/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:43:19,096 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:43:19,142 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 [2023-08-26 22:43:19,147 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:43:19,147 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:43:19,170 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:43:19,171 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:43:19,171 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:43:19,172 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:43:19,172 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:43:19,172 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:43:19,173 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:43:19,173 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:43:19,174 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:43:19,174 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:43:19,174 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:43:19,175 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:43:19,175 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:43:19,175 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:43:19,176 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:43:19,176 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:43:19,179 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:43:19,179 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:43:19,180 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:43:19,183 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:43:19,184 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:43:19,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:43:19,184 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:43:19,184 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:43:19,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:43:19,186 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:43:19,186 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:43:19,186 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:43:19,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:43:19,186 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:43:19,187 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:43:19,499 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:43:19,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:43:19,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:43:19,518 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:43:19,519 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:43:19,520 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-26 22:43:20,866 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:43:21,102 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:43:21,102 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_60-invariant_racefree.i [2023-08-26 22:43:21,115 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e94eeef01/38ce6bcf4b5946d7bc60b40845e50905/FLAGe273705c0 [2023-08-26 22:43:21,127 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e94eeef01/38ce6bcf4b5946d7bc60b40845e50905 [2023-08-26 22:43:21,129 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:43:21,130 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:43:21,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:43:21,132 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:43:21,134 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:43:21,135 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,135 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@727a20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21, skipping insertion in model container [2023-08-26 22:43:21,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,169 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:43:21,491 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:43:21,506 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:43:21,527 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:43:21,529 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:43:21,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:43:21,589 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:43:21,590 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21 WrapperNode [2023-08-26 22:43:21,590 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:43:21,591 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:43:21,591 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:43:21,591 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:43:21,597 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,616 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,638 INFO L138 Inliner]: procedures = 170, calls = 35, calls flagged for inlining = 5, calls inlined = 6, statements flattened = 161 [2023-08-26 22:43:21,639 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:43:21,643 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:43:21,643 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:43:21,643 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:43:21,651 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,651 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,659 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,665 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,666 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,669 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:43:21,670 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:43:21,670 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:43:21,670 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:43:21,670 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (1/1) ... [2023-08-26 22:43:21,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:43:21,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:43:21,698 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) [2023-08-26 22:43:21,729 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 [2023-08-26 22:43:21,742 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:43:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:43:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:43:21,743 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:43:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:43:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:43:21,744 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:43:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:43:21,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:43:21,745 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:43:21,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:43:21,746 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-26 22:43:21,911 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:43:21,913 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:43:22,215 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:43:22,229 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:43:22,229 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-26 22:43:22,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:43:22 BoogieIcfgContainer [2023-08-26 22:43:22,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:43:22,236 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:43:22,236 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:43:22,240 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:43:22,241 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:43:21" (1/3) ... [2023-08-26 22:43:22,241 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4342042e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:43:22, skipping insertion in model container [2023-08-26 22:43:22,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:43:21" (2/3) ... [2023-08-26 22:43:22,242 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4342042e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:43:22, skipping insertion in model container [2023-08-26 22:43:22,242 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:43:22" (3/3) ... [2023-08-26 22:43:22,243 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_60-invariant_racefree.i [2023-08-26 22:43:22,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:43:22,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 14 error locations. [2023-08-26 22:43:22,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:43:22,316 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:43:22,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 172 transitions, 352 flow [2023-08-26 22:43:22,435 INFO L124 PetriNetUnfolderBase]: 36/241 cut-off events. [2023-08-26 22:43:22,435 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:43:22,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 241 events. 36/241 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 865 event pairs, 0 based on Foata normal form. 0/183 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-26 22:43:22,443 INFO L82 GeneralOperation]: Start removeDead. Operand has 151 places, 172 transitions, 352 flow [2023-08-26 22:43:22,453 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 169 transitions, 346 flow [2023-08-26 22:43:22,457 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:43:22,469 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 169 transitions, 346 flow [2023-08-26 22:43:22,471 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 169 transitions, 346 flow [2023-08-26 22:43:22,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 169 transitions, 346 flow [2023-08-26 22:43:22,528 INFO L124 PetriNetUnfolderBase]: 35/238 cut-off events. [2023-08-26 22:43:22,528 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:43:22,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 238 events. 35/238 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 866 event pairs, 0 based on Foata normal form. 0/181 useless extension candidates. Maximal degree in co-relation 135. Up to 6 conditions per place. [2023-08-26 22:43:22,539 INFO L119 LiptonReduction]: Number of co-enabled transitions 9006 [2023-08-26 22:43:25,340 INFO L134 LiptonReduction]: Checked pairs total: 22887 [2023-08-26 22:43:25,340 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-26 22:43:25,352 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:43:25,357 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;@6e99a3e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:43:25,358 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2023-08-26 22:43:25,361 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:43:25,361 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-26 22:43:25,361 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:43:25,361 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:25,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:43:25,362 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:43:25,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:25,366 INFO L85 PathProgramCache]: Analyzing trace with hash 20550692, now seen corresponding path program 1 times [2023-08-26 22:43:25,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:25,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931030794] [2023-08-26 22:43:25,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:25,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:43:25,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:43:25,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:43:25,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931030794] [2023-08-26 22:43:25,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931030794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:43:25,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:43:25,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:43:25,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122598176] [2023-08-26 22:43:25,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:43:25,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:43:25,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:43:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:43:25,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:43:25,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 312 [2023-08-26 22:43:25,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 75 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:25,674 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:43:25,674 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 312 [2023-08-26 22:43:25,674 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:43:25,854 INFO L124 PetriNetUnfolderBase]: 400/933 cut-off events. [2023-08-26 22:43:25,854 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:43:25,855 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1775 conditions, 933 events. 400/933 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 5163 event pairs, 198 based on Foata normal form. 164/803 useless extension candidates. Maximal degree in co-relation 1735. Up to 802 conditions per place. [2023-08-26 22:43:25,859 INFO L140 encePairwiseOnDemand]: 288/312 looper letters, 65 selfloop transitions, 2 changer transitions 0/76 dead transitions. [2023-08-26 22:43:25,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 76 transitions, 294 flow [2023-08-26 22:43:25,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:43:25,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:43:25,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 512 transitions. [2023-08-26 22:43:25,872 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5470085470085471 [2023-08-26 22:43:25,872 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 512 transitions. [2023-08-26 22:43:25,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 512 transitions. [2023-08-26 22:43:25,874 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:43:25,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 512 transitions. [2023-08-26 22:43:25,880 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.66666666666666) internal successors, (512), 3 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:25,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:25,884 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 312.0) internal successors, (1248), 4 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:25,886 INFO L175 Difference]: Start difference. First operand has 59 places, 75 transitions, 158 flow. Second operand 3 states and 512 transitions. [2023-08-26 22:43:25,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 76 transitions, 294 flow [2023-08-26 22:43:25,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 76 transitions, 294 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:43:25,891 INFO L231 Difference]: Finished difference. Result has 59 places, 54 transitions, 124 flow [2023-08-26 22:43:25,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=312, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=124, PETRI_PLACES=59, PETRI_TRANSITIONS=54} [2023-08-26 22:43:25,895 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 0 predicate places. [2023-08-26 22:43:25,895 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 54 transitions, 124 flow [2023-08-26 22:43:25,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:25,896 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:25,896 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:43:25,896 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:43:25,896 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 17 more)] === [2023-08-26 22:43:25,897 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:25,897 INFO L85 PathProgramCache]: Analyzing trace with hash -1725573603, now seen corresponding path program 1 times [2023-08-26 22:43:25,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:25,897 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865862556] [2023-08-26 22:43:25,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:25,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:43:25,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:43:25,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:43:25,948 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:43:25,949 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:43:25,950 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (19 of 20 remaining) [2023-08-26 22:43:25,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 20 remaining) [2023-08-26 22:43:25,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 20 remaining) [2023-08-26 22:43:25,951 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 20 remaining) [2023-08-26 22:43:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 20 remaining) [2023-08-26 22:43:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 20 remaining) [2023-08-26 22:43:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 20 remaining) [2023-08-26 22:43:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 20 remaining) [2023-08-26 22:43:25,952 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (11 of 20 remaining) [2023-08-26 22:43:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 20 remaining) [2023-08-26 22:43:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 20 remaining) [2023-08-26 22:43:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 20 remaining) [2023-08-26 22:43:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 20 remaining) [2023-08-26 22:43:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 20 remaining) [2023-08-26 22:43:25,953 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (5 of 20 remaining) [2023-08-26 22:43:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 20 remaining) [2023-08-26 22:43:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 20 remaining) [2023-08-26 22:43:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 20 remaining) [2023-08-26 22:43:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 20 remaining) [2023-08-26 22:43:25,954 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 20 remaining) [2023-08-26 22:43:25,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:43:25,955 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-26 22:43:25,957 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:43:25,957 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:43:25,978 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:43:25,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-26 22:43:26,030 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-26 22:43:26,031 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:43:26,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-26 22:43:26,036 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 231 transitions, 480 flow [2023-08-26 22:43:26,042 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 200 places, 231 transitions, 480 flow [2023-08-26 22:43:26,042 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:43:26,042 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-26 22:43:26,042 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 200 places, 231 transitions, 480 flow [2023-08-26 22:43:26,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 231 transitions, 480 flow [2023-08-26 22:43:26,087 INFO L124 PetriNetUnfolderBase]: 62/406 cut-off events. [2023-08-26 22:43:26,087 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:43:26,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420 conditions, 406 events. 62/406 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1624 event pairs, 0 based on Foata normal form. 0/305 useless extension candidates. Maximal degree in co-relation 243. Up to 9 conditions per place. [2023-08-26 22:43:26,107 INFO L119 LiptonReduction]: Number of co-enabled transitions 26676 [2023-08-26 22:43:29,198 INFO L134 LiptonReduction]: Checked pairs total: 75525 [2023-08-26 22:43:29,199 INFO L136 LiptonReduction]: Total number of compositions: 188 [2023-08-26 22:43:29,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:43:29,202 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;@6e99a3e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:43:29,202 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 22:43:29,204 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:43:29,204 INFO L124 PetriNetUnfolderBase]: 2/17 cut-off events. [2023-08-26 22:43:29,204 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:43:29,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:29,205 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:43:29,205 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:43:29,205 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:29,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1093205524, now seen corresponding path program 1 times [2023-08-26 22:43:29,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:29,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933946465] [2023-08-26 22:43:29,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:29,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:29,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:43:29,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:43:29,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:43:29,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933946465] [2023-08-26 22:43:29,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933946465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:43:29,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:43:29,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:43:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388733612] [2023-08-26 22:43:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:43:29,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:43:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:43:29,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:43:29,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:43:29,248 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 419 [2023-08-26 22:43:29,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 117 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:29,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:43:29,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 419 [2023-08-26 22:43:29,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:43:31,391 INFO L124 PetriNetUnfolderBase]: 17378/28121 cut-off events. [2023-08-26 22:43:31,392 INFO L125 PetriNetUnfolderBase]: For 75/75 co-relation queries the response was YES. [2023-08-26 22:43:31,424 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54792 conditions, 28121 events. 17378/28121 cut-off events. For 75/75 co-relation queries the response was YES. Maximal size of possible extension queue 854. Compared 214276 event pairs, 7900 based on Foata normal form. 2895/21983 useless extension candidates. Maximal degree in co-relation 4665. Up to 25454 conditions per place. [2023-08-26 22:43:31,550 INFO L140 encePairwiseOnDemand]: 385/419 looper letters, 106 selfloop transitions, 3 changer transitions 0/124 dead transitions. [2023-08-26 22:43:31,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 124 transitions, 484 flow [2023-08-26 22:43:31,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:43:31,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:43:31,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 711 transitions. [2023-08-26 22:43:31,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5656324582338902 [2023-08-26 22:43:31,554 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 711 transitions. [2023-08-26 22:43:31,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 711 transitions. [2023-08-26 22:43:31,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:43:31,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 711 transitions. [2023-08-26 22:43:31,556 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 237.0) internal successors, (711), 3 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:31,560 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:31,561 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:31,561 INFO L175 Difference]: Start difference. First operand has 89 places, 117 transitions, 252 flow. Second operand 3 states and 711 transitions. [2023-08-26 22:43:31,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 124 transitions, 484 flow [2023-08-26 22:43:31,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 124 transitions, 484 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:43:31,566 INFO L231 Difference]: Finished difference. Result has 89 places, 86 transitions, 210 flow [2023-08-26 22:43:31,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=210, PETRI_PLACES=89, PETRI_TRANSITIONS=86} [2023-08-26 22:43:31,567 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, 0 predicate places. [2023-08-26 22:43:31,567 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 86 transitions, 210 flow [2023-08-26 22:43:31,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:31,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:31,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:43:31,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:43:31,568 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:43:31,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:31,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1093856905, now seen corresponding path program 1 times [2023-08-26 22:43:31,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:31,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1566038175] [2023-08-26 22:43:31,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:31,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:31,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:43:31,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:43:31,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:43:31,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1566038175] [2023-08-26 22:43:31,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1566038175] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:43:31,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:43:31,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:43:31,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679615401] [2023-08-26 22:43:31,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:43:31,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:43:31,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:43:31,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:43:31,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:43:31,652 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 419 [2023-08-26 22:43:31,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 210 flow. Second operand has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:31,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:43:31,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 419 [2023-08-26 22:43:31,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:43:33,328 INFO L124 PetriNetUnfolderBase]: 16676/26772 cut-off events. [2023-08-26 22:43:33,329 INFO L125 PetriNetUnfolderBase]: For 1890/1890 co-relation queries the response was YES. [2023-08-26 22:43:33,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53437 conditions, 26772 events. 16676/26772 cut-off events. For 1890/1890 co-relation queries the response was YES. Maximal size of possible extension queue 894. Compared 207671 event pairs, 2298 based on Foata normal form. 360/19090 useless extension candidates. Maximal degree in co-relation 53307. Up to 21602 conditions per place. [2023-08-26 22:43:33,490 INFO L140 encePairwiseOnDemand]: 416/419 looper letters, 104 selfloop transitions, 2 changer transitions 0/121 dead transitions. [2023-08-26 22:43:33,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 121 transitions, 486 flow [2023-08-26 22:43:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:43:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:43:33,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 658 transitions. [2023-08-26 22:43:33,493 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234685759745425 [2023-08-26 22:43:33,493 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 658 transitions. [2023-08-26 22:43:33,493 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 658 transitions. [2023-08-26 22:43:33,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:43:33,494 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 658 transitions. [2023-08-26 22:43:33,495 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 219.33333333333334) internal successors, (658), 3 states have internal predecessors, (658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:33,498 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:33,498 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:33,498 INFO L175 Difference]: Start difference. First operand has 89 places, 86 transitions, 210 flow. Second operand 3 states and 658 transitions. [2023-08-26 22:43:33,499 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 121 transitions, 486 flow [2023-08-26 22:43:33,502 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 121 transitions, 482 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:43:33,504 INFO L231 Difference]: Finished difference. Result has 88 places, 84 transitions, 200 flow [2023-08-26 22:43:33,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=196, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=200, PETRI_PLACES=88, PETRI_TRANSITIONS=84} [2023-08-26 22:43:33,507 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2023-08-26 22:43:33,507 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 84 transitions, 200 flow [2023-08-26 22:43:33,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 185.33333333333334) internal successors, (556), 3 states have internal predecessors, (556), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:33,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:33,508 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:43:33,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:43:33,508 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:43:33,509 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:33,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1062614709, now seen corresponding path program 1 times [2023-08-26 22:43:33,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:33,509 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215181237] [2023-08-26 22:43:33,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:33,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:33,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:43:33,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:43:33,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:43:33,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215181237] [2023-08-26 22:43:33,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215181237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:43:33,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:43:33,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:43:33,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139429794] [2023-08-26 22:43:33,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:43:33,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:43:33,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:43:33,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:43:33,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:43:33,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 419 [2023-08-26 22:43:33,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 84 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:33,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:43:33,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 419 [2023-08-26 22:43:33,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:43:35,337 INFO L124 PetriNetUnfolderBase]: 14884/25675 cut-off events. [2023-08-26 22:43:35,337 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2023-08-26 22:43:35,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50420 conditions, 25675 events. 14884/25675 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 828. Compared 205942 event pairs, 7766 based on Foata normal form. 0/19634 useless extension candidates. Maximal degree in co-relation 33296. Up to 15800 conditions per place. [2023-08-26 22:43:35,492 INFO L140 encePairwiseOnDemand]: 390/419 looper letters, 100 selfloop transitions, 11 changer transitions 0/124 dead transitions. [2023-08-26 22:43:35,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 124 transitions, 508 flow [2023-08-26 22:43:35,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:43:35,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:43:35,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 644 transitions. [2023-08-26 22:43:35,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123309466984884 [2023-08-26 22:43:35,495 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 644 transitions. [2023-08-26 22:43:35,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 644 transitions. [2023-08-26 22:43:35,496 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:43:35,496 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 644 transitions. [2023-08-26 22:43:35,497 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 214.66666666666666) internal successors, (644), 3 states have internal predecessors, (644), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:35,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:35,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:35,501 INFO L175 Difference]: Start difference. First operand has 88 places, 84 transitions, 200 flow. Second operand 3 states and 644 transitions. [2023-08-26 22:43:35,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 124 transitions, 508 flow [2023-08-26 22:43:35,505 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 124 transitions, 504 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:43:35,507 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 304 flow [2023-08-26 22:43:35,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=304, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-08-26 22:43:35,509 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2023-08-26 22:43:35,509 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 304 flow [2023-08-26 22:43:35,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:35,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:35,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:43:35,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:43:35,510 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:43:35,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:35,511 INFO L85 PathProgramCache]: Analyzing trace with hash 2128050380, now seen corresponding path program 1 times [2023-08-26 22:43:35,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:35,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350502527] [2023-08-26 22:43:35,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:35,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:35,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:43:35,566 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:43:35,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:43:35,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350502527] [2023-08-26 22:43:35,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350502527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:43:35,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:43:35,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:43:35,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543272657] [2023-08-26 22:43:35,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:43:35,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:43:35,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:43:35,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:43:35,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:43:35,569 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 184 out of 419 [2023-08-26 22:43:35,570 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 91 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:35,570 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:43:35,570 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 184 of 419 [2023-08-26 22:43:35,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:43:37,098 INFO L124 PetriNetUnfolderBase]: 14384/25121 cut-off events. [2023-08-26 22:43:37,098 INFO L125 PetriNetUnfolderBase]: For 5474/5986 co-relation queries the response was YES. [2023-08-26 22:43:37,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59464 conditions, 25121 events. 14384/25121 cut-off events. For 5474/5986 co-relation queries the response was YES. Maximal size of possible extension queue 824. Compared 203989 event pairs, 8957 based on Foata normal form. 0/21902 useless extension candidates. Maximal degree in co-relation 41908. Up to 23221 conditions per place. [2023-08-26 22:43:37,222 INFO L140 encePairwiseOnDemand]: 415/419 looper letters, 81 selfloop transitions, 4 changer transitions 0/101 dead transitions. [2023-08-26 22:43:37,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 101 transitions, 496 flow [2023-08-26 22:43:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:43:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:43:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-08-26 22:43:37,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5003977724741447 [2023-08-26 22:43:37,225 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-08-26 22:43:37,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-08-26 22:43:37,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:43:37,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-08-26 22:43:37,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:37,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:37,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 419.0) internal successors, (1676), 4 states have internal predecessors, (1676), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:37,230 INFO L175 Difference]: Start difference. First operand has 88 places, 91 transitions, 304 flow. Second operand 3 states and 629 transitions. [2023-08-26 22:43:37,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 101 transitions, 496 flow [2023-08-26 22:43:37,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 101 transitions, 474 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:43:37,339 INFO L231 Difference]: Finished difference. Result has 88 places, 91 transitions, 294 flow [2023-08-26 22:43:37,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=419, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=294, PETRI_PLACES=88, PETRI_TRANSITIONS=91} [2023-08-26 22:43:37,342 INFO L281 CegarLoopForPetriNet]: 89 programPoint places, -1 predicate places. [2023-08-26 22:43:37,342 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 91 transitions, 294 flow [2023-08-26 22:43:37,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.33333333333334) internal successors, (559), 3 states have internal predecessors, (559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:37,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:37,343 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:43:37,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:43:37,344 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 22 more)] === [2023-08-26 22:43:37,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:37,345 INFO L85 PathProgramCache]: Analyzing trace with hash 652018239, now seen corresponding path program 1 times [2023-08-26 22:43:37,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:37,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652661619] [2023-08-26 22:43:37,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:37,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:43:37,365 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:43:37,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:43:37,381 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:43:37,381 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:43:37,381 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-26 22:43:37,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (16 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-26 22:43:37,383 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (10 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (5 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-26 22:43:37,384 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-26 22:43:37,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-26 22:43:37,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-26 22:43:37,385 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 25 remaining) [2023-08-26 22:43:37,385 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-26 22:43:37,385 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-26 22:43:37,386 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:43:37,386 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:43:37,423 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:43:37,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-26 22:43:37,504 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-26 22:43:37,505 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:43:37,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-26 22:43:37,517 INFO L82 GeneralOperation]: Start removeDead. Operand has 249 places, 290 transitions, 610 flow [2023-08-26 22:43:37,523 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 249 places, 290 transitions, 610 flow [2023-08-26 22:43:37,523 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:43:37,524 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-26 22:43:37,524 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 249 places, 290 transitions, 610 flow [2023-08-26 22:43:37,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 249 places, 290 transitions, 610 flow [2023-08-26 22:43:37,584 INFO L124 PetriNetUnfolderBase]: 93/612 cut-off events. [2023-08-26 22:43:37,584 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:43:37,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 612 events. 93/612 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2617 event pairs, 1 based on Foata normal form. 0/460 useless extension candidates. Maximal degree in co-relation 414. Up to 16 conditions per place. [2023-08-26 22:43:37,617 INFO L119 LiptonReduction]: Number of co-enabled transitions 50274 [2023-08-26 22:43:40,909 INFO L134 LiptonReduction]: Checked pairs total: 161209 [2023-08-26 22:43:40,909 INFO L136 LiptonReduction]: Total number of compositions: 232 [2023-08-26 22:43:40,911 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:43:40,911 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;@6e99a3e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:43:40,911 INFO L358 AbstractCegarLoop]: Starting to check reachability of 30 error locations. [2023-08-26 22:43:40,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:43:40,913 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-26 22:43:40,913 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:43:40,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:43:40,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:43:40,913 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:43:40,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:43:40,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1647378102, now seen corresponding path program 1 times [2023-08-26 22:43:40,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:43:40,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884246195] [2023-08-26 22:43:40,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:43:40,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:43:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:43:40,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:43:40,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:43:40,933 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884246195] [2023-08-26 22:43:40,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884246195] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:43:40,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:43:40,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:43:40,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705090920] [2023-08-26 22:43:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:43:40,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:43:40,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:43:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:43:40,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:43:40,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-26 22:43:40,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 146 transitions, 322 flow. Second operand has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:43:40,936 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:43:40,936 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-26 22:43:40,936 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:44:25,479 INFO L124 PetriNetUnfolderBase]: 619053/850214 cut-off events. [2023-08-26 22:44:25,479 INFO L125 PetriNetUnfolderBase]: For 4143/4143 co-relation queries the response was YES. [2023-08-26 22:44:26,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1687171 conditions, 850214 events. 619053/850214 cut-off events. For 4143/4143 co-relation queries the response was YES. Maximal size of possible extension queue 17219. Compared 6895721 event pairs, 387122 based on Foata normal form. 86548/658267 useless extension candidates. Maximal degree in co-relation 72155. Up to 833649 conditions per place. [2023-08-26 22:44:29,732 INFO L140 encePairwiseOnDemand]: 482/522 looper letters, 112 selfloop transitions, 2 changer transitions 0/130 dead transitions. [2023-08-26 22:44:29,732 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 130 transitions, 518 flow [2023-08-26 22:44:29,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:44:29,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:44:29,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 850 transitions. [2023-08-26 22:44:29,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427841634738186 [2023-08-26 22:44:29,735 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 850 transitions. [2023-08-26 22:44:29,735 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 850 transitions. [2023-08-26 22:44:29,736 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:44:29,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 850 transitions. [2023-08-26 22:44:29,737 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.3333333333333) internal successors, (850), 3 states have internal predecessors, (850), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:44:29,740 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:44:29,741 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:44:29,741 INFO L175 Difference]: Start difference. First operand has 112 places, 146 transitions, 322 flow. Second operand 3 states and 850 transitions. [2023-08-26 22:44:29,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 130 transitions, 518 flow [2023-08-26 22:44:29,747 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 130 transitions, 518 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:44:29,748 INFO L231 Difference]: Finished difference. Result has 114 places, 111 transitions, 266 flow [2023-08-26 22:44:29,749 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=110, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=266, PETRI_PLACES=114, PETRI_TRANSITIONS=111} [2023-08-26 22:44:29,749 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 2 predicate places. [2023-08-26 22:44:29,749 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 111 transitions, 266 flow [2023-08-26 22:44:29,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.66666666666666) internal successors, (695), 3 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:44:29,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:44:29,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:44:29,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:44:29,750 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:44:29,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:44:29,751 INFO L85 PathProgramCache]: Analyzing trace with hash -853762988, now seen corresponding path program 1 times [2023-08-26 22:44:29,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:44:29,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249182156] [2023-08-26 22:44:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:44:29,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:44:29,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:44:29,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:44:29,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:44:29,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249182156] [2023-08-26 22:44:29,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249182156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:44:29,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:44:29,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:44:29,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722048107] [2023-08-26 22:44:29,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:44:29,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:44:29,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:44:29,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:44:29,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:44:29,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 211 out of 522 [2023-08-26 22:44:29,789 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 111 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:44:29,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:44:29,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 211 of 522 [2023-08-26 22:44:29,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:45:18,566 INFO L124 PetriNetUnfolderBase]: 570795/832109 cut-off events. [2023-08-26 22:45:18,567 INFO L125 PetriNetUnfolderBase]: For 5666/5666 co-relation queries the response was YES. [2023-08-26 22:45:20,209 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1646484 conditions, 832109 events. 570795/832109 cut-off events. For 5666/5666 co-relation queries the response was YES. Maximal size of possible extension queue 18718. Compared 7672011 event pairs, 294210 based on Foata normal form. 0/644532 useless extension candidates. Maximal degree in co-relation 1646427. Up to 532021 conditions per place. [2023-08-26 22:45:23,057 INFO L140 encePairwiseOnDemand]: 484/522 looper letters, 141 selfloop transitions, 13 changer transitions 0/168 dead transitions. [2023-08-26 22:45:23,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 168 transitions, 697 flow [2023-08-26 22:45:23,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:45:23,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:45:23,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 811 transitions. [2023-08-26 22:45:23,060 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5178799489144317 [2023-08-26 22:45:23,060 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 811 transitions. [2023-08-26 22:45:23,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 811 transitions. [2023-08-26 22:45:23,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:45:23,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 811 transitions. [2023-08-26 22:45:23,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 270.3333333333333) internal successors, (811), 3 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:45:23,065 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:45:23,066 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:45:23,066 INFO L175 Difference]: Start difference. First operand has 114 places, 111 transitions, 266 flow. Second operand 3 states and 811 transitions. [2023-08-26 22:45:23,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 168 transitions, 697 flow [2023-08-26 22:45:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 168 transitions, 695 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:45:23,075 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 402 flow [2023-08-26 22:45:23,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=402, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2023-08-26 22:45:23,076 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-26 22:45:23,076 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 402 flow [2023-08-26 22:45:23,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 213.33333333333334) internal successors, (640), 3 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:45:23,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:45:23,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:45:23,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:45:23,076 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:45:23,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:45:23,077 INFO L85 PathProgramCache]: Analyzing trace with hash -1643114045, now seen corresponding path program 1 times [2023-08-26 22:45:23,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:45:23,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564623540] [2023-08-26 22:45:23,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:45:23,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:45:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:45:23,100 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-26 22:45:23,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:45:23,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564623540] [2023-08-26 22:45:23,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564623540] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:45:23,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:45:23,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:45:23,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047359038] [2023-08-26 22:45:23,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:45:23,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:45:23,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:45:23,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:45:23,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:45:23,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-26 22:45:23,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 402 flow. Second operand has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:45:23,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:45:23,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-26 22:45:23,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:46:17,190 INFO L124 PetriNetUnfolderBase]: 559717/818075 cut-off events. [2023-08-26 22:46:17,190 INFO L125 PetriNetUnfolderBase]: For 170575/171473 co-relation queries the response was YES. [2023-08-26 22:46:19,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1940013 conditions, 818075 events. 559717/818075 cut-off events. For 170575/171473 co-relation queries the response was YES. Maximal size of possible extension queue 18752. Compared 7521043 event pairs, 347625 based on Foata normal form. 0/723564 useless extension candidates. Maximal degree in co-relation 918855. Up to 785798 conditions per place. [2023-08-26 22:46:22,236 INFO L140 encePairwiseOnDemand]: 518/522 looper letters, 115 selfloop transitions, 4 changer transitions 0/136 dead transitions. [2023-08-26 22:46:22,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 136 transitions, 674 flow [2023-08-26 22:46:22,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:46:22,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:46:22,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 799 transitions. [2023-08-26 22:46:22,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102171136653896 [2023-08-26 22:46:22,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 799 transitions. [2023-08-26 22:46:22,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 799 transitions. [2023-08-26 22:46:22,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:46:22,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 799 transitions. [2023-08-26 22:46:22,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 266.3333333333333) internal successors, (799), 3 states have internal predecessors, (799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:22,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:22,243 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 522.0) internal successors, (2088), 4 states have internal predecessors, (2088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:46:22,243 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 402 flow. Second operand 3 states and 799 transitions. [2023-08-26 22:46:22,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 136 transitions, 674 flow [2023-08-26 22:47:01,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 136 transitions, 648 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:47:01,457 INFO L231 Difference]: Finished difference. Result has 115 places, 120 transitions, 388 flow [2023-08-26 22:47:01,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=388, PETRI_PLACES=115, PETRI_TRANSITIONS=120} [2023-08-26 22:47:01,458 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 3 predicate places. [2023-08-26 22:47:01,458 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 120 transitions, 388 flow [2023-08-26 22:47:01,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.33333333333334) internal successors, (697), 3 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:01,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:47:01,459 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:47:01,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:47:01,459 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:47:01,459 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:47:01,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1643114124, now seen corresponding path program 1 times [2023-08-26 22:47:01,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:47:01,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975227693] [2023-08-26 22:47:01,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:01,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:47:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:47:01,493 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:47:01,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:47:01,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975227693] [2023-08-26 22:47:01,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975227693] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:47:01,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [510908698] [2023-08-26 22:47:01,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:01,494 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:47:01,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:47:01,499 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) [2023-08-26 22:47:01,525 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-26 22:47:01,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:47:01,604 INFO L262 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:47:01,605 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:47:01,637 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:47:01,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:47:01,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [510908698] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:47:01,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:47:01,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:47:01,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461409878] [2023-08-26 22:47:01,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:47:01,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:47:01,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:47:01,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:47:01,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:47:01,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-26 22:47:01,640 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 120 transitions, 388 flow. Second operand has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:01,640 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:47:01,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-26 22:47:01,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:47:53,635 INFO L124 PetriNetUnfolderBase]: 558852/816853 cut-off events. [2023-08-26 22:47:53,635 INFO L125 PetriNetUnfolderBase]: For 87379/88277 co-relation queries the response was YES. [2023-08-26 22:47:55,470 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1883490 conditions, 816853 events. 558852/816853 cut-off events. For 87379/88277 co-relation queries the response was YES. Maximal size of possible extension queue 18752. Compared 7511436 event pairs, 346783 based on Foata normal form. 320/698256 useless extension candidates. Maximal degree in co-relation 889239. Up to 784619 conditions per place. [2023-08-26 22:47:58,383 INFO L140 encePairwiseOnDemand]: 518/522 looper letters, 120 selfloop transitions, 3 changer transitions 0/140 dead transitions. [2023-08-26 22:47:58,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 140 transitions, 676 flow [2023-08-26 22:47:58,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:47:58,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:47:58,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1034 transitions. [2023-08-26 22:47:58,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4952107279693487 [2023-08-26 22:47:58,386 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1034 transitions. [2023-08-26 22:47:58,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1034 transitions. [2023-08-26 22:47:58,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:47:58,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1034 transitions. [2023-08-26 22:47:58,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 258.5) internal successors, (1034), 4 states have internal predecessors, (1034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:58,391 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 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) [2023-08-26 22:47:58,392 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 522.0) internal successors, (2610), 5 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) [2023-08-26 22:47:58,392 INFO L175 Difference]: Start difference. First operand has 115 places, 120 transitions, 388 flow. Second operand 4 states and 1034 transitions. [2023-08-26 22:47:58,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 140 transitions, 676 flow [2023-08-26 22:47:58,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 140 transitions, 672 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:47:58,513 INFO L231 Difference]: Finished difference. Result has 116 places, 119 transitions, 386 flow [2023-08-26 22:47:58,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=386, PETRI_PLACES=116, PETRI_TRANSITIONS=119} [2023-08-26 22:47:58,513 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, 4 predicate places. [2023-08-26 22:47:58,514 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 119 transitions, 386 flow [2023-08-26 22:47:58,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 231.75) internal successors, (927), 4 states have internal predecessors, (927), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:58,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:47:58,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:47:58,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-26 22:47:58,721 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,SelfDestructingSolverStorable10 [2023-08-26 22:47:58,721 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:47:58,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:47:58,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1735758778, now seen corresponding path program 1 times [2023-08-26 22:47:58,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:47:58,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597090629] [2023-08-26 22:47:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:58,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:47:58,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:47:58,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:47:58,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:47:58,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597090629] [2023-08-26 22:47:58,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597090629] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:47:58,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1294605308] [2023-08-26 22:47:58,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:58,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:47:58,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:47:58,777 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) [2023-08-26 22:47:58,779 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-26 22:47:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:47:58,865 INFO L262 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-26 22:47:58,867 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:47:58,881 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:47:58,881 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-26 22:47:58,901 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:47:58,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1294605308] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-26 22:47:58,901 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-26 22:47:58,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-08-26 22:47:58,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872313893] [2023-08-26 22:47:58,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-26 22:47:58,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-26 22:47:58,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:47:58,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-26 22:47:58,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-08-26 22:47:58,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 522 [2023-08-26 22:47:58,905 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 119 transitions, 386 flow. Second operand has 7 states, 7 states have (on average 232.85714285714286) internal successors, (1630), 7 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:58,905 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:47:58,905 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 522 [2023-08-26 22:47:58,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:47:59,306 INFO L124 PetriNetUnfolderBase]: 2174/3564 cut-off events. [2023-08-26 22:47:59,306 INFO L125 PetriNetUnfolderBase]: For 2324/2324 co-relation queries the response was YES. [2023-08-26 22:47:59,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9084 conditions, 3564 events. 2174/3564 cut-off events. For 2324/2324 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 20036 event pairs, 61 based on Foata normal form. 343/3865 useless extension candidates. Maximal degree in co-relation 2429. Up to 2067 conditions per place. [2023-08-26 22:47:59,318 INFO L140 encePairwiseOnDemand]: 519/522 looper letters, 55 selfloop transitions, 4 changer transitions 0/63 dead transitions. [2023-08-26 22:47:59,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 307 flow [2023-08-26 22:47:59,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-26 22:47:59,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-26 22:47:59,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1442 transitions. [2023-08-26 22:47:59,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4604086845466156 [2023-08-26 22:47:59,321 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1442 transitions. [2023-08-26 22:47:59,321 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1442 transitions. [2023-08-26 22:47:59,322 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:47:59,322 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1442 transitions. [2023-08-26 22:47:59,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 240.33333333333334) internal successors, (1442), 6 states have internal predecessors, (1442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:59,329 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:59,330 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:59,330 INFO L175 Difference]: Start difference. First operand has 116 places, 119 transitions, 386 flow. Second operand 6 states and 1442 transitions. [2023-08-26 22:47:59,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 307 flow [2023-08-26 22:47:59,333 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 63 transitions, 297 flow, removed 3 selfloop flow, removed 3 redundant places. [2023-08-26 22:47:59,333 INFO L231 Difference]: Finished difference. Result has 44 places, 29 transitions, 109 flow [2023-08-26 22:47:59,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=522, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=109, PETRI_PLACES=44, PETRI_TRANSITIONS=29} [2023-08-26 22:47:59,334 INFO L281 CegarLoopForPetriNet]: 112 programPoint places, -68 predicate places. [2023-08-26 22:47:59,334 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 29 transitions, 109 flow [2023-08-26 22:47:59,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 232.85714285714286) internal successors, (1630), 7 states have internal predecessors, (1630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:47:59,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:47:59,335 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1] [2023-08-26 22:47:59,341 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-26 22:47:59,540 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,SelfDestructingSolverStorable11 [2023-08-26 22:47:59,540 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 27 more)] === [2023-08-26 22:47:59,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:47:59,541 INFO L85 PathProgramCache]: Analyzing trace with hash 568775435, now seen corresponding path program 1 times [2023-08-26 22:47:59,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:47:59,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833787523] [2023-08-26 22:47:59,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:47:59,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:47:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:47:59,560 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:47:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:47:59,577 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:47:59,578 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:47:59,578 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (29 of 30 remaining) [2023-08-26 22:47:59,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (28 of 30 remaining) [2023-08-26 22:47:59,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (27 of 30 remaining) [2023-08-26 22:47:59,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 30 remaining) [2023-08-26 22:47:59,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (25 of 30 remaining) [2023-08-26 22:47:59,578 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONASSERT (21 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (15 of 30 remaining) [2023-08-26 22:47:59,579 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (10 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (5 of 30 remaining) [2023-08-26 22:47:59,580 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 30 remaining) [2023-08-26 22:47:59,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 30 remaining) [2023-08-26 22:47:59,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 30 remaining) [2023-08-26 22:47:59,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 30 remaining) [2023-08-26 22:47:59,581 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONASSERT (0 of 30 remaining) [2023-08-26 22:47:59,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-26 22:47:59,581 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-26 22:47:59,582 WARN L233 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:47:59,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2023-08-26 22:47:59,612 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-26 22:47:59,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 349 transitions, 742 flow [2023-08-26 22:47:59,731 INFO L124 PetriNetUnfolderBase]: 136/902 cut-off events. [2023-08-26 22:47:59,731 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:47:59,749 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 902 events. 136/902 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4214 event pairs, 6 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 632. Up to 32 conditions per place. [2023-08-26 22:47:59,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 298 places, 349 transitions, 742 flow [2023-08-26 22:47:59,760 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 298 places, 349 transitions, 742 flow [2023-08-26 22:47:59,760 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:47:59,760 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 298 places, 349 transitions, 742 flow [2023-08-26 22:47:59,761 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 298 places, 349 transitions, 742 flow [2023-08-26 22:47:59,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 298 places, 349 transitions, 742 flow [2023-08-26 22:47:59,874 INFO L124 PetriNetUnfolderBase]: 136/902 cut-off events. [2023-08-26 22:47:59,874 INFO L125 PetriNetUnfolderBase]: For 48/48 co-relation queries the response was YES. [2023-08-26 22:47:59,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 902 events. 136/902 cut-off events. For 48/48 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 4214 event pairs, 6 based on Foata normal form. 0/683 useless extension candidates. Maximal degree in co-relation 632. Up to 32 conditions per place. [2023-08-26 22:47:59,932 INFO L119 LiptonReduction]: Number of co-enabled transitions 80712 [2023-08-26 22:48:03,536 INFO L134 LiptonReduction]: Checked pairs total: 245770 [2023-08-26 22:48:03,536 INFO L136 LiptonReduction]: Total number of compositions: 277 [2023-08-26 22:48:03,538 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:48:03,538 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;@6e99a3e8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:48:03,538 INFO L358 AbstractCegarLoop]: Starting to check reachability of 35 error locations. [2023-08-26 22:48:03,540 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:48:03,540 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-26 22:48:03,540 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:48:03,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:48:03,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-26 22:48:03,540 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 32 more)] === [2023-08-26 22:48:03,540 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:48:03,540 INFO L85 PathProgramCache]: Analyzing trace with hash -1994140902, now seen corresponding path program 1 times [2023-08-26 22:48:03,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:48:03,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600501709] [2023-08-26 22:48:03,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:48:03,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:48:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:48:03,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-26 22:48:03,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:48:03,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600501709] [2023-08-26 22:48:03,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600501709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:48:03,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:48:03,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:48:03,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005544700] [2023-08-26 22:48:03,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:48:03,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:48:03,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:48:03,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:48:03,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:48:03,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 276 out of 626 [2023-08-26 22:48:03,572 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 187 transitions, 418 flow. Second operand has 3 states, 3 states have (on average 277.6666666666667) internal successors, (833), 3 states have internal predecessors, (833), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:48:03,572 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:48:03,572 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 276 of 626 [2023-08-26 22:48:03,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand