/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 08:47:25,328 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 08:47:25,385 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 08:47:25,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 08:47:25,389 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 08:47:25,408 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 08:47:25,409 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 08:47:25,409 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 08:47:25,410 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 08:47:25,413 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 08:47:25,413 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 08:47:25,414 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 08:47:25,414 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 08:47:25,414 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 08:47:25,414 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 08:47:25,414 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 08:47:25,415 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 08:47:25,415 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 08:47:25,415 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 08:47:25,415 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 08:47:25,416 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 08:47:25,417 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 08:47:25,418 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 08:47:25,418 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 08:47:25,418 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 08:47:25,419 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 08:47:25,419 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 08:47:25,419 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:47:25,419 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 08:47:25,419 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 08:47:25,420 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 08:47:25,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 08:47:25,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 08:47:25,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 08:47:25,421 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 08:47:25,421 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 08:47:25,732 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 08:47:25,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 08:47:25,750 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 08:47:25,751 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 08:47:25,751 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 08:47:25,753 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-27 08:47:26,975 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 08:47:27,218 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 08:47:27,219 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-hard1.wvr.c [2023-08-27 08:47:27,227 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57b91df2/37e3fa1e851d433889b0732312211ddf/FLAG191c7ff5a [2023-08-27 08:47:27,242 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c57b91df2/37e3fa1e851d433889b0732312211ddf [2023-08-27 08:47:27,247 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 08:47:27,249 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 08:47:27,252 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 08:47:27,252 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 08:47:27,255 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 08:47:27,256 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,257 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@76b50c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27, skipping insertion in model container [2023-08-27 08:47:27,257 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,284 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 08:47:27,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:47:27,483 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 08:47:27,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 08:47:27,527 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:47:27,528 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 08:47:27,534 INFO L206 MainTranslator]: Completed translation [2023-08-27 08:47:27,536 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27 WrapperNode [2023-08-27 08:47:27,536 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 08:47:27,537 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 08:47:27,537 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 08:47:27,537 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 08:47:27,543 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,561 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,587 INFO L138 Inliner]: procedures = 24, calls = 57, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 100 [2023-08-27 08:47:27,588 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 08:47:27,588 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 08:47:27,588 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 08:47:27,589 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 08:47:27,599 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,599 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,605 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,605 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,610 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,613 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,615 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,616 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,618 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 08:47:27,619 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 08:47:27,619 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 08:47:27,619 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 08:47:27,620 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (1/1) ... [2023-08-27 08:47:27,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 08:47:27,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:27,659 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 08:47:27,669 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 08:47:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 08:47:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-27 08:47:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-27 08:47:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-27 08:47:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-27 08:47:27,685 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-27 08:47:27,685 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-27 08:47:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 08:47:27,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 08:47:27,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 08:47:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-27 08:47:27,687 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 08:47:27,690 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 08:47:27,779 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 08:47:27,781 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 08:47:28,111 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 08:47:28,188 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 08:47:28,188 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-27 08:47:28,190 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:47:28 BoogieIcfgContainer [2023-08-27 08:47:28,190 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 08:47:28,192 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 08:47:28,192 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 08:47:28,195 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 08:47:28,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 08:47:27" (1/3) ... [2023-08-27 08:47:28,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee92352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:47:28, skipping insertion in model container [2023-08-27 08:47:28,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 08:47:27" (2/3) ... [2023-08-27 08:47:28,196 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee92352 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 08:47:28, skipping insertion in model container [2023-08-27 08:47:28,196 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 08:47:28" (3/3) ... [2023-08-27 08:47:28,197 INFO L112 eAbstractionObserver]: Analyzing ICFG test-hard1.wvr.c [2023-08-27 08:47:28,210 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 08:47:28,210 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2023-08-27 08:47:28,210 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 08:47:28,298 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-27 08:47:28,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 142 transitions, 316 flow [2023-08-27 08:47:28,383 INFO L124 PetriNetUnfolderBase]: 10/138 cut-off events. [2023-08-27 08:47:28,383 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 08:47:28,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 10/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 117 event pairs, 0 based on Foata normal form. 0/119 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-27 08:47:28,388 INFO L82 GeneralOperation]: Start removeDead. Operand has 145 places, 142 transitions, 316 flow [2023-08-27 08:47:28,392 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 128 places, 125 transitions, 274 flow [2023-08-27 08:47:28,395 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 08:47:28,406 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 128 places, 125 transitions, 274 flow [2023-08-27 08:47:28,412 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 128 places, 125 transitions, 274 flow [2023-08-27 08:47:28,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 128 places, 125 transitions, 274 flow [2023-08-27 08:47:28,459 INFO L124 PetriNetUnfolderBase]: 10/125 cut-off events. [2023-08-27 08:47:28,460 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-27 08:47:28,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142 conditions, 125 events. 10/125 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 116 event pairs, 0 based on Foata normal form. 0/107 useless extension candidates. Maximal degree in co-relation 98. Up to 2 conditions per place. [2023-08-27 08:47:28,463 INFO L119 LiptonReduction]: Number of co-enabled transitions 2520 [2023-08-27 08:47:32,238 INFO L134 LiptonReduction]: Checked pairs total: 4840 [2023-08-27 08:47:32,238 INFO L136 LiptonReduction]: Total number of compositions: 103 [2023-08-27 08:47:32,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 08:47:32,255 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;@25f7f6f5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 08:47:32,255 INFO L358 AbstractCegarLoop]: Starting to check reachability of 21 error locations. [2023-08-27 08:47:32,258 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 08:47:32,258 INFO L124 PetriNetUnfolderBase]: 1/7 cut-off events. [2023-08-27 08:47:32,258 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:47:32,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:32,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:47:32,259 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:32,263 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:32,263 INFO L85 PathProgramCache]: Analyzing trace with hash 17773958, now seen corresponding path program 1 times [2023-08-27 08:47:32,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:32,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1565788947] [2023-08-27 08:47:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:32,394 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 08:47:32,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:32,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1565788947] [2023-08-27 08:47:32,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1565788947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:32,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:32,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:32,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245572698] [2023-08-27 08:47:32,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:32,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-27 08:47:32,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:32,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-27 08:47:32,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-27 08:47:32,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 245 [2023-08-27 08:47:32,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 106 flow. Second operand has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:32,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:32,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 245 [2023-08-27 08:47:32,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:32,828 INFO L124 PetriNetUnfolderBase]: 2050/2986 cut-off events. [2023-08-27 08:47:32,828 INFO L125 PetriNetUnfolderBase]: For 85/85 co-relation queries the response was YES. [2023-08-27 08:47:32,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6063 conditions, 2986 events. 2050/2986 cut-off events. For 85/85 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 16565 event pairs, 1965 based on Foata normal form. 0/1502 useless extension candidates. Maximal degree in co-relation 4942. Up to 2817 conditions per place. [2023-08-27 08:47:32,858 INFO L140 encePairwiseOnDemand]: 241/245 looper letters, 29 selfloop transitions, 0 changer transitions 0/37 dead transitions. [2023-08-27 08:47:32,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 156 flow [2023-08-27 08:47:32,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-27 08:47:32,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-27 08:47:32,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 263 transitions. [2023-08-27 08:47:32,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.536734693877551 [2023-08-27 08:47:32,875 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 263 transitions. [2023-08-27 08:47:32,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 263 transitions. [2023-08-27 08:47:32,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:32,881 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 263 transitions. [2023-08-27 08:47:32,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 131.5) internal successors, (263), 2 states have internal predecessors, (263), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:32,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:32,889 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 245.0) internal successors, (735), 3 states have internal predecessors, (735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:32,890 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 106 flow. Second operand 2 states and 263 transitions. [2023-08-27 08:47:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 156 flow [2023-08-27 08:47:32,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 140 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-27 08:47:32,901 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 82 flow [2023-08-27 08:47:32,903 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=82, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2023-08-27 08:47:32,906 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-08-27 08:47:32,907 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 82 flow [2023-08-27 08:47:32,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:32,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:32,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-27 08:47:32,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 08:47:32,908 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:32,916 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:32,916 INFO L85 PathProgramCache]: Analyzing trace with hash 17773959, now seen corresponding path program 1 times [2023-08-27 08:47:32,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:32,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810632222] [2023-08-27 08:47:32,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:32,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:32,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:33,061 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 08:47:33,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:33,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810632222] [2023-08-27 08:47:33,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810632222] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:33,062 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:33,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:33,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122239479] [2023-08-27 08:47:33,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:33,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:33,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:33,065 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2023-08-27 08:47:33,065 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 82 flow. Second operand has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,065 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:33,065 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2023-08-27 08:47:33,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:33,303 INFO L124 PetriNetUnfolderBase]: 2407/3330 cut-off events. [2023-08-27 08:47:33,303 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 08:47:33,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6604 conditions, 3330 events. 2407/3330 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 281. Compared 16194 event pairs, 1965 based on Foata normal form. 0/2212 useless extension candidates. Maximal degree in co-relation 6601. Up to 3186 conditions per place. [2023-08-27 08:47:33,326 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 30 selfloop transitions, 1 changer transitions 0/35 dead transitions. [2023-08-27 08:47:33,326 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 140 flow [2023-08-27 08:47:33,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:33,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:33,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 357 transitions. [2023-08-27 08:47:33,329 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4857142857142857 [2023-08-27 08:47:33,329 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 357 transitions. [2023-08-27 08:47:33,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 357 transitions. [2023-08-27 08:47:33,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:33,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 357 transitions. [2023-08-27 08:47:33,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.0) internal successors, (357), 3 states have internal predecessors, (357), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,332 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,333 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,333 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 82 flow. Second operand 3 states and 357 transitions. [2023-08-27 08:47:33,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 140 flow [2023-08-27 08:47:33,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 140 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 08:47:33,334 INFO L231 Difference]: Finished difference. Result has 39 places, 35 transitions, 80 flow [2023-08-27 08:47:33,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=80, PETRI_PLACES=39, PETRI_TRANSITIONS=35} [2023-08-27 08:47:33,335 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -11 predicate places. [2023-08-27 08:47:33,335 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 35 transitions, 80 flow [2023-08-27 08:47:33,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.33333333333333) internal successors, (328), 3 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,336 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:33,336 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:33,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 08:47:33,336 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:33,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:33,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1159756599, now seen corresponding path program 1 times [2023-08-27 08:47:33,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:33,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852938827] [2023-08-27 08:47:33,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:33,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:33,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:33,494 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 08:47:33,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:33,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852938827] [2023-08-27 08:47:33,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852938827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:33,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:33,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:33,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138495653] [2023-08-27 08:47:33,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:33,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:33,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:33,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 245 [2023-08-27 08:47:33,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 35 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:33,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 245 [2023-08-27 08:47:33,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:33,692 INFO L124 PetriNetUnfolderBase]: 1345/1872 cut-off events. [2023-08-27 08:47:33,693 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-27 08:47:33,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3790 conditions, 1872 events. 1345/1872 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8025 event pairs, 1113 based on Foata normal form. 0/1355 useless extension candidates. Maximal degree in co-relation 3786. Up to 1864 conditions per place. [2023-08-27 08:47:33,703 INFO L140 encePairwiseOnDemand]: 242/245 looper letters, 28 selfloop transitions, 1 changer transitions 0/33 dead transitions. [2023-08-27 08:47:33,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 134 flow [2023-08-27 08:47:33,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 355 transitions. [2023-08-27 08:47:33,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48299319727891155 [2023-08-27 08:47:33,705 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 355 transitions. [2023-08-27 08:47:33,705 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 355 transitions. [2023-08-27 08:47:33,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:33,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 355 transitions. [2023-08-27 08:47:33,706 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.33333333333333) internal successors, (355), 3 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,708 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,709 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,709 INFO L175 Difference]: Start difference. First operand has 39 places, 35 transitions, 80 flow. Second operand 3 states and 355 transitions. [2023-08-27 08:47:33,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 134 flow [2023-08-27 08:47:33,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 133 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:47:33,711 INFO L231 Difference]: Finished difference. Result has 38 places, 33 transitions, 77 flow [2023-08-27 08:47:33,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=38, PETRI_TRANSITIONS=33} [2023-08-27 08:47:33,712 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -12 predicate places. [2023-08-27 08:47:33,712 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 33 transitions, 77 flow [2023-08-27 08:47:33,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:33,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:33,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:33,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 08:47:33,712 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:33,717 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:33,717 INFO L85 PathProgramCache]: Analyzing trace with hash -1231370885, now seen corresponding path program 1 times [2023-08-27 08:47:33,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:33,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622437272] [2023-08-27 08:47:33,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:33,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:34,021 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 08:47:34,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:34,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622437272] [2023-08-27 08:47:34,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622437272] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:34,023 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:34,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 08:47:34,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051502589] [2023-08-27 08:47:34,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:34,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 08:47:34,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:34,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 08:47:34,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 08:47:34,026 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 245 [2023-08-27 08:47:34,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 33 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:34,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:34,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 245 [2023-08-27 08:47:34,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:34,224 INFO L124 PetriNetUnfolderBase]: 1537/2184 cut-off events. [2023-08-27 08:47:34,224 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-27 08:47:34,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4180 conditions, 2184 events. 1537/2184 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9229 event pairs, 141 based on Foata normal form. 1/1367 useless extension candidates. Maximal degree in co-relation 4176. Up to 1733 conditions per place. [2023-08-27 08:47:34,239 INFO L140 encePairwiseOnDemand]: 239/245 looper letters, 41 selfloop transitions, 5 changer transitions 1/55 dead transitions. [2023-08-27 08:47:34,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 222 flow [2023-08-27 08:47:34,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 08:47:34,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 08:47:34,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 375 transitions. [2023-08-27 08:47:34,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102040816326531 [2023-08-27 08:47:34,241 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 375 transitions. [2023-08-27 08:47:34,241 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 375 transitions. [2023-08-27 08:47:34,242 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:34,242 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 375 transitions. [2023-08-27 08:47:34,243 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.0) internal successors, (375), 3 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:34,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:34,245 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 245.0) internal successors, (980), 4 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:34,245 INFO L175 Difference]: Start difference. First operand has 38 places, 33 transitions, 77 flow. Second operand 3 states and 375 transitions. [2023-08-27 08:47:34,245 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 222 flow [2023-08-27 08:47:34,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 55 transitions, 221 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:47:34,246 INFO L231 Difference]: Finished difference. Result has 40 places, 37 transitions, 109 flow [2023-08-27 08:47:34,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=76, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=109, PETRI_PLACES=40, PETRI_TRANSITIONS=37} [2023-08-27 08:47:34,247 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -10 predicate places. [2023-08-27 08:47:34,247 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 37 transitions, 109 flow [2023-08-27 08:47:34,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:34,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:34,248 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:34,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 08:47:34,248 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:34,248 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash 801559637, now seen corresponding path program 1 times [2023-08-27 08:47:34,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:34,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203217684] [2023-08-27 08:47:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:34,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:34,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:34,505 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 08:47:34,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:34,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203217684] [2023-08-27 08:47:34,506 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203217684] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:34,506 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:34,506 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:34,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35790243] [2023-08-27 08:47:34,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:34,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:34,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:34,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 08:47:34,509 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 37 transitions, 109 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:34,509 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:34,509 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 08:47:34,509 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:35,002 INFO L124 PetriNetUnfolderBase]: 2729/3838 cut-off events. [2023-08-27 08:47:35,003 INFO L125 PetriNetUnfolderBase]: For 956/956 co-relation queries the response was YES. [2023-08-27 08:47:35,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9118 conditions, 3838 events. 2729/3838 cut-off events. For 956/956 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 19558 event pairs, 856 based on Foata normal form. 40/3874 useless extension candidates. Maximal degree in co-relation 9113. Up to 1800 conditions per place. [2023-08-27 08:47:35,032 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 88 selfloop transitions, 9 changer transitions 0/101 dead transitions. [2023-08-27 08:47:35,032 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 101 transitions, 492 flow [2023-08-27 08:47:35,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:47:35,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:47:35,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 606 transitions. [2023-08-27 08:47:35,034 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4946938775510204 [2023-08-27 08:47:35,034 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 606 transitions. [2023-08-27 08:47:35,034 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 606 transitions. [2023-08-27 08:47:35,035 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:35,035 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 606 transitions. [2023-08-27 08:47:35,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.2) internal successors, (606), 5 states have internal predecessors, (606), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:35,038 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:35,039 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:35,039 INFO L175 Difference]: Start difference. First operand has 40 places, 37 transitions, 109 flow. Second operand 5 states and 606 transitions. [2023-08-27 08:47:35,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 101 transitions, 492 flow [2023-08-27 08:47:35,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 101 transitions, 479 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:47:35,043 INFO L231 Difference]: Finished difference. Result has 46 places, 43 transitions, 168 flow [2023-08-27 08:47:35,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=168, PETRI_PLACES=46, PETRI_TRANSITIONS=43} [2023-08-27 08:47:35,045 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, -4 predicate places. [2023-08-27 08:47:35,045 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 43 transitions, 168 flow [2023-08-27 08:47:35,045 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:35,045 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:35,045 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:35,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 08:47:35,046 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:35,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:35,046 INFO L85 PathProgramCache]: Analyzing trace with hash -432930337, now seen corresponding path program 2 times [2023-08-27 08:47:35,046 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:35,046 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370888697] [2023-08-27 08:47:35,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:35,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:35,429 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 08:47:35,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370888697] [2023-08-27 08:47:35,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370888697] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:35,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176770766] [2023-08-27 08:47:35,430 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-27 08:47:35,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:35,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:35,433 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 08:47:35,443 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 08:47:35,550 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-27 08:47:35,550 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:35,560 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 17 conjunts are in the unsatisfiable core [2023-08-27 08:47:35,565 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:35,807 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 08:47:35,807 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:36,066 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 08:47:36,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176770766] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:36,067 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:36,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 14 [2023-08-27 08:47:36,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [565126004] [2023-08-27 08:47:36,067 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:36,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-27 08:47:36,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:36,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-27 08:47:36,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2023-08-27 08:47:36,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 245 [2023-08-27 08:47:36,072 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 43 transitions, 168 flow. Second operand has 15 states, 15 states have (on average 97.4) internal successors, (1461), 15 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:36,072 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:36,072 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 245 [2023-08-27 08:47:36,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:39,198 INFO L124 PetriNetUnfolderBase]: 21095/28358 cut-off events. [2023-08-27 08:47:39,199 INFO L125 PetriNetUnfolderBase]: For 20495/20495 co-relation queries the response was YES. [2023-08-27 08:47:39,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77707 conditions, 28358 events. 21095/28358 cut-off events. For 20495/20495 co-relation queries the response was YES. Maximal size of possible extension queue 916. Compared 150419 event pairs, 350 based on Foata normal form. 840/29198 useless extension candidates. Maximal degree in co-relation 77699. Up to 7785 conditions per place. [2023-08-27 08:47:39,387 INFO L140 encePairwiseOnDemand]: 233/245 looper letters, 407 selfloop transitions, 127 changer transitions 3/537 dead transitions. [2023-08-27 08:47:39,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 537 transitions, 3055 flow [2023-08-27 08:47:39,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-27 08:47:39,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-27 08:47:39,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2610 transitions. [2023-08-27 08:47:39,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4631765749778172 [2023-08-27 08:47:39,395 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2610 transitions. [2023-08-27 08:47:39,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2610 transitions. [2023-08-27 08:47:39,396 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:39,396 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2610 transitions. [2023-08-27 08:47:39,402 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 113.47826086956522) internal successors, (2610), 23 states have internal predecessors, (2610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:39,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:39,410 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 245.0) internal successors, (5880), 24 states have internal predecessors, (5880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:39,410 INFO L175 Difference]: Start difference. First operand has 46 places, 43 transitions, 168 flow. Second operand 23 states and 2610 transitions. [2023-08-27 08:47:39,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 537 transitions, 3055 flow [2023-08-27 08:47:39,469 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 537 transitions, 2983 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 08:47:39,475 INFO L231 Difference]: Finished difference. Result has 81 places, 199 transitions, 1511 flow [2023-08-27 08:47:39,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1511, PETRI_PLACES=81, PETRI_TRANSITIONS=199} [2023-08-27 08:47:39,477 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 31 predicate places. [2023-08-27 08:47:39,477 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 199 transitions, 1511 flow [2023-08-27 08:47:39,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.4) internal successors, (1461), 15 states have internal predecessors, (1461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:39,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:39,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:39,488 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 08:47:39,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-27 08:47:39,679 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:39,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:39,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1918713104, now seen corresponding path program 1 times [2023-08-27 08:47:39,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:39,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633141194] [2023-08-27 08:47:39,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:39,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:39,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:39,993 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 08:47:39,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633141194] [2023-08-27 08:47:39,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633141194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:39,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:39,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:39,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168768413] [2023-08-27 08:47:39,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:39,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:39,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:39,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:39,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:39,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 08:47:39,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 199 transitions, 1511 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:39,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:39,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 08:47:39,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:41,099 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([486] L112-->L105-1: Formula: (and (not (= (mod v_thread4Thread1of1ForFork2_~cond~3_17 256) 0)) (or (and (= v_~n2~0_67 v_~n2~0_66) (<= v_~n2~0_67 1) (= v_~p2~0_64 v_~p2~0_63)) (and (<= v_~n2~0_67 2147483649) (= (+ v_~n2~0_66 2) v_~n2~0_67) (< 1 v_~n2~0_67) (= (+ (* v_~m~0_61 2) v_~p2~0_64) v_~p2~0_63)))) InVars {~m~0=v_~m~0_61, ~n2~0=v_~n2~0_67, ~p2~0=v_~p2~0_64, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} OutVars{~m~0=v_~m~0_61, ~n2~0=v_~n2~0_66, ~p2~0=v_~p2~0_63, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} AuxVars[] AssignedVars[~n2~0, ~p2~0][332], [Black: 351#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 357#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 371#(and (or (< 0 ~n2~0) (= (mod thread1Thread1of1ForFork1_~cond~0 256) 0) (and (or (< 0 ~n1~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (<= ~n1~0 0) (< 2147483648 ~n1~0)))) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 367#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), 170#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), Black: 355#(and (<= ~n2~0 2147483648) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 44#L48-1true, 157#(<= ~n2~0 2147483647), 134#L93true, 153#(<= ~n1~0 2147483647), 177#true, 393#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), 121#L132-4true, Black: 161#(= (+ ~p1~0 (* (div ~p2~0 4294967296) 4294967296)) (+ (* (div ~p1~0 4294967296) 4294967296) ~p2~0)), 148#true, 52#thread2EXITtrue, Black: 172#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0) (<= thread1Thread1of1ForFork1_~cond~0 (* (div thread1Thread1of1ForFork1_~cond~0 256) 256)) (< 0 (+ (div thread1Thread1of1ForFork1_~cond~0 256) 1))), Black: 166#(or (and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)) (and (< 0 ~n1~0) (= thread2Thread1of1ForFork3_~cond~1 1))), Black: 369#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 361#(and (<= ~n2~0 2147483648) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 314#(or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), 31#L105-1true, Black: 373#(and (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 219#(= thread3Thread1of1ForFork0_~cond~2 1), Black: 365#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 182#(and (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 353#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))))]) [2023-08-27 08:47:41,099 INFO L294 olderBase$Statistics]: this new event has 17 ancestors and is cut-off event [2023-08-27 08:47:41,100 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 08:47:41,100 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 08:47:41,101 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2023-08-27 08:47:41,515 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([486] L112-->L105-1: Formula: (and (not (= (mod v_thread4Thread1of1ForFork2_~cond~3_17 256) 0)) (or (and (= v_~n2~0_67 v_~n2~0_66) (<= v_~n2~0_67 1) (= v_~p2~0_64 v_~p2~0_63)) (and (<= v_~n2~0_67 2147483649) (= (+ v_~n2~0_66 2) v_~n2~0_67) (< 1 v_~n2~0_67) (= (+ (* v_~m~0_61 2) v_~p2~0_64) v_~p2~0_63)))) InVars {~m~0=v_~m~0_61, ~n2~0=v_~n2~0_67, ~p2~0=v_~p2~0_64, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} OutVars{~m~0=v_~m~0_61, ~n2~0=v_~n2~0_66, ~p2~0=v_~p2~0_63, thread4Thread1of1ForFork2_~cond~3=v_thread4Thread1of1ForFork2_~cond~3_17} AuxVars[] AssignedVars[~n2~0, ~p2~0][332], [Black: 351#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 357#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 371#(and (or (< 0 ~n2~0) (= (mod thread1Thread1of1ForFork1_~cond~0 256) 0) (and (or (< 0 ~n1~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (<= ~n1~0 0) (< 2147483648 ~n1~0)))) (= thread3Thread1of1ForFork0_~cond~2 1)), 170#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), Black: 367#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 355#(and (<= ~n2~0 2147483648) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 44#L48-1true, 157#(<= ~n2~0 2147483647), 134#L93true, 153#(<= ~n1~0 2147483647), 177#true, 393#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)), 68#L133-1true, Black: 161#(= (+ ~p1~0 (* (div ~p2~0 4294967296) 4294967296)) (+ (* (div ~p1~0 4294967296) 4294967296) ~p2~0)), 148#true, 52#thread2EXITtrue, Black: 172#(and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0) (<= thread1Thread1of1ForFork1_~cond~0 (* (div thread1Thread1of1ForFork1_~cond~0 256) 256)) (< 0 (+ (div thread1Thread1of1ForFork1_~cond~0 256) 1))), Black: 166#(or (and (= thread2Thread1of1ForFork3_~cond~1 0) (<= ~n1~0 0)) (and (< 0 ~n1~0) (= thread2Thread1of1ForFork3_~cond~1 1))), Black: 369#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 361#(and (<= ~n2~0 2147483648) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), 31#L105-1true, Black: 314#(or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))), Black: 373#(and (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 219#(= thread3Thread1of1ForFork0_~cond~2 1), Black: 365#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))) (or (< 0 (mod thread3Thread1of1ForFork0_~cond~2 256)) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296)))), Black: 182#(and (< 0 ~n2~0) (= thread3Thread1of1ForFork0_~cond~2 1)), Black: 353#(and (or (< 0 ~n2~0) (<= ~n1~0 ~n2~0)) (or (and (<= ~n1~0 0) (= thread1Thread1of1ForFork1_~cond~0 0)) (and (< 0 ~n1~0) (= thread1Thread1of1ForFork1_~cond~0 1))) (or (< 0 ~n2~0) (= (mod ~p1~0 4294967296) (mod ~p2~0 4294967296))))]) [2023-08-27 08:47:41,515 INFO L294 olderBase$Statistics]: this new event has 18 ancestors and is cut-off event [2023-08-27 08:47:41,515 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 08:47:41,515 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 08:47:41,515 INFO L297 olderBase$Statistics]: existing Event has 18 ancestors and is cut-off event [2023-08-27 08:47:42,566 INFO L124 PetriNetUnfolderBase]: 17470/23996 cut-off events. [2023-08-27 08:47:42,567 INFO L125 PetriNetUnfolderBase]: For 116886/118723 co-relation queries the response was YES. [2023-08-27 08:47:42,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96036 conditions, 23996 events. 17470/23996 cut-off events. For 116886/118723 co-relation queries the response was YES. Maximal size of possible extension queue 1194. Compared 141728 event pairs, 2753 based on Foata normal form. 1710/25328 useless extension candidates. Maximal degree in co-relation 96015. Up to 10081 conditions per place. [2023-08-27 08:47:42,830 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 332 selfloop transitions, 102 changer transitions 0/452 dead transitions. [2023-08-27 08:47:42,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 452 transitions, 4164 flow [2023-08-27 08:47:42,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:47:42,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:47:42,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 725 transitions. [2023-08-27 08:47:42,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4931972789115646 [2023-08-27 08:47:42,833 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 725 transitions. [2023-08-27 08:47:42,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 725 transitions. [2023-08-27 08:47:42,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:42,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 725 transitions. [2023-08-27 08:47:42,835 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 120.83333333333333) internal successors, (725), 6 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:42,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:42,837 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:42,837 INFO L175 Difference]: Start difference. First operand has 81 places, 199 transitions, 1511 flow. Second operand 6 states and 725 transitions. [2023-08-27 08:47:42,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 452 transitions, 4164 flow [2023-08-27 08:47:43,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 452 transitions, 3750 flow, removed 195 selfloop flow, removed 1 redundant places. [2023-08-27 08:47:43,218 INFO L231 Difference]: Finished difference. Result has 88 places, 243 transitions, 2039 flow [2023-08-27 08:47:43,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1332, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2039, PETRI_PLACES=88, PETRI_TRANSITIONS=243} [2023-08-27 08:47:43,219 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 38 predicate places. [2023-08-27 08:47:43,219 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 243 transitions, 2039 flow [2023-08-27 08:47:43,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:43,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:43,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:43,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 08:47:43,220 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:43,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:43,220 INFO L85 PathProgramCache]: Analyzing trace with hash 769178735, now seen corresponding path program 3 times [2023-08-27 08:47:43,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:43,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989538238] [2023-08-27 08:47:43,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:43,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:43,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:43,569 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 08:47:43,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989538238] [2023-08-27 08:47:43,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1989538238] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-27 08:47:43,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419842735] [2023-08-27 08:47:43,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-27 08:47:43,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-27 08:47:43,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 08:47:43,573 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 08:47:43,675 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 08:47:43,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-27 08:47:43,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-27 08:47:43,785 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2023-08-27 08:47:43,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-27 08:47:43,950 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 08:47:43,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-27 08:47:44,224 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 08:47:44,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419842735] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-27 08:47:44,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-27 08:47:44,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 15 [2023-08-27 08:47:44,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496231800] [2023-08-27 08:47:44,225 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-27 08:47:44,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-27 08:47:44,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:44,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-27 08:47:44,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=182, Unknown=0, NotChecked=0, Total=240 [2023-08-27 08:47:44,227 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 245 [2023-08-27 08:47:44,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 243 transitions, 2039 flow. Second operand has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:44,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:44,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 245 [2023-08-27 08:47:44,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:47:53,021 INFO L124 PetriNetUnfolderBase]: 53477/72794 cut-off events. [2023-08-27 08:47:53,023 INFO L125 PetriNetUnfolderBase]: For 278310/278310 co-relation queries the response was YES. [2023-08-27 08:47:53,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 284643 conditions, 72794 events. 53477/72794 cut-off events. For 278310/278310 co-relation queries the response was YES. Maximal size of possible extension queue 2428. Compared 445864 event pairs, 1096 based on Foata normal form. 2902/75696 useless extension candidates. Maximal degree in co-relation 284618. Up to 13803 conditions per place. [2023-08-27 08:47:53,709 INFO L140 encePairwiseOnDemand]: 230/245 looper letters, 856 selfloop transitions, 629 changer transitions 3/1488 dead transitions. [2023-08-27 08:47:53,709 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 1488 transitions, 14114 flow [2023-08-27 08:47:53,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-08-27 08:47:53,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-08-27 08:47:53,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 3952 transitions. [2023-08-27 08:47:53,720 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44807256235827664 [2023-08-27 08:47:53,720 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 3952 transitions. [2023-08-27 08:47:53,720 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 3952 transitions. [2023-08-27 08:47:53,722 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:47:53,722 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 3952 transitions. [2023-08-27 08:47:53,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 109.77777777777777) internal successors, (3952), 36 states have internal predecessors, (3952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:53,742 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 245.0) internal successors, (9065), 37 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:53,744 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 245.0) internal successors, (9065), 37 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:53,744 INFO L175 Difference]: Start difference. First operand has 88 places, 243 transitions, 2039 flow. Second operand 36 states and 3952 transitions. [2023-08-27 08:47:53,745 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 1488 transitions, 14114 flow [2023-08-27 08:47:57,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 1488 transitions, 13317 flow, removed 117 selfloop flow, removed 3 redundant places. [2023-08-27 08:47:57,497 INFO L231 Difference]: Finished difference. Result has 149 places, 793 transitions, 9220 flow [2023-08-27 08:47:57,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=1886, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=243, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=9220, PETRI_PLACES=149, PETRI_TRANSITIONS=793} [2023-08-27 08:47:57,498 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 99 predicate places. [2023-08-27 08:47:57,499 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 793 transitions, 9220 flow [2023-08-27 08:47:57,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 95.625) internal successors, (1530), 16 states have internal predecessors, (1530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:57,499 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:47:57,500 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:47:57,506 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 08:47:57,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2023-08-27 08:47:57,705 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:47:57,705 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:47:57,705 INFO L85 PathProgramCache]: Analyzing trace with hash -1209469846, now seen corresponding path program 1 times [2023-08-27 08:47:57,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:47:57,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704847085] [2023-08-27 08:47:57,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:47:57,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:47:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:47:58,015 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 08:47:58,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:47:58,018 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704847085] [2023-08-27 08:47:58,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704847085] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:47:58,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:47:58,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:47:58,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395872517] [2023-08-27 08:47:58,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:47:58,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:47:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:47:58,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:47:58,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:47:58,021 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 08:47:58,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 793 transitions, 9220 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:47:58,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:47:58,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 08:47:58,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:48:11,638 INFO L124 PetriNetUnfolderBase]: 56962/79088 cut-off events. [2023-08-27 08:48:11,638 INFO L125 PetriNetUnfolderBase]: For 1356191/1365998 co-relation queries the response was YES. [2023-08-27 08:48:12,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483253 conditions, 79088 events. 56962/79088 cut-off events. For 1356191/1365998 co-relation queries the response was YES. Maximal size of possible extension queue 3497. Compared 539706 event pairs, 8624 based on Foata normal form. 9002/87266 useless extension candidates. Maximal degree in co-relation 483201. Up to 37994 conditions per place. [2023-08-27 08:48:12,882 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1238 selfloop transitions, 256 changer transitions 73/1689 dead transitions. [2023-08-27 08:48:12,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 1689 transitions, 23011 flow [2023-08-27 08:48:12,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:48:12,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:48:12,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 717 transitions. [2023-08-27 08:48:12,884 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48775510204081635 [2023-08-27 08:48:12,884 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 717 transitions. [2023-08-27 08:48:12,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 717 transitions. [2023-08-27 08:48:12,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:48:12,885 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 717 transitions. [2023-08-27 08:48:12,886 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 119.5) internal successors, (717), 6 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:48:12,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:48:12,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:48:12,889 INFO L175 Difference]: Start difference. First operand has 149 places, 793 transitions, 9220 flow. Second operand 6 states and 717 transitions. [2023-08-27 08:48:12,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 1689 transitions, 23011 flow [2023-08-27 08:48:43,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 1689 transitions, 22480 flow, removed 228 selfloop flow, removed 2 redundant places. [2023-08-27 08:48:43,557 INFO L231 Difference]: Finished difference. Result has 156 places, 919 transitions, 11228 flow [2023-08-27 08:48:43,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=8935, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=793, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=610, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=11228, PETRI_PLACES=156, PETRI_TRANSITIONS=919} [2023-08-27 08:48:43,558 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 106 predicate places. [2023-08-27 08:48:43,558 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 919 transitions, 11228 flow [2023-08-27 08:48:43,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:48:43,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:48:43,559 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:48:43,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 08:48:43,559 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:48:43,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:48:43,559 INFO L85 PathProgramCache]: Analyzing trace with hash -805761356, now seen corresponding path program 1 times [2023-08-27 08:48:43,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:48:43,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11073038] [2023-08-27 08:48:43,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:48:43,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:48:43,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:48:43,793 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 08:48:43,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:48:43,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11073038] [2023-08-27 08:48:43,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11073038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:48:43,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:48:43,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-27 08:48:43,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914648909] [2023-08-27 08:48:43,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:48:43,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-27 08:48:43,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:48:43,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-27 08:48:43,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-27 08:48:43,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 08:48:43,796 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 919 transitions, 11228 flow. Second operand has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:48:43,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:48:43,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 08:48:43,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:49:04,197 INFO L124 PetriNetUnfolderBase]: 80103/111208 cut-off events. [2023-08-27 08:49:04,197 INFO L125 PetriNetUnfolderBase]: For 2608179/2608179 co-relation queries the response was YES. [2023-08-27 08:49:05,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 767317 conditions, 111208 events. 80103/111208 cut-off events. For 2608179/2608179 co-relation queries the response was YES. Maximal size of possible extension queue 4111. Compared 753661 event pairs, 17280 based on Foata normal form. 836/112044 useless extension candidates. Maximal degree in co-relation 767260. Up to 90250 conditions per place. [2023-08-27 08:49:05,882 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1154 selfloop transitions, 102 changer transitions 2/1258 dead transitions. [2023-08-27 08:49:05,882 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 1258 transitions, 17953 flow [2023-08-27 08:49:05,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-27 08:49:05,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-27 08:49:05,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 708 transitions. [2023-08-27 08:49:05,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4816326530612245 [2023-08-27 08:49:05,885 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 708 transitions. [2023-08-27 08:49:05,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 708 transitions. [2023-08-27 08:49:05,886 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:49:05,886 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 708 transitions. [2023-08-27 08:49:05,887 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 118.0) internal successors, (708), 6 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:49:05,889 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:49:05,889 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 245.0) internal successors, (1715), 7 states have internal predecessors, (1715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:49:05,889 INFO L175 Difference]: Start difference. First operand has 156 places, 919 transitions, 11228 flow. Second operand 6 states and 708 transitions. [2023-08-27 08:49:05,889 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 1258 transitions, 17953 flow [2023-08-27 08:51:03,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 1258 transitions, 17754 flow, removed 88 selfloop flow, removed 1 redundant places. [2023-08-27 08:51:03,711 INFO L231 Difference]: Finished difference. Result has 164 places, 1002 transitions, 12685 flow [2023-08-27 08:51:03,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=11176, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=919, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=821, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=12685, PETRI_PLACES=164, PETRI_TRANSITIONS=1002} [2023-08-27 08:51:03,712 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 114 predicate places. [2023-08-27 08:51:03,712 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 1002 transitions, 12685 flow [2023-08-27 08:51:03,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 101.85714285714286) internal successors, (713), 7 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:51:03,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:51:03,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:51:03,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 08:51:03,713 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:51:03,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:51:03,713 INFO L85 PathProgramCache]: Analyzing trace with hash 445085424, now seen corresponding path program 2 times [2023-08-27 08:51:03,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:51:03,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061343621] [2023-08-27 08:51:03,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:51:03,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:51:03,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:51:03,874 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 08:51:03,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:51:03,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061343621] [2023-08-27 08:51:03,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061343621] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:51:03,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:51:03,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:51:03,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257370255] [2023-08-27 08:51:03,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:51:03,876 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:51:03,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:51:03,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:51:03,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:51:03,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 08:51:03,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 1002 transitions, 12685 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:51:03,877 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:51:03,877 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 08:51:03,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:51:24,636 INFO L124 PetriNetUnfolderBase]: 72807/103821 cut-off events. [2023-08-27 08:51:24,637 INFO L125 PetriNetUnfolderBase]: For 2544259/2557368 co-relation queries the response was YES. [2023-08-27 08:51:25,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 737604 conditions, 103821 events. 72807/103821 cut-off events. For 2544259/2557368 co-relation queries the response was YES. Maximal size of possible extension queue 4901. Compared 774490 event pairs, 13449 based on Foata normal form. 11350/114076 useless extension candidates. Maximal degree in co-relation 737543. Up to 44126 conditions per place. [2023-08-27 08:51:26,605 INFO L140 encePairwiseOnDemand]: 238/245 looper letters, 940 selfloop transitions, 331 changer transitions 17/1416 dead transitions. [2023-08-27 08:51:26,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 1416 transitions, 20397 flow [2023-08-27 08:51:26,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:51:26,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:51:26,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 600 transitions. [2023-08-27 08:51:26,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897959183673469 [2023-08-27 08:51:26,608 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 600 transitions. [2023-08-27 08:51:26,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 600 transitions. [2023-08-27 08:51:26,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:51:26,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 600 transitions. [2023-08-27 08:51:26,610 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.0) internal successors, (600), 5 states have internal predecessors, (600), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:51:26,611 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:51:26,612 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:51:26,612 INFO L175 Difference]: Start difference. First operand has 164 places, 1002 transitions, 12685 flow. Second operand 5 states and 600 transitions. [2023-08-27 08:51:26,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 1416 transitions, 20397 flow [2023-08-27 08:52:41,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 1416 transitions, 20312 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-27 08:52:41,279 INFO L231 Difference]: Finished difference. Result has 170 places, 1039 transitions, 14273 flow [2023-08-27 08:52:41,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=12646, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1002, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=294, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=671, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14273, PETRI_PLACES=170, PETRI_TRANSITIONS=1039} [2023-08-27 08:52:41,280 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 120 predicate places. [2023-08-27 08:52:41,280 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 1039 transitions, 14273 flow [2023-08-27 08:52:41,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:52:41,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:52:41,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:52:41,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 08:52:41,281 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:52:41,281 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:52:41,281 INFO L85 PathProgramCache]: Analyzing trace with hash -336846700, now seen corresponding path program 3 times [2023-08-27 08:52:41,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:52:41,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154655342] [2023-08-27 08:52:41,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:52:41,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:52:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:52:41,435 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 08:52:41,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:52:41,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154655342] [2023-08-27 08:52:41,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154655342] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:52:41,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:52:41,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:52:41,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862921334] [2023-08-27 08:52:41,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:52:41,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 08:52:41,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:52:41,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 08:52:41,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 08:52:41,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 245 [2023-08-27 08:52:41,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 1039 transitions, 14273 flow. Second operand has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:52:41,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:52:41,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 245 [2023-08-27 08:52:41,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:53:02,809 INFO L124 PetriNetUnfolderBase]: 71047/102304 cut-off events. [2023-08-27 08:53:02,809 INFO L125 PetriNetUnfolderBase]: For 2836932/2850402 co-relation queries the response was YES. [2023-08-27 08:53:04,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 770418 conditions, 102304 events. 71047/102304 cut-off events. For 2836932/2850402 co-relation queries the response was YES. Maximal size of possible extension queue 4901. Compared 777960 event pairs, 13918 based on Foata normal form. 12263/113644 useless extension candidates. Maximal degree in co-relation 770354. Up to 45720 conditions per place. [2023-08-27 08:53:04,765 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 941 selfloop transitions, 322 changer transitions 65/1446 dead transitions. [2023-08-27 08:53:04,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 1446 transitions, 21988 flow [2023-08-27 08:53:04,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 08:53:04,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 08:53:04,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 602 transitions. [2023-08-27 08:53:04,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49142857142857144 [2023-08-27 08:53:04,767 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 602 transitions. [2023-08-27 08:53:04,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 602 transitions. [2023-08-27 08:53:04,768 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:53:04,768 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 602 transitions. [2023-08-27 08:53:04,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 120.4) internal successors, (602), 5 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:53:04,770 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:53:04,770 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 245.0) internal successors, (1470), 6 states have internal predecessors, (1470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:53:04,771 INFO L175 Difference]: Start difference. First operand has 170 places, 1039 transitions, 14273 flow. Second operand 5 states and 602 transitions. [2023-08-27 08:53:04,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 1446 transitions, 21988 flow [2023-08-27 08:54:27,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 1446 transitions, 21641 flow, removed 31 selfloop flow, removed 1 redundant places. [2023-08-27 08:54:27,466 INFO L231 Difference]: Finished difference. Result has 176 places, 1000 transitions, 14454 flow [2023-08-27 08:54:27,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=13478, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1008, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=14454, PETRI_PLACES=176, PETRI_TRANSITIONS=1000} [2023-08-27 08:54:27,467 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 126 predicate places. [2023-08-27 08:54:27,467 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 1000 transitions, 14454 flow [2023-08-27 08:54:27,467 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.0) internal successors, (545), 5 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:54:27,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:54:27,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:54:27,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 08:54:27,467 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:54:27,468 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:54:27,468 INFO L85 PathProgramCache]: Analyzing trace with hash -51297320, now seen corresponding path program 4 times [2023-08-27 08:54:27,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:54:27,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491281121] [2023-08-27 08:54:27,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:54:27,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:54:27,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:54:27,700 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 08:54:27,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:54:27,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491281121] [2023-08-27 08:54:27,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491281121] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:54:27,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:54:27,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:54:27,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487466354] [2023-08-27 08:54:27,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:54:27,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:54:27,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:54:27,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:54:27,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:54:27,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 245 [2023-08-27 08:54:27,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 1000 transitions, 14454 flow. Second operand has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:54:27,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:54:27,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 245 [2023-08-27 08:54:27,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:54:56,386 INFO L124 PetriNetUnfolderBase]: 89448/128415 cut-off events. [2023-08-27 08:54:56,386 INFO L125 PetriNetUnfolderBase]: For 3501473/3501473 co-relation queries the response was YES. [2023-08-27 08:54:58,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991184 conditions, 128415 events. 89448/128415 cut-off events. For 3501473/3501473 co-relation queries the response was YES. Maximal size of possible extension queue 5127. Compared 958171 event pairs, 19541 based on Foata normal form. 1292/129707 useless extension candidates. Maximal degree in co-relation 991117. Up to 96078 conditions per place. [2023-08-27 08:54:58,842 INFO L140 encePairwiseOnDemand]: 237/245 looper letters, 1289 selfloop transitions, 118 changer transitions 0/1407 dead transitions. [2023-08-27 08:54:58,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 1407 transitions, 24273 flow [2023-08-27 08:54:58,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-27 08:54:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-27 08:54:58,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 942 transitions. [2023-08-27 08:54:58,845 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4806122448979592 [2023-08-27 08:54:58,845 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 942 transitions. [2023-08-27 08:54:58,845 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 942 transitions. [2023-08-27 08:54:58,845 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:54:58,845 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 942 transitions. [2023-08-27 08:54:58,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 117.75) internal successors, (942), 8 states have internal predecessors, (942), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:54:58,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:54:58,850 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 245.0) internal successors, (2205), 9 states have internal predecessors, (2205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:54:58,850 INFO L175 Difference]: Start difference. First operand has 176 places, 1000 transitions, 14454 flow. Second operand 8 states and 942 transitions. [2023-08-27 08:54:58,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 1407 transitions, 24273 flow [2023-08-27 08:57:23,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 1407 transitions, 23740 flow, removed 61 selfloop flow, removed 1 redundant places. [2023-08-27 08:57:23,181 INFO L231 Difference]: Finished difference. Result has 186 places, 1053 transitions, 15447 flow [2023-08-27 08:57:23,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=245, PETRI_DIFFERENCE_MINUEND_FLOW=14137, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1000, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=901, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=15447, PETRI_PLACES=186, PETRI_TRANSITIONS=1053} [2023-08-27 08:57:23,182 INFO L281 CegarLoopForPetriNet]: 50 programPoint places, 136 predicate places. [2023-08-27 08:57:23,182 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 1053 transitions, 15447 flow [2023-08-27 08:57:23,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:23,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 08:57:23,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 08:57:23,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 08:57:23,183 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (and 18 more)] === [2023-08-27 08:57:23,183 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 08:57:23,183 INFO L85 PathProgramCache]: Analyzing trace with hash -2005107526, now seen corresponding path program 2 times [2023-08-27 08:57:23,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 08:57:23,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284392086] [2023-08-27 08:57:23,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 08:57:23,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 08:57:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 08:57:23,399 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 08:57:23,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 08:57:23,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284392086] [2023-08-27 08:57:23,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284392086] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 08:57:23,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 08:57:23,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-08-27 08:57:23,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952284734] [2023-08-27 08:57:23,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 08:57:23,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-27 08:57:23,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 08:57:23,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-27 08:57:23,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-27 08:57:23,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 245 [2023-08-27 08:57:23,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 1053 transitions, 15447 flow. Second operand has 6 states, 6 states have (on average 97.5) internal successors, (585), 6 states have internal predecessors, (585), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:57:23,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 08:57:23,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 245 [2023-08-27 08:57:23,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 08:58:09,717 INFO L124 PetriNetUnfolderBase]: 134121/197695 cut-off events. [2023-08-27 08:58:09,717 INFO L125 PetriNetUnfolderBase]: For 6364855/6364855 co-relation queries the response was YES. [2023-08-27 08:58:12,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1585632 conditions, 197695 events. 134121/197695 cut-off events. For 6364855/6364855 co-relation queries the response was YES. Maximal size of possible extension queue 8219. Compared 1643948 event pairs, 28216 based on Foata normal form. 2022/199717 useless extension candidates. Maximal degree in co-relation 1585561. Up to 127401 conditions per place. [2023-08-27 08:58:13,592 INFO L140 encePairwiseOnDemand]: 234/245 looper letters, 2028 selfloop transitions, 123 changer transitions 384/2535 dead transitions. [2023-08-27 08:58:13,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 2535 transitions, 44250 flow [2023-08-27 08:58:13,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-27 08:58:13,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-27 08:58:13,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1021 transitions. [2023-08-27 08:58:13,595 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46303854875283446 [2023-08-27 08:58:13,595 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1021 transitions. [2023-08-27 08:58:13,595 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1021 transitions. [2023-08-27 08:58:13,595 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 08:58:13,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1021 transitions. [2023-08-27 08:58:13,597 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 113.44444444444444) internal successors, (1021), 9 states have internal predecessors, (1021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:58:13,600 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:58:13,600 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 245.0) internal successors, (2450), 10 states have internal predecessors, (2450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 08:58:13,601 INFO L175 Difference]: Start difference. First operand has 186 places, 1053 transitions, 15447 flow. Second operand 9 states and 1021 transitions. [2023-08-27 08:58:13,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 2535 transitions, 44250 flow Received shutdown request... [2023-08-27 09:01:02,872 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-27 09:01:03,268 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (20 of 21 remaining) [2023-08-27 09:01:03,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-27 09:01:03,268 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-08-27 09:01:03,269 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 21 remaining) [2023-08-27 09:01:03,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 21 remaining) [2023-08-27 09:01:03,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 21 remaining) [2023-08-27 09:01:03,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 21 remaining) [2023-08-27 09:01:03,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 21 remaining) [2023-08-27 09:01:03,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 21 remaining) [2023-08-27 09:01:03,270 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (13 of 21 remaining) [2023-08-27 09:01:03,271 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (12 of 21 remaining) [2023-08-27 09:01:03,271 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (11 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (10 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 21 remaining) [2023-08-27 09:01:03,273 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 21 remaining) [2023-08-27 09:01:03,274 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread3Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 21 remaining) [2023-08-27 09:01:03,274 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 21 remaining) [2023-08-27 09:01:03,274 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread4Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 21 remaining) [2023-08-27 09:01:03,274 INFO L445 BasicCegarLoop]: Path program histogram: [4, 3, 2, 1, 1, 1, 1, 1] [2023-08-27 09:01:03,280 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 09:01:03,280 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 09:01:03,282 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 09:01:03 BasicIcfg [2023-08-27 09:01:03,282 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 09:01:03,283 INFO L158 Benchmark]: Toolchain (without parser) took 816034.19ms. Allocated memory was 360.7MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 336.5MB in the beginning and 10.7GB in the end (delta: -10.3GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-27 09:01:03,283 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory was 338.4MB in the beginning and 338.3MB in the end (delta: 93.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 09:01:03,283 INFO L158 Benchmark]: CACSL2BoogieTranslator took 283.92ms. Allocated memory is still 360.7MB. Free memory was 335.9MB in the beginning and 324.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-08-27 09:01:03,284 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.71ms. Allocated memory is still 360.7MB. Free memory was 324.3MB in the beginning and 322.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:01:03,284 INFO L158 Benchmark]: Boogie Preprocessor took 30.00ms. Allocated memory is still 360.7MB. Free memory was 322.8MB in the beginning and 321.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 09:01:03,284 INFO L158 Benchmark]: RCFGBuilder took 571.49ms. Allocated memory is still 360.7MB. Free memory was 321.3MB in the beginning and 297.0MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-27 09:01:03,285 INFO L158 Benchmark]: TraceAbstraction took 815090.28ms. Allocated memory was 360.7MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 296.7MB in the beginning and 10.7GB in the end (delta: -10.4GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-27 09:01:03,286 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 360.7MB. Free memory was 338.4MB in the beginning and 338.3MB in the end (delta: 93.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 283.92ms. Allocated memory is still 360.7MB. Free memory was 335.9MB in the beginning and 324.3MB in the end (delta: 11.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.71ms. Allocated memory is still 360.7MB. Free memory was 324.3MB in the beginning and 322.8MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.00ms. Allocated memory is still 360.7MB. Free memory was 322.8MB in the beginning and 321.3MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 571.49ms. Allocated memory is still 360.7MB. Free memory was 321.3MB in the beginning and 297.0MB in the end (delta: 24.3MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 815090.28ms. Allocated memory was 360.7MB in the beginning and 15.7GB in the end (delta: 15.3GB). Free memory was 296.7MB in the beginning and 10.7GB in the end (delta: -10.4GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.8s, 128 PlacesBefore, 50 PlacesAfterwards, 125 TransitionsBefore, 41 TransitionsAfterwards, 2520 CoEnabledTransitionPairs, 7 FixpointIterations, 50 TrivialSequentialCompositions, 33 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 103 TotalNumberOfCompositions, 4840 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4033, independent: 3971, independent conditional: 0, independent unconditional: 3971, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1228, independent: 1214, independent conditional: 0, independent unconditional: 1214, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4033, independent: 2757, independent conditional: 0, independent unconditional: 2757, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 1228, unknown conditional: 0, unknown unconditional: 1228] , Statistics on independence cache: Total cache size (in pairs): 245, Positive cache size: 237, Positive conditional cache size: 0, Positive unconditional cache size: 237, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 21]: Timeout (TraceAbstraction) Unable to prove that assertion always holds Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 50]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 69]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 88]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 132]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 131]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 130]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 129]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 107]: Timeout (TraceAbstraction) Unable to prove that integer overflow can never occur Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 173 locations, 21 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 815.0s, OverallIterations: 14, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 805.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1388 SdHoareTripleChecker+Valid, 3.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1388 mSDsluCounter, 159 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 107 mSDsCounter, 127 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5337 IncrementalHoareTripleChecker+Invalid, 5464 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 127 mSolverCounterUnsat, 52 mSDtfsCounter, 5337 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 226 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 593 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15447occurred in iteration=13, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 365 NumberOfCodeBlocks, 365 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 401 ConstructedInterpolants, 0 QuantifiedInterpolants, 2573 SizeOfPredicates, 19 NumberOfNonLiveVariables, 430 ConjunctsInSsa, 36 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 8/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown