/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_42-trylock2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-26 22:41:28,560 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-26 22:41:28,620 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 22:41:28,629 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-26 22:41:28,629 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-26 22:41:28,658 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-26 22:41:28,658 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-26 22:41:28,658 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-26 22:41:28,659 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-26 22:41:28,662 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-26 22:41:28,662 INFO L153 SettingsManager]: * Use SBE=true [2023-08-26 22:41:28,662 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-26 22:41:28,662 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-26 22:41:28,663 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-26 22:41:28,663 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-26 22:41:28,663 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-26 22:41:28,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-26 22:41:28,664 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-26 22:41:28,664 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-26 22:41:28,664 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-26 22:41:28,664 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-26 22:41:28,665 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-26 22:41:28,665 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-26 22:41:28,665 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-26 22:41:28,665 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-26 22:41:28,666 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-26 22:41:28,666 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-26 22:41:28,666 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:41:28,667 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-26 22:41:28,667 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-26 22:41:28,668 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-26 22:41:28,668 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-26 22:41:28,668 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-26 22:41:28,668 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-26 22:41:28,668 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-26 22:41:28,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-26 22:41:28,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-26 22:41:28,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-26 22:41:28,918 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-26 22:41:28,919 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-26 22:41:28,919 INFO L274 PluginConnector]: CDTParser initialized [2023-08-26 22:41:28,920 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-26 22:41:30,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-26 22:41:30,295 INFO L384 CDTParser]: Found 1 translation units. [2023-08-26 22:41:30,295 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_42-trylock2_racefree.i [2023-08-26 22:41:30,304 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623a87c25/596f4928a3054dba8686fefb4598c339/FLAGc42d0150c [2023-08-26 22:41:30,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/623a87c25/596f4928a3054dba8686fefb4598c339 [2023-08-26 22:41:30,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-26 22:41:30,319 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-26 22:41:30,320 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-26 22:41:30,320 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-26 22:41:30,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-26 22:41:30,322 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,323 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11445aa5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30, skipping insertion in model container [2023-08-26 22:41:30,323 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,352 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-26 22:41:30,531 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:41:30,541 INFO L201 MainTranslator]: Completed pre-run [2023-08-26 22:41:30,553 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:41:30,554 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-26 22:41:30,598 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-26 22:41:30,630 INFO L206 MainTranslator]: Completed translation [2023-08-26 22:41:30,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30 WrapperNode [2023-08-26 22:41:30,630 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-26 22:41:30,631 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-26 22:41:30,631 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-26 22:41:30,631 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-26 22:41:30,635 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,680 INFO L138 Inliner]: procedures = 171, calls = 48, calls flagged for inlining = 7, calls inlined = 10, statements flattened = 148 [2023-08-26 22:41:30,680 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-26 22:41:30,681 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-26 22:41:30,682 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-26 22:41:30,682 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-26 22:41:30,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,687 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,701 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,701 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,713 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,716 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,717 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,717 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,719 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-26 22:41:30,720 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-26 22:41:30,720 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-26 22:41:30,720 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-26 22:41:30,720 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (1/1) ... [2023-08-26 22:41:30,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-26 22:41:30,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:41:30,745 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 22:41:30,750 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 22:41:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-26 22:41:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-26 22:41:30,768 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-26 22:41:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexTryLock [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-26 22:41:30,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-26 22:41:30,769 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-26 22:41:30,770 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 22:41:30,847 INFO L236 CfgBuilder]: Building ICFG [2023-08-26 22:41:30,848 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-26 22:41:31,043 INFO L277 CfgBuilder]: Performing block encoding [2023-08-26 22:41:31,049 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-26 22:41:31,049 INFO L302 CfgBuilder]: Removed 23 assume(true) statements. [2023-08-26 22:41:31,051 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:31 BoogieIcfgContainer [2023-08-26 22:41:31,051 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-26 22:41:31,052 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-26 22:41:31,052 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-26 22:41:31,057 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-26 22:41:31,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.08 10:41:30" (1/3) ... [2023-08-26 22:41:31,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec2f57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:31, skipping insertion in model container [2023-08-26 22:41:31,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.08 10:41:30" (2/3) ... [2023-08-26 22:41:31,058 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ec2f57f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.08 10:41:31, skipping insertion in model container [2023-08-26 22:41:31,058 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.08 10:41:31" (3/3) ... [2023-08-26 22:41:31,059 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_42-trylock2_racefree.i [2023-08-26 22:41:31,069 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-26 22:41:31,070 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2023-08-26 22:41:31,070 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-26 22:41:31,109 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-26 22:41:31,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 196 places, 226 transitions, 460 flow [2023-08-26 22:41:31,235 INFO L124 PetriNetUnfolderBase]: 53/329 cut-off events. [2023-08-26 22:41:31,235 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:41:31,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 335 conditions, 329 events. 53/329 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1311 event pairs, 0 based on Foata normal form. 0/253 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2023-08-26 22:41:31,249 INFO L82 GeneralOperation]: Start removeDead. Operand has 196 places, 226 transitions, 460 flow [2023-08-26 22:41:31,256 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 194 places, 223 transitions, 454 flow [2023-08-26 22:41:31,258 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:41:31,263 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 194 places, 223 transitions, 454 flow [2023-08-26 22:41:31,265 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 194 places, 223 transitions, 454 flow [2023-08-26 22:41:31,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 194 places, 223 transitions, 454 flow [2023-08-26 22:41:31,298 INFO L124 PetriNetUnfolderBase]: 52/326 cut-off events. [2023-08-26 22:41:31,298 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:41:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332 conditions, 326 events. 52/326 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1308 event pairs, 0 based on Foata normal form. 0/251 useless extension candidates. Maximal degree in co-relation 181. Up to 6 conditions per place. [2023-08-26 22:41:31,303 INFO L119 LiptonReduction]: Number of co-enabled transitions 15594 [2023-08-26 22:41:34,546 INFO L134 LiptonReduction]: Checked pairs total: 33672 [2023-08-26 22:41:34,546 INFO L136 LiptonReduction]: Total number of compositions: 206 [2023-08-26 22:41:34,560 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:41:34,563 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;@48f000ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:41:34,564 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2023-08-26 22:41:34,566 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:41:34,566 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-26 22:41:34,567 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:41:34,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:34,567 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:41:34,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 22 more)] === [2023-08-26 22:41:34,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:34,570 INFO L85 PathProgramCache]: Analyzing trace with hash 27428894, now seen corresponding path program 1 times [2023-08-26 22:41:34,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:34,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348395947] [2023-08-26 22:41:34,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:34,587 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:34,738 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 22:41:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348395947] [2023-08-26 22:41:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348395947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:34,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:34,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:34,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468182363] [2023-08-26 22:41:34,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:34,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:34,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:34,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 432 [2023-08-26 22:41:34,764 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 95 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 22:41:34,764 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:34,764 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 432 [2023-08-26 22:41:34,765 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:34,941 INFO L124 PetriNetUnfolderBase]: 601/1358 cut-off events. [2023-08-26 22:41:34,941 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-26 22:41:34,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2620 conditions, 1358 events. 601/1358 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 7955 event pairs, 0 based on Foata normal form. 175/1157 useless extension candidates. Maximal degree in co-relation 2552. Up to 1205 conditions per place. [2023-08-26 22:41:34,947 INFO L140 encePairwiseOnDemand]: 400/432 looper letters, 77 selfloop transitions, 2 changer transitions 0/86 dead transitions. [2023-08-26 22:41:34,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 86 transitions, 338 flow [2023-08-26 22:41:34,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:34,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:34,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 664 transitions. [2023-08-26 22:41:34,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5123456790123457 [2023-08-26 22:41:34,957 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 664 transitions. [2023-08-26 22:41:34,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 664 transitions. [2023-08-26 22:41:34,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:34,960 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 664 transitions. [2023-08-26 22:41:34,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 221.33333333333334) internal successors, (664), 3 states have internal predecessors, (664), 0 states have call successors, (0), 0 states 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 22:41:34,966 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 22:41:34,967 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 22:41:34,968 INFO L175 Difference]: Start difference. First operand has 71 places, 95 transitions, 198 flow. Second operand 3 states and 664 transitions. [2023-08-26 22:41:34,969 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 86 transitions, 338 flow [2023-08-26 22:41:34,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 86 transitions, 338 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:41:34,973 INFO L231 Difference]: Finished difference. Result has 66 places, 61 transitions, 138 flow [2023-08-26 22:41:34,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=66, PETRI_TRANSITIONS=61} [2023-08-26 22:41:34,976 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -5 predicate places. [2023-08-26 22:41:34,976 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 61 transitions, 138 flow [2023-08-26 22:41:34,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states 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 22:41:34,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:34,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-26 22:41:34,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-26 22:41:34,977 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 22 more)] === [2023-08-26 22:41:34,977 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:34,977 INFO L85 PathProgramCache]: Analyzing trace with hash 589313285, now seen corresponding path program 1 times [2023-08-26 22:41:34,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:34,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401084643] [2023-08-26 22:41:34,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:34,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:35,031 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 22:41:35,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:35,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401084643] [2023-08-26 22:41:35,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401084643] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:35,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:35,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:35,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93108070] [2023-08-26 22:41:35,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:35,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:35,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:35,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:35,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:35,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 432 [2023-08-26 22:41:35,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 61 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 22:41:35,034 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:35,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 432 [2023-08-26 22:41:35,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:35,157 INFO L124 PetriNetUnfolderBase]: 578/1204 cut-off events. [2023-08-26 22:41:35,157 INFO L125 PetriNetUnfolderBase]: For 43/43 co-relation queries the response was YES. [2023-08-26 22:41:35,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2451 conditions, 1204 events. 578/1204 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 6548 event pairs, 135 based on Foata normal form. 0/899 useless extension candidates. Maximal degree in co-relation 2424. Up to 1059 conditions per place. [2023-08-26 22:41:35,161 INFO L140 encePairwiseOnDemand]: 424/432 looper letters, 71 selfloop transitions, 2 changer transitions 0/80 dead transitions. [2023-08-26 22:41:35,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 80 transitions, 327 flow [2023-08-26 22:41:35,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:35,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:35,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 622 transitions. [2023-08-26 22:41:35,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4799382716049383 [2023-08-26 22:41:35,163 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 622 transitions. [2023-08-26 22:41:35,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 622 transitions. [2023-08-26 22:41:35,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:35,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 622 transitions. [2023-08-26 22:41:35,164 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 207.33333333333334) internal successors, (622), 3 states have internal predecessors, (622), 0 states have call successors, (0), 0 states 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 22:41:35,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 22:41:35,167 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 432.0) internal successors, (1728), 4 states have internal predecessors, (1728), 0 states have call successors, (0), 0 states 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 22:41:35,167 INFO L175 Difference]: Start difference. First operand has 66 places, 61 transitions, 138 flow. Second operand 3 states and 622 transitions. [2023-08-26 22:41:35,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 80 transitions, 327 flow [2023-08-26 22:41:35,168 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 80 transitions, 321 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:41:35,169 INFO L231 Difference]: Finished difference. Result has 65 places, 59 transitions, 144 flow [2023-08-26 22:41:35,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=432, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=65, PETRI_TRANSITIONS=59} [2023-08-26 22:41:35,169 INFO L281 CegarLoopForPetriNet]: 71 programPoint places, -6 predicate places. [2023-08-26 22:41:35,169 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 59 transitions, 144 flow [2023-08-26 22:41:35,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 182.66666666666666) internal successors, (548), 3 states have internal predecessors, (548), 0 states have call successors, (0), 0 states 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 22:41:35,170 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:35,170 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-26 22:41:35,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-26 22:41:35,170 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 22 more)] === [2023-08-26 22:41:35,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:35,171 INFO L85 PathProgramCache]: Analyzing trace with hash 589405336, now seen corresponding path program 1 times [2023-08-26 22:41:35,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:35,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557128271] [2023-08-26 22:41:35,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:35,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:35,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:35,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:41:35,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:41:35,207 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:41:35,207 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:41:35,208 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (24 of 25 remaining) [2023-08-26 22:41:35,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 25 remaining) [2023-08-26 22:41:35,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 25 remaining) [2023-08-26 22:41:35,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (21 of 25 remaining) [2023-08-26 22:41:35,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (20 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (19 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (17 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 25 remaining) [2023-08-26 22:41:35,210 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 25 remaining) [2023-08-26 22:41:35,211 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 25 remaining) [2023-08-26 22:41:35,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 25 remaining) [2023-08-26 22:41:35,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 25 remaining) [2023-08-26 22:41:35,212 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 25 remaining) [2023-08-26 22:41:35,212 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-26 22:41:35,212 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-26 22:41:35,214 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:41:35,214 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-26 22:41:35,231 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-26 22:41:35,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 297 transitions, 612 flow [2023-08-26 22:41:35,276 INFO L124 PetriNetUnfolderBase]: 88/540 cut-off events. [2023-08-26 22:41:35,276 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:41:35,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 540 events. 88/540 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2450 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-26 22:41:35,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 297 transitions, 612 flow [2023-08-26 22:41:35,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 297 transitions, 612 flow [2023-08-26 22:41:35,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:41:35,282 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 297 transitions, 612 flow [2023-08-26 22:41:35,282 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 297 transitions, 612 flow [2023-08-26 22:41:35,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 297 transitions, 612 flow [2023-08-26 22:41:35,316 INFO L124 PetriNetUnfolderBase]: 88/540 cut-off events. [2023-08-26 22:41:35,317 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-26 22:41:35,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554 conditions, 540 events. 88/540 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2450 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 331. Up to 9 conditions per place. [2023-08-26 22:41:35,332 INFO L119 LiptonReduction]: Number of co-enabled transitions 43332 [2023-08-26 22:41:38,498 INFO L134 LiptonReduction]: Checked pairs total: 116451 [2023-08-26 22:41:38,498 INFO L136 LiptonReduction]: Total number of compositions: 243 [2023-08-26 22:41:38,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:41:38,500 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;@48f000ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:41:38,500 INFO L358 AbstractCegarLoop]: Starting to check reachability of 33 error locations. [2023-08-26 22:41:38,502 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:41:38,502 INFO L124 PetriNetUnfolderBase]: 2/13 cut-off events. [2023-08-26 22:41:38,502 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:41:38,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:38,503 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:41:38,503 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:41:38,503 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:38,503 INFO L85 PathProgramCache]: Analyzing trace with hash 46249459, now seen corresponding path program 1 times [2023-08-26 22:41:38,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:38,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960489533] [2023-08-26 22:41:38,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:38,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:38,526 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 22:41:38,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:38,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960489533] [2023-08-26 22:41:38,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960489533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:38,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:38,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:41:38,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105025960] [2023-08-26 22:41:38,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:38,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:38,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:38,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:38,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:38,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 540 [2023-08-26 22:41:38,529 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 143 transitions, 304 flow. Second operand has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 22:41:38,529 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:38,529 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 540 [2023-08-26 22:41:38,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:41,906 INFO L124 PetriNetUnfolderBase]: 37248/59156 cut-off events. [2023-08-26 22:41:41,906 INFO L125 PetriNetUnfolderBase]: For 118/118 co-relation queries the response was YES. [2023-08-26 22:41:41,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116368 conditions, 59156 events. 37248/59156 cut-off events. For 118/118 co-relation queries the response was YES. Maximal size of possible extension queue 1291. Compared 465913 event pairs, 26319 based on Foata normal form. 8058/48088 useless extension candidates. Maximal degree in co-relation 40114. Up to 57017 conditions per place. [2023-08-26 22:41:42,167 INFO L140 encePairwiseOnDemand]: 498/540 looper letters, 110 selfloop transitions, 2 changer transitions 0/128 dead transitions. [2023-08-26 22:41:42,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 128 transitions, 498 flow [2023-08-26 22:41:42,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:42,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 878 transitions. [2023-08-26 22:41:42,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5419753086419753 [2023-08-26 22:41:42,170 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 878 transitions. [2023-08-26 22:41:42,170 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 878 transitions. [2023-08-26 22:41:42,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:42,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 878 transitions. [2023-08-26 22:41:42,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 292.6666666666667) internal successors, (878), 3 states have internal predecessors, (878), 0 states have call successors, (0), 0 states 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 22:41:42,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 22:41:42,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 22:41:42,175 INFO L175 Difference]: Start difference. First operand has 108 places, 143 transitions, 304 flow. Second operand 3 states and 878 transitions. [2023-08-26 22:41:42,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 128 transitions, 498 flow [2023-08-26 22:41:42,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 128 transitions, 498 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-26 22:41:42,181 INFO L231 Difference]: Finished difference. Result has 107 places, 103 transitions, 238 flow [2023-08-26 22:41:42,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=107, PETRI_TRANSITIONS=103} [2023-08-26 22:41:42,183 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, -1 predicate places. [2023-08-26 22:41:42,184 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 103 transitions, 238 flow [2023-08-26 22:41:42,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 239.33333333333334) internal successors, (718), 3 states have internal predecessors, (718), 0 states have call successors, (0), 0 states 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 22:41:42,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:42,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:42,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-26 22:41:42,185 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:41:42,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:42,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1618566506, now seen corresponding path program 1 times [2023-08-26 22:41:42,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:42,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99588807] [2023-08-26 22:41:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:42,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:42,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:42,251 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 22:41:42,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:42,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99588807] [2023-08-26 22:41:42,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [99588807] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:42,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:42,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-26 22:41:42,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499308061] [2023-08-26 22:41:42,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:42,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:42,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:42,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:42,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:42,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 234 out of 540 [2023-08-26 22:41:42,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 103 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:42,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:42,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 234 of 540 [2023-08-26 22:41:42,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:45,150 INFO L124 PetriNetUnfolderBase]: 38891/61438 cut-off events. [2023-08-26 22:41:45,150 INFO L125 PetriNetUnfolderBase]: For 1601/1601 co-relation queries the response was YES. [2023-08-26 22:41:45,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 124016 conditions, 61438 events. 38891/61438 cut-off events. For 1601/1601 co-relation queries the response was YES. Maximal size of possible extension queue 1314. Compared 481077 event pairs, 17596 based on Foata normal form. 0/42976 useless extension candidates. Maximal degree in co-relation 123853. Up to 58411 conditions per place. [2023-08-26 22:41:45,537 INFO L140 encePairwiseOnDemand]: 529/540 looper letters, 120 selfloop transitions, 3 changer transitions 0/137 dead transitions. [2023-08-26 22:41:45,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 137 transitions, 568 flow [2023-08-26 22:41:45,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:45,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:45,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 831 transitions. [2023-08-26 22:41:45,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.512962962962963 [2023-08-26 22:41:45,539 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 831 transitions. [2023-08-26 22:41:45,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 831 transitions. [2023-08-26 22:41:45,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:45,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 831 transitions. [2023-08-26 22:41:45,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 277.0) internal successors, (831), 3 states have internal predecessors, (831), 0 states have call successors, (0), 0 states 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 22:41:45,543 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 22:41:45,544 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 22:41:45,544 INFO L175 Difference]: Start difference. First operand has 107 places, 103 transitions, 238 flow. Second operand 3 states and 831 transitions. [2023-08-26 22:41:45,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 137 transitions, 568 flow [2023-08-26 22:41:45,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 137 transitions, 565 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:45,547 INFO L231 Difference]: Finished difference. Result has 109 places, 105 transitions, 269 flow [2023-08-26 22:41:45,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=269, PETRI_PLACES=109, PETRI_TRANSITIONS=105} [2023-08-26 22:41:45,547 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 1 predicate places. [2023-08-26 22:41:45,547 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 105 transitions, 269 flow [2023-08-26 22:41:45,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-26 22:41:45,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:45,548 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:41:45,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-26 22:41:45,548 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:41:45,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:45,549 INFO L85 PathProgramCache]: Analyzing trace with hash 538202205, now seen corresponding path program 1 times [2023-08-26 22:41:45,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:45,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525834547] [2023-08-26 22:41:45,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:45,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:45,577 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 22:41:45,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:45,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525834547] [2023-08-26 22:41:45,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525834547] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:45,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:45,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:41:45,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100946149] [2023-08-26 22:41:45,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:45,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:41:45,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:45,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:41:45,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:41:45,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 540 [2023-08-26 22:41:45,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 105 transitions, 269 flow. Second operand has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 22:41:45,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:45,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 540 [2023-08-26 22:41:45,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:48,324 INFO L124 PetriNetUnfolderBase]: 35698/57393 cut-off events. [2023-08-26 22:41:48,325 INFO L125 PetriNetUnfolderBase]: For 2508/2508 co-relation queries the response was YES. [2023-08-26 22:41:48,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119774 conditions, 57393 events. 35698/57393 cut-off events. For 2508/2508 co-relation queries the response was YES. Maximal size of possible extension queue 1216. Compared 475618 event pairs, 3306 based on Foata normal form. 0/43701 useless extension candidates. Maximal degree in co-relation 93217. Up to 49477 conditions per place. [2023-08-26 22:41:48,521 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 133 selfloop transitions, 4 changer transitions 0/155 dead transitions. [2023-08-26 22:41:48,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 155 transitions, 649 flow [2023-08-26 22:41:48,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-26 22:41:48,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-26 22:41:48,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 851 transitions. [2023-08-26 22:41:48,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5253086419753087 [2023-08-26 22:41:48,524 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 851 transitions. [2023-08-26 22:41:48,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 851 transitions. [2023-08-26 22:41:48,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:48,524 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 851 transitions. [2023-08-26 22:41:48,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 283.6666666666667) internal successors, (851), 3 states have internal predecessors, (851), 0 states have call successors, (0), 0 states 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 22:41:48,530 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 22:41:48,530 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 540.0) internal successors, (2160), 4 states have internal predecessors, (2160), 0 states have call successors, (0), 0 states 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 22:41:48,530 INFO L175 Difference]: Start difference. First operand has 109 places, 105 transitions, 269 flow. Second operand 3 states and 851 transitions. [2023-08-26 22:41:48,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 155 transitions, 649 flow [2023-08-26 22:41:48,535 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 155 transitions, 646 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:48,537 INFO L231 Difference]: Finished difference. Result has 110 places, 105 transitions, 278 flow [2023-08-26 22:41:48,537 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=278, PETRI_PLACES=110, PETRI_TRANSITIONS=105} [2023-08-26 22:41:48,539 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 2 predicate places. [2023-08-26 22:41:48,540 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 105 transitions, 278 flow [2023-08-26 22:41:48,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 240.33333333333334) internal successors, (721), 3 states have internal predecessors, (721), 0 states have call successors, (0), 0 states 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 22:41:48,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:48,540 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-26 22:41:48,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-26 22:41:48,540 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:41:48,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:48,541 INFO L85 PathProgramCache]: Analyzing trace with hash 538202206, now seen corresponding path program 1 times [2023-08-26 22:41:48,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:48,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100108383] [2023-08-26 22:41:48,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:48,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:48,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:48,569 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 22:41:48,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:48,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100108383] [2023-08-26 22:41:48,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1100108383] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-26 22:41:48,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586395652] [2023-08-26 22:41:48,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:48,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:41:48,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-26 22:41:48,572 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 22:41:48,573 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 22:41:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:48,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-26 22:41:48,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-26 22:41:48,696 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 22:41:48,696 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-26 22:41:48,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586395652] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:48,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-26 22:41:48,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 3 [2023-08-26 22:41:48,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350859343] [2023-08-26 22:41:48,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:48,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-26 22:41:48,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:48,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-26 22:41:48,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:41:48,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 238 out of 540 [2023-08-26 22:41:48,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 105 transitions, 278 flow. Second operand has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 22:41:48,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:48,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 238 of 540 [2023-08-26 22:41:48,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:51,598 INFO L124 PetriNetUnfolderBase]: 34411/55501 cut-off events. [2023-08-26 22:41:51,598 INFO L125 PetriNetUnfolderBase]: For 7902/7904 co-relation queries the response was YES. [2023-08-26 22:41:51,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117323 conditions, 55501 events. 34411/55501 cut-off events. For 7902/7904 co-relation queries the response was YES. Maximal size of possible extension queue 1164. Compared 460396 event pairs, 1520 based on Foata normal form. 681/43555 useless extension candidates. Maximal degree in co-relation 12608. Up to 47465 conditions per place. [2023-08-26 22:41:51,814 INFO L140 encePairwiseOnDemand]: 536/540 looper letters, 155 selfloop transitions, 3 changer transitions 0/176 dead transitions. [2023-08-26 22:41:51,814 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 176 transitions, 742 flow [2023-08-26 22:41:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-26 22:41:51,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-26 22:41:51,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1111 transitions. [2023-08-26 22:41:51,817 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5143518518518518 [2023-08-26 22:41:51,817 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1111 transitions. [2023-08-26 22:41:51,817 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1111 transitions. [2023-08-26 22:41:51,818 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:51,818 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1111 transitions. [2023-08-26 22:41:51,820 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 277.75) internal successors, (1111), 4 states have internal predecessors, (1111), 0 states have call successors, (0), 0 states 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 22:41:51,822 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 22:41:51,823 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 540.0) internal successors, (2700), 5 states have internal predecessors, (2700), 0 states have call successors, (0), 0 states 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 22:41:51,823 INFO L175 Difference]: Start difference. First operand has 110 places, 105 transitions, 278 flow. Second operand 4 states and 1111 transitions. [2023-08-26 22:41:51,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 176 transitions, 742 flow [2023-08-26 22:41:51,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 176 transitions, 738 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:41:51,831 INFO L231 Difference]: Finished difference. Result has 111 places, 104 transitions, 276 flow [2023-08-26 22:41:51,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=276, PETRI_PLACES=111, PETRI_TRANSITIONS=104} [2023-08-26 22:41:51,831 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 3 predicate places. [2023-08-26 22:41:51,831 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 104 transitions, 276 flow [2023-08-26 22:41:51,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 239.75) internal successors, (959), 4 states have internal predecessors, (959), 0 states have call successors, (0), 0 states 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 22:41:51,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:51,832 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:51,839 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 22:41:52,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-26 22:41:52,038 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:41:52,038 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:52,038 INFO L85 PathProgramCache]: Analyzing trace with hash 1708030349, now seen corresponding path program 1 times [2023-08-26 22:41:52,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:52,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301132491] [2023-08-26 22:41:52,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:52,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:52,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:52,105 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 22:41:52,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:52,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301132491] [2023-08-26 22:41:52,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301132491] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:52,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:52,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:41:52,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611040702] [2023-08-26 22:41:52,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:52,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:41:52,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:52,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:41:52,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:41:52,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 540 [2023-08-26 22:41:52,109 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 104 transitions, 276 flow. Second operand has 5 states, 5 states have (on average 230.8) internal successors, (1154), 5 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 22:41:52,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:52,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 540 [2023-08-26 22:41:52,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:41:55,869 INFO L124 PetriNetUnfolderBase]: 43354/69279 cut-off events. [2023-08-26 22:41:55,870 INFO L125 PetriNetUnfolderBase]: For 11319/11319 co-relation queries the response was YES. [2023-08-26 22:41:55,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148360 conditions, 69279 events. 43354/69279 cut-off events. For 11319/11319 co-relation queries the response was YES. Maximal size of possible extension queue 1554. Compared 560469 event pairs, 11748 based on Foata normal form. 0/54288 useless extension candidates. Maximal degree in co-relation 136476. Up to 50376 conditions per place. [2023-08-26 22:41:56,130 INFO L140 encePairwiseOnDemand]: 525/540 looper letters, 322 selfloop transitions, 19 changer transitions 0/355 dead transitions. [2023-08-26 22:41:56,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 355 transitions, 1608 flow [2023-08-26 22:41:56,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:41:56,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:41:56,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1944 transitions. [2023-08-26 22:41:56,133 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5142857142857142 [2023-08-26 22:41:56,134 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1944 transitions. [2023-08-26 22:41:56,134 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1944 transitions. [2023-08-26 22:41:56,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:41:56,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1944 transitions. [2023-08-26 22:41:56,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.7142857142857) internal successors, (1944), 7 states have internal predecessors, (1944), 0 states have call successors, (0), 0 states 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 22:41:56,141 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 22:41:56,141 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 22:41:56,141 INFO L175 Difference]: Start difference. First operand has 111 places, 104 transitions, 276 flow. Second operand 7 states and 1944 transitions. [2023-08-26 22:41:56,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 355 transitions, 1608 flow [2023-08-26 22:41:56,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 355 transitions, 1595 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-26 22:41:56,146 INFO L231 Difference]: Finished difference. Result has 120 places, 120 transitions, 431 flow [2023-08-26 22:41:56,147 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=431, PETRI_PLACES=120, PETRI_TRANSITIONS=120} [2023-08-26 22:41:56,147 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 12 predicate places. [2023-08-26 22:41:56,147 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 120 transitions, 431 flow [2023-08-26 22:41:56,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.8) internal successors, (1154), 5 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 22:41:56,147 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:41:56,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:41:56,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-26 22:41:56,148 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:41:56,148 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:41:56,148 INFO L85 PathProgramCache]: Analyzing trace with hash 1708030350, now seen corresponding path program 1 times [2023-08-26 22:41:56,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:41:56,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70041720] [2023-08-26 22:41:56,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:41:56,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:41:56,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:41:56,182 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 22:41:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:41:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70041720] [2023-08-26 22:41:56,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70041720] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:41:56,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:41:56,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-26 22:41:56,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162060115] [2023-08-26 22:41:56,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:41:56,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-26 22:41:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:41:56,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-26 22:41:56,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-26 22:41:56,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 540 [2023-08-26 22:41:56,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 120 transitions, 431 flow. Second operand has 5 states, 5 states have (on average 230.8) internal successors, (1154), 5 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 22:41:56,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:41:56,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 540 [2023-08-26 22:41:56,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-26 22:42:00,357 INFO L124 PetriNetUnfolderBase]: 43089/69702 cut-off events. [2023-08-26 22:42:00,357 INFO L125 PetriNetUnfolderBase]: For 39931/39931 co-relation queries the response was YES. [2023-08-26 22:42:00,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167466 conditions, 69702 events. 43089/69702 cut-off events. For 39931/39931 co-relation queries the response was YES. Maximal size of possible extension queue 1604. Compared 575924 event pairs, 11620 based on Foata normal form. 965/59746 useless extension candidates. Maximal degree in co-relation 155067. Up to 52052 conditions per place. [2023-08-26 22:42:00,622 INFO L140 encePairwiseOnDemand]: 525/540 looper letters, 325 selfloop transitions, 24 changer transitions 0/363 dead transitions. [2023-08-26 22:42:00,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 363 transitions, 1796 flow [2023-08-26 22:42:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-26 22:42:00,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-26 22:42:00,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1941 transitions. [2023-08-26 22:42:00,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5134920634920634 [2023-08-26 22:42:00,626 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1941 transitions. [2023-08-26 22:42:00,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1941 transitions. [2023-08-26 22:42:00,627 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-26 22:42:00,627 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1941 transitions. [2023-08-26 22:42:00,629 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 277.2857142857143) internal successors, (1941), 7 states have internal predecessors, (1941), 0 states have call successors, (0), 0 states 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 22:42:00,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 22:42:00,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 540.0) internal successors, (4320), 8 states have internal predecessors, (4320), 0 states have call successors, (0), 0 states 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 22:42:00,633 INFO L175 Difference]: Start difference. First operand has 120 places, 120 transitions, 431 flow. Second operand 7 states and 1941 transitions. [2023-08-26 22:42:00,633 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 363 transitions, 1796 flow [2023-08-26 22:42:00,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 363 transitions, 1792 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-26 22:42:00,689 INFO L231 Difference]: Finished difference. Result has 129 places, 132 transitions, 621 flow [2023-08-26 22:42:00,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=540, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=621, PETRI_PLACES=129, PETRI_TRANSITIONS=132} [2023-08-26 22:42:00,689 INFO L281 CegarLoopForPetriNet]: 108 programPoint places, 21 predicate places. [2023-08-26 22:42:00,689 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 132 transitions, 621 flow [2023-08-26 22:42:00,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 230.8) internal successors, (1154), 5 states have internal predecessors, (1154), 0 states have call successors, (0), 0 states 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 22:42:00,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:00,690 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-26 22:42:00,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-26 22:42:00,690 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 30 more)] === [2023-08-26 22:42:00,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:00,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1816339169, now seen corresponding path program 1 times [2023-08-26 22:42:00,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:00,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490126112] [2023-08-26 22:42:00,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:00,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:42:00,699 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-26 22:42:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-26 22:42:00,707 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-26 22:42:00,707 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-26 22:42:00,707 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (32 of 33 remaining) [2023-08-26 22:42:00,707 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (31 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (30 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (29 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONASSERT (28 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONASSERT (27 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (26 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONASSERT (25 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (24 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (23 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (22 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (21 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (20 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (19 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (18 of 33 remaining) [2023-08-26 22:42:00,708 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (17 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (16 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (9 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (8 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONINTEGER_OVERFLOW (7 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr2ASSERT_VIOLATIONINTEGER_OVERFLOW (6 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr1ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr3ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr4ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 33 remaining) [2023-08-26 22:42:00,709 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr6ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 33 remaining) [2023-08-26 22:42:00,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr5ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 33 remaining) [2023-08-26 22:42:00,710 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr7ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 33 remaining) [2023-08-26 22:42:00,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-26 22:42:00,710 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-26 22:42:00,710 WARN L233 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-26 22:42:00,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2023-08-26 22:42:00,728 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2023-08-26 22:42:00,731 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 368 transitions, 766 flow [2023-08-26 22:42:00,797 INFO L124 PetriNetUnfolderBase]: 128/792 cut-off events. [2023-08-26 22:42:00,797 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:42:00,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 792 events. 128/792 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3798 event pairs, 1 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 548. Up to 16 conditions per place. [2023-08-26 22:42:00,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 316 places, 368 transitions, 766 flow [2023-08-26 22:42:00,806 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 316 places, 368 transitions, 766 flow [2023-08-26 22:42:00,806 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-26 22:42:00,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 316 places, 368 transitions, 766 flow [2023-08-26 22:42:00,807 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 316 places, 368 transitions, 766 flow [2023-08-26 22:42:00,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 316 places, 368 transitions, 766 flow [2023-08-26 22:42:00,871 INFO L124 PetriNetUnfolderBase]: 128/792 cut-off events. [2023-08-26 22:42:00,871 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2023-08-26 22:42:00,875 INFO L83 FinitePrefix]: Finished finitePrefix Result has 820 conditions, 792 events. 128/792 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3798 event pairs, 1 based on Foata normal form. 0/600 useless extension candidates. Maximal degree in co-relation 548. Up to 16 conditions per place. [2023-08-26 22:42:00,892 INFO L119 LiptonReduction]: Number of co-enabled transitions 79902 [2023-08-26 22:42:04,561 INFO L134 LiptonReduction]: Checked pairs total: 231547 [2023-08-26 22:42:04,561 INFO L136 LiptonReduction]: Total number of compositions: 282 [2023-08-26 22:42:04,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-26 22:42:04,562 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;@48f000ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-26 22:42:04,562 INFO L358 AbstractCegarLoop]: Starting to check reachability of 41 error locations. [2023-08-26 22:42:04,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-26 22:42:04,564 INFO L124 PetriNetUnfolderBase]: 2/15 cut-off events. [2023-08-26 22:42:04,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-26 22:42:04,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-26 22:42:04,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-26 22:42:04,564 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONASSERT === [ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONASSERT (and 38 more)] === [2023-08-26 22:42:04,565 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-26 22:42:04,565 INFO L85 PathProgramCache]: Analyzing trace with hash 68453689, now seen corresponding path program 1 times [2023-08-26 22:42:04,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-26 22:42:04,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228032566] [2023-08-26 22:42:04,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-26 22:42:04,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-26 22:42:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-26 22:42:04,579 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 22:42:04,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-26 22:42:04,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228032566] [2023-08-26 22:42:04,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228032566] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-26 22:42:04,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-26 22:42:04,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-26 22:42:04,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1114867088] [2023-08-26 22:42:04,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-26 22:42:04,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-26 22:42:04,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-26 22:42:04,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-26 22:42:04,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-26 22:42:04,581 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 295 out of 650 [2023-08-26 22:42:04,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 188 transitions, 406 flow. Second operand has 3 states, 3 states have (on average 296.3333333333333) internal successors, (889), 3 states have internal predecessors, (889), 0 states have call successors, (0), 0 states 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 22:42:04,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-26 22:42:04,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 295 of 650 [2023-08-26 22:42:04,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand