/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --cacsl2boogietranslator.check.absence.of.signed.integer.overflows true -i ../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-27 03:51:53,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-27 03:51:53,400 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-27 03:51:53,405 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-27 03:51:53,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-27 03:51:53,436 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-27 03:51:53,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-27 03:51:53,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-27 03:51:53,438 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-27 03:51:53,441 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-27 03:51:53,441 INFO L153 SettingsManager]: * Use SBE=true [2023-08-27 03:51:53,442 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-27 03:51:53,442 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-27 03:51:53,443 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-27 03:51:53,443 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-27 03:51:53,443 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-27 03:51:53,443 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-27 03:51:53,444 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-27 03:51:53,444 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-27 03:51:53,444 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-27 03:51:53,444 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-27 03:51:53,445 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-27 03:51:53,445 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-27 03:51:53,446 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-27 03:51:53,446 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-27 03:51:53,446 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-27 03:51:53,446 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-27 03:51:53,447 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:51:53,447 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-27 03:51:53,447 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-27 03:51:53,448 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-27 03:51:53,448 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-27 03:51:53,448 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-27 03:51:53,448 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-27 03:51:53,449 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-27 03:51:53,449 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check absence of signed integer overflows -> true [2023-08-27 03:51:53,741 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-27 03:51:53,758 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-27 03:51:53,760 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-27 03:51:53,761 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-27 03:51:53,761 INFO L274 PluginConnector]: CDTParser initialized [2023-08-27 03:51:53,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 03:51:54,870 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-27 03:51:55,174 INFO L384 CDTParser]: Found 1 translation units. [2023-08-27 03:51:55,175 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 03:51:55,190 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb614a23/efd70b93e72047bab51a60eeccb81335/FLAG956b7fb3a [2023-08-27 03:51:55,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bcb614a23/efd70b93e72047bab51a60eeccb81335 [2023-08-27 03:51:55,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-27 03:51:55,206 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-27 03:51:55,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-27 03:51:55,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-27 03:51:55,209 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-27 03:51:55,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,210 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18cc7b67 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55, skipping insertion in model container [2023-08-27 03:51:55,210 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,258 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-27 03:51:55,582 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:51:55,592 INFO L201 MainTranslator]: Completed pre-run [2023-08-27 03:51:55,618 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:51:55,620 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-27 03:51:55,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-27 03:51:55,687 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:51:55,687 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-27 03:51:55,693 INFO L206 MainTranslator]: Completed translation [2023-08-27 03:51:55,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55 WrapperNode [2023-08-27 03:51:55,693 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-27 03:51:55,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-27 03:51:55,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-27 03:51:55,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-27 03:51:55,700 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,729 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,744 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 74 [2023-08-27 03:51:55,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-27 03:51:55,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-27 03:51:55,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-27 03:51:55,746 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-27 03:51:55,753 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,764 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,764 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,769 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,770 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,772 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,782 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,784 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-27 03:51:55,785 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-27 03:51:55,785 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-27 03:51:55,785 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-27 03:51:55,786 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (1/1) ... [2023-08-27 03:51:55,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-27 03:51:55,808 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-27 03:51:55,822 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-27 03:51:55,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-27 03:51:55,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-27 03:51:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-27 03:51:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-27 03:51:55,870 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-27 03:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-27 03:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-27 03:51:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-27 03:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-27 03:51:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-27 03:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-27 03:51:55,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-27 03:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-27 03:51:55,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-27 03:51:55,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-27 03:51:55,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-27 03:51:55,874 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-27 03:51:56,029 INFO L236 CfgBuilder]: Building ICFG [2023-08-27 03:51:56,030 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-27 03:51:56,163 INFO L277 CfgBuilder]: Performing block encoding [2023-08-27 03:51:56,186 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-27 03:51:56,187 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-08-27 03:51:56,189 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:51:56 BoogieIcfgContainer [2023-08-27 03:51:56,189 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-27 03:51:56,191 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-27 03:51:56,191 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-27 03:51:56,194 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-27 03:51:56,194 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 03:51:55" (1/3) ... [2023-08-27 03:51:56,194 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6b8c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:51:56, skipping insertion in model container [2023-08-27 03:51:56,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:51:55" (2/3) ... [2023-08-27 03:51:56,195 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b6b8c90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 03:51:56, skipping insertion in model container [2023-08-27 03:51:56,195 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:51:56" (3/3) ... [2023-08-27 03:51:56,196 INFO L112 eAbstractionObserver]: Analyzing ICFG safe000_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-08-27 03:51:56,211 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-27 03:51:56,211 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-08-27 03:51:56,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-27 03:51:56,283 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-27 03:51:56,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 03:51:56,372 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 03:51:56,372 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:51:56,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:51:56,385 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 95 transitions, 205 flow [2023-08-27 03:51:56,389 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 99 places, 92 transitions, 193 flow [2023-08-27 03:51:56,392 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-27 03:51:56,404 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 03:51:56,410 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 99 places, 92 transitions, 193 flow [2023-08-27 03:51:56,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 99 places, 92 transitions, 193 flow [2023-08-27 03:51:56,438 INFO L124 PetriNetUnfolderBase]: 3/92 cut-off events. [2023-08-27 03:51:56,438 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:51:56,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 92 events. 3/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2023-08-27 03:51:56,440 INFO L119 LiptonReduction]: Number of co-enabled transitions 2256 [2023-08-27 03:51:58,754 INFO L134 LiptonReduction]: Checked pairs total: 6787 [2023-08-27 03:51:58,754 INFO L136 LiptonReduction]: Total number of compositions: 84 [2023-08-27 03:51:58,766 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-27 03:51:58,771 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;@f2a6204, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-27 03:51:58,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2023-08-27 03:51:58,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-27 03:51:58,774 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-27 03:51:58,775 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-27 03:51:58,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:51:58,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-27 03:51:58,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:51:58,780 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:51:58,780 INFO L85 PathProgramCache]: Analyzing trace with hash 336258923, now seen corresponding path program 1 times [2023-08-27 03:51:58,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:51:58,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291306882] [2023-08-27 03:51:58,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:51:58,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:51:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:51:59,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:51:59,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:51:59,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291306882] [2023-08-27 03:51:59,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291306882] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:51:59,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:51:59,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:51:59,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021365814] [2023-08-27 03:51:59,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:51:59,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:51:59,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:51:59,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:51:59,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:51:59,063 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:51:59,066 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,066 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:51:59,066 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:51:59,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:51:59,268 INFO L124 PetriNetUnfolderBase]: 496/814 cut-off events. [2023-08-27 03:51:59,269 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-27 03:51:59,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1658 conditions, 814 events. 496/814 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 3702 event pairs, 127 based on Foata normal form. 0/514 useless extension candidates. Maximal degree in co-relation 1647. Up to 710 conditions per place. [2023-08-27 03:51:59,282 INFO L140 encePairwiseOnDemand]: 168/179 looper letters, 30 selfloop transitions, 4 changer transitions 0/37 dead transitions. [2023-08-27 03:51:59,282 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 37 transitions, 157 flow [2023-08-27 03:51:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:51:59,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:51:59,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 273 transitions. [2023-08-27 03:51:59,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5083798882681564 [2023-08-27 03:51:59,296 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 273 transitions. [2023-08-27 03:51:59,297 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 273 transitions. [2023-08-27 03:51:59,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:51:59,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 273 transitions. [2023-08-27 03:51:59,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.0) internal successors, (273), 3 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,306 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,306 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,308 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 59 flow. Second operand 3 states and 273 transitions. [2023-08-27 03:51:59,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 37 transitions, 157 flow [2023-08-27 03:51:59,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 37 transitions, 152 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:51:59,311 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 90 flow [2023-08-27 03:51:59,313 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2023-08-27 03:51:59,316 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-08-27 03:51:59,316 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 90 flow [2023-08-27 03:51:59,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:51:59,316 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:51:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-27 03:51:59,317 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:51:59,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:51:59,317 INFO L85 PathProgramCache]: Analyzing trace with hash -1724779416, now seen corresponding path program 1 times [2023-08-27 03:51:59,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:51:59,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508238944] [2023-08-27 03:51:59,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:51:59,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:51:59,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:51:59,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:51:59,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:51:59,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508238944] [2023-08-27 03:51:59,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508238944] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:51:59,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:51:59,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-27 03:51:59,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868888016] [2023-08-27 03:51:59,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:51:59,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-27 03:51:59,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:51:59,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-27 03:51:59,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-27 03:51:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:51:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:51:59,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:51:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:51:59,731 INFO L124 PetriNetUnfolderBase]: 945/1658 cut-off events. [2023-08-27 03:51:59,731 INFO L125 PetriNetUnfolderBase]: For 234/257 co-relation queries the response was YES. [2023-08-27 03:51:59,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4135 conditions, 1658 events. 945/1658 cut-off events. For 234/257 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 10201 event pairs, 352 based on Foata normal form. 5/1338 useless extension candidates. Maximal degree in co-relation 4124. Up to 818 conditions per place. [2023-08-27 03:51:59,742 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 36 selfloop transitions, 7 changer transitions 0/47 dead transitions. [2023-08-27 03:51:59,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 47 transitions, 241 flow [2023-08-27 03:51:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-27 03:51:59,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-27 03:51:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 254 transitions. [2023-08-27 03:51:59,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4729981378026071 [2023-08-27 03:51:59,745 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 254 transitions. [2023-08-27 03:51:59,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 254 transitions. [2023-08-27 03:51:59,745 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:51:59,746 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 254 transitions. [2023-08-27 03:51:59,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 84.66666666666667) internal successors, (254), 3 states have internal predecessors, (254), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,748 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,748 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,748 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 90 flow. Second operand 3 states and 254 transitions. [2023-08-27 03:51:59,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 47 transitions, 241 flow [2023-08-27 03:51:59,749 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 47 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:51:59,750 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 140 flow [2023-08-27 03:51:59,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-08-27 03:51:59,751 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-27 03:51:59,751 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 140 flow [2023-08-27 03:51:59,752 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.66666666666667) internal successors, (224), 3 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,752 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:51:59,752 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:51:59,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-27 03:51:59,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:51:59,753 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:51:59,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1928555294, now seen corresponding path program 1 times [2023-08-27 03:51:59,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:51:59,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237255515] [2023-08-27 03:51:59,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:51:59,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:51:59,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:51:59,861 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:51:59,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:51:59,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237255515] [2023-08-27 03:51:59,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237255515] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:51:59,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:51:59,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:51:59,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361800864] [2023-08-27 03:51:59,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:51:59,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:51:59,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:51:59,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:51:59,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:51:59,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:51:59,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:51:59,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:51:59,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:51:59,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:00,057 INFO L124 PetriNetUnfolderBase]: 893/1568 cut-off events. [2023-08-27 03:52:00,058 INFO L125 PetriNetUnfolderBase]: For 747/775 co-relation queries the response was YES. [2023-08-27 03:52:00,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4683 conditions, 1568 events. 893/1568 cut-off events. For 747/775 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 9595 event pairs, 189 based on Foata normal form. 15/1317 useless extension candidates. Maximal degree in co-relation 4669. Up to 794 conditions per place. [2023-08-27 03:52:00,070 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 46 selfloop transitions, 8 changer transitions 0/58 dead transitions. [2023-08-27 03:52:00,070 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 58 transitions, 352 flow [2023-08-27 03:52:00,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:52:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:52:00,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 330 transitions. [2023-08-27 03:52:00,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46089385474860334 [2023-08-27 03:52:00,073 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 330 transitions. [2023-08-27 03:52:00,073 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 330 transitions. [2023-08-27 03:52:00,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:00,073 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 330 transitions. [2023-08-27 03:52:00,075 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 82.5) internal successors, (330), 4 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,078 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,079 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,079 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 140 flow. Second operand 4 states and 330 transitions. [2023-08-27 03:52:00,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 58 transitions, 352 flow [2023-08-27 03:52:00,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 58 transitions, 330 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:52:00,087 INFO L231 Difference]: Finished difference. Result has 41 places, 37 transitions, 184 flow [2023-08-27 03:52:00,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=184, PETRI_PLACES=41, PETRI_TRANSITIONS=37} [2023-08-27 03:52:00,089 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 7 predicate places. [2023-08-27 03:52:00,089 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 37 transitions, 184 flow [2023-08-27 03:52:00,089 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.25) internal successors, (297), 4 states have internal predecessors, (297), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,089 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:00,090 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:00,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-27 03:52:00,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:00,094 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:00,094 INFO L85 PathProgramCache]: Analyzing trace with hash -844185456, now seen corresponding path program 1 times [2023-08-27 03:52:00,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:00,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784152973] [2023-08-27 03:52:00,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:00,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:00,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:00,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:00,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:00,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784152973] [2023-08-27 03:52:00,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784152973] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:00,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:00,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:52:00,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997009449] [2023-08-27 03:52:00,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:00,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:52:00,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:00,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:52:00,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:52:00,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:52:00,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 37 transitions, 184 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:00,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:52:00,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:00,306 INFO L124 PetriNetUnfolderBase]: 681/1151 cut-off events. [2023-08-27 03:52:00,307 INFO L125 PetriNetUnfolderBase]: For 1419/1464 co-relation queries the response was YES. [2023-08-27 03:52:00,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3810 conditions, 1151 events. 681/1151 cut-off events. For 1419/1464 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6128 event pairs, 91 based on Foata normal form. 35/979 useless extension candidates. Maximal degree in co-relation 3793. Up to 896 conditions per place. [2023-08-27 03:52:00,316 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 41 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-27 03:52:00,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 51 transitions, 352 flow [2023-08-27 03:52:00,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:52:00,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:52:00,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 342 transitions. [2023-08-27 03:52:00,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4776536312849162 [2023-08-27 03:52:00,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 342 transitions. [2023-08-27 03:52:00,319 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 342 transitions. [2023-08-27 03:52:00,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:00,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 342 transitions. [2023-08-27 03:52:00,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,322 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,322 INFO L175 Difference]: Start difference. First operand has 41 places, 37 transitions, 184 flow. Second operand 4 states and 342 transitions. [2023-08-27 03:52:00,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 51 transitions, 352 flow [2023-08-27 03:52:00,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 51 transitions, 347 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:52:00,327 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 177 flow [2023-08-27 03:52:00,327 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-08-27 03:52:00,328 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 6 predicate places. [2023-08-27 03:52:00,329 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 177 flow [2023-08-27 03:52:00,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:00,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:00,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-27 03:52:00,330 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:00,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:00,330 INFO L85 PathProgramCache]: Analyzing trace with hash -844185455, now seen corresponding path program 1 times [2023-08-27 03:52:00,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:00,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824966209] [2023-08-27 03:52:00,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:00,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:00,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:00,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:00,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824966209] [2023-08-27 03:52:00,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824966209] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:00,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:00,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:52:00,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902662763] [2023-08-27 03:52:00,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:00,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:52:00,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:00,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:52:00,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:52:00,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:52:00,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:00,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:52:00,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:00,522 INFO L124 PetriNetUnfolderBase]: 464/799 cut-off events. [2023-08-27 03:52:00,522 INFO L125 PetriNetUnfolderBase]: For 1163/1204 co-relation queries the response was YES. [2023-08-27 03:52:00,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2799 conditions, 799 events. 464/799 cut-off events. For 1163/1204 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3908 event pairs, 35 based on Foata normal form. 31/794 useless extension candidates. Maximal degree in co-relation 2781. Up to 291 conditions per place. [2023-08-27 03:52:00,530 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 54 selfloop transitions, 7 changer transitions 0/67 dead transitions. [2023-08-27 03:52:00,530 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 67 transitions, 469 flow [2023-08-27 03:52:00,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:52:00,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:52:00,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2023-08-27 03:52:00,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4930167597765363 [2023-08-27 03:52:00,532 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 353 transitions. [2023-08-27 03:52:00,532 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 353 transitions. [2023-08-27 03:52:00,532 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:00,533 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 353 transitions. [2023-08-27 03:52:00,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 88.25) internal successors, (353), 4 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,535 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,536 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 177 flow. Second operand 4 states and 353 transitions. [2023-08-27 03:52:00,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 67 transitions, 469 flow [2023-08-27 03:52:00,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 67 transitions, 464 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-27 03:52:00,540 INFO L231 Difference]: Finished difference. Result has 42 places, 37 transitions, 216 flow [2023-08-27 03:52:00,540 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=216, PETRI_PLACES=42, PETRI_TRANSITIONS=37} [2023-08-27 03:52:00,542 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 8 predicate places. [2023-08-27 03:52:00,542 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 37 transitions, 216 flow [2023-08-27 03:52:00,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.0) internal successors, (316), 4 states have internal predecessors, (316), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:00,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:00,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-27 03:52:00,543 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:00,543 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:00,544 INFO L85 PathProgramCache]: Analyzing trace with hash 342625118, now seen corresponding path program 1 times [2023-08-27 03:52:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:00,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885088258] [2023-08-27 03:52:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:00,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:00,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:00,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:00,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885088258] [2023-08-27 03:52:00,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885088258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:00,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:00,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:52:00,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161741665] [2023-08-27 03:52:00,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:00,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:52:00,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:00,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:52:00,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:52:00,640 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:52:00,641 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 37 transitions, 216 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,641 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:00,641 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:52:00,641 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:00,788 INFO L124 PetriNetUnfolderBase]: 524/886 cut-off events. [2023-08-27 03:52:00,788 INFO L125 PetriNetUnfolderBase]: For 1535/1535 co-relation queries the response was YES. [2023-08-27 03:52:00,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3576 conditions, 886 events. 524/886 cut-off events. For 1535/1535 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4283 event pairs, 95 based on Foata normal form. 9/871 useless extension candidates. Maximal degree in co-relation 3557. Up to 415 conditions per place. [2023-08-27 03:52:00,794 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 61 selfloop transitions, 12 changer transitions 0/74 dead transitions. [2023-08-27 03:52:00,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 74 transitions, 575 flow [2023-08-27 03:52:00,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:52:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:52:00,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 335 transitions. [2023-08-27 03:52:00,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46787709497206703 [2023-08-27 03:52:00,796 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 335 transitions. [2023-08-27 03:52:00,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 335 transitions. [2023-08-27 03:52:00,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:00,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 335 transitions. [2023-08-27 03:52:00,797 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,798 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,799 INFO L175 Difference]: Start difference. First operand has 42 places, 37 transitions, 216 flow. Second operand 4 states and 335 transitions. [2023-08-27 03:52:00,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 74 transitions, 575 flow [2023-08-27 03:52:00,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 74 transitions, 541 flow, removed 8 selfloop flow, removed 2 redundant places. [2023-08-27 03:52:00,803 INFO L231 Difference]: Finished difference. Result has 46 places, 45 transitions, 325 flow [2023-08-27 03:52:00,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=202, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=46, PETRI_TRANSITIONS=45} [2023-08-27 03:52:00,804 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 12 predicate places. [2023-08-27 03:52:00,804 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 45 transitions, 325 flow [2023-08-27 03:52:00,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:00,805 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:00,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-27 03:52:00,805 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:00,805 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:00,805 INFO L85 PathProgramCache]: Analyzing trace with hash 342625149, now seen corresponding path program 1 times [2023-08-27 03:52:00,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:00,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428643816] [2023-08-27 03:52:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:00,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:00,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:00,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:00,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:00,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428643816] [2023-08-27 03:52:00,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428643816] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:00,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:00,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:52:00,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928805829] [2023-08-27 03:52:00,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:00,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:52:00,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:00,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:52:00,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:52:00,902 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:52:00,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 45 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:00,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:00,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:52:00,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:01,022 INFO L124 PetriNetUnfolderBase]: 510/860 cut-off events. [2023-08-27 03:52:01,023 INFO L125 PetriNetUnfolderBase]: For 1912/1912 co-relation queries the response was YES. [2023-08-27 03:52:01,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3735 conditions, 860 events. 510/860 cut-off events. For 1912/1912 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 4071 event pairs, 71 based on Foata normal form. 4/839 useless extension candidates. Maximal degree in co-relation 3713. Up to 364 conditions per place. [2023-08-27 03:52:01,029 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 60 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2023-08-27 03:52:01,029 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 82 transitions, 741 flow [2023-08-27 03:52:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:52:01,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:52:01,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 334 transitions. [2023-08-27 03:52:01,031 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4664804469273743 [2023-08-27 03:52:01,031 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 334 transitions. [2023-08-27 03:52:01,031 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 334 transitions. [2023-08-27 03:52:01,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:01,031 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 334 transitions. [2023-08-27 03:52:01,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.5) internal successors, (334), 4 states have internal predecessors, (334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,033 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,033 INFO L175 Difference]: Start difference. First operand has 46 places, 45 transitions, 325 flow. Second operand 4 states and 334 transitions. [2023-08-27 03:52:01,034 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 82 transitions, 741 flow [2023-08-27 03:52:01,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 82 transitions, 734 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:52:01,039 INFO L231 Difference]: Finished difference. Result has 51 places, 59 transitions, 564 flow [2023-08-27 03:52:01,039 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=321, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=564, PETRI_PLACES=51, PETRI_TRANSITIONS=59} [2023-08-27 03:52:01,040 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-08-27 03:52:01,040 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 59 transitions, 564 flow [2023-08-27 03:52:01,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.5) internal successors, (298), 4 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,040 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:01,040 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:01,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-27 03:52:01,041 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:01,041 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:01,041 INFO L85 PathProgramCache]: Analyzing trace with hash -395674476, now seen corresponding path program 1 times [2023-08-27 03:52:01,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:01,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238952045] [2023-08-27 03:52:01,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:01,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:01,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:01,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:01,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238952045] [2023-08-27 03:52:01,122 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238952045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:01,122 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:01,122 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:52:01,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789492418] [2023-08-27 03:52:01,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:01,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:52:01,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:01,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:52:01,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:52:01,124 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:52:01,124 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 59 transitions, 564 flow. Second operand has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:01,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:52:01,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:01,249 INFO L124 PetriNetUnfolderBase]: 502/846 cut-off events. [2023-08-27 03:52:01,250 INFO L125 PetriNetUnfolderBase]: For 2938/2938 co-relation queries the response was YES. [2023-08-27 03:52:01,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 846 events. 502/846 cut-off events. For 2938/2938 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4066 event pairs, 55 based on Foata normal form. 4/825 useless extension candidates. Maximal degree in co-relation 4136. Up to 372 conditions per place. [2023-08-27 03:52:01,256 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 62 selfloop transitions, 32 changer transitions 0/95 dead transitions. [2023-08-27 03:52:01,256 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 95 transitions, 1023 flow [2023-08-27 03:52:01,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-27 03:52:01,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-27 03:52:01,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 332 transitions. [2023-08-27 03:52:01,258 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46368715083798884 [2023-08-27 03:52:01,258 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 332 transitions. [2023-08-27 03:52:01,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 332 transitions. [2023-08-27 03:52:01,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:01,259 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 332 transitions. [2023-08-27 03:52:01,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 83.0) internal successors, (332), 4 states have internal predecessors, (332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,261 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 179.0) internal successors, (895), 5 states have internal predecessors, (895), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,261 INFO L175 Difference]: Start difference. First operand has 51 places, 59 transitions, 564 flow. Second operand 4 states and 332 transitions. [2023-08-27 03:52:01,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 95 transitions, 1023 flow [2023-08-27 03:52:01,269 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 95 transitions, 1023 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 03:52:01,270 INFO L231 Difference]: Finished difference. Result has 57 places, 69 transitions, 852 flow [2023-08-27 03:52:01,271 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=852, PETRI_PLACES=57, PETRI_TRANSITIONS=69} [2023-08-27 03:52:01,271 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 23 predicate places. [2023-08-27 03:52:01,271 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 69 transitions, 852 flow [2023-08-27 03:52:01,272 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 74.75) internal successors, (299), 4 states have internal predecessors, (299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,272 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:01,272 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:01,272 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-27 03:52:01,272 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:01,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:01,272 INFO L85 PathProgramCache]: Analyzing trace with hash 608489047, now seen corresponding path program 1 times [2023-08-27 03:52:01,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:01,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313126718] [2023-08-27 03:52:01,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:01,273 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:01,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:01,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:01,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313126718] [2023-08-27 03:52:01,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313126718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:01,359 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:01,359 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-27 03:52:01,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145986571] [2023-08-27 03:52:01,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:01,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-27 03:52:01,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:01,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-27 03:52:01,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-27 03:52:01,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 03:52:01,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 69 transitions, 852 flow. Second operand has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:01,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 03:52:01,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:01,587 INFO L124 PetriNetUnfolderBase]: 820/1301 cut-off events. [2023-08-27 03:52:01,587 INFO L125 PetriNetUnfolderBase]: For 9334/9334 co-relation queries the response was YES. [2023-08-27 03:52:01,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7152 conditions, 1301 events. 820/1301 cut-off events. For 9334/9334 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5907 event pairs, 77 based on Foata normal form. 6/1283 useless extension candidates. Maximal degree in co-relation 7121. Up to 413 conditions per place. [2023-08-27 03:52:01,599 INFO L140 encePairwiseOnDemand]: 170/179 looper letters, 94 selfloop transitions, 55 changer transitions 0/149 dead transitions. [2023-08-27 03:52:01,599 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 149 transitions, 2016 flow [2023-08-27 03:52:01,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:52:01,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:52:01,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 414 transitions. [2023-08-27 03:52:01,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46256983240223465 [2023-08-27 03:52:01,602 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 414 transitions. [2023-08-27 03:52:01,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 414 transitions. [2023-08-27 03:52:01,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:01,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 414 transitions. [2023-08-27 03:52:01,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.8) internal successors, (414), 5 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,605 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,605 INFO L175 Difference]: Start difference. First operand has 57 places, 69 transitions, 852 flow. Second operand 5 states and 414 transitions. [2023-08-27 03:52:01,605 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 149 transitions, 2016 flow [2023-08-27 03:52:01,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 149 transitions, 2004 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-27 03:52:01,626 INFO L231 Difference]: Finished difference. Result has 64 places, 102 transitions, 1647 flow [2023-08-27 03:52:01,627 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=844, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1647, PETRI_PLACES=64, PETRI_TRANSITIONS=102} [2023-08-27 03:52:01,627 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 30 predicate places. [2023-08-27 03:52:01,628 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 102 transitions, 1647 flow [2023-08-27 03:52:01,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.0) internal successors, (292), 4 states have internal predecessors, (292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:01,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:01,628 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-27 03:52:01,629 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:01,629 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:01,629 INFO L85 PathProgramCache]: Analyzing trace with hash -218208553, now seen corresponding path program 2 times [2023-08-27 03:52:01,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:01,631 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662552533] [2023-08-27 03:52:01,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:01,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:01,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:01,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:01,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662552533] [2023-08-27 03:52:01,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1662552533] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:01,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:01,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:52:01,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714488212] [2023-08-27 03:52:01,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:01,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:52:01,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:01,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:52:01,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:52:01,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 179 [2023-08-27 03:52:01,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 102 transitions, 1647 flow. Second operand has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:01,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:01,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 179 [2023-08-27 03:52:01,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:01,997 INFO L124 PetriNetUnfolderBase]: 978/1581 cut-off events. [2023-08-27 03:52:01,997 INFO L125 PetriNetUnfolderBase]: For 17775/17775 co-relation queries the response was YES. [2023-08-27 03:52:02,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9867 conditions, 1581 events. 978/1581 cut-off events. For 17775/17775 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 7705 event pairs, 159 based on Foata normal form. 27/1566 useless extension candidates. Maximal degree in co-relation 9831. Up to 676 conditions per place. [2023-08-27 03:52:02,022 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 149 selfloop transitions, 16 changer transitions 3/168 dead transitions. [2023-08-27 03:52:02,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 168 transitions, 2615 flow [2023-08-27 03:52:02,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:52:02,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:52:02,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2023-08-27 03:52:02,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4592178770949721 [2023-08-27 03:52:02,024 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 411 transitions. [2023-08-27 03:52:02,024 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 411 transitions. [2023-08-27 03:52:02,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:02,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 411 transitions. [2023-08-27 03:52:02,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.2) internal successors, (411), 5 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,027 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,027 INFO L175 Difference]: Start difference. First operand has 64 places, 102 transitions, 1647 flow. Second operand 5 states and 411 transitions. [2023-08-27 03:52:02,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 168 transitions, 2615 flow [2023-08-27 03:52:02,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 168 transitions, 2615 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-27 03:52:02,065 INFO L231 Difference]: Finished difference. Result has 72 places, 111 transitions, 1938 flow [2023-08-27 03:52:02,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1647, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1938, PETRI_PLACES=72, PETRI_TRANSITIONS=111} [2023-08-27 03:52:02,066 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 38 predicate places. [2023-08-27 03:52:02,066 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 111 transitions, 1938 flow [2023-08-27 03:52:02,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 72.4) internal successors, (362), 5 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:02,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:02,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-27 03:52:02,067 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:02,067 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:02,067 INFO L85 PathProgramCache]: Analyzing trace with hash 2008826934, now seen corresponding path program 1 times [2023-08-27 03:52:02,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:02,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144100139] [2023-08-27 03:52:02,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:02,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:02,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:02,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:02,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:02,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144100139] [2023-08-27 03:52:02,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144100139] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:02,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:02,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:52:02,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452156510] [2023-08-27 03:52:02,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:02,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:52:02,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:02,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:52:02,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:52:02,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:52:02,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 111 transitions, 1938 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:02,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:52:02,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:02,501 INFO L124 PetriNetUnfolderBase]: 1149/1942 cut-off events. [2023-08-27 03:52:02,501 INFO L125 PetriNetUnfolderBase]: For 24812/24830 co-relation queries the response was YES. [2023-08-27 03:52:02,508 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12501 conditions, 1942 events. 1149/1942 cut-off events. For 24812/24830 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 10743 event pairs, 163 based on Foata normal form. 32/1906 useless extension candidates. Maximal degree in co-relation 12459. Up to 948 conditions per place. [2023-08-27 03:52:02,519 INFO L140 encePairwiseOnDemand]: 171/179 looper letters, 114 selfloop transitions, 45 changer transitions 6/167 dead transitions. [2023-08-27 03:52:02,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 167 transitions, 2864 flow [2023-08-27 03:52:02,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:52:02,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:52:02,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2023-08-27 03:52:02,521 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4659217877094972 [2023-08-27 03:52:02,521 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2023-08-27 03:52:02,521 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2023-08-27 03:52:02,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:02,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2023-08-27 03:52:02,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,524 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,525 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,525 INFO L175 Difference]: Start difference. First operand has 72 places, 111 transitions, 1938 flow. Second operand 5 states and 417 transitions. [2023-08-27 03:52:02,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 167 transitions, 2864 flow [2023-08-27 03:52:02,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 167 transitions, 2848 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-27 03:52:02,596 INFO L231 Difference]: Finished difference. Result has 77 places, 126 transitions, 2469 flow [2023-08-27 03:52:02,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=1923, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2469, PETRI_PLACES=77, PETRI_TRANSITIONS=126} [2023-08-27 03:52:02,597 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 43 predicate places. [2023-08-27 03:52:02,597 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 126 transitions, 2469 flow [2023-08-27 03:52:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,597 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:02,597 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-27 03:52:02,598 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONASSERT === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:02,598 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash -2035858144, now seen corresponding path program 2 times [2023-08-27 03:52:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:02,598 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [162214650] [2023-08-27 03:52:02,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:02,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:02,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:02,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:02,677 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:02,677 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [162214650] [2023-08-27 03:52:02,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [162214650] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:02,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:02,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:52:02,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305627264] [2023-08-27 03:52:02,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:02,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:52:02,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:02,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:52:02,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:52:02,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 179 [2023-08-27 03:52:02,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 126 transitions, 2469 flow. Second operand has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:02,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:02,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 179 [2023-08-27 03:52:02,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:02,996 INFO L124 PetriNetUnfolderBase]: 1388/2380 cut-off events. [2023-08-27 03:52:02,996 INFO L125 PetriNetUnfolderBase]: For 38760/38786 co-relation queries the response was YES. [2023-08-27 03:52:03,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15844 conditions, 2380 events. 1388/2380 cut-off events. For 38760/38786 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 14311 event pairs, 204 based on Foata normal form. 29/2308 useless extension candidates. Maximal degree in co-relation 15799. Up to 1461 conditions per place. [2023-08-27 03:52:03,020 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 126 selfloop transitions, 38 changer transitions 9/175 dead transitions. [2023-08-27 03:52:03,020 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 175 transitions, 3361 flow [2023-08-27 03:52:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:52:03,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:52:03,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 410 transitions. [2023-08-27 03:52:03,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581005586592179 [2023-08-27 03:52:03,022 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 410 transitions. [2023-08-27 03:52:03,022 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 410 transitions. [2023-08-27 03:52:03,023 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:03,023 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 410 transitions. [2023-08-27 03:52:03,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 82.0) internal successors, (410), 5 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,025 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,025 INFO L175 Difference]: Start difference. First operand has 77 places, 126 transitions, 2469 flow. Second operand 5 states and 410 transitions. [2023-08-27 03:52:03,025 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 175 transitions, 3361 flow [2023-08-27 03:52:03,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 175 transitions, 3300 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-27 03:52:03,145 INFO L231 Difference]: Finished difference. Result has 78 places, 136 transitions, 2890 flow [2023-08-27 03:52:03,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2392, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2890, PETRI_PLACES=78, PETRI_TRANSITIONS=136} [2023-08-27 03:52:03,146 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 44 predicate places. [2023-08-27 03:52:03,146 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 136 transitions, 2890 flow [2023-08-27 03:52:03,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.4) internal successors, (372), 5 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-27 03:52:03,146 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-27 03:52:03,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW === [P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW, P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (and 12 more)] === [2023-08-27 03:52:03,147 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-27 03:52:03,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1051649441, now seen corresponding path program 1 times [2023-08-27 03:52:03,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-27 03:52:03,147 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679121885] [2023-08-27 03:52:03,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-27 03:52:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-27 03:52:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-27 03:52:03,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-27 03:52:03,187 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-27 03:52:03,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679121885] [2023-08-27 03:52:03,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679121885] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-27 03:52:03,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-27 03:52:03,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-27 03:52:03,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845641644] [2023-08-27 03:52:03,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-27 03:52:03,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-27 03:52:03,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-27 03:52:03,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-27 03:52:03,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-27 03:52:03,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 179 [2023-08-27 03:52:03,190 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 136 transitions, 2890 flow. Second operand has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-27 03:52:03,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 179 [2023-08-27 03:52:03,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-27 03:52:03,449 INFO L124 PetriNetUnfolderBase]: 936/1701 cut-off events. [2023-08-27 03:52:03,449 INFO L125 PetriNetUnfolderBase]: For 30480/31154 co-relation queries the response was YES. [2023-08-27 03:52:03,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10935 conditions, 1701 events. 936/1701 cut-off events. For 30480/31154 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 11246 event pairs, 66 based on Foata normal form. 560/2219 useless extension candidates. Maximal degree in co-relation 10890. Up to 640 conditions per place. [2023-08-27 03:52:03,458 INFO L140 encePairwiseOnDemand]: 172/179 looper letters, 0 selfloop transitions, 0 changer transitions 223/223 dead transitions. [2023-08-27 03:52:03,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 223 transitions, 5250 flow [2023-08-27 03:52:03,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-27 03:52:03,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-27 03:52:03,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-08-27 03:52:03,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47039106145251397 [2023-08-27 03:52:03,460 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-08-27 03:52:03,460 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-08-27 03:52:03,460 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-27 03:52:03,460 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-08-27 03:52:03,461 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,463 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,463 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 179.0) internal successors, (1074), 6 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,463 INFO L175 Difference]: Start difference. First operand has 78 places, 136 transitions, 2890 flow. Second operand 5 states and 421 transitions. [2023-08-27 03:52:03,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 223 transitions, 5250 flow [2023-08-27 03:52:03,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 223 transitions, 5218 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-27 03:52:03,526 INFO L231 Difference]: Finished difference. Result has 76 places, 0 transitions, 0 flow [2023-08-27 03:52:03,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=179, PETRI_DIFFERENCE_MINUEND_FLOW=2840, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=76, PETRI_TRANSITIONS=0} [2023-08-27 03:52:03,526 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 42 predicate places. [2023-08-27 03:52:03,526 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 0 transitions, 0 flow [2023-08-27 03:52:03,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.4) internal successors, (397), 5 states have internal predecessors, (397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (15 of 16 remaining) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (14 of 16 remaining) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (13 of 16 remaining) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (12 of 16 remaining) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (11 of 16 remaining) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (10 of 16 remaining) [2023-08-27 03:52:03,529 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONASSERT (9 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (8 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (7 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (5 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (4 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (3 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (2 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONINTEGER_OVERFLOW (1 of 16 remaining) [2023-08-27 03:52:03,530 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err1ASSERT_VIOLATIONINTEGER_OVERFLOW (0 of 16 remaining) [2023-08-27 03:52:03,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-27 03:52:03,531 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-27 03:52:03,535 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-27 03:52:03,535 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-27 03:52:03,537 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 03:52:03 BasicIcfg [2023-08-27 03:52:03,537 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-27 03:52:03,538 INFO L158 Benchmark]: Toolchain (without parser) took 8332.24ms. Allocated memory was 375.4MB in the beginning and 541.1MB in the end (delta: 165.7MB). Free memory was 350.4MB in the beginning and 392.7MB in the end (delta: -42.3MB). Peak memory consumption was 317.6MB. Max. memory is 16.0GB. [2023-08-27 03:52:03,538 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 375.4MB. Free memory is still 351.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-27 03:52:03,538 INFO L158 Benchmark]: CACSL2BoogieTranslator took 487.33ms. Allocated memory is still 375.4MB. Free memory was 350.4MB in the beginning and 330.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-27 03:52:03,538 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.27ms. Allocated memory is still 375.4MB. Free memory was 330.2MB in the beginning and 328.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:52:03,539 INFO L158 Benchmark]: Boogie Preprocessor took 39.27ms. Allocated memory is still 375.4MB. Free memory was 328.1MB in the beginning and 326.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-27 03:52:03,539 INFO L158 Benchmark]: RCFGBuilder took 403.87ms. Allocated memory is still 375.4MB. Free memory was 326.4MB in the beginning and 310.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-27 03:52:03,539 INFO L158 Benchmark]: TraceAbstraction took 7346.48ms. Allocated memory was 375.4MB in the beginning and 541.1MB in the end (delta: 165.7MB). Free memory was 310.1MB in the beginning and 392.7MB in the end (delta: -82.6MB). Peak memory consumption was 277.8MB. Max. memory is 16.0GB. [2023-08-27 03:52:03,540 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 375.4MB. Free memory is still 351.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 487.33ms. Allocated memory is still 375.4MB. Free memory was 350.4MB in the beginning and 330.2MB in the end (delta: 20.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.27ms. Allocated memory is still 375.4MB. Free memory was 330.2MB in the beginning and 328.1MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.27ms. Allocated memory is still 375.4MB. Free memory was 328.1MB in the beginning and 326.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 403.87ms. Allocated memory is still 375.4MB. Free memory was 326.4MB in the beginning and 310.6MB in the end (delta: 15.9MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 7346.48ms. Allocated memory was 375.4MB in the beginning and 541.1MB in the end (delta: 165.7MB). Free memory was 310.1MB in the beginning and 392.7MB in the end (delta: -82.6MB). Peak memory consumption was 277.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 99 PlacesBefore, 34 PlacesAfterwards, 92 TransitionsBefore, 25 TransitionsAfterwards, 2256 CoEnabledTransitionPairs, 7 FixpointIterations, 20 TrivialSequentialCompositions, 52 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 84 TotalNumberOfCompositions, 6787 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3104, independent: 2892, independent conditional: 0, independent unconditional: 2892, dependent: 212, dependent conditional: 0, dependent unconditional: 212, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1267, independent: 1216, independent conditional: 0, independent unconditional: 1216, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3104, independent: 1676, independent conditional: 0, independent unconditional: 1676, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 1267, unknown conditional: 0, unknown unconditional: 1267] , Statistics on independence cache: Total cache size (in pairs): 110, Positive cache size: 93, Positive conditional cache size: 0, Positive unconditional cache size: 93, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 733]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 748]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 763]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 17]: assertion always holds For all program executions holds that assertion always holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 123 locations, 16 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 7.2s, OverallIterations: 13, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 3.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 279 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 279 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 21 mSDsCounter, 62 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 694 IncrementalHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 62 mSolverCounterUnsat, 26 mSDtfsCounter, 694 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 32 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2890occurred in iteration=12, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 125 ConstructedInterpolants, 0 QuantifiedInterpolants, 585 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 13 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-27 03:52:03,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...