/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:31:55,700 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:31:55,769 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:31:55,777 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:31:55,777 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:31:55,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:31:55,778 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:31:55,809 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:31:55,809 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:31:55,810 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:31:55,810 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:31:55,810 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:31:55,811 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:31:55,811 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:31:55,812 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:31:55,812 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:31:55,812 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:31:55,818 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:31:55,819 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:31:55,819 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:31:55,822 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:31:55,822 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:31:55,822 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:31:55,823 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:31:55,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:31:55,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:31:55,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:31:55,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:31:55,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:31:55,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:31:55,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:31:55,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:31:55,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:31:55,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:31:55,826 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:31:55,827 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:31:56,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:31:56,092 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:31:56,095 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:31:56,096 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:31:56,096 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:31:56,097 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i [2023-08-04 04:31:57,217 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:31:57,444 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:31:57,444 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i [2023-08-04 04:31:57,469 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d8c6a5cc/324166ffb3b44bd69897d71323cab571/FLAG77def7792 [2023-08-04 04:31:57,481 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7d8c6a5cc/324166ffb3b44bd69897d71323cab571 [2023-08-04 04:31:57,484 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:31:57,487 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:31:57,488 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:31:57,488 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:31:57,491 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:31:57,491 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,492 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79bcc22b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57, skipping insertion in model container [2023-08-04 04:31:57,493 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,543 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:31:57,678 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i[1096,1109] [2023-08-04 04:31:57,780 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:31:57,790 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:31:57,800 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i[1096,1109] [2023-08-04 04:31:57,808 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:31:57,810 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:31:57,828 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:31:57,856 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:31:57,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57 WrapperNode [2023-08-04 04:31:57,856 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:31:57,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:31:57,858 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:31:57,858 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:31:57,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,874 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,892 INFO L138 Inliner]: procedures = 162, calls = 46, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 106 [2023-08-04 04:31:57,893 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:31:57,893 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:31:57,893 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:31:57,893 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:31:57,900 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,900 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,903 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,903 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,916 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,919 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,921 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:31:57,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:31:57,933 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:31:57,934 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:31:57,934 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (1/1) ... [2023-08-04 04:31:57,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:31:57,949 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:31:57,973 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) [2023-08-04 04:31:57,985 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 [2023-08-04 04:31:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:31:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:31:58,021 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:31:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:31:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:31:58,022 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:31:58,022 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:31:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:31:58,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:31:58,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:31:58,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:31:58,025 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:31:58,159 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:31:58,161 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:31:58,334 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:31:58,341 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:31:58,342 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:31:58,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:31:58 BoogieIcfgContainer [2023-08-04 04:31:58,344 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:31:58,345 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:31:58,346 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:31:58,348 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:31:58,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:31:57" (1/3) ... [2023-08-04 04:31:58,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc8cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:31:58, skipping insertion in model container [2023-08-04 04:31:58,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:31:57" (2/3) ... [2023-08-04 04:31:58,349 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bc8cf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:31:58, skipping insertion in model container [2023-08-04 04:31:58,349 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:31:58" (3/3) ... [2023-08-04 04:31:58,350 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_24-multiple-protecting_true_bound2.i [2023-08-04 04:31:58,357 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:31:58,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:31:58,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-04 04:31:58,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:31:58,435 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:31:58,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 145 transitions, 298 flow [2023-08-04 04:31:58,546 INFO L124 PetriNetUnfolderBase]: 13/211 cut-off events. [2023-08-04 04:31:58,546 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:31:58,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 13/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 405 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-08-04 04:31:58,552 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 298 flow [2023-08-04 04:31:58,564 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 123 places, 124 transitions, 251 flow [2023-08-04 04:31:58,568 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:31:58,597 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 123 places, 124 transitions, 251 flow [2023-08-04 04:31:58,600 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 123 places, 124 transitions, 251 flow [2023-08-04 04:31:58,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 123 places, 124 transitions, 251 flow [2023-08-04 04:31:58,649 INFO L124 PetriNetUnfolderBase]: 8/175 cut-off events. [2023-08-04 04:31:58,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:31:58,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 175 events. 8/175 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 326 event pairs, 0 based on Foata normal form. 0/159 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-04 04:31:58,652 INFO L119 LiptonReduction]: Number of co-enabled transitions 3696 [2023-08-04 04:32:01,575 INFO L134 LiptonReduction]: Checked pairs total: 10748 [2023-08-04 04:32:01,575 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-04 04:32:01,588 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:32:01,594 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=true, 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;@679c02cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:01,594 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:32:01,597 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:01,597 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-04 04:32:01,598 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:01,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:01,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:32:01,599 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:01,603 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:01,603 INFO L85 PathProgramCache]: Analyzing trace with hash 15010924, now seen corresponding path program 1 times [2023-08-04 04:32:01,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:01,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226170103] [2023-08-04 04:32:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:01,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:01,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:01,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:01,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226170103] [2023-08-04 04:32:01,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226170103] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:01,855 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:01,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:01,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061832687] [2023-08-04 04:32:01,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:01,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:01,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:01,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:01,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:01,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 241 [2023-08-04 04:32:01,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 89 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:01,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:01,900 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 241 [2023-08-04 04:32:01,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:02,009 INFO L124 PetriNetUnfolderBase]: 228/520 cut-off events. [2023-08-04 04:32:02,009 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:02,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1015 conditions, 520 events. 228/520 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2591 event pairs, 0 based on Foata normal form. 26/466 useless extension candidates. Maximal degree in co-relation 1004. Up to 476 conditions per place. [2023-08-04 04:32:02,014 INFO L140 encePairwiseOnDemand]: 235/241 looper letters, 41 selfloop transitions, 2 changer transitions 3/52 dead transitions. [2023-08-04 04:32:02,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 52 transitions, 199 flow [2023-08-04 04:32:02,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:02,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:02,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-04 04:32:02,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044260027662517 [2023-08-04 04:32:02,029 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-04 04:32:02,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-04 04:32:02,031 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:02,033 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-04 04:32:02,037 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,042 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,042 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,044 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 89 flow. Second operand 3 states and 437 transitions. [2023-08-04 04:32:02,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 52 transitions, 199 flow [2023-08-04 04:32:02,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 52 transitions, 199 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:02,048 INFO L231 Difference]: Finished difference. Result has 45 places, 37 transitions, 85 flow [2023-08-04 04:32:02,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=45, PETRI_TRANSITIONS=37} [2023-08-04 04:32:02,053 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 2 predicate places. [2023-08-04 04:32:02,053 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 37 transitions, 85 flow [2023-08-04 04:32:02,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:02,054 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:02,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:32:02,055 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:02,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:02,055 INFO L85 PathProgramCache]: Analyzing trace with hash 1488417134, now seen corresponding path program 1 times [2023-08-04 04:32:02,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:02,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507698682] [2023-08-04 04:32:02,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:02,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:02,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:02,155 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:02,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507698682] [2023-08-04 04:32:02,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507698682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:02,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756939960] [2023-08-04 04:32:02,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:02,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:02,157 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:02,165 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:02,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:32:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:02,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:32:02,273 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:02,320 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:02,320 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:02,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:02,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756939960] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:02,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:02,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:32:02,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304459223] [2023-08-04 04:32:02,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:02,336 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:02,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:02,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:02,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:02,352 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 241 [2023-08-04 04:32:02,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 37 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,354 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:02,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 241 [2023-08-04 04:32:02,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:02,396 INFO L124 PetriNetUnfolderBase]: 24/69 cut-off events. [2023-08-04 04:32:02,396 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 04:32:02,397 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168 conditions, 69 events. 24/69 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 127 event pairs, 0 based on Foata normal form. 13/81 useless extension candidates. Maximal degree in co-relation 154. Up to 50 conditions per place. [2023-08-04 04:32:02,398 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2023-08-04 04:32:02,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 33 transitions, 133 flow [2023-08-04 04:32:02,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:02,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 542 transitions. [2023-08-04 04:32:02,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622406639004149 [2023-08-04 04:32:02,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 542 transitions. [2023-08-04 04:32:02,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 542 transitions. [2023-08-04 04:32:02,409 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:02,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 542 transitions. [2023-08-04 04:32:02,411 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.5) internal successors, (542), 4 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,414 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,415 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,415 INFO L175 Difference]: Start difference. First operand has 45 places, 37 transitions, 85 flow. Second operand 4 states and 542 transitions. [2023-08-04 04:32:02,415 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 33 transitions, 133 flow [2023-08-04 04:32:02,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 33 transitions, 127 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:32:02,416 INFO L231 Difference]: Finished difference. Result has 26 places, 0 transitions, 0 flow [2023-08-04 04:32:02,416 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=43, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=26, PETRI_TRANSITIONS=0} [2023-08-04 04:32:02,417 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, -17 predicate places. [2023-08-04 04:32:02,417 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 0 transitions, 0 flow [2023-08-04 04:32:02,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.2) internal successors, (651), 5 states have internal predecessors, (651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:02,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:32:02,420 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:32:02,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:32:02,421 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:32:02,429 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:02,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:02,630 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 04:32:02,632 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:32:02,636 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 141 places, 145 transitions, 298 flow [2023-08-04 04:32:02,655 INFO L124 PetriNetUnfolderBase]: 13/211 cut-off events. [2023-08-04 04:32:02,655 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:02,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 217 conditions, 211 events. 13/211 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 405 event pairs, 0 based on Foata normal form. 0/187 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-08-04 04:32:02,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 141 places, 145 transitions, 298 flow [2023-08-04 04:32:02,657 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 78 transitions, 161 flow [2023-08-04 04:32:02,657 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:02,657 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 81 places, 78 transitions, 161 flow [2023-08-04 04:32:02,657 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 81 places, 78 transitions, 161 flow [2023-08-04 04:32:02,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 81 places, 78 transitions, 161 flow [2023-08-04 04:32:02,664 INFO L124 PetriNetUnfolderBase]: 0/82 cut-off events. [2023-08-04 04:32:02,664 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:02,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87 conditions, 82 events. 0/82 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/82 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2023-08-04 04:32:02,665 INFO L119 LiptonReduction]: Number of co-enabled transitions 660 [2023-08-04 04:32:05,798 INFO L134 LiptonReduction]: Checked pairs total: 500 [2023-08-04 04:32:05,798 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-04 04:32:05,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:05,801 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=true, 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;@679c02cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:05,801 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:05,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:05,803 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:32:05,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:05,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:05,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:32:05,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:05,804 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:05,804 INFO L85 PathProgramCache]: Analyzing trace with hash 17226348, now seen corresponding path program 1 times [2023-08-04 04:32:05,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:05,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639792912] [2023-08-04 04:32:05,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:05,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:32:05,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:32:05,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:32:05,868 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:32:05,868 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:32:05,868 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:05,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 04:32:05,869 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:05,869 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:32:05,870 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:32:05,870 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:32:05,890 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:32:05,892 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 180 transitions, 378 flow [2023-08-04 04:32:05,925 INFO L124 PetriNetUnfolderBase]: 22/336 cut-off events. [2023-08-04 04:32:05,926 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:05,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 336 events. 22/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 999 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2023-08-04 04:32:05,927 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 180 transitions, 378 flow [2023-08-04 04:32:05,929 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 158 transitions, 324 flow [2023-08-04 04:32:05,929 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:05,929 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 158 transitions, 324 flow [2023-08-04 04:32:05,929 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 158 transitions, 324 flow [2023-08-04 04:32:05,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 158 transitions, 324 flow [2023-08-04 04:32:05,954 INFO L124 PetriNetUnfolderBase]: 12/265 cut-off events. [2023-08-04 04:32:05,955 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:32:05,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 273 conditions, 265 events. 12/265 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 773 event pairs, 0 based on Foata normal form. 0/241 useless extension candidates. Maximal degree in co-relation 177. Up to 6 conditions per place. [2023-08-04 04:32:05,961 INFO L119 LiptonReduction]: Number of co-enabled transitions 9636 [2023-08-04 04:32:08,525 INFO L134 LiptonReduction]: Checked pairs total: 38559 [2023-08-04 04:32:08,525 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-04 04:32:08,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:32:08,528 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=true, 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;@679c02cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:08,528 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:32:08,530 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:08,530 INFO L124 PetriNetUnfolderBase]: 1/8 cut-off events. [2023-08-04 04:32:08,530 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:32:08,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:08,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:32:08,530 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:08,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:08,531 INFO L85 PathProgramCache]: Analyzing trace with hash 27202352, now seen corresponding path program 1 times [2023-08-04 04:32:08,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:08,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721205610] [2023-08-04 04:32:08,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:08,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:08,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:08,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:08,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1721205610] [2023-08-04 04:32:08,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1721205610] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:08,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:08,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:32:08,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945629030] [2023-08-04 04:32:08,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:08,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:08,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:08,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:08,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:08,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 285 [2023-08-04 04:32:08,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 67 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:08,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:08,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 285 [2023-08-04 04:32:08,606 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:09,504 INFO L124 PetriNetUnfolderBase]: 5526/10542 cut-off events. [2023-08-04 04:32:09,504 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 04:32:09,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19326 conditions, 10542 events. 5526/10542 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 287. Compared 81438 event pairs, 2574 based on Foata normal form. 169/9775 useless extension candidates. Maximal degree in co-relation 1444. Up to 8725 conditions per place. [2023-08-04 04:32:09,570 INFO L140 encePairwiseOnDemand]: 280/285 looper letters, 55 selfloop transitions, 2 changer transitions 1/78 dead transitions. [2023-08-04 04:32:09,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 78 transitions, 280 flow [2023-08-04 04:32:09,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:09,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:09,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 547 transitions. [2023-08-04 04:32:09,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.639766081871345 [2023-08-04 04:32:09,573 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 547 transitions. [2023-08-04 04:32:09,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 547 transitions. [2023-08-04 04:32:09,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:09,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 547 transitions. [2023-08-04 04:32:09,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 182.33333333333334) internal successors, (547), 3 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:09,580 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:09,580 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:09,580 INFO L175 Difference]: Start difference. First operand has 70 places, 67 transitions, 142 flow. Second operand 3 states and 547 transitions. [2023-08-04 04:32:09,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 78 transitions, 280 flow [2023-08-04 04:32:09,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 78 transitions, 280 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:09,583 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 146 flow [2023-08-04 04:32:09,584 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-08-04 04:32:09,585 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 2 predicate places. [2023-08-04 04:32:09,585 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 146 flow [2023-08-04 04:32:09,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:09,586 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:09,586 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:09,586 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:32:09,588 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:09,589 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash -781452503, now seen corresponding path program 1 times [2023-08-04 04:32:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:09,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416608124] [2023-08-04 04:32:09,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:09,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:09,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:09,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:09,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416608124] [2023-08-04 04:32:09,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416608124] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:09,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099349855] [2023-08-04 04:32:09,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:09,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:09,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:09,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:09,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:32:09,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:09,732 INFO L262 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:32:09,733 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:09,745 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:09,745 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:09,760 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:09,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099349855] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:09,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:09,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:32:09,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137023718] [2023-08-04 04:32:09,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:09,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:09,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:09,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:09,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:09,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-04 04:32:09,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:09,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:09,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-04 04:32:09,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:10,532 INFO L124 PetriNetUnfolderBase]: 5047/9192 cut-off events. [2023-08-04 04:32:10,533 INFO L125 PetriNetUnfolderBase]: For 299/299 co-relation queries the response was YES. [2023-08-04 04:32:10,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17474 conditions, 9192 events. 5047/9192 cut-off events. For 299/299 co-relation queries the response was YES. Maximal size of possible extension queue 269. Compared 66994 event pairs, 1781 based on Foata normal form. 13/8659 useless extension candidates. Maximal degree in co-relation 1372. Up to 7089 conditions per place. [2023-08-04 04:32:10,601 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 77 selfloop transitions, 3 changer transitions 1/101 dead transitions. [2023-08-04 04:32:10,601 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 101 transitions, 382 flow [2023-08-04 04:32:10,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:10,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:10,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 726 transitions. [2023-08-04 04:32:10,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6368421052631579 [2023-08-04 04:32:10,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 726 transitions. [2023-08-04 04:32:10,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 726 transitions. [2023-08-04 04:32:10,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:10,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 726 transitions. [2023-08-04 04:32:10,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 181.5) internal successors, (726), 4 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:10,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:10,611 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:10,611 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 146 flow. Second operand 4 states and 726 transitions. [2023-08-04 04:32:10,611 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 101 transitions, 382 flow [2023-08-04 04:32:10,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 101 transitions, 380 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:10,615 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 158 flow [2023-08-04 04:32:10,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-08-04 04:32:10,617 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 5 predicate places. [2023-08-04 04:32:10,617 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 158 flow [2023-08-04 04:32:10,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:10,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:10,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:10,625 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:10,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:10,822 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:10,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:10,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1579739327, now seen corresponding path program 1 times [2023-08-04 04:32:10,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:10,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160927800] [2023-08-04 04:32:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:10,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:10,922 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:10,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:10,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160927800] [2023-08-04 04:32:10,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160927800] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:10,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:10,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:32:10,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350508206] [2023-08-04 04:32:10,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:10,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:10,924 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:10,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:10,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:10,944 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-04 04:32:10,945 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:10,945 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:10,945 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-04 04:32:10,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:12,050 INFO L124 PetriNetUnfolderBase]: 8475/15425 cut-off events. [2023-08-04 04:32:12,050 INFO L125 PetriNetUnfolderBase]: For 1763/1763 co-relation queries the response was YES. [2023-08-04 04:32:12,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29709 conditions, 15425 events. 8475/15425 cut-off events. For 1763/1763 co-relation queries the response was YES. Maximal size of possible extension queue 434. Compared 121793 event pairs, 2835 based on Foata normal form. 182/14796 useless extension candidates. Maximal degree in co-relation 23512. Up to 8500 conditions per place. [2023-08-04 04:32:12,137 INFO L140 encePairwiseOnDemand]: 276/285 looper letters, 81 selfloop transitions, 6 changer transitions 0/105 dead transitions. [2023-08-04 04:32:12,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 105 transitions, 436 flow [2023-08-04 04:32:12,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:12,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:12,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 571 transitions. [2023-08-04 04:32:12,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6678362573099416 [2023-08-04 04:32:12,140 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 571 transitions. [2023-08-04 04:32:12,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 571 transitions. [2023-08-04 04:32:12,140 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:12,140 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 571 transitions. [2023-08-04 04:32:12,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.33333333333334) internal successors, (571), 3 states have internal predecessors, (571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:12,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:12,144 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:12,144 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 158 flow. Second operand 3 states and 571 transitions. [2023-08-04 04:32:12,144 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 105 transitions, 436 flow [2023-08-04 04:32:12,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 105 transitions, 424 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 04:32:12,149 INFO L231 Difference]: Finished difference. Result has 76 places, 69 transitions, 201 flow [2023-08-04 04:32:12,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=201, PETRI_PLACES=76, PETRI_TRANSITIONS=69} [2023-08-04 04:32:12,151 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 6 predicate places. [2023-08-04 04:32:12,151 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 69 transitions, 201 flow [2023-08-04 04:32:12,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 163.66666666666666) internal successors, (491), 3 states have internal predecessors, (491), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:12,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:12,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:12,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:32:12,154 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:12,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:12,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1074255613, now seen corresponding path program 1 times [2023-08-04 04:32:12,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:12,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498329337] [2023-08-04 04:32:12,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:12,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:12,321 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:12,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:12,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498329337] [2023-08-04 04:32:12,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498329337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:12,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:12,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:12,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230059683] [2023-08-04 04:32:12,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:12,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:32:12,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:12,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:32:12,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:32:12,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 155 out of 285 [2023-08-04 04:32:12,431 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 69 transitions, 201 flow. Second operand has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:12,431 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:12,431 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 155 of 285 [2023-08-04 04:32:12,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:13,060 INFO L124 PetriNetUnfolderBase]: 3112/6143 cut-off events. [2023-08-04 04:32:13,061 INFO L125 PetriNetUnfolderBase]: For 1470/1470 co-relation queries the response was YES. [2023-08-04 04:32:13,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12793 conditions, 6143 events. 3112/6143 cut-off events. For 1470/1470 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 45323 event pairs, 1005 based on Foata normal form. 330/6285 useless extension candidates. Maximal degree in co-relation 8609. Up to 3313 conditions per place. [2023-08-04 04:32:13,091 INFO L140 encePairwiseOnDemand]: 276/285 looper letters, 85 selfloop transitions, 9 changer transitions 0/113 dead transitions. [2023-08-04 04:32:13,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 113 transitions, 512 flow [2023-08-04 04:32:13,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:13,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:13,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 710 transitions. [2023-08-04 04:32:13,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6228070175438597 [2023-08-04 04:32:13,096 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 710 transitions. [2023-08-04 04:32:13,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 710 transitions. [2023-08-04 04:32:13,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:13,097 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 710 transitions. [2023-08-04 04:32:13,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.5) internal successors, (710), 4 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,101 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,101 INFO L175 Difference]: Start difference. First operand has 76 places, 69 transitions, 201 flow. Second operand 4 states and 710 transitions. [2023-08-04 04:32:13,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 113 transitions, 512 flow [2023-08-04 04:32:13,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 113 transitions, 494 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:13,109 INFO L231 Difference]: Finished difference. Result has 78 places, 74 transitions, 235 flow [2023-08-04 04:32:13,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=235, PETRI_PLACES=78, PETRI_TRANSITIONS=74} [2023-08-04 04:32:13,110 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 8 predicate places. [2023-08-04 04:32:13,111 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 74 transitions, 235 flow [2023-08-04 04:32:13,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 158.0) internal successors, (632), 4 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:13,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:13,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 04:32:13,111 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:13,112 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:13,112 INFO L85 PathProgramCache]: Analyzing trace with hash 90168948, now seen corresponding path program 1 times [2023-08-04 04:32:13,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:13,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101962787] [2023-08-04 04:32:13,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:13,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:13,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:13,193 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:13,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:13,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101962787] [2023-08-04 04:32:13,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101962787] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:13,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:13,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 04:32:13,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036408184] [2023-08-04 04:32:13,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:13,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:13,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:13,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:13,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:13,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 285 [2023-08-04 04:32:13,208 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 74 transitions, 235 flow. Second operand has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,208 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:13,208 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 285 [2023-08-04 04:32:13,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:13,738 INFO L124 PetriNetUnfolderBase]: 2856/6257 cut-off events. [2023-08-04 04:32:13,739 INFO L125 PetriNetUnfolderBase]: For 2098/2102 co-relation queries the response was YES. [2023-08-04 04:32:13,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13305 conditions, 6257 events. 2856/6257 cut-off events. For 2098/2102 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 48704 event pairs, 1016 based on Foata normal form. 0/6036 useless extension candidates. Maximal degree in co-relation 9104. Up to 3948 conditions per place. [2023-08-04 04:32:13,760 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 80 selfloop transitions, 3 changer transitions 0/108 dead transitions. [2023-08-04 04:32:13,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 108 transitions, 505 flow [2023-08-04 04:32:13,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:13,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:13,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-04 04:32:13,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6549707602339181 [2023-08-04 04:32:13,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-04 04:32:13,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-04 04:32:13,763 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:13,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-04 04:32:13,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,765 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,765 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,766 INFO L175 Difference]: Start difference. First operand has 78 places, 74 transitions, 235 flow. Second operand 3 states and 560 transitions. [2023-08-04 04:32:13,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 108 transitions, 505 flow [2023-08-04 04:32:13,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 108 transitions, 504 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:13,769 INFO L231 Difference]: Finished difference. Result has 80 places, 76 transitions, 253 flow [2023-08-04 04:32:13,769 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=80, PETRI_TRANSITIONS=76} [2023-08-04 04:32:13,770 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 10 predicate places. [2023-08-04 04:32:13,770 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 76 transitions, 253 flow [2023-08-04 04:32:13,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 165.66666666666666) internal successors, (497), 3 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:13,770 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:13,770 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:13,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:32:13,771 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:13,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:13,771 INFO L85 PathProgramCache]: Analyzing trace with hash 69545367, now seen corresponding path program 1 times [2023-08-04 04:32:13,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:13,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508255445] [2023-08-04 04:32:13,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:13,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:13,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:13,899 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 04:32:13,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508255445] [2023-08-04 04:32:13,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508255445] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:32:13,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [696581677] [2023-08-04 04:32:13,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:13,900 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:13,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:32:13,902 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:32:13,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:32:13,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:13,982 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-04 04:32:13,983 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:32:14,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 04:32:14,026 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:32:14,067 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 04:32:14,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [696581677] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:32:14,068 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:32:14,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2023-08-04 04:32:14,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003785103] [2023-08-04 04:32:14,068 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:32:14,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:14,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:14,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:14,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:14,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-04 04:32:14,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 76 transitions, 253 flow. Second operand has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:14,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:14,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-04 04:32:14,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:14,971 INFO L124 PetriNetUnfolderBase]: 3457/7150 cut-off events. [2023-08-04 04:32:14,971 INFO L125 PetriNetUnfolderBase]: For 2858/2859 co-relation queries the response was YES. [2023-08-04 04:32:14,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16654 conditions, 7150 events. 3457/7150 cut-off events. For 2858/2859 co-relation queries the response was YES. Maximal size of possible extension queue 249. Compared 56408 event pairs, 1345 based on Foata normal form. 81/7067 useless extension candidates. Maximal degree in co-relation 8514. Up to 2981 conditions per place. [2023-08-04 04:32:15,001 INFO L140 encePairwiseOnDemand]: 273/285 looper letters, 168 selfloop transitions, 12 changer transitions 0/200 dead transitions. [2023-08-04 04:32:15,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 200 transitions, 998 flow [2023-08-04 04:32:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:32:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:32:15,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1267 transitions. [2023-08-04 04:32:15,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6350877192982456 [2023-08-04 04:32:15,005 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1267 transitions. [2023-08-04 04:32:15,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1267 transitions. [2023-08-04 04:32:15,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:15,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1267 transitions. [2023-08-04 04:32:15,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 181.0) internal successors, (1267), 7 states have internal predecessors, (1267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,013 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,013 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,014 INFO L175 Difference]: Start difference. First operand has 80 places, 76 transitions, 253 flow. Second operand 7 states and 1267 transitions. [2023-08-04 04:32:15,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 200 transitions, 998 flow [2023-08-04 04:32:15,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 200 transitions, 989 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:15,021 INFO L231 Difference]: Finished difference. Result has 90 places, 82 transitions, 330 flow [2023-08-04 04:32:15,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=330, PETRI_PLACES=90, PETRI_TRANSITIONS=82} [2023-08-04 04:32:15,022 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 20 predicate places. [2023-08-04 04:32:15,022 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 82 transitions, 330 flow [2023-08-04 04:32:15,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.83333333333334) internal successors, (959), 6 states have internal predecessors, (959), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:15,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:15,028 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:32:15,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:32:15,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:15,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:15,229 INFO L85 PathProgramCache]: Analyzing trace with hash 849338058, now seen corresponding path program 1 times [2023-08-04 04:32:15,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:15,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347440553] [2023-08-04 04:32:15,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:15,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:15,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:15,366 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:15,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:15,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347440553] [2023-08-04 04:32:15,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347440553] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:15,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:15,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:15,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054048688] [2023-08-04 04:32:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:15,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:15,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:15,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:15,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:15,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-04 04:32:15,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 82 transitions, 330 flow. Second operand has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:15,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:15,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-04 04:32:15,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:16,267 INFO L124 PetriNetUnfolderBase]: 3833/8205 cut-off events. [2023-08-04 04:32:16,267 INFO L125 PetriNetUnfolderBase]: For 4708/4733 co-relation queries the response was YES. [2023-08-04 04:32:16,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19656 conditions, 8205 events. 3833/8205 cut-off events. For 4708/4733 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 67661 event pairs, 1745 based on Foata normal form. 111/8242 useless extension candidates. Maximal degree in co-relation 10858. Up to 3405 conditions per place. [2023-08-04 04:32:16,296 INFO L140 encePairwiseOnDemand]: 273/285 looper letters, 163 selfloop transitions, 14 changer transitions 0/197 dead transitions. [2023-08-04 04:32:16,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 197 transitions, 1037 flow [2023-08-04 04:32:16,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 04:32:16,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 04:32:16,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1262 transitions. [2023-08-04 04:32:16,304 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6325814536340852 [2023-08-04 04:32:16,304 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1262 transitions. [2023-08-04 04:32:16,304 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1262 transitions. [2023-08-04 04:32:16,305 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:16,305 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1262 transitions. [2023-08-04 04:32:16,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 180.28571428571428) internal successors, (1262), 7 states have internal predecessors, (1262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:16,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:16,312 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 285.0) internal successors, (2280), 8 states have internal predecessors, (2280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:16,312 INFO L175 Difference]: Start difference. First operand has 90 places, 82 transitions, 330 flow. Second operand 7 states and 1262 transitions. [2023-08-04 04:32:16,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 197 transitions, 1037 flow [2023-08-04 04:32:16,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 197 transitions, 1037 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:16,322 INFO L231 Difference]: Finished difference. Result has 101 places, 88 transitions, 426 flow [2023-08-04 04:32:16,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=426, PETRI_PLACES=101, PETRI_TRANSITIONS=88} [2023-08-04 04:32:16,324 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 31 predicate places. [2023-08-04 04:32:16,324 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 88 transitions, 426 flow [2023-08-04 04:32:16,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 159.66666666666666) internal successors, (958), 6 states have internal predecessors, (958), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:16,324 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:16,324 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:16,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:32:16,325 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:16,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:16,325 INFO L85 PathProgramCache]: Analyzing trace with hash -442701567, now seen corresponding path program 1 times [2023-08-04 04:32:16,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:16,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832300327] [2023-08-04 04:32:16,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:16,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:16,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832300327] [2023-08-04 04:32:16,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1832300327] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:16,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:16,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010012798] [2023-08-04 04:32:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:32:16,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:32:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:32:16,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 285 [2023-08-04 04:32:16,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 88 transitions, 426 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:16,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:16,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 285 [2023-08-04 04:32:16,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:17,426 INFO L124 PetriNetUnfolderBase]: 5278/11664 cut-off events. [2023-08-04 04:32:17,426 INFO L125 PetriNetUnfolderBase]: For 9610/9695 co-relation queries the response was YES. [2023-08-04 04:32:17,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30740 conditions, 11664 events. 5278/11664 cut-off events. For 9610/9695 co-relation queries the response was YES. Maximal size of possible extension queue 409. Compared 102676 event pairs, 2057 based on Foata normal form. 1983/13632 useless extension candidates. Maximal degree in co-relation 17757. Up to 5755 conditions per place. [2023-08-04 04:32:17,465 INFO L140 encePairwiseOnDemand]: 257/285 looper letters, 92 selfloop transitions, 35 changer transitions 0/144 dead transitions. [2023-08-04 04:32:17,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 954 flow [2023-08-04 04:32:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:32:17,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:32:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 509 transitions. [2023-08-04 04:32:17,468 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5953216374269006 [2023-08-04 04:32:17,468 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 509 transitions. [2023-08-04 04:32:17,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 509 transitions. [2023-08-04 04:32:17,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:17,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 509 transitions. [2023-08-04 04:32:17,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 169.66666666666666) internal successors, (509), 3 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:17,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:17,471 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:17,471 INFO L175 Difference]: Start difference. First operand has 101 places, 88 transitions, 426 flow. Second operand 3 states and 509 transitions. [2023-08-04 04:32:17,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 954 flow [2023-08-04 04:32:17,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 144 transitions, 954 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:32:17,485 INFO L231 Difference]: Finished difference. Result has 104 places, 111 transitions, 660 flow [2023-08-04 04:32:17,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=426, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=660, PETRI_PLACES=104, PETRI_TRANSITIONS=111} [2023-08-04 04:32:17,486 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2023-08-04 04:32:17,486 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 111 transitions, 660 flow [2023-08-04 04:32:17,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:17,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:17,487 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:17,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 04:32:17,487 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:17,487 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:17,487 INFO L85 PathProgramCache]: Analyzing trace with hash -841993768, now seen corresponding path program 1 times [2023-08-04 04:32:17,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:17,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140669596] [2023-08-04 04:32:17,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:17,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:17,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:17,732 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:17,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:17,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140669596] [2023-08-04 04:32:17,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140669596] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:17,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:17,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:17,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825426600] [2023-08-04 04:32:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:17,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:17,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:17,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:17,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:17,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-04 04:32:17,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 111 transitions, 660 flow. Second operand has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:17,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:17,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-04 04:32:17,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:18,385 INFO L124 PetriNetUnfolderBase]: 2891/5848 cut-off events. [2023-08-04 04:32:18,385 INFO L125 PetriNetUnfolderBase]: For 7008/7012 co-relation queries the response was YES. [2023-08-04 04:32:18,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19682 conditions, 5848 events. 2891/5848 cut-off events. For 7008/7012 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 41452 event pairs, 645 based on Foata normal form. 113/5951 useless extension candidates. Maximal degree in co-relation 16080. Up to 4912 conditions per place. [2023-08-04 04:32:18,403 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 95 selfloop transitions, 10 changer transitions 9/129 dead transitions. [2023-08-04 04:32:18,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 129 transitions, 921 flow [2023-08-04 04:32:18,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:18,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 641 transitions. [2023-08-04 04:32:18,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622807017543859 [2023-08-04 04:32:18,405 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 641 transitions. [2023-08-04 04:32:18,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 641 transitions. [2023-08-04 04:32:18,406 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:18,406 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 641 transitions. [2023-08-04 04:32:18,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.25) internal successors, (641), 4 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:18,409 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:18,409 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:18,409 INFO L175 Difference]: Start difference. First operand has 104 places, 111 transitions, 660 flow. Second operand 4 states and 641 transitions. [2023-08-04 04:32:18,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 129 transitions, 921 flow [2023-08-04 04:32:18,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 129 transitions, 866 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:18,428 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 497 flow [2023-08-04 04:32:18,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=497, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2023-08-04 04:32:18,429 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2023-08-04 04:32:18,429 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 497 flow [2023-08-04 04:32:18,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.6) internal successors, (733), 5 states have internal predecessors, (733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:18,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:18,430 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:18,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:32:18,430 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:18,430 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:18,430 INFO L85 PathProgramCache]: Analyzing trace with hash -178837052, now seen corresponding path program 1 times [2023-08-04 04:32:18,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:18,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785560054] [2023-08-04 04:32:18,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:18,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:18,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:18,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:18,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:18,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785560054] [2023-08-04 04:32:18,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785560054] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:18,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:18,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:32:18,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39923060] [2023-08-04 04:32:18,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:18,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 04:32:18,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:18,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 04:32:18,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:32:18,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 285 [2023-08-04 04:32:18,658 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 497 flow. Second operand has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:18,658 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:18,658 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 285 [2023-08-04 04:32:18,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:19,121 INFO L124 PetriNetUnfolderBase]: 1769/3911 cut-off events. [2023-08-04 04:32:19,121 INFO L125 PetriNetUnfolderBase]: For 5570/5609 co-relation queries the response was YES. [2023-08-04 04:32:19,129 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11819 conditions, 3911 events. 1769/3911 cut-off events. For 5570/5609 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 27514 event pairs, 1166 based on Foata normal form. 117/3986 useless extension candidates. Maximal degree in co-relation 9231. Up to 2827 conditions per place. [2023-08-04 04:32:19,137 INFO L140 encePairwiseOnDemand]: 273/285 looper letters, 85 selfloop transitions, 23 changer transitions 0/133 dead transitions. [2023-08-04 04:32:19,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 133 transitions, 912 flow [2023-08-04 04:32:19,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-04 04:32:19,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-04 04:32:19,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1609 transitions. [2023-08-04 04:32:19,141 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5645614035087719 [2023-08-04 04:32:19,141 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1609 transitions. [2023-08-04 04:32:19,141 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1609 transitions. [2023-08-04 04:32:19,142 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:19,143 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1609 transitions. [2023-08-04 04:32:19,146 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 160.9) internal successors, (1609), 10 states have internal predecessors, (1609), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,150 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 285.0) internal successors, (3135), 11 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,150 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 285.0) internal successors, (3135), 11 states have internal predecessors, (3135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,151 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 497 flow. Second operand 10 states and 1609 transitions. [2023-08-04 04:32:19,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 133 transitions, 912 flow [2023-08-04 04:32:19,158 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 133 transitions, 874 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 04:32:19,159 INFO L231 Difference]: Finished difference. Result has 104 places, 91 transitions, 507 flow [2023-08-04 04:32:19,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=507, PETRI_PLACES=104, PETRI_TRANSITIONS=91} [2023-08-04 04:32:19,160 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2023-08-04 04:32:19,160 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 91 transitions, 507 flow [2023-08-04 04:32:19,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:19,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:19,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 04:32:19,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:19,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:19,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1511051641, now seen corresponding path program 1 times [2023-08-04 04:32:19,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:19,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660014464] [2023-08-04 04:32:19,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:19,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:19,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:19,338 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:32:19,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:19,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660014464] [2023-08-04 04:32:19,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660014464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:19,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:19,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:19,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436917372] [2023-08-04 04:32:19,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:19,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:32:19,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:19,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:32:19,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:32:19,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 285 [2023-08-04 04:32:19,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 91 transitions, 507 flow. Second operand has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:19,474 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 285 [2023-08-04 04:32:19,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:19,645 INFO L124 PetriNetUnfolderBase]: 458/1406 cut-off events. [2023-08-04 04:32:19,645 INFO L125 PetriNetUnfolderBase]: For 2305/2320 co-relation queries the response was YES. [2023-08-04 04:32:19,648 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4412 conditions, 1406 events. 458/1406 cut-off events. For 2305/2320 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 8898 event pairs, 119 based on Foata normal form. 216/1621 useless extension candidates. Maximal degree in co-relation 2634. Up to 715 conditions per place. [2023-08-04 04:32:19,650 INFO L140 encePairwiseOnDemand]: 279/285 looper letters, 72 selfloop transitions, 12 changer transitions 0/112 dead transitions. [2023-08-04 04:32:19,650 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 112 transitions, 808 flow [2023-08-04 04:32:19,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:19,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:19,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 678 transitions. [2023-08-04 04:32:19,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5947368421052631 [2023-08-04 04:32:19,652 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 678 transitions. [2023-08-04 04:32:19,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 678 transitions. [2023-08-04 04:32:19,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:19,653 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 678 transitions. [2023-08-04 04:32:19,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,656 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,657 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,657 INFO L175 Difference]: Start difference. First operand has 104 places, 91 transitions, 507 flow. Second operand 4 states and 678 transitions. [2023-08-04 04:32:19,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 112 transitions, 808 flow [2023-08-04 04:32:19,663 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 112 transitions, 752 flow, removed 0 selfloop flow, removed 9 redundant places. [2023-08-04 04:32:19,664 INFO L231 Difference]: Finished difference. Result has 98 places, 90 transitions, 481 flow [2023-08-04 04:32:19,664 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=457, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=481, PETRI_PLACES=98, PETRI_TRANSITIONS=90} [2023-08-04 04:32:19,665 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 28 predicate places. [2023-08-04 04:32:19,665 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 90 transitions, 481 flow [2023-08-04 04:32:19,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 159.0) internal successors, (795), 5 states have internal predecessors, (795), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,665 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:19,666 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:19,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 04:32:19,666 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:19,666 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:19,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1642051779, now seen corresponding path program 1 times [2023-08-04 04:32:19,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:19,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141507887] [2023-08-04 04:32:19,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:19,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:19,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:19,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:19,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141507887] [2023-08-04 04:32:19,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141507887] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:19,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:19,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:19,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544812689] [2023-08-04 04:32:19,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:19,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:19,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:19,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:19,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:19,829 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-04 04:32:19,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 90 transitions, 481 flow. Second operand has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:19,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:19,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-04 04:32:19,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:20,073 INFO L124 PetriNetUnfolderBase]: 437/1350 cut-off events. [2023-08-04 04:32:20,073 INFO L125 PetriNetUnfolderBase]: For 2437/2448 co-relation queries the response was YES. [2023-08-04 04:32:20,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4231 conditions, 1350 events. 437/1350 cut-off events. For 2437/2448 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8450 event pairs, 189 based on Foata normal form. 6/1344 useless extension candidates. Maximal degree in co-relation 2699. Up to 442 conditions per place. [2023-08-04 04:32:20,078 INFO L140 encePairwiseOnDemand]: 278/285 looper letters, 97 selfloop transitions, 7 changer transitions 7/144 dead transitions. [2023-08-04 04:32:20,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 144 transitions, 1005 flow [2023-08-04 04:32:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:32:20,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:32:20,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1030 transitions. [2023-08-04 04:32:20,081 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6023391812865497 [2023-08-04 04:32:20,081 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1030 transitions. [2023-08-04 04:32:20,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1030 transitions. [2023-08-04 04:32:20,082 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:20,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1030 transitions. [2023-08-04 04:32:20,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 171.66666666666666) internal successors, (1030), 6 states have internal predecessors, (1030), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,086 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,087 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,087 INFO L175 Difference]: Start difference. First operand has 98 places, 90 transitions, 481 flow. Second operand 6 states and 1030 transitions. [2023-08-04 04:32:20,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 144 transitions, 1005 flow [2023-08-04 04:32:20,093 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 144 transitions, 988 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:20,094 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 497 flow [2023-08-04 04:32:20,095 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=469, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=497, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2023-08-04 04:32:20,095 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 34 predicate places. [2023-08-04 04:32:20,095 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 497 flow [2023-08-04 04:32:20,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.66666666666666) internal successors, (970), 6 states have internal predecessors, (970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,096 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:20,096 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:20,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-04 04:32:20,096 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:20,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:20,097 INFO L85 PathProgramCache]: Analyzing trace with hash 845222715, now seen corresponding path program 1 times [2023-08-04 04:32:20,097 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:20,097 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106151617] [2023-08-04 04:32:20,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:20,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:20,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:20,225 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:20,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:20,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106151617] [2023-08-04 04:32:20,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106151617] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:20,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:20,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:32:20,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637396266] [2023-08-04 04:32:20,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:20,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-04 04:32:20,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:20,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-04 04:32:20,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-04 04:32:20,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 285 [2023-08-04 04:32:20,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 497 flow. Second operand has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:20,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 285 [2023-08-04 04:32:20,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:20,529 INFO L124 PetriNetUnfolderBase]: 412/1283 cut-off events. [2023-08-04 04:32:20,530 INFO L125 PetriNetUnfolderBase]: For 2259/2270 co-relation queries the response was YES. [2023-08-04 04:32:20,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4138 conditions, 1283 events. 412/1283 cut-off events. For 2259/2270 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7907 event pairs, 164 based on Foata normal form. 7/1279 useless extension candidates. Maximal degree in co-relation 2824. Up to 414 conditions per place. [2023-08-04 04:32:20,536 INFO L140 encePairwiseOnDemand]: 278/285 looper letters, 88 selfloop transitions, 7 changer transitions 7/138 dead transitions. [2023-08-04 04:32:20,537 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 138 transitions, 954 flow [2023-08-04 04:32:20,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 04:32:20,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 04:32:20,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1024 transitions. [2023-08-04 04:32:20,539 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5988304093567252 [2023-08-04 04:32:20,539 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1024 transitions. [2023-08-04 04:32:20,539 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1024 transitions. [2023-08-04 04:32:20,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:20,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1024 transitions. [2023-08-04 04:32:20,542 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 170.66666666666666) internal successors, (1024), 6 states have internal predecessors, (1024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,544 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,545 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 285.0) internal successors, (1995), 7 states have internal predecessors, (1995), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,545 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 497 flow. Second operand 6 states and 1024 transitions. [2023-08-04 04:32:20,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 138 transitions, 954 flow [2023-08-04 04:32:20,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 138 transitions, 941 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:32:20,554 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 518 flow [2023-08-04 04:32:20,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=489, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=518, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2023-08-04 04:32:20,554 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 40 predicate places. [2023-08-04 04:32:20,555 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 518 flow [2023-08-04 04:32:20,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 161.33333333333334) internal successors, (968), 6 states have internal predecessors, (968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:20,555 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:20,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 04:32:20,555 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:32:20,556 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:20,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1793661560, now seen corresponding path program 1 times [2023-08-04 04:32:20,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:20,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [662526307] [2023-08-04 04:32:20,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:20,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:20,789 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:32:20,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:20,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [662526307] [2023-08-04 04:32:20,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [662526307] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:20,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:20,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-04 04:32:20,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610427196] [2023-08-04 04:32:20,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:20,790 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 04:32:20,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:20,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 04:32:20,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:32:20,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 285 [2023-08-04 04:32:20,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 518 flow. Second operand has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:20,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:20,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 285 [2023-08-04 04:32:20,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:21,200 INFO L124 PetriNetUnfolderBase]: 443/1284 cut-off events. [2023-08-04 04:32:21,201 INFO L125 PetriNetUnfolderBase]: For 2404/2416 co-relation queries the response was YES. [2023-08-04 04:32:21,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4346 conditions, 1284 events. 443/1284 cut-off events. For 2404/2416 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 7717 event pairs, 217 based on Foata normal form. 5/1278 useless extension candidates. Maximal degree in co-relation 2965. Up to 607 conditions per place. [2023-08-04 04:32:21,206 INFO L140 encePairwiseOnDemand]: 275/285 looper letters, 0 selfloop transitions, 0 changer transitions 137/137 dead transitions. [2023-08-04 04:32:21,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 137 transitions, 978 flow [2023-08-04 04:32:21,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 04:32:21,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 04:32:21,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1305 transitions. [2023-08-04 04:32:21,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5723684210526315 [2023-08-04 04:32:21,209 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1305 transitions. [2023-08-04 04:32:21,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1305 transitions. [2023-08-04 04:32:21,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:21,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1305 transitions. [2023-08-04 04:32:21,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 163.125) internal successors, (1305), 8 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,215 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,216 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 285.0) internal successors, (2565), 9 states have internal predecessors, (2565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,216 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 518 flow. Second operand 8 states and 1305 transitions. [2023-08-04 04:32:21,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 137 transitions, 978 flow [2023-08-04 04:32:21,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 137 transitions, 963 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:32:21,225 INFO L231 Difference]: Finished difference. Result has 113 places, 0 transitions, 0 flow [2023-08-04 04:32:21,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=500, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=0, PETRI_PLACES=113, PETRI_TRANSITIONS=0} [2023-08-04 04:32:21,226 INFO L281 CegarLoopForPetriNet]: 70 programPoint places, 43 predicate places. [2023-08-04 04:32:21,226 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 0 transitions, 0 flow [2023-08-04 04:32:21,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 158.0) internal successors, (1264), 8 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:21,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:32:21,226 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:32:21,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:32:21,227 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:32:21,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 04:32:21,227 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:32:21,228 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:32:21,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 180 transitions, 378 flow [2023-08-04 04:32:21,258 INFO L124 PetriNetUnfolderBase]: 22/336 cut-off events. [2023-08-04 04:32:21,258 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:32:21,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 350 conditions, 336 events. 22/336 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 999 event pairs, 0 based on Foata normal form. 0/298 useless extension candidates. Maximal degree in co-relation 213. Up to 8 conditions per place. [2023-08-04 04:32:21,259 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 180 transitions, 378 flow [2023-08-04 04:32:21,260 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 112 transitions, 236 flow [2023-08-04 04:32:21,260 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:32:21,260 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 112 transitions, 236 flow [2023-08-04 04:32:21,261 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 112 transitions, 236 flow [2023-08-04 04:32:21,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 112 transitions, 236 flow [2023-08-04 04:32:21,269 INFO L124 PetriNetUnfolderBase]: 0/125 cut-off events. [2023-08-04 04:32:21,269 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:32:21,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 125 events. 0/125 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 106 event pairs, 0 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 0. Up to 3 conditions per place. [2023-08-04 04:32:21,271 INFO L119 LiptonReduction]: Number of co-enabled transitions 3564 [2023-08-04 04:32:23,813 INFO L134 LiptonReduction]: Checked pairs total: 16730 [2023-08-04 04:32:23,813 INFO L136 LiptonReduction]: Total number of compositions: 68 [2023-08-04 04:32:23,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:32:23,815 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=true, 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;@679c02cf, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:32:23,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:32:23,817 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:32:23,817 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 04:32:23,817 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 04:32:23,818 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:32:23,818 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2023-08-04 04:32:23,818 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:32:23,818 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:32:23,818 INFO L85 PathProgramCache]: Analyzing trace with hash 1180422159, now seen corresponding path program 1 times [2023-08-04 04:32:23,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:32:23,818 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213008027] [2023-08-04 04:32:23,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:32:23,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:32:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:32:23,844 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:32:23,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:32:23,845 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213008027] [2023-08-04 04:32:23,845 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213008027] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:32:23,845 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:32:23,845 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:32:23,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249713793] [2023-08-04 04:32:23,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:32:23,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:32:23,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:32:23,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:32:23,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:32:23,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 162 out of 248 [2023-08-04 04:32:23,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 46 transitions, 104 flow. Second operand has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,856 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:32:23,856 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 162 of 248 [2023-08-04 04:32:23,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:32:23,918 INFO L124 PetriNetUnfolderBase]: 156/475 cut-off events. [2023-08-04 04:32:23,919 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 04:32:23,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 859 conditions, 475 events. 156/475 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 2281 event pairs, 72 based on Foata normal form. 156/627 useless extension candidates. Maximal degree in co-relation 305. Up to 325 conditions per place. [2023-08-04 04:32:23,920 INFO L140 encePairwiseOnDemand]: 246/248 looper letters, 0 selfloop transitions, 0 changer transitions 57/57 dead transitions. [2023-08-04 04:32:23,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 200 flow [2023-08-04 04:32:23,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:32:23,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:32:23,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 688 transitions. [2023-08-04 04:32:23,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6935483870967742 [2023-08-04 04:32:23,922 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 688 transitions. [2023-08-04 04:32:23,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 688 transitions. [2023-08-04 04:32:23,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:32:23,922 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 688 transitions. [2023-08-04 04:32:23,924 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 172.0) internal successors, (688), 4 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,925 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,925 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,925 INFO L175 Difference]: Start difference. First operand has 51 places, 46 transitions, 104 flow. Second operand 4 states and 688 transitions. [2023-08-04 04:32:23,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 200 flow [2023-08-04 04:32:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 57 transitions, 199 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:32:23,926 INFO L231 Difference]: Finished difference. Result has 52 places, 0 transitions, 0 flow [2023-08-04 04:32:23,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=97, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=52, PETRI_TRANSITIONS=0} [2023-08-04 04:32:23,927 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 1 predicate places. [2023-08-04 04:32:23,927 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 0 transitions, 0 flow [2023-08-04 04:32:23,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 163.25) internal successors, (653), 4 states have internal predecessors, (653), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:32:23,927 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:32:23,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 04:32:23,928 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:32:23,930 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (2/2) [2023-08-04 04:32:23,930 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:32:23,930 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:32:23,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:32:23 BasicIcfg [2023-08-04 04:32:23,936 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:32:23,936 INFO L158 Benchmark]: Toolchain (without parser) took 26449.63ms. Allocated memory was 526.4MB in the beginning and 1.0GB in the end (delta: 520.1MB). Free memory was 472.6MB in the beginning and 335.8MB in the end (delta: 136.8MB). Peak memory consumption was 657.3MB. Max. memory is 16.0GB. [2023-08-04 04:32:23,936 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 295.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:32:23,937 INFO L158 Benchmark]: CACSL2BoogieTranslator took 368.90ms. Allocated memory is still 526.4MB. Free memory was 472.6MB in the beginning and 452.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-08-04 04:32:23,937 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.25ms. Allocated memory is still 526.4MB. Free memory was 452.6MB in the beginning and 450.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:23,937 INFO L158 Benchmark]: Boogie Preprocessor took 30.93ms. Allocated memory is still 526.4MB. Free memory was 450.5MB in the beginning and 448.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:32:23,937 INFO L158 Benchmark]: RCFGBuilder took 417.56ms. Allocated memory is still 526.4MB. Free memory was 448.8MB in the beginning and 431.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-04 04:32:23,938 INFO L158 Benchmark]: TraceAbstraction took 25590.38ms. Allocated memory was 526.4MB in the beginning and 1.0GB in the end (delta: 520.1MB). Free memory was 431.2MB in the beginning and 335.8MB in the end (delta: 95.4MB). Peak memory consumption was 617.4MB. Max. memory is 16.0GB. [2023-08-04 04:32:23,939 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 348.1MB. Free memory is still 295.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 368.90ms. Allocated memory is still 526.4MB. Free memory was 472.6MB in the beginning and 452.6MB in the end (delta: 20.0MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 35.25ms. Allocated memory is still 526.4MB. Free memory was 452.6MB in the beginning and 450.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.93ms. Allocated memory is still 526.4MB. Free memory was 450.5MB in the beginning and 448.8MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 417.56ms. Allocated memory is still 526.4MB. Free memory was 448.8MB in the beginning and 431.6MB in the end (delta: 17.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 25590.38ms. Allocated memory was 526.4MB in the beginning and 1.0GB in the end (delta: 520.1MB). Free memory was 431.2MB in the beginning and 335.8MB in the end (delta: 95.4MB). Peak memory consumption was 617.4MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 123 PlacesBefore, 43 PlacesAfterwards, 124 TransitionsBefore, 43 TransitionsAfterwards, 3696 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 1 ChoiceCompositions, 96 TotalNumberOfCompositions, 10748 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3140, independent: 2758, independent conditional: 0, independent unconditional: 2758, dependent: 382, dependent conditional: 0, dependent unconditional: 382, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1810, independent: 1750, independent conditional: 0, independent unconditional: 1750, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3140, independent: 1008, independent conditional: 0, independent unconditional: 1008, dependent: 322, dependent conditional: 0, dependent unconditional: 322, unknown: 1810, unknown conditional: 0, unknown unconditional: 1810] , Statistics on independence cache: Total cache size (in pairs): 105, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 35, Negative conditional cache size: 0, Negative unconditional cache size: 35, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 81 PlacesBefore, 8 PlacesAfterwards, 78 TransitionsBefore, 5 TransitionsAfterwards, 660 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 5 ConcurrentYvCompositions, 0 ChoiceCompositions, 76 TotalNumberOfCompositions, 500 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 500, independent: 500, independent conditional: 0, independent unconditional: 500, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 333, independent: 333, independent conditional: 0, independent unconditional: 333, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 500, independent: 167, independent conditional: 0, independent unconditional: 167, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 333, unknown conditional: 0, unknown unconditional: 333] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 159 PlacesBefore, 70 PlacesAfterwards, 158 TransitionsBefore, 67 TransitionsAfterwards, 9636 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 105 TotalNumberOfCompositions, 38559 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9808, independent: 9120, independent conditional: 0, independent unconditional: 9120, dependent: 688, dependent conditional: 0, dependent unconditional: 688, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4457, independent: 4352, independent conditional: 0, independent unconditional: 4352, dependent: 105, dependent conditional: 0, dependent unconditional: 105, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9808, independent: 4768, independent conditional: 0, independent unconditional: 4768, dependent: 583, dependent conditional: 0, dependent unconditional: 583, unknown: 4457, unknown conditional: 0, unknown unconditional: 4457] , Statistics on independence cache: Total cache size (in pairs): 485, Positive cache size: 426, Positive conditional cache size: 0, Positive unconditional cache size: 426, Negative cache size: 59, Negative conditional cache size: 0, Negative unconditional cache size: 59, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 117 PlacesBefore, 51 PlacesAfterwards, 112 TransitionsBefore, 46 TransitionsAfterwards, 3564 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 0 ChoiceCompositions, 68 TotalNumberOfCompositions, 16730 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5132, independent: 4564, independent conditional: 0, independent unconditional: 4564, dependent: 568, dependent conditional: 0, dependent unconditional: 568, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1682, independent: 1598, independent conditional: 0, independent unconditional: 1598, dependent: 84, dependent conditional: 0, dependent unconditional: 84, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5132, independent: 2966, independent conditional: 0, independent unconditional: 2966, dependent: 484, dependent conditional: 0, dependent unconditional: 484, unknown: 1682, unknown conditional: 0, unknown unconditional: 1682] , Statistics on independence cache: Total cache size (in pairs): 321, Positive cache size: 266, Positive conditional cache size: 0, Positive unconditional cache size: 266, Negative cache size: 55, Negative conditional cache size: 0, Negative unconditional cache size: 55, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 173 locations, 5 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: 4.2s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 76 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 116 IncrementalHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 1 mSDtfsCounter, 116 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 0.3s InterpolantComputationTime, 18 NumberOfCodeBlocks, 18 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 47 SizeOfPredicates, 0 NumberOfNonLiveVariables, 130 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 PerfectInterpolantSequences, 0/3 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 207 locations, 5 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: 15.3s, OverallIterations: 14, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 10.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1554 SdHoareTripleChecker+Valid, 2.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1110 mSDsluCounter, 335 SdHoareTripleChecker+Invalid, 1.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 281 mSDsCounter, 307 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4141 IncrementalHoareTripleChecker+Invalid, 4448 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 307 mSolverCounterUnsat, 54 mSDtfsCounter, 4141 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 70 SyntacticMatches, 14 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=660occurred in iteration=8, InterpolantAutomatonStates: 72, 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, 1.8s InterpolantComputationTime, 391 NumberOfCodeBlocks, 391 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 403 ConstructedInterpolants, 0 QuantifiedInterpolants, 1810 SizeOfPredicates, 3 NumberOfNonLiveVariables, 326 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 18 InterpolantComputations, 12 PerfectInterpolantSequences, 75/87 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 173 locations, 5 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: 3.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 4 procedures, 207 locations, 5 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: 2.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 60 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 54 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 65 IncrementalHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 65 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=0, InterpolantAutomatonStates: 4, 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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 7 ConstructedInterpolants, 0 QuantifiedInterpolants, 19 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 5/5 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 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-04 04:32:23,977 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...