 based on Foata normal form. 11350/114076 useless extension candidates. Maximal degree in co-relation 737543. Up to 44126 conditions per place. [2023-08-27 15:26:24,878 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 940 selfloop transitions, 331 changer transitions 17/1416 dead transitions. [2023-08-27 15:26:24,879 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1416 transitions, 20397 flow [2023-08-27 15:26:24,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:26:24,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:26:24,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-08-27 15:26:24,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2023-08-27 15:26:24,880 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-08-27 15:26:24,880 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-08-27 15:26:24,881 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:26:24,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-08-27 15:26:24,882 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:26:24,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:26:24,884 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:26:24,884 INFO L175 Difference]: Start difference. First operand has 164 places, 1002 transitions, 12685 flow. Second operand 5 states and 600 transitions. [2023-08-27 15:26:24,884 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1416 transitions, 20397 flow [2023-08-27 15:27:31,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1416 transitions, 20312 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 15:27:31,588 INFO L231 Difference]: Finished difference. Result has 170 places, 1039 transitions, 14273 flow [2023-08-27 15:27:31,588 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=12646, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14273, PETRI_PLACES=170, PETRI_TRANSITIONS=1039} [2023-08-27 15:27:31,589 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2023-08-27 15:27:31,589 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 1039 transitions, 14273 flow [2023-08-27 15:27:31,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:27:31,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:27:31,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:27:31,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 15:27:31,589 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:27:31,590 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:27:31,590 INFO L85 PathProgramCache]: Analyzing trace with hash -336846700, now seen corresponding path program 3 times [2023-08-27 15:27:31,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:27:31,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740433839] [2023-08-27 15:27:31,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:27:31,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:27:31,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:27:31,758 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 15:27:31,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:27:31,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740433839] [2023-08-27 15:27:31,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740433839] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:27:31,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:27:31,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:27:31,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578868156] [2023-08-27 15:27:31,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:27:31,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 15:27:31,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:27:31,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 15:27:31,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 15:27:31,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 15:27:31,761 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 1039 transitions, 14273 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:27:31,761 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:27:31,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 15:27:31,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:27:54,331 INFO L124 PetriNetUnfolderBase]: 71047/102304 cut-off events. [2023-08-27 15:27:54,331 INFO L125 PetriNetUnfolderBase]: For 2836932/2850402 co-relation queries the response was YES. [2023-08-27 15:27:55,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770418 conditions, 102304 events. 71047/102304 cut-off events. For 2836932/2850402 co-relation queries the response was YES. Maximal size of possible extension queue 4901. Compared 777960 event pairs, 13918 based on Foata normal form. 12263/113644 useless extension candidates. Maximal degree in co-relation 770354. Up to 45720 conditions per place. [2023-08-27 15:27:55,769 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 941 selfloop transitions, 322 changer transitions 65/1446 dead transitions. [2023-08-27 15:27:55,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1446 transitions, 21988 flow [2023-08-27 15:27:55,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 15:27:55,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 15:27:55,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-08-27 15:27:55,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2023-08-27 15:27:55,772 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-08-27 15:27:55,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-08-27 15:27:55,772 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:27:55,772 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-08-27 15:27:55,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:27:55,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:27:55,775 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:27:55,775 INFO L175 Difference]: Start difference. First operand has 170 places, 1039 transitions, 14273 flow. Second operand 5 states and 602 transitions. [2023-08-27 15:27:55,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1446 transitions, 21988 flow [2023-08-27 15:29:17,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1446 transitions, 21641 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-08-27 15:29:17,416 INFO L231 Difference]: Finished difference. Result has 176 places, 1000 transitions, 14454 flow [2023-08-27 15:29:17,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=13478, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14454, PETRI_PLACES=176, PETRI_TRANSITIONS=1000} [2023-08-27 15:29:17,417 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 126 predicate places. [2023-08-27 15:29:17,417 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 1000 transitions, 14454 flow [2023-08-27 15:29:17,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:29:17,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:29:17,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:29:17,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 15:29:17,418 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:29:17,418 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:29:17,419 INFO L85 PathProgramCache]: Analyzing trace with hash -51297320, now seen corresponding path program 4 times [2023-08-27 15:29:17,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:29:17,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331997918] [2023-08-27 15:29:17,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:29:17,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:29:17,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:29:17,707 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 15:29:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:29:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331997918] [2023-08-27 15:29:17,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331997918] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:29:17,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:29:17,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:29:17,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463152483] [2023-08-27 15:29:17,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:29:17,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:29:17,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:29:17,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:29:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:29:17,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 15:29:17,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 1000 transitions, 14454 flow. Second operand has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:29:17,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:29:17,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 15:29:17,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 15:29:46,726 INFO L124 PetriNetUnfolderBase]: 89448/128415 cut-off events. [2023-08-27 15:29:46,727 INFO L125 PetriNetUnfolderBase]: For 3501473/3501473 co-relation queries the response was YES. [2023-08-27 15:29:48,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991184 conditions, 128415 events. 89448/128415 cut-off events. For 3501473/3501473 co-relation queries the response was YES. Maximal size of possible extension queue 5127. Compared 958171 event pairs, 19541 based on Foata normal form. 1292/129707 useless extension candidates. Maximal degree in co-relation 991117. Up to 96078 conditions per place. [2023-08-27 15:29:48,635 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1289 selfloop transitions, 118 changer transitions 0/1407 dead transitions. [2023-08-27 15:29:48,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1407 transitions, 24273 flow [2023-08-27 15:29:48,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 15:29:48,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 15:29:48,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 942 transitions. [2023-08-27 15:29:48,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806122448979592 [2023-08-27 15:29:48,638 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 942 transitions. [2023-08-27 15:29:48,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 942 transitions. [2023-08-27 15:29:48,639 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 15:29:48,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 942 transitions. [2023-08-27 15:29:48,641 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:29:48,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:29:48,644 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:29:48,644 INFO L175 Difference]: Start difference. First operand has 176 places, 1000 transitions, 14454 flow. Second operand 8 states and 942 transitions. [2023-08-27 15:29:48,644 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1407 transitions, 24273 flow [2023-08-27 15:31:54,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1407 transitions, 23740 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-08-27 15:31:54,161 INFO L231 Difference]: Finished difference. Result has 186 places, 1053 transitions, 15447 flow [2023-08-27 15:31:54,162 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=14137, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15447, PETRI_PLACES=186, PETRI_TRANSITIONS=1053} [2023-08-27 15:31:54,162 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 136 predicate places. [2023-08-27 15:31:54,163 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 1053 transitions, 15447 flow [2023-08-27 15:31:54,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:31:54,163 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 15:31:54,163 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 15:31:54,163 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 15:31:54,164 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 15:31:54,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 15:31:54,164 INFO L85 PathProgramCache]: Analyzing trace with hash -2005107526, now seen corresponding path program 2 times [2023-08-27 15:31:54,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 15:31:54,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933131851] [2023-08-27 15:31:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 15:31:54,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 15:31:54,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 15:31:54,396 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 15:31:54,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 15:31:54,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933131851] [2023-08-27 15:31:54,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933131851] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 15:31:54,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 15:31:54,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 15:31:54,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763232456] [2023-08-27 15:31:54,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 15:31:54,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 15:31:54,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 15:31:54,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 15:31:54,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 15:31:54,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 245 [2023-08-27 15:31:54,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 1053 transitions, 15447 flow. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 15:31:54,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 15:31:54,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 245 [2023-08-27 15:31:54,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand