/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 00:48:57,150 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 00:48:57,235 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 00:48:57,241 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 00:48:57,242 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 00:48:57,275 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 00:48:57,276 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 00:48:57,280 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 00:48:57,281 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 00:48:57,284 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 00:48:57,285 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 00:48:57,285 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 00:48:57,285 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 00:48:57,286 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 00:48:57,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 00:48:57,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 00:48:57,287 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 00:48:57,287 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 00:48:57,287 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 00:48:57,287 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 00:48:57,288 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 00:48:57,288 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 00:48:57,289 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 00:48:57,289 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 00:48:57,289 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 00:48:57,290 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 00:48:57,290 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 00:48:57,290 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:48:57,290 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 00:48:57,290 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 00:48:57,291 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 00:48:57,291 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 00:48:57,291 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 00:48:57,292 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 00:48:57,292 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 00:48:57,292 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 00:48:57,595 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 00:48:57,611 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 00:48:57,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 00:48:57,614 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 00:48:57,618 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 00:48:57,619 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2023-08-27 00:48:58,896 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 00:48:59,109 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 00:48:59,110 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-counter-determinism.wvr.c [2023-08-27 00:48:59,116 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9412c2a/3ddb3fdf0d6a4ec6a49f3e8c983dd1aa/FLAGdde0549f2 [2023-08-27 00:48:59,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4b9412c2a/3ddb3fdf0d6a4ec6a49f3e8c983dd1aa [2023-08-27 00:48:59,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 00:48:59,136 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 00:48:59,139 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 00:48:59,139 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 00:48:59,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 00:48:59,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6cc1b63d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59, skipping insertion in model container [2023-08-27 00:48:59,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,166 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 00:48:59,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:48:59,357 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 00:48:59,394 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 00:48:59,400 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:48:59,400 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 00:48:59,407 INFO L206 MainTranslator]: Completed translation [2023-08-27 00:48:59,407 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59 WrapperNode [2023-08-27 00:48:59,407 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 00:48:59,409 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 00:48:59,409 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 00:48:59,409 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 00:48:59,414 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,429 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,457 INFO L138 Inliner]: procedures = 23, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 129 [2023-08-27 00:48:59,458 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 00:48:59,459 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 00:48:59,459 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 00:48:59,459 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 00:48:59,466 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,467 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,480 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,480 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,484 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,488 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,489 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,491 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 00:48:59,492 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 00:48:59,492 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 00:48:59,492 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 00:48:59,502 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (1/1) ... [2023-08-27 00:48:59,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 00:48:59,516 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:48:59,529 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 00:48:59,536 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 00:48:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 00:48:59,557 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 00:48:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 00:48:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 00:48:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 00:48:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 00:48:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 00:48:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 00:48:59,558 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 00:48:59,558 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 00:48:59,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 00:48:59,559 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 00:48:59,561 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 00:48:59,647 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 00:48:59,649 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 00:48:59,889 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 00:48:59,963 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 00:48:59,963 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 00:48:59,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:48:59 BoogieIcfgContainer [2023-08-27 00:48:59,965 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 00:48:59,967 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 00:48:59,967 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 00:48:59,970 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 00:48:59,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 12:48:59" (1/3) ... [2023-08-27 00:48:59,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7548157f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:48:59, skipping insertion in model container [2023-08-27 00:48:59,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 12:48:59" (2/3) ... [2023-08-27 00:48:59,971 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7548157f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 12:48:59, skipping insertion in model container [2023-08-27 00:48:59,971 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 12:48:59" (3/3) ... [2023-08-27 00:48:59,972 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-counter-determinism.wvr.c [2023-08-27 00:48:59,987 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 00:48:59,987 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2023-08-27 00:48:59,987 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 00:49:00,074 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 00:49:00,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 149 transitions, 330 flow [2023-08-27 00:49:00,218 INFO L124 PetriNetUnfolderBase]: 9/145 cut-off events. [2023-08-27 00:49:00,219 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:49:00,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 145 events. 9/145 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 215 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 00:49:00,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 149 transitions, 330 flow [2023-08-27 00:49:00,231 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 132 transitions, 288 flow [2023-08-27 00:49:00,234 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 00:49:00,244 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 132 transitions, 288 flow [2023-08-27 00:49:00,246 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 132 transitions, 288 flow [2023-08-27 00:49:00,247 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 132 transitions, 288 flow [2023-08-27 00:49:00,273 INFO L124 PetriNetUnfolderBase]: 9/132 cut-off events. [2023-08-27 00:49:00,273 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 00:49:00,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149 conditions, 132 events. 9/132 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 214 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 00:49:00,277 INFO L119 LiptonReduction]: Number of co-enabled transitions 5712 [2023-08-27 00:49:04,059 INFO L134 LiptonReduction]: Checked pairs total: 6391 [2023-08-27 00:49:04,059 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-27 00:49:04,080 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 00:49:04,087 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;@17e2d5f6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 00:49:04,087 INFO L358 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2023-08-27 00:49:04,092 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 00:49:04,092 INFO L124 PetriNetUnfolderBase]: 1/6 cut-off events. [2023-08-27 00:49:04,093 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 00:49:04,093 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:04,093 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:49:04,094 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:04,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:04,099 INFO L85 PathProgramCache]: Analyzing trace with hash 19420557, now seen corresponding path program 1 times [2023-08-27 00:49:04,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:04,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352838734] [2023-08-27 00:49:04,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:04,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:04,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:04,366 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 00:49:04,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:04,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352838734] [2023-08-27 00:49:04,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352838734] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:04,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:04,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:49:04,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149637573] [2023-08-27 00:49:04,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:04,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:04,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:04,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:04,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:04,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:49:04,400 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:04,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:04,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:49:04,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:06,492 INFO L124 PetriNetUnfolderBase]: 24773/29661 cut-off events. [2023-08-27 00:49:06,492 INFO L125 PetriNetUnfolderBase]: For 1096/1096 co-relation queries the response was YES. [2023-08-27 00:49:06,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60385 conditions, 29661 events. 24773/29661 cut-off events. For 1096/1096 co-relation queries the response was YES. Maximal size of possible extension queue 1895. Compared 127089 event pairs, 3059 based on Foata normal form. 0/8331 useless extension candidates. Maximal degree in co-relation 55402. Up to 26809 conditions per place. [2023-08-27 00:49:06,802 INFO L140 encePairwiseOnDemand]: 255/267 looper letters, 66 selfloop transitions, 4 changer transitions 0/74 dead transitions. [2023-08-27 00:49:06,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 74 transitions, 333 flow [2023-08-27 00:49:06,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:06,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:06,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-27 00:49:06,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5530586766541823 [2023-08-27 00:49:06,820 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-27 00:49:06,820 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-27 00:49:06,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:06,825 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-27 00:49:06,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:06,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:06,835 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:06,837 INFO L175 Difference]: Start difference. First operand has 54 places, 45 transitions, 114 flow. Second operand 3 states and 443 transitions. [2023-08-27 00:49:06,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 74 transitions, 333 flow [2023-08-27 00:49:06,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 74 transitions, 303 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 00:49:06,873 INFO L231 Difference]: Finished difference. Result has 47 places, 46 transitions, 130 flow [2023-08-27 00:49:06,875 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=47, PETRI_TRANSITIONS=46} [2023-08-27 00:49:06,879 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -7 predicate places. [2023-08-27 00:49:06,879 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 46 transitions, 130 flow [2023-08-27 00:49:06,880 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:06,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:06,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 00:49:06,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 00:49:06,880 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:06,881 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:06,881 INFO L85 PathProgramCache]: Analyzing trace with hash 19420635, now seen corresponding path program 1 times [2023-08-27 00:49:06,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:06,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836703119] [2023-08-27 00:49:06,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:06,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:06,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:06,946 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 00:49:06,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:06,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836703119] [2023-08-27 00:49:06,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836703119] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:06,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:06,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:06,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782755461] [2023-08-27 00:49:06,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:06,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:06,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:06,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:06,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:06,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:49:06,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 46 transitions, 130 flow. Second operand has 3 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 00:49:06,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:06,951 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:49:06,951 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:08,816 INFO L124 PetriNetUnfolderBase]: 22636/27725 cut-off events. [2023-08-27 00:49:08,817 INFO L125 PetriNetUnfolderBase]: For 1803/1831 co-relation queries the response was YES. [2023-08-27 00:49:08,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63766 conditions, 27725 events. 22636/27725 cut-off events. For 1803/1831 co-relation queries the response was YES. Maximal size of possible extension queue 1945. Compared 130241 event pairs, 11956 based on Foata normal form. 0/10138 useless extension candidates. Maximal degree in co-relation 55159. Up to 26389 conditions per place. [2023-08-27 00:49:08,995 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 58 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-27 00:49:08,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 64 transitions, 285 flow [2023-08-27 00:49:08,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:08,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:08,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-27 00:49:08,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168539325842697 [2023-08-27 00:49:08,997 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-27 00:49:08,997 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-27 00:49:08,998 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:08,998 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-27 00:49:08,999 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:09,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:09,001 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:09,001 INFO L175 Difference]: Start difference. First operand has 47 places, 46 transitions, 130 flow. Second operand 3 states and 414 transitions. [2023-08-27 00:49:09,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 64 transitions, 285 flow [2023-08-27 00:49:09,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:09,004 INFO L231 Difference]: Finished difference. Result has 49 places, 45 transitions, 131 flow [2023-08-27 00:49:09,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=49, PETRI_TRANSITIONS=45} [2023-08-27 00:49:09,005 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, -5 predicate places. [2023-08-27 00:49:09,005 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 45 transitions, 131 flow [2023-08-27 00:49:09,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 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 00:49:09,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:09,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:49:09,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 00:49:09,006 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:09,007 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:09,007 INFO L85 PathProgramCache]: Analyzing trace with hash 602040494, now seen corresponding path program 1 times [2023-08-27 00:49:09,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:09,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847942122] [2023-08-27 00:49:09,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:09,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:09,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:09,060 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 00:49:09,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847942122] [2023-08-27 00:49:09,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [847942122] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:09,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1048566143] [2023-08-27 00:49:09,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:09,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:09,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:09,065 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 00:49:09,126 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 00:49:09,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:09,182 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:09,185 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:09,212 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 00:49:09,212 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:09,242 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 00:49:09,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1048566143] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:49:09,247 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:49:09,247 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-27 00:49:09,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [198361861] [2023-08-27 00:49:09,247 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:49:09,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:49:09,248 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:09,248 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:49:09,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:49:09,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:49:09,251 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 45 transitions, 131 flow. Second operand has 7 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:09,251 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:09,251 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:49:09,251 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:12,645 INFO L124 PetriNetUnfolderBase]: 55489/65996 cut-off events. [2023-08-27 00:49:12,645 INFO L125 PetriNetUnfolderBase]: For 3705/3705 co-relation queries the response was YES. [2023-08-27 00:49:12,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158439 conditions, 65996 events. 55489/65996 cut-off events. For 3705/3705 co-relation queries the response was YES. Maximal size of possible extension queue 3945. Compared 310211 event pairs, 6167 based on Foata normal form. 0/23674 useless extension candidates. Maximal degree in co-relation 36254. Up to 25362 conditions per place. [2023-08-27 00:49:12,980 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 155 selfloop transitions, 13 changer transitions 0/171 dead transitions. [2023-08-27 00:49:12,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 171 transitions, 796 flow [2023-08-27 00:49:12,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-27 00:49:12,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-27 00:49:12,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 990 transitions. [2023-08-27 00:49:12,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5296950240770465 [2023-08-27 00:49:12,983 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 990 transitions. [2023-08-27 00:49:12,983 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 990 transitions. [2023-08-27 00:49:12,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:12,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 990 transitions. [2023-08-27 00:49:12,986 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 141.42857142857142) internal successors, (990), 7 states have internal predecessors, (990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:12,989 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:12,990 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 267.0) internal successors, (2136), 8 states have internal predecessors, (2136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:12,990 INFO L175 Difference]: Start difference. First operand has 49 places, 45 transitions, 131 flow. Second operand 7 states and 990 transitions. [2023-08-27 00:49:12,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 171 transitions, 796 flow [2023-08-27 00:49:12,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 171 transitions, 789 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 00:49:12,998 INFO L231 Difference]: Finished difference. Result has 56 places, 54 transitions, 208 flow [2023-08-27 00:49:12,998 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=208, PETRI_PLACES=56, PETRI_TRANSITIONS=54} [2023-08-27 00:49:12,999 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 2 predicate places. [2023-08-27 00:49:13,000 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 54 transitions, 208 flow [2023-08-27 00:49:13,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 118.42857142857143) internal successors, (829), 7 states have internal predecessors, (829), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:13,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:49:13,011 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 00:49:13,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:13,212 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:13,212 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:13,212 INFO L85 PathProgramCache]: Analyzing trace with hash 602040477, now seen corresponding path program 1 times [2023-08-27 00:49:13,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:13,213 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169102241] [2023-08-27 00:49:13,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:13,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:13,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:13,299 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 00:49:13,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:13,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169102241] [2023-08-27 00:49:13,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169102241] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:13,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191155930] [2023-08-27 00:49:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:13,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:13,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:13,303 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 00:49:13,306 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 00:49:13,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:13,365 INFO L262 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:13,366 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:13,375 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 00:49:13,375 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:13,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191155930] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:13,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:13,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 00:49:13,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973885931] [2023-08-27 00:49:13,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:13,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:13,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:13,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:13,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:49:13,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:49:13,378 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 54 transitions, 208 flow. Second operand has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:13,378 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:13,378 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:49:13,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:16,570 INFO L124 PetriNetUnfolderBase]: 52238/62143 cut-off events. [2023-08-27 00:49:16,570 INFO L125 PetriNetUnfolderBase]: For 10075/10075 co-relation queries the response was YES. [2023-08-27 00:49:16,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158401 conditions, 62143 events. 52238/62143 cut-off events. For 10075/10075 co-relation queries the response was YES. Maximal size of possible extension queue 3734. Compared 291128 event pairs, 5706 based on Foata normal form. 1204/27410 useless extension candidates. Maximal degree in co-relation 82996. Up to 49602 conditions per place. [2023-08-27 00:49:16,873 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 82 selfloop transitions, 7 changer transitions 0/92 dead transitions. [2023-08-27 00:49:16,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 92 transitions, 457 flow [2023-08-27 00:49:16,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:49:16,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:49:16,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 552 transitions. [2023-08-27 00:49:16,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5168539325842697 [2023-08-27 00:49:16,876 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 552 transitions. [2023-08-27 00:49:16,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 552 transitions. [2023-08-27 00:49:16,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:16,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 552 transitions. [2023-08-27 00:49:16,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,880 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,880 INFO L175 Difference]: Start difference. First operand has 56 places, 54 transitions, 208 flow. Second operand 4 states and 552 transitions. [2023-08-27 00:49:16,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 92 transitions, 457 flow [2023-08-27 00:49:16,942 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 92 transitions, 443 flow, removed 4 selfloop flow, removed 2 redundant places. [2023-08-27 00:49:16,943 INFO L231 Difference]: Finished difference. Result has 55 places, 50 transitions, 181 flow [2023-08-27 00:49:16,943 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=55, PETRI_TRANSITIONS=50} [2023-08-27 00:49:16,945 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 1 predicate places. [2023-08-27 00:49:16,945 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 50 transitions, 181 flow [2023-08-27 00:49:16,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 118.25) internal successors, (473), 4 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:16,946 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:16,946 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:49:16,953 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-27 00:49:17,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-27 00:49:17,152 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:17,152 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:17,152 INFO L85 PathProgramCache]: Analyzing trace with hash 602040415, now seen corresponding path program 1 times [2023-08-27 00:49:17,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:17,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247912273] [2023-08-27 00:49:17,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:17,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:17,230 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 00:49:17,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247912273] [2023-08-27 00:49:17,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247912273] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:17,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760785238] [2023-08-27 00:49:17,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:17,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:17,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:17,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:17,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-27 00:49:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:17,410 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:17,410 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:17,425 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 00:49:17,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:49:17,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760785238] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:17,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:49:17,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 00:49:17,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089416376] [2023-08-27 00:49:17,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:17,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:49:17,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:17,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:49:17,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:49:17,427 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:49:17,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 50 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:17,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:17,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:49:17,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:20,548 INFO L124 PetriNetUnfolderBase]: 56638/68068 cut-off events. [2023-08-27 00:49:20,549 INFO L125 PetriNetUnfolderBase]: For 22960/22960 co-relation queries the response was YES. [2023-08-27 00:49:20,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 176684 conditions, 68068 events. 56638/68068 cut-off events. For 22960/22960 co-relation queries the response was YES. Maximal size of possible extension queue 4198. Compared 329981 event pairs, 10977 based on Foata normal form. 0/31373 useless extension candidates. Maximal degree in co-relation 87441. Up to 39065 conditions per place. [2023-08-27 00:49:20,836 INFO L140 encePairwiseOnDemand]: 258/267 looper letters, 74 selfloop transitions, 12 changer transitions 0/90 dead transitions. [2023-08-27 00:49:20,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 90 transitions, 496 flow [2023-08-27 00:49:20,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:49:20,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:49:20,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-08-27 00:49:20,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5224719101123596 [2023-08-27 00:49:20,838 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-08-27 00:49:20,838 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-08-27 00:49:20,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:20,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-08-27 00:49:20,840 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,842 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,842 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:20,842 INFO L175 Difference]: Start difference. First operand has 55 places, 50 transitions, 181 flow. Second operand 4 states and 558 transitions. [2023-08-27 00:49:20,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 90 transitions, 496 flow [2023-08-27 00:49:21,240 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 90 transitions, 483 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:49:21,242 INFO L231 Difference]: Finished difference. Result has 57 places, 59 transitions, 294 flow [2023-08-27 00:49:21,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=294, PETRI_PLACES=57, PETRI_TRANSITIONS=59} [2023-08-27 00:49:21,243 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 3 predicate places. [2023-08-27 00:49:21,243 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 59 transitions, 294 flow [2023-08-27 00:49:21,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 122.0) internal successors, (488), 4 states have internal predecessors, (488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:21,243 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 00:49:21,247 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-27 00:49:21,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:21,445 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:21,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:21,446 INFO L85 PathProgramCache]: Analyzing trace with hash 602040416, now seen corresponding path program 1 times [2023-08-27 00:49:21,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:21,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533819459] [2023-08-27 00:49:21,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:21,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:21,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:21,523 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 00:49:21,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533819459] [2023-08-27 00:49:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533819459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1965699468] [2023-08-27 00:49:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:21,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:21,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:21,527 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:21,551 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-27 00:49:21,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:21,596 INFO L262 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:49:21,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:21,608 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 00:49:21,608 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:21,625 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 00:49:21,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1965699468] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:49:21,625 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:49:21,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:49:21,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984475687] [2023-08-27 00:49:21,626 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:49:21,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:49:21,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:21,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:49:21,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:49:21,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:49:21,629 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 59 transitions, 294 flow. Second operand has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:21,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:21,630 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:49:21,630 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:27,292 INFO L124 PetriNetUnfolderBase]: 89795/108347 cut-off events. [2023-08-27 00:49:27,293 INFO L125 PetriNetUnfolderBase]: For 71111/71111 co-relation queries the response was YES. [2023-08-27 00:49:27,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317121 conditions, 108347 events. 89795/108347 cut-off events. For 71111/71111 co-relation queries the response was YES. Maximal size of possible extension queue 5750. Compared 554380 event pairs, 8873 based on Foata normal form. 10399/62884 useless extension candidates. Maximal degree in co-relation 79352. Up to 31703 conditions per place. [2023-08-27 00:49:27,788 INFO L140 encePairwiseOnDemand]: 259/267 looper letters, 171 selfloop transitions, 29 changer transitions 0/204 dead transitions. [2023-08-27 00:49:27,788 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 204 transitions, 1243 flow [2023-08-27 00:49:27,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:49:27,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:49:27,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 903 transitions. [2023-08-27 00:49:27,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5636704119850188 [2023-08-27 00:49:27,791 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 903 transitions. [2023-08-27 00:49:27,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 903 transitions. [2023-08-27 00:49:27,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:27,791 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 903 transitions. [2023-08-27 00:49:27,793 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 150.5) internal successors, (903), 6 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:27,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:27,796 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:27,796 INFO L175 Difference]: Start difference. First operand has 57 places, 59 transitions, 294 flow. Second operand 6 states and 903 transitions. [2023-08-27 00:49:27,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 204 transitions, 1243 flow [2023-08-27 00:49:28,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 204 transitions, 1164 flow, removed 39 selfloop flow, removed 1 redundant places. [2023-08-27 00:49:28,646 INFO L231 Difference]: Finished difference. Result has 65 places, 80 transitions, 586 flow [2023-08-27 00:49:28,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=586, PETRI_PLACES=65, PETRI_TRANSITIONS=80} [2023-08-27 00:49:28,647 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 11 predicate places. [2023-08-27 00:49:28,647 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 80 transitions, 586 flow [2023-08-27 00:49:28,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 122.57142857142857) internal successors, (858), 7 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:28,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:28,648 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:49:28,652 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-27 00:49:28,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:28,852 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thread2Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:28,852 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:28,852 INFO L85 PathProgramCache]: Analyzing trace with hash 580549468, now seen corresponding path program 1 times [2023-08-27 00:49:28,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:28,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489423997] [2023-08-27 00:49:28,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:28,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:28,913 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 00:49:28,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:28,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489423997] [2023-08-27 00:49:28,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489423997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:49:28,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:49:28,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:49:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [524887079] [2023-08-27 00:49:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:49:28,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:49:28,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:49:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:49:28,915 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:49:28,916 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 80 transitions, 586 flow. Second operand has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:28,916 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:28,916 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:49:28,916 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:49:34,910 INFO L124 PetriNetUnfolderBase]: 91989/112043 cut-off events. [2023-08-27 00:49:34,910 INFO L125 PetriNetUnfolderBase]: For 141178/141178 co-relation queries the response was YES. [2023-08-27 00:49:35,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340677 conditions, 112043 events. 91989/112043 cut-off events. For 141178/141178 co-relation queries the response was YES. Maximal size of possible extension queue 5980. Compared 590611 event pairs, 16988 based on Foata normal form. 0/55671 useless extension candidates. Maximal degree in co-relation 212552. Up to 100116 conditions per place. [2023-08-27 00:49:35,696 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 107 selfloop transitions, 5 changer transitions 0/115 dead transitions. [2023-08-27 00:49:35,696 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 115 transitions, 989 flow [2023-08-27 00:49:35,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:49:35,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:49:35,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 416 transitions. [2023-08-27 00:49:35,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.519350811485643 [2023-08-27 00:49:35,698 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 416 transitions. [2023-08-27 00:49:35,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 416 transitions. [2023-08-27 00:49:35,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:49:35,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 416 transitions. [2023-08-27 00:49:35,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.66666666666666) internal successors, (416), 3 states have internal predecessors, (416), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:35,700 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:35,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:35,700 INFO L175 Difference]: Start difference. First operand has 65 places, 80 transitions, 586 flow. Second operand 3 states and 416 transitions. [2023-08-27 00:49:35,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 115 transitions, 989 flow [2023-08-27 00:49:44,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 115 transitions, 941 flow, removed 24 selfloop flow, removed 0 redundant places. [2023-08-27 00:49:44,252 INFO L231 Difference]: Finished difference. Result has 68 places, 84 transitions, 615 flow [2023-08-27 00:49:44,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=548, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=615, PETRI_PLACES=68, PETRI_TRANSITIONS=84} [2023-08-27 00:49:44,253 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 14 predicate places. [2023-08-27 00:49:44,253 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 84 transitions, 615 flow [2023-08-27 00:49:44,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:44,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:49:44,253 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 00:49:44,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 00:49:44,254 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:49:44,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:49:44,254 INFO L85 PathProgramCache]: Analyzing trace with hash -394268083, now seen corresponding path program 2 times [2023-08-27 00:49:44,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:49:44,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203204108] [2023-08-27 00:49:44,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:49:44,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:49:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:49:44,316 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:49:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203204108] [2023-08-27 00:49:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203204108] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:49:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642496024] [2023-08-27 00:49:44,317 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:49:44,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:49:44,317 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:49:44,318 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:49:44,325 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-27 00:49:44,388 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:49:44,388 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:49:44,389 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:49:44,390 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:49:44,401 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:44,401 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:49:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:49:44,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [642496024] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:49:44,454 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:49:44,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-08-27 00:49:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401911557] [2023-08-27 00:49:44,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:49:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-27 00:49:44,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:49:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-27 00:49:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-08-27 00:49:44,458 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:49:44,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 84 transitions, 615 flow. Second operand has 12 states, 12 states have (on average 122.16666666666667) internal successors, (1466), 12 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:49:44,460 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:49:44,460 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:49:44,460 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:50:03,369 INFO L124 PetriNetUnfolderBase]: 256237/312325 cut-off events. [2023-08-27 00:50:03,370 INFO L125 PetriNetUnfolderBase]: For 437355/444699 co-relation queries the response was YES. [2023-08-27 00:50:03,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 949428 conditions, 312325 events. 256237/312325 cut-off events. For 437355/444699 co-relation queries the response was YES. Maximal size of possible extension queue 14375. Compared 1801539 event pairs, 17859 based on Foata normal form. 24344/172485 useless extension candidates. Maximal degree in co-relation 162083. Up to 56372 conditions per place. [2023-08-27 00:50:05,028 INFO L140 encePairwiseOnDemand]: 259/267 looper letters, 352 selfloop transitions, 132 changer transitions 0/488 dead transitions. [2023-08-27 00:50:05,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 488 transitions, 3446 flow [2023-08-27 00:50:05,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:50:05,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:50:05,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1839 transitions. [2023-08-27 00:50:05,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5739700374531835 [2023-08-27 00:50:05,032 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1839 transitions. [2023-08-27 00:50:05,032 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1839 transitions. [2023-08-27 00:50:05,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:50:05,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1839 transitions. [2023-08-27 00:50:05,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 153.25) internal successors, (1839), 12 states have internal predecessors, (1839), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:05,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:05,174 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:05,174 INFO L175 Difference]: Start difference. First operand has 68 places, 84 transitions, 615 flow. Second operand 12 states and 1839 transitions. [2023-08-27 00:50:05,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 488 transitions, 3446 flow [2023-08-27 00:50:25,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 488 transitions, 3424 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:50:25,872 INFO L231 Difference]: Finished difference. Result has 88 places, 192 transitions, 2329 flow [2023-08-27 00:50:25,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=610, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2329, PETRI_PLACES=88, PETRI_TRANSITIONS=192} [2023-08-27 00:50:25,873 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2023-08-27 00:50:25,873 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 192 transitions, 2329 flow [2023-08-27 00:50:25,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 122.16666666666667) internal successors, (1466), 12 states have internal predecessors, (1466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:25,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:50:25,874 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1] [2023-08-27 00:50:25,881 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-27 00:50:26,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:50:26,081 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thread1Err3ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:50:26,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:50:26,082 INFO L85 PathProgramCache]: Analyzing trace with hash -394268005, now seen corresponding path program 2 times [2023-08-27 00:50:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:50:26,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624806067] [2023-08-27 00:50:26,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:50:26,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:50:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:50:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:50:26,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:50:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624806067] [2023-08-27 00:50:26,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624806067] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:50:26,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1090526584] [2023-08-27 00:50:26,154 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:50:26,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:50:26,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:50:26,155 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:50:26,161 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-27 00:50:26,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-27 00:50:26,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:50:26,222 INFO L262 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:50:26,223 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:50:26,234 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-27 00:50:26,235 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:50:26,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1090526584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:50:26,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:50:26,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [6] total 7 [2023-08-27 00:50:26,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430855558] [2023-08-27 00:50:26,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:50:26,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:50:26,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:50:26,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:50:26,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2023-08-27 00:50:26,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 267 [2023-08-27 00:50:26,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 192 transitions, 2329 flow. Second operand has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:26,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:50:26,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 267 [2023-08-27 00:50:26,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:50:36,279 INFO L124 PetriNetUnfolderBase]: 113491/139344 cut-off events. [2023-08-27 00:50:36,280 INFO L125 PetriNetUnfolderBase]: For 392329/396697 co-relation queries the response was YES. [2023-08-27 00:50:36,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468133 conditions, 139344 events. 113491/139344 cut-off events. For 392329/396697 co-relation queries the response was YES. Maximal size of possible extension queue 5843. Compared 761862 event pairs, 58139 based on Foata normal form. 11233/85080 useless extension candidates. Maximal degree in co-relation 376025. Up to 139156 conditions per place. [2023-08-27 00:50:37,185 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 135 selfloop transitions, 1 changer transitions 0/140 dead transitions. [2023-08-27 00:50:37,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 140 transitions, 1917 flow [2023-08-27 00:50:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:50:37,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:50:37,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-08-27 00:50:37,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46941323345817726 [2023-08-27 00:50:37,188 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-08-27 00:50:37,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-08-27 00:50:37,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:50:37,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-08-27 00:50:37,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:37,190 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:37,190 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:37,190 INFO L175 Difference]: Start difference. First operand has 88 places, 192 transitions, 2329 flow. Second operand 3 states and 376 transitions. [2023-08-27 00:50:37,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 140 transitions, 1917 flow [2023-08-27 00:50:46,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 140 transitions, 1700 flow, removed 95 selfloop flow, removed 3 redundant places. [2023-08-27 00:50:46,098 INFO L231 Difference]: Finished difference. Result has 83 places, 140 transitions, 1430 flow [2023-08-27 00:50:46,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1428, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1430, PETRI_PLACES=83, PETRI_TRANSITIONS=140} [2023-08-27 00:50:46,099 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 29 predicate places. [2023-08-27 00:50:46,099 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 140 transitions, 1430 flow [2023-08-27 00:50:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.33333333333333) internal successors, (343), 3 states have internal predecessors, (343), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:46,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:50:46,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:50:46,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-27 00:50:46,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:50:46,301 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:50:46,301 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:50:46,301 INFO L85 PathProgramCache]: Analyzing trace with hash 585228453, now seen corresponding path program 1 times [2023-08-27 00:50:46,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:50:46,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237683028] [2023-08-27 00:50:46,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:50:46,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:50:46,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:50:46,344 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 00:50:46,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:50:46,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237683028] [2023-08-27 00:50:46,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237683028] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:50:46,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:50:46,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 00:50:46,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264220237] [2023-08-27 00:50:46,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:50:46,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:50:46,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:50:46,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:50:46,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:50:46,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:50:46,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 140 transitions, 1430 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:46,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:50:46,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:50:46,348 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:50:54,190 INFO L124 PetriNetUnfolderBase]: 93086/118931 cut-off events. [2023-08-27 00:50:54,190 INFO L125 PetriNetUnfolderBase]: For 418152/422600 co-relation queries the response was YES. [2023-08-27 00:50:54,755 INFO L83 FinitePrefix]: Finished finitePrefix Result has 398386 conditions, 118931 events. 93086/118931 cut-off events. For 418152/422600 co-relation queries the response was YES. Maximal size of possible extension queue 5107. Compared 691035 event pairs, 20186 based on Foata normal form. 4441/76846 useless extension candidates. Maximal degree in co-relation 398356. Up to 85837 conditions per place. [2023-08-27 00:50:55,166 INFO L140 encePairwiseOnDemand]: 259/267 looper letters, 258 selfloop transitions, 4 changer transitions 0/266 dead transitions. [2023-08-27 00:50:55,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 266 transitions, 3338 flow [2023-08-27 00:50:55,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:50:55,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:50:55,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-27 00:50:55,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2023-08-27 00:50:55,167 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-27 00:50:55,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-27 00:50:55,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:50:55,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-27 00:50:55,169 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:55,170 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:55,170 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:55,170 INFO L175 Difference]: Start difference. First operand has 83 places, 140 transitions, 1430 flow. Second operand 3 states and 423 transitions. [2023-08-27 00:50:55,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 266 transitions, 3338 flow [2023-08-27 00:50:57,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 266 transitions, 3317 flow, removed 10 selfloop flow, removed 1 redundant places. [2023-08-27 00:50:57,290 INFO L231 Difference]: Finished difference. Result has 86 places, 143 transitions, 1455 flow [2023-08-27 00:50:57,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1419, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1455, PETRI_PLACES=86, PETRI_TRANSITIONS=143} [2023-08-27 00:50:57,291 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 32 predicate places. [2023-08-27 00:50:57,291 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 143 transitions, 1455 flow [2023-08-27 00:50:57,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:57,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:50:57,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:50:57,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 00:50:57,292 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:50:57,292 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:50:57,292 INFO L85 PathProgramCache]: Analyzing trace with hash 962215436, now seen corresponding path program 1 times [2023-08-27 00:50:57,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:50:57,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72516217] [2023-08-27 00:50:57,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:50:57,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:50:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:50:57,331 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 00:50:57,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:50:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72516217] [2023-08-27 00:50:57,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72516217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:50:57,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180221433] [2023-08-27 00:50:57,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:50:57,332 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:50:57,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:50:57,339 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:50:57,340 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-27 00:50:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:50:57,408 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:50:57,409 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:50:57,423 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 00:50:57,423 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:50:57,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180221433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:50:57,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:50:57,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-27 00:50:57,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058099452] [2023-08-27 00:50:57,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:50:57,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:50:57,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:50:57,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:50:57,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:50:57,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:50:57,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 143 transitions, 1455 flow. Second operand has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:50:57,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:50:57,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:50:57,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:51:07,753 INFO L124 PetriNetUnfolderBase]: 112417/143164 cut-off events. [2023-08-27 00:51:07,754 INFO L125 PetriNetUnfolderBase]: For 486123/491415 co-relation queries the response was YES. [2023-08-27 00:51:08,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 526890 conditions, 143164 events. 112417/143164 cut-off events. For 486123/491415 co-relation queries the response was YES. Maximal size of possible extension queue 5386. Compared 842120 event pairs, 24927 based on Foata normal form. 13605/117018 useless extension candidates. Maximal degree in co-relation 526857. Up to 83454 conditions per place. [2023-08-27 00:51:08,918 INFO L140 encePairwiseOnDemand]: 259/267 looper letters, 257 selfloop transitions, 9 changer transitions 0/270 dead transitions. [2023-08-27 00:51:08,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 270 transitions, 3369 flow [2023-08-27 00:51:08,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:51:08,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:51:08,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 544 transitions. [2023-08-27 00:51:08,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5093632958801498 [2023-08-27 00:51:08,919 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 544 transitions. [2023-08-27 00:51:08,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 544 transitions. [2023-08-27 00:51:08,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:51:08,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 544 transitions. [2023-08-27 00:51:08,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.0) internal successors, (544), 4 states have internal predecessors, (544), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:08,922 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:08,922 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:08,922 INFO L175 Difference]: Start difference. First operand has 86 places, 143 transitions, 1455 flow. Second operand 4 states and 544 transitions. [2023-08-27 00:51:08,923 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 270 transitions, 3369 flow [2023-08-27 00:51:13,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 270 transitions, 3363 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:51:13,005 INFO L231 Difference]: Finished difference. Result has 88 places, 147 transitions, 1510 flow [2023-08-27 00:51:13,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1439, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1510, PETRI_PLACES=88, PETRI_TRANSITIONS=147} [2023-08-27 00:51:13,006 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 34 predicate places. [2023-08-27 00:51:13,006 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 147 transitions, 1510 flow [2023-08-27 00:51:13,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 123.0) internal successors, (492), 4 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:13,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:51:13,006 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:51:13,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-27 00:51:13,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:51:13,207 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thread3Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:51:13,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:51:13,207 INFO L85 PathProgramCache]: Analyzing trace with hash 962215478, now seen corresponding path program 1 times [2023-08-27 00:51:13,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:51:13,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190644262] [2023-08-27 00:51:13,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:51:13,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:51:13,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:51:13,250 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 00:51:13,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:51:13,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190644262] [2023-08-27 00:51:13,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190644262] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:51:13,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2137740226] [2023-08-27 00:51:13,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:51:13,251 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:51:13,251 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:51:13,252 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:51:13,258 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-27 00:51:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:51:13,323 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:51:13,324 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:51:13,333 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 00:51:13,333 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-27 00:51:13,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2137740226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:51:13,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-27 00:51:13,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 4 [2023-08-27 00:51:13,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851900839] [2023-08-27 00:51:13,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:51:13,334 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 00:51:13,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:51:13,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 00:51:13,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 00:51:13,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:51:13,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 147 transitions, 1510 flow. Second operand has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:13,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:51:13,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:51:13,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:51:21,741 INFO L124 PetriNetUnfolderBase]: 91751/118066 cut-off events. [2023-08-27 00:51:21,741 INFO L125 PetriNetUnfolderBase]: For 432057/436547 co-relation queries the response was YES. [2023-08-27 00:51:22,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483716 conditions, 118066 events. 91751/118066 cut-off events. For 432057/436547 co-relation queries the response was YES. Maximal size of possible extension queue 4311. Compared 693193 event pairs, 18625 based on Foata normal form. 4483/103289 useless extension candidates. Maximal degree in co-relation 483681. Up to 63262 conditions per place. [2023-08-27 00:51:22,942 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 380 selfloop transitions, 4 changer transitions 0/387 dead transitions. [2023-08-27 00:51:22,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 387 transitions, 5012 flow [2023-08-27 00:51:22,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 00:51:22,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 00:51:22,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 537 transitions. [2023-08-27 00:51:22,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5028089887640449 [2023-08-27 00:51:22,954 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 537 transitions. [2023-08-27 00:51:22,954 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 537 transitions. [2023-08-27 00:51:22,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:51:22,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 537 transitions. [2023-08-27 00:51:22,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:22,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:22,957 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:22,957 INFO L175 Difference]: Start difference. First operand has 88 places, 147 transitions, 1510 flow. Second operand 4 states and 537 transitions. [2023-08-27 00:51:22,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 387 transitions, 5012 flow [2023-08-27 00:51:26,792 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 387 transitions, 4995 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-08-27 00:51:26,795 INFO L231 Difference]: Finished difference. Result has 89 places, 145 transitions, 1487 flow [2023-08-27 00:51:26,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1477, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1487, PETRI_PLACES=89, PETRI_TRANSITIONS=145} [2023-08-27 00:51:26,796 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 35 predicate places. [2023-08-27 00:51:26,796 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 145 transitions, 1487 flow [2023-08-27 00:51:26,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 119.25) internal successors, (477), 4 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:26,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:51:26,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:51:26,801 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-27 00:51:26,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-27 00:51:26,997 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:51:26,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:51:26,997 INFO L85 PathProgramCache]: Analyzing trace with hash 962215437, now seen corresponding path program 1 times [2023-08-27 00:51:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:51:26,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2387847] [2023-08-27 00:51:26,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:51:26,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:51:27,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:51:27,030 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 00:51:27,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:51:27,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2387847] [2023-08-27 00:51:27,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2387847] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:51:27,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2105759885] [2023-08-27 00:51:27,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:51:27,031 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:51:27,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:51:27,032 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:51:27,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-27 00:51:27,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:51:27,219 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-27 00:51:27,220 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:51:27,233 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 00:51:27,233 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:51:27,252 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 00:51:27,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2105759885] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:51:27,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:51:27,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 5 [2023-08-27 00:51:27,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615903911] [2023-08-27 00:51:27,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:51:27,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 00:51:27,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:51:27,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 00:51:27,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-27 00:51:27,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:51:27,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 145 transitions, 1487 flow. Second operand has 7 states, 7 states have (on average 124.28571428571429) internal successors, (870), 7 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:27,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:51:27,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:51:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:51:46,741 INFO L124 PetriNetUnfolderBase]: 191659/246758 cut-off events. [2023-08-27 00:51:46,741 INFO L125 PetriNetUnfolderBase]: For 1028157/1037529 co-relation queries the response was YES. [2023-08-27 00:51:47,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 980755 conditions, 246758 events. 191659/246758 cut-off events. For 1028157/1037529 co-relation queries the response was YES. Maximal size of possible extension queue 8276. Compared 1561192 event pairs, 21425 based on Foata normal form. 23135/233610 useless extension candidates. Maximal degree in co-relation 980720. Up to 96665 conditions per place. [2023-08-27 00:51:48,784 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 635 selfloop transitions, 11 changer transitions 0/650 dead transitions. [2023-08-27 00:51:48,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 650 transitions, 8335 flow [2023-08-27 00:51:48,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 00:51:48,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 00:51:48,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 857 transitions. [2023-08-27 00:51:48,786 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5349563046192259 [2023-08-27 00:51:48,786 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 857 transitions. [2023-08-27 00:51:48,786 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 857 transitions. [2023-08-27 00:51:48,787 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:51:48,787 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 857 transitions. [2023-08-27 00:51:48,788 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 142.83333333333334) internal successors, (857), 6 states have internal predecessors, (857), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:48,790 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:48,790 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 267.0) internal successors, (1869), 7 states have internal predecessors, (1869), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:48,791 INFO L175 Difference]: Start difference. First operand has 89 places, 145 transitions, 1487 flow. Second operand 6 states and 857 transitions. [2023-08-27 00:51:48,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 650 transitions, 8335 flow [2023-08-27 00:51:55,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 650 transitions, 8324 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 00:51:55,748 INFO L231 Difference]: Finished difference. Result has 96 places, 154 transitions, 1610 flow [2023-08-27 00:51:55,748 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1610, PETRI_PLACES=96, PETRI_TRANSITIONS=154} [2023-08-27 00:51:55,749 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 42 predicate places. [2023-08-27 00:51:55,749 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 154 transitions, 1610 flow [2023-08-27 00:51:55,749 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 124.28571428571429) internal successors, (870), 7 states have internal predecessors, (870), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:55,749 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:51:55,749 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:51:55,753 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-27 00:51:55,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-27 00:51:55,950 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting thread2Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:51:55,950 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:51:55,950 INFO L85 PathProgramCache]: Analyzing trace with hash -595493718, now seen corresponding path program 1 times [2023-08-27 00:51:55,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:51:55,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588060450] [2023-08-27 00:51:55,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:51:55,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:51:55,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:51:55,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:51:55,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:51:55,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588060450] [2023-08-27 00:51:55,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588060450] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:51:55,983 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:51:55,983 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:51:55,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038982958] [2023-08-27 00:51:55,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:51:55,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:51:55,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:51:55,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:51:55,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:51:55,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:51:55,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 154 transitions, 1610 flow. Second operand has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:51:55,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:51:55,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:51:55,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:52:13,389 INFO L124 PetriNetUnfolderBase]: 160691/207296 cut-off events. [2023-08-27 00:52:13,389 INFO L125 PetriNetUnfolderBase]: For 884798/886160 co-relation queries the response was YES. [2023-08-27 00:52:14,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 888774 conditions, 207296 events. 160691/207296 cut-off events. For 884798/886160 co-relation queries the response was YES. Maximal size of possible extension queue 6379. Compared 1290908 event pairs, 47752 based on Foata normal form. 92/192200 useless extension candidates. Maximal degree in co-relation 888735. Up to 109055 conditions per place. [2023-08-27 00:52:15,016 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 208 selfloop transitions, 3 changer transitions 0/214 dead transitions. [2023-08-27 00:52:15,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 214 transitions, 2626 flow [2023-08-27 00:52:15,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:52:15,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:52:15,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 400 transitions. [2023-08-27 00:52:15,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4993757802746567 [2023-08-27 00:52:15,018 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 400 transitions. [2023-08-27 00:52:15,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 400 transitions. [2023-08-27 00:52:15,018 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:52:15,018 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 400 transitions. [2023-08-27 00:52:15,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 133.33333333333334) internal successors, (400), 3 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:15,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:15,020 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:15,020 INFO L175 Difference]: Start difference. First operand has 96 places, 154 transitions, 1610 flow. Second operand 3 states and 400 transitions. [2023-08-27 00:52:15,020 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 214 transitions, 2626 flow [2023-08-27 00:52:36,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 214 transitions, 2618 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-27 00:52:36,317 INFO L231 Difference]: Finished difference. Result has 97 places, 132 transitions, 1356 flow [2023-08-27 00:52:36,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1356, PETRI_PLACES=97, PETRI_TRANSITIONS=132} [2023-08-27 00:52:36,318 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 43 predicate places. [2023-08-27 00:52:36,318 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 132 transitions, 1356 flow [2023-08-27 00:52:36,318 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 120.0) internal successors, (360), 3 states have internal predecessors, (360), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:36,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:52:36,318 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:52:36,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 00:52:36,319 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting thread4Err2ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:52:36,319 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:52:36,319 INFO L85 PathProgramCache]: Analyzing trace with hash -242397719, now seen corresponding path program 1 times [2023-08-27 00:52:36,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:52:36,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369389223] [2023-08-27 00:52:36,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:52:36,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:52:36,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:52:36,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-27 00:52:36,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:52:36,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369389223] [2023-08-27 00:52:36,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369389223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 00:52:36,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 00:52:36,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 00:52:36,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113120738] [2023-08-27 00:52:36,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 00:52:36,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 00:52:36,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:52:36,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 00:52:36,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 00:52:36,354 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 267 [2023-08-27 00:52:36,354 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 132 transitions, 1356 flow. Second operand has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:36,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:52:36,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 267 [2023-08-27 00:52:36,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:52:54,418 INFO L124 PetriNetUnfolderBase]: 163411/213038 cut-off events. [2023-08-27 00:52:54,418 INFO L125 PetriNetUnfolderBase]: For 1157978/1169170 co-relation queries the response was YES. [2023-08-27 00:52:55,323 INFO L83 FinitePrefix]: Finished finitePrefix Result has 915683 conditions, 213038 events. 163411/213038 cut-off events. For 1157978/1169170 co-relation queries the response was YES. Maximal size of possible extension queue 5610. Compared 1333153 event pairs, 82243 based on Foata normal form. 11185/216160 useless extension candidates. Maximal degree in co-relation 915643. Up to 178639 conditions per place. [2023-08-27 00:52:56,129 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 232 selfloop transitions, 5 changer transitions 0/240 dead transitions. [2023-08-27 00:52:56,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 240 transitions, 3026 flow [2023-08-27 00:52:56,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 00:52:56,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 00:52:56,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 402 transitions. [2023-08-27 00:52:56,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50187265917603 [2023-08-27 00:52:56,130 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 402 transitions. [2023-08-27 00:52:56,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 402 transitions. [2023-08-27 00:52:56,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:52:56,131 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 402 transitions. [2023-08-27 00:52:56,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:56,132 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:56,133 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:52:56,133 INFO L175 Difference]: Start difference. First operand has 97 places, 132 transitions, 1356 flow. Second operand 3 states and 402 transitions. [2023-08-27 00:52:56,133 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 240 transitions, 3026 flow [2023-08-27 00:53:42,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 240 transitions, 3016 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 00:53:42,296 INFO L231 Difference]: Finished difference. Result has 98 places, 136 transitions, 1411 flow [2023-08-27 00:53:42,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1411, PETRI_PLACES=98, PETRI_TRANSITIONS=136} [2023-08-27 00:53:42,296 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 44 predicate places. [2023-08-27 00:53:42,296 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 136 transitions, 1411 flow [2023-08-27 00:53:42,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 121.0) internal successors, (363), 3 states have internal predecessors, (363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:53:42,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:53:42,296 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 00:53:42,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-27 00:53:42,297 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:53:42,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:53:42,297 INFO L85 PathProgramCache]: Analyzing trace with hash 750910117, now seen corresponding path program 2 times [2023-08-27 00:53:42,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:53:42,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421676459] [2023-08-27 00:53:42,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:53:42,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:53:42,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:53:42,355 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:53:42,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:53:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421676459] [2023-08-27 00:53:42,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421676459] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:53:42,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551170216] [2023-08-27 00:53:42,355 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 00:53:42,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:53:42,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:53:42,361 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:53:42,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-27 00:53:42,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 00:53:42,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:53:42,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-27 00:53:42,458 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:53:42,480 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:53:42,480 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:53:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:53:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551170216] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:53:42,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:53:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-27 00:53:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045191074] [2023-08-27 00:53:42,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:53:42,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-27 00:53:42,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:53:42,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-27 00:53:42,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-08-27 00:53:42,531 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:53:42,532 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 136 transitions, 1411 flow. Second operand has 13 states, 13 states have (on average 123.23076923076923) internal successors, (1602), 13 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:53:42,533 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:53:42,533 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:53:42,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 00:54:37,754 INFO L124 PetriNetUnfolderBase]: 418711/547398 cut-off events. [2023-08-27 00:54:37,755 INFO L125 PetriNetUnfolderBase]: For 3718553/3772603 co-relation queries the response was YES. [2023-08-27 00:54:40,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2402613 conditions, 547398 events. 418711/547398 cut-off events. For 3718553/3772603 co-relation queries the response was YES. Maximal size of possible extension queue 14093. Compared 3811775 event pairs, 33871 based on Foata normal form. 116455/633718 useless extension candidates. Maximal degree in co-relation 2402572. Up to 95399 conditions per place. [2023-08-27 00:54:42,699 INFO L140 encePairwiseOnDemand]: 261/267 looper letters, 1144 selfloop transitions, 72 changer transitions 0/1220 dead transitions. [2023-08-27 00:54:42,700 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 1220 transitions, 15678 flow [2023-08-27 00:54:42,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-27 00:54:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-27 00:54:42,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1722 transitions. [2023-08-27 00:54:42,702 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5374531835205992 [2023-08-27 00:54:42,702 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1722 transitions. [2023-08-27 00:54:42,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1722 transitions. [2023-08-27 00:54:42,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 00:54:42,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1722 transitions. [2023-08-27 00:54:42,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 143.5) internal successors, (1722), 12 states have internal predecessors, (1722), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:54:42,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:54:42,711 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 267.0) internal successors, (3471), 13 states have internal predecessors, (3471), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:54:42,711 INFO L175 Difference]: Start difference. First operand has 98 places, 136 transitions, 1411 flow. Second operand 12 states and 1722 transitions. [2023-08-27 00:54:42,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 1220 transitions, 15678 flow [2023-08-27 00:55:06,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 1220 transitions, 15656 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 00:55:06,134 INFO L231 Difference]: Finished difference. Result has 118 places, 200 transitions, 2412 flow [2023-08-27 00:55:06,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2412, PETRI_PLACES=118, PETRI_TRANSITIONS=200} [2023-08-27 00:55:06,135 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 64 predicate places. [2023-08-27 00:55:06,135 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 200 transitions, 2412 flow [2023-08-27 00:55:06,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 123.23076923076923) internal successors, (1602), 13 states have internal predecessors, (1602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:55:06,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 00:55:06,136 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 1, 1, 1, 1] [2023-08-27 00:55:06,139 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-08-27 00:55:06,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-27 00:55:06,336 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err2ASSERT_VIOLATIONINTEGER_OVERFLOW (and 34 more)] === [2023-08-27 00:55:06,337 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 00:55:06,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1959974547, now seen corresponding path program 3 times [2023-08-27 00:55:06,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 00:55:06,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819523957] [2023-08-27 00:55:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 00:55:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 00:55:06,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 00:55:06,469 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:55:06,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 00:55:06,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819523957] [2023-08-27 00:55:06,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819523957] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 00:55:06,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784120638] [2023-08-27 00:55:06,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 00:55:06,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 00:55:06,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 00:55:06,470 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-27 00:55:06,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-27 00:55:06,561 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-27 00:55:06,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 00:55:06,562 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-27 00:55:06,564 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 00:55:06,594 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:55:06,594 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 00:55:06,758 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 00:55:06,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [784120638] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 00:55:06,758 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 00:55:06,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 23 [2023-08-27 00:55:06,758 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910040858] [2023-08-27 00:55:06,758 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 00:55:06,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-08-27 00:55:06,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 00:55:06,759 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-08-27 00:55:06,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-08-27 00:55:06,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 267 [2023-08-27 00:55:06,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 200 transitions, 2412 flow. Second operand has 25 states, 25 states have (on average 122.16) internal successors, (3054), 25 states have internal predecessors, (3054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 00:55:06,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 00:55:06,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 267 [2023-08-27 00:55:06,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand