/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_27-funptr_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 21:24:41,499 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 21:24:41,569 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 21:24:41,576 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 21:24:41,576 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 21:24:41,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 21:24:41,577 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 21:24:41,602 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 21:24:41,602 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 21:24:41,606 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 21:24:41,606 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 21:24:41,606 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 21:24:41,607 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 21:24:41,607 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 21:24:41,607 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 21:24:41,608 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 21:24:41,608 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 21:24:41,608 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 21:24:41,608 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 21:24:41,609 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 21:24:41,609 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 21:24:41,609 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 21:24:41,609 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 21:24:41,610 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 21:24:41,610 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 21:24:41,610 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 21:24:41,610 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 21:24:41,611 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 21:24:41,611 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 21:24:41,611 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 21:24:41,612 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:24:41,612 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 21:24:41,612 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 21:24:41,613 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 21:24:41,614 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 21:24:41,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 21:24:41,838 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 21:24:41,856 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 21:24:41,858 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 21:24:41,859 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 21:24:41,859 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 21:24:41,860 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_27-funptr_racing_bound2.i [2023-08-03 21:24:43,014 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 21:24:43,235 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 21:24:43,236 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_27-funptr_racing_bound2.i [2023-08-03 21:24:43,267 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1b42a07/82ac7a4111c7489d8287794c9eb5a049/FLAG440d73d5d [2023-08-03 21:24:43,280 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c1b42a07/82ac7a4111c7489d8287794c9eb5a049 [2023-08-03 21:24:43,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 21:24:43,284 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 21:24:43,285 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 21:24:43,285 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 21:24:43,290 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 21:24:43,290 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,291 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d4c55f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43, skipping insertion in model container [2023-08-03 21:24:43,291 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,345 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 21:24:43,713 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_27-funptr_racing_bound2.i[41323,41336] [2023-08-03 21:24:43,735 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:24:43,752 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 21:24:43,766 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:24:43,768 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 21:24:43,775 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-03 21:24:43,780 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_27-funptr_racing_bound2.i[41323,41336] [2023-08-03 21:24:43,787 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 21:24:43,830 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 21:24:43,835 INFO L206 MainTranslator]: Completed translation [2023-08-03 21:24:43,836 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43 WrapperNode [2023-08-03 21:24:43,836 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 21:24:43,837 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 21:24:43,837 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 21:24:43,837 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 21:24:43,841 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,858 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,887 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 148 [2023-08-03 21:24:43,887 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 21:24:43,888 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 21:24:43,888 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 21:24:43,888 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 21:24:43,894 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,897 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,897 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,909 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,912 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 21:24:43,912 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 21:24:43,912 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 21:24:43,912 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 21:24:43,913 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (1/1) ... [2023-08-03 21:24:43,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 21:24:43,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:44,189 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) [2023-08-03 21:24:44,200 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 [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 21:24:44,218 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 21:24:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 21:24:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 21:24:44,219 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 21:24:44,219 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 21:24:44,220 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 21:24:44,341 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 21:24:44,342 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 21:24:44,544 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 21:24:44,551 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 21:24:44,551 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 21:24:44,553 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:24:44 BoogieIcfgContainer [2023-08-03 21:24:44,553 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 21:24:44,555 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 21:24:44,555 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 21:24:44,558 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 21:24:44,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 09:24:43" (1/3) ... [2023-08-03 21:24:44,558 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd5c765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:24:44, skipping insertion in model container [2023-08-03 21:24:44,558 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 09:24:43" (2/3) ... [2023-08-03 21:24:44,559 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1dd5c765 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 09:24:44, skipping insertion in model container [2023-08-03 21:24:44,559 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 09:24:44" (3/3) ... [2023-08-03 21:24:44,560 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_27-funptr_racing_bound2.i [2023-08-03 21:24:44,566 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 21:24:44,574 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 21:24:44,575 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 21:24:44,575 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 21:24:44,643 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 21:24:44,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 145 transitions, 298 flow [2023-08-03 21:24:44,737 INFO L124 PetriNetUnfolderBase]: 24/182 cut-off events. [2023-08-03 21:24:44,738 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:24:44,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188 conditions, 182 events. 24/182 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 486 event pairs, 0 based on Foata normal form. 0/153 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-08-03 21:24:44,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 145 transitions, 298 flow [2023-08-03 21:24:44,750 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 140 transitions, 285 flow [2023-08-03 21:24:44,753 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:44,761 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 140 transitions, 285 flow [2023-08-03 21:24:44,763 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 140 transitions, 285 flow [2023-08-03 21:24:44,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 140 transitions, 285 flow [2023-08-03 21:24:44,816 INFO L124 PetriNetUnfolderBase]: 23/177 cut-off events. [2023-08-03 21:24:44,817 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:44,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 177 events. 23/177 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 478 event pairs, 0 based on Foata normal form. 0/148 useless extension candidates. Maximal degree in co-relation 104. Up to 4 conditions per place. [2023-08-03 21:24:44,823 INFO L119 LiptonReduction]: Number of co-enabled transitions 5332 [2023-08-03 21:24:48,007 INFO L134 LiptonReduction]: Checked pairs total: 11408 [2023-08-03 21:24:48,007 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 21:24:48,019 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:24:48,024 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;@f1ee272, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:48,025 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:48,029 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:48,029 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-03 21:24:48,029 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 21:24:48,029 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:48,030 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 21:24:48,030 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:24:48,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:48,034 INFO L85 PathProgramCache]: Analyzing trace with hash -317765364, now seen corresponding path program 1 times [2023-08-03 21:24:48,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:48,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627299144] [2023-08-03 21:24:48,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:48,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:48,179 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:24:48,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:24:48,246 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:24:48,248 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:24:48,249 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:24:48,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 21:24:48,250 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:24:48,252 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (1/2) [2023-08-03 21:24:48,253 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 21:24:48,253 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 21:24:48,283 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 21:24:48,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:48,331 INFO L124 PetriNetUnfolderBase]: 45/307 cut-off events. [2023-08-03 21:24:48,332 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:48,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 45/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-08-03 21:24:48,336 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:48,340 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:48,340 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:48,340 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:48,340 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:48,340 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:48,390 INFO L124 PetriNetUnfolderBase]: 45/307 cut-off events. [2023-08-03 21:24:48,390 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:48,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 45/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-08-03 21:24:48,404 INFO L119 LiptonReduction]: Number of co-enabled transitions 19716 [2023-08-03 21:24:51,554 INFO L134 LiptonReduction]: Checked pairs total: 53799 [2023-08-03 21:24:51,555 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-03 21:24:51,557 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 21:24:51,557 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;@f1ee272, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:51,558 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:51,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:51,567 INFO L124 PetriNetUnfolderBase]: 13/73 cut-off events. [2023-08-03 21:24:51,567 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 21:24:51,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:51,568 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 21:24:51,569 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 21:24:51,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:51,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1519777946, now seen corresponding path program 1 times [2023-08-03 21:24:51,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:51,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920462544] [2023-08-03 21:24:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:51,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:51,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:51,735 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:51,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:51,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920462544] [2023-08-03 21:24:51,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920462544] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:51,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [657813158] [2023-08-03 21:24:51,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:51,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:51,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:51,740 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) [2023-08-03 21:24:51,770 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 21:24:51,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:51,870 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 21:24:51,872 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:51,908 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:51,908 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 21:24:51,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [657813158] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:51,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 21:24:51,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 21:24:51,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284817494] [2023-08-03 21:24:51,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:51,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:24:51,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:51,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:24:51,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 21:24:51,954 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 349 [2023-08-03 21:24:51,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 218 flow. Second operand has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:51,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:51,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 349 [2023-08-03 21:24:51,959 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:53,049 INFO L124 PetriNetUnfolderBase]: 8226/13240 cut-off events. [2023-08-03 21:24:53,050 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2023-08-03 21:24:53,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26023 conditions, 13240 events. 8226/13240 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 422. Compared 95045 event pairs, 0 based on Foata normal form. 1616/13632 useless extension candidates. Maximal degree in co-relation 1728. Up to 11880 conditions per place. [2023-08-03 21:24:53,076 INFO L140 encePairwiseOnDemand]: 318/349 looper letters, 0 selfloop transitions, 0 changer transitions 131/131 dead transitions. [2023-08-03 21:24:53,076 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 131 transitions, 506 flow [2023-08-03 21:24:53,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:24:53,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:24:53,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1029 transitions. [2023-08-03 21:24:53,090 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5896848137535816 [2023-08-03 21:24:53,091 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1029 transitions. [2023-08-03 21:24:53,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1029 transitions. [2023-08-03 21:24:53,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:53,096 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1029 transitions. [2023-08-03 21:24:53,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 205.8) internal successors, (1029), 5 states have internal predecessors, (1029), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:53,106 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:53,107 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:53,109 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 218 flow. Second operand 5 states and 1029 transitions. [2023-08-03 21:24:53,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 131 transitions, 506 flow [2023-08-03 21:24:53,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 131 transitions, 502 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 21:24:53,121 INFO L231 Difference]: Finished difference. Result has 74 places, 0 transitions, 0 flow [2023-08-03 21:24:53,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=74, PETRI_TRANSITIONS=0} [2023-08-03 21:24:53,125 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 0 predicate places. [2023-08-03 21:24:53,126 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 0 transitions, 0 flow [2023-08-03 21:24:53,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:53,127 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-03 21:24:53,134 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 21:24:53,332 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 [2023-08-03 21:24:53,332 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 21:24:53,333 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE (1/2) [2023-08-03 21:24:53,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:53,361 INFO L124 PetriNetUnfolderBase]: 45/307 cut-off events. [2023-08-03 21:24:53,361 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:53,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 45/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-08-03 21:24:53,363 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:53,366 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:53,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 21:24:53,366 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:53,367 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:53,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 21:24:53,391 INFO L124 PetriNetUnfolderBase]: 45/307 cut-off events. [2023-08-03 21:24:53,391 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 21:24:53,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 321 conditions, 307 events. 45/307 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 1043 event pairs, 0 based on Foata normal form. 0/255 useless extension candidates. Maximal degree in co-relation 184. Up to 8 conditions per place. [2023-08-03 21:24:53,403 INFO L119 LiptonReduction]: Number of co-enabled transitions 19716 [2023-08-03 21:24:56,710 INFO L134 LiptonReduction]: Checked pairs total: 60076 [2023-08-03 21:24:56,710 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-03 21:24:56,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 21:24:56,713 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;@f1ee272, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 21:24:56,713 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-03 21:24:56,715 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 21:24:56,715 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 21:24:56,715 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 21:24:56,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:56,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:56,716 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:56,716 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:56,716 INFO L85 PathProgramCache]: Analyzing trace with hash -1658125369, now seen corresponding path program 1 times [2023-08-03 21:24:56,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:56,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996010100] [2023-08-03 21:24:56,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:56,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:56,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:56,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:56,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:56,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996010100] [2023-08-03 21:24:56,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996010100] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:56,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:56,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 21:24:56,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261752927] [2023-08-03 21:24:56,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:56,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:24:56,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:56,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:24:56,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:24:56,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 349 [2023-08-03 21:24:56,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 100 transitions, 218 flow. Second operand has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:56,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:56,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 349 [2023-08-03 21:24:56,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:57,785 INFO L124 PetriNetUnfolderBase]: 8909/14827 cut-off events. [2023-08-03 21:24:57,786 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-08-03 21:24:57,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28666 conditions, 14827 events. 8909/14827 cut-off events. For 91/91 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 107415 event pairs, 3944 based on Foata normal form. 1745/14781 useless extension candidates. Maximal degree in co-relation 1901. Up to 13678 conditions per place. [2023-08-03 21:24:57,840 INFO L140 encePairwiseOnDemand]: 319/349 looper letters, 66 selfloop transitions, 2 changer transitions 10/93 dead transitions. [2023-08-03 21:24:57,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 356 flow [2023-08-03 21:24:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:24:57,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:24:57,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-08-03 21:24:57,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600764087870105 [2023-08-03 21:24:57,843 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-08-03 21:24:57,843 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-08-03 21:24:57,843 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:57,843 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-08-03 21:24:57,845 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 209.66666666666666) internal successors, (629), 3 states have internal predecessors, (629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:57,847 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:57,848 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:57,848 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 218 flow. Second operand 3 states and 629 transitions. [2023-08-03 21:24:57,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 356 flow [2023-08-03 21:24:57,850 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 93 transitions, 356 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 21:24:57,852 INFO L231 Difference]: Finished difference. Result has 76 places, 63 transitions, 144 flow [2023-08-03 21:24:57,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=76, PETRI_TRANSITIONS=63} [2023-08-03 21:24:57,852 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-03 21:24:57,853 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 63 transitions, 144 flow [2023-08-03 21:24:57,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.0) internal successors, (519), 3 states have internal predecessors, (519), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:57,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:57,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:57,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 21:24:57,853 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:57,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:57,854 INFO L85 PathProgramCache]: Analyzing trace with hash 273941869, now seen corresponding path program 1 times [2023-08-03 21:24:57,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:57,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776921552] [2023-08-03 21:24:57,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:57,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:57,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:57,942 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:57,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:57,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776921552] [2023-08-03 21:24:57,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776921552] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 21:24:57,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525141575] [2023-08-03 21:24:57,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:57,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 21:24:57,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 21:24:57,946 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) [2023-08-03 21:24:57,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 21:24:58,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:58,014 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 21:24:58,014 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 21:24:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:58,027 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 21:24:58,111 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 21:24:58,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525141575] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 21:24:58,112 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 21:24:58,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 21:24:58,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942666970] [2023-08-03 21:24:58,112 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 21:24:58,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:24:58,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:58,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:24:58,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:24:58,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 349 [2023-08-03 21:24:58,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 63 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:58,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:58,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 349 [2023-08-03 21:24:58,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:58,861 INFO L124 PetriNetUnfolderBase]: 5188/8579 cut-off events. [2023-08-03 21:24:58,862 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-08-03 21:24:58,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17350 conditions, 8579 events. 5188/8579 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 312. Compared 58800 event pairs, 627 based on Foata normal form. 19/8280 useless extension candidates. Maximal degree in co-relation 1198. Up to 6157 conditions per place. [2023-08-03 21:24:58,901 INFO L140 encePairwiseOnDemand]: 345/349 looper letters, 102 selfloop transitions, 3 changer transitions 1/121 dead transitions. [2023-08-03 21:24:58,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 121 transitions, 472 flow [2023-08-03 21:24:58,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:24:58,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:24:58,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 787 transitions. [2023-08-03 21:24:58,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5637535816618912 [2023-08-03 21:24:58,905 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 787 transitions. [2023-08-03 21:24:58,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 787 transitions. [2023-08-03 21:24:58,905 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:58,905 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 787 transitions. [2023-08-03 21:24:58,907 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.75) internal successors, (787), 4 states have internal predecessors, (787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:58,909 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:58,910 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:58,910 INFO L175 Difference]: Start difference. First operand has 76 places, 63 transitions, 144 flow. Second operand 4 states and 787 transitions. [2023-08-03 21:24:58,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 121 transitions, 472 flow [2023-08-03 21:24:58,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 470 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:24:58,913 INFO L231 Difference]: Finished difference. Result has 72 places, 63 transitions, 156 flow [2023-08-03 21:24:58,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=156, PETRI_PLACES=72, PETRI_TRANSITIONS=63} [2023-08-03 21:24:58,914 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-03 21:24:58,914 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 63 transitions, 156 flow [2023-08-03 21:24:58,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:58,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:58,915 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:58,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 21:24:59,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 21:24:59,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:59,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:59,120 INFO L85 PathProgramCache]: Analyzing trace with hash 1920742164, now seen corresponding path program 1 times [2023-08-03 21:24:59,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:59,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230056827] [2023-08-03 21:24:59,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:59,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:59,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:59,238 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:24:59,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:59,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230056827] [2023-08-03 21:24:59,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230056827] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:59,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:59,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 21:24:59,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088602474] [2023-08-03 21:24:59,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:59,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:24:59,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:59,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:24:59,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:24:59,265 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 349 [2023-08-03 21:24:59,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 63 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:59,266 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:59,266 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 349 [2023-08-03 21:24:59,266 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:24:59,784 INFO L124 PetriNetUnfolderBase]: 4607/7658 cut-off events. [2023-08-03 21:24:59,784 INFO L125 PetriNetUnfolderBase]: For 3418/3418 co-relation queries the response was YES. [2023-08-03 21:24:59,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16719 conditions, 7658 events. 4607/7658 cut-off events. For 3418/3418 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 49321 event pairs, 1588 based on Foata normal form. 64/7430 useless extension candidates. Maximal degree in co-relation 6905. Up to 6090 conditions per place. [2023-08-03 21:24:59,820 INFO L140 encePairwiseOnDemand]: 343/349 looper letters, 70 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2023-08-03 21:24:59,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 89 transitions, 380 flow [2023-08-03 21:24:59,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:24:59,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:24:59,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-08-03 21:24:59,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463228271251194 [2023-08-03 21:24:59,823 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-08-03 21:24:59,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-08-03 21:24:59,823 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:24:59,823 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-08-03 21:24:59,824 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 190.66666666666666) internal successors, (572), 3 states have internal predecessors, (572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:59,826 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:59,827 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:59,827 INFO L175 Difference]: Start difference. First operand has 72 places, 63 transitions, 156 flow. Second operand 3 states and 572 transitions. [2023-08-03 21:24:59,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 89 transitions, 380 flow [2023-08-03 21:24:59,829 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 89 transitions, 368 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-03 21:24:59,831 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 182 flow [2023-08-03 21:24:59,831 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-08-03 21:24:59,832 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-03 21:24:59,832 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 182 flow [2023-08-03 21:24:59,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 169.33333333333334) internal successors, (508), 3 states have internal predecessors, (508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:59,832 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:24:59,832 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:24:59,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 21:24:59,833 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:24:59,833 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:24:59,833 INFO L85 PathProgramCache]: Analyzing trace with hash 945234661, now seen corresponding path program 1 times [2023-08-03 21:24:59,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:24:59,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377495636] [2023-08-03 21:24:59,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:24:59,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:24:59,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:24:59,911 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:24:59,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:24:59,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377495636] [2023-08-03 21:24:59,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377495636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:24:59,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:24:59,911 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:24:59,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851961988] [2023-08-03 21:24:59,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:24:59,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 21:24:59,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:24:59,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 21:24:59,913 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 21:24:59,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 349 [2023-08-03 21:24:59,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:24:59,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:24:59,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 349 [2023-08-03 21:24:59,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:00,654 INFO L124 PetriNetUnfolderBase]: 4762/8249 cut-off events. [2023-08-03 21:25:00,654 INFO L125 PetriNetUnfolderBase]: For 1897/1897 co-relation queries the response was YES. [2023-08-03 21:25:00,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17535 conditions, 8249 events. 4762/8249 cut-off events. For 1897/1897 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 58566 event pairs, 1185 based on Foata normal form. 0/7990 useless extension candidates. Maximal degree in co-relation 16491. Up to 3695 conditions per place. [2023-08-03 21:25:00,695 INFO L140 encePairwiseOnDemand]: 345/349 looper letters, 134 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-08-03 21:25:00,695 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 154 transitions, 674 flow [2023-08-03 21:25:00,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 21:25:00,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 21:25:00,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 986 transitions. [2023-08-03 21:25:00,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650429799426934 [2023-08-03 21:25:00,698 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 986 transitions. [2023-08-03 21:25:00,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 986 transitions. [2023-08-03 21:25:00,698 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:00,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 986 transitions. [2023-08-03 21:25:00,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 197.2) internal successors, (986), 5 states have internal predecessors, (986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:00,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:00,704 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 349.0) internal successors, (2094), 6 states have internal predecessors, (2094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:00,704 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 182 flow. Second operand 5 states and 986 transitions. [2023-08-03 21:25:00,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 154 transitions, 674 flow [2023-08-03 21:25:00,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 154 transitions, 664 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:00,708 INFO L231 Difference]: Finished difference. Result has 78 places, 69 transitions, 201 flow [2023-08-03 21:25:00,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=201, PETRI_PLACES=78, PETRI_TRANSITIONS=69} [2023-08-03 21:25:00,709 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 4 predicate places. [2023-08-03 21:25:00,709 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 69 transitions, 201 flow [2023-08-03 21:25:00,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 175.0) internal successors, (700), 4 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:00,710 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:00,710 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:00,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 21:25:00,710 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:00,710 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:00,710 INFO L85 PathProgramCache]: Analyzing trace with hash 144045457, now seen corresponding path program 2 times [2023-08-03 21:25:00,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:00,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059459337] [2023-08-03 21:25:00,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:00,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:00,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:00,770 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 21:25:00,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:00,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059459337] [2023-08-03 21:25:00,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059459337] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:00,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:00,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 21:25:00,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [403713016] [2023-08-03 21:25:00,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:00,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 21:25:00,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:00,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 21:25:00,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 21:25:00,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 349 [2023-08-03 21:25:00,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 69 transitions, 201 flow. Second operand has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:00,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:00,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 349 [2023-08-03 21:25:00,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:01,415 INFO L124 PetriNetUnfolderBase]: 6122/10181 cut-off events. [2023-08-03 21:25:01,416 INFO L125 PetriNetUnfolderBase]: For 3347/3351 co-relation queries the response was YES. [2023-08-03 21:25:01,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22644 conditions, 10181 events. 6122/10181 cut-off events. For 3347/3351 co-relation queries the response was YES. Maximal size of possible extension queue 399. Compared 70450 event pairs, 3150 based on Foata normal form. 124/10008 useless extension candidates. Maximal degree in co-relation 16779. Up to 7913 conditions per place. [2023-08-03 21:25:01,469 INFO L140 encePairwiseOnDemand]: 331/349 looper letters, 84 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2023-08-03 21:25:01,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 543 flow [2023-08-03 21:25:01,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 21:25:01,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 21:25:01,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-03 21:25:01,471 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367717287488061 [2023-08-03 21:25:01,471 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-03 21:25:01,471 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-03 21:25:01,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:01,472 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-03 21:25:01,473 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:01,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:01,475 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 349.0) internal successors, (1396), 4 states have internal predecessors, (1396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:01,475 INFO L175 Difference]: Start difference. First operand has 78 places, 69 transitions, 201 flow. Second operand 3 states and 562 transitions. [2023-08-03 21:25:01,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 543 flow [2023-08-03 21:25:01,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 117 transitions, 540 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:01,493 INFO L231 Difference]: Finished difference. Result has 80 places, 84 transitions, 317 flow [2023-08-03 21:25:01,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=317, PETRI_PLACES=80, PETRI_TRANSITIONS=84} [2023-08-03 21:25:01,493 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 6 predicate places. [2023-08-03 21:25:01,494 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 84 transitions, 317 flow [2023-08-03 21:25:01,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 161.66666666666666) internal successors, (485), 3 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:01,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:01,494 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:01,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 21:25:01,494 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:01,495 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:01,495 INFO L85 PathProgramCache]: Analyzing trace with hash -1663603189, now seen corresponding path program 3 times [2023-08-03 21:25:01,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:01,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877314932] [2023-08-03 21:25:01,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:01,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:01,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:01,653 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:25:01,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:01,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877314932] [2023-08-03 21:25:01,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877314932] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:01,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:01,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:25:01,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730121632] [2023-08-03 21:25:01,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:01,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:25:01,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:01,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:25:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:25:01,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 349 [2023-08-03 21:25:01,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 84 transitions, 317 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:01,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:01,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 349 [2023-08-03 21:25:01,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:02,727 INFO L124 PetriNetUnfolderBase]: 9330/16453 cut-off events. [2023-08-03 21:25:02,728 INFO L125 PetriNetUnfolderBase]: For 10135/10230 co-relation queries the response was YES. [2023-08-03 21:25:02,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43650 conditions, 16453 events. 9330/16453 cut-off events. For 10135/10230 co-relation queries the response was YES. Maximal size of possible extension queue 603. Compared 128922 event pairs, 2770 based on Foata normal form. 1400/17517 useless extension candidates. Maximal degree in co-relation 23001. Up to 8573 conditions per place. [2023-08-03 21:25:02,794 INFO L140 encePairwiseOnDemand]: 326/349 looper letters, 95 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2023-08-03 21:25:02,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 143 transitions, 826 flow [2023-08-03 21:25:02,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:25:02,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:25:02,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 696 transitions. [2023-08-03 21:25:02,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498567335243553 [2023-08-03 21:25:02,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 696 transitions. [2023-08-03 21:25:02,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 696 transitions. [2023-08-03 21:25:02,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:02,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 696 transitions. [2023-08-03 21:25:02,799 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:02,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:02,801 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:02,801 INFO L175 Difference]: Start difference. First operand has 80 places, 84 transitions, 317 flow. Second operand 4 states and 696 transitions. [2023-08-03 21:25:02,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 143 transitions, 826 flow [2023-08-03 21:25:02,825 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 143 transitions, 792 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:02,827 INFO L231 Difference]: Finished difference. Result has 83 places, 108 transitions, 558 flow [2023-08-03 21:25:02,827 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=558, PETRI_PLACES=83, PETRI_TRANSITIONS=108} [2023-08-03 21:25:02,828 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 9 predicate places. [2023-08-03 21:25:02,828 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 108 transitions, 558 flow [2023-08-03 21:25:02,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:02,828 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:02,829 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 21:25:02,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 21:25:02,829 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:02,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:02,829 INFO L85 PathProgramCache]: Analyzing trace with hash 534671915, now seen corresponding path program 4 times [2023-08-03 21:25:02,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:02,829 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984781691] [2023-08-03 21:25:02,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:02,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:02,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 21:25:02,934 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 21:25:02,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 21:25:02,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984781691] [2023-08-03 21:25:02,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984781691] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 21:25:02,935 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 21:25:02,935 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 21:25:02,935 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1788490722] [2023-08-03 21:25:02,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 21:25:02,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 21:25:02,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 21:25:02,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 21:25:02,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 21:25:03,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 349 [2023-08-03 21:25:03,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 108 transitions, 558 flow. Second operand has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:03,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 21:25:03,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 349 [2023-08-03 21:25:03,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 21:25:03,659 INFO L124 PetriNetUnfolderBase]: 4892/9515 cut-off events. [2023-08-03 21:25:03,659 INFO L125 PetriNetUnfolderBase]: For 11117/11233 co-relation queries the response was YES. [2023-08-03 21:25:03,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29241 conditions, 9515 events. 4892/9515 cut-off events. For 11117/11233 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 73536 event pairs, 1521 based on Foata normal form. 734/10003 useless extension candidates. Maximal degree in co-relation 15358. Up to 5315 conditions per place. [2023-08-03 21:25:03,704 INFO L140 encePairwiseOnDemand]: 329/349 looper letters, 126 selfloop transitions, 44 changer transitions 0/182 dead transitions. [2023-08-03 21:25:03,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 182 transitions, 1305 flow [2023-08-03 21:25:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 21:25:03,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 21:25:03,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 696 transitions. [2023-08-03 21:25:03,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498567335243553 [2023-08-03 21:25:03,707 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 696 transitions. [2023-08-03 21:25:03,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 696 transitions. [2023-08-03 21:25:03,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 21:25:03,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 696 transitions. [2023-08-03 21:25:03,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 174.0) internal successors, (696), 4 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:03,710 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:03,711 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 349.0) internal successors, (1745), 5 states have internal predecessors, (1745), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:03,711 INFO L175 Difference]: Start difference. First operand has 83 places, 108 transitions, 558 flow. Second operand 4 states and 696 transitions. [2023-08-03 21:25:03,711 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 182 transitions, 1305 flow [2023-08-03 21:25:03,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 182 transitions, 1304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 21:25:03,881 INFO L231 Difference]: Finished difference. Result has 86 places, 134 transitions, 902 flow [2023-08-03 21:25:03,881 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=902, PETRI_PLACES=86, PETRI_TRANSITIONS=134} [2023-08-03 21:25:03,882 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 12 predicate places. [2023-08-03 21:25:03,882 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 134 transitions, 902 flow [2023-08-03 21:25:03,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 152.2) internal successors, (761), 5 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 21:25:03,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 21:25:03,883 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] [2023-08-03 21:25:03,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 21:25:03,883 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-03 21:25:03,883 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 21:25:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -628514858, now seen corresponding path program 1 times [2023-08-03 21:25:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 21:25:03,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171451601] [2023-08-03 21:25:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 21:25:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 21:25:03,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:03,906 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 21:25:03,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 21:25:03,932 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 21:25:03,932 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 21:25:03,933 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-03 21:25:03,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 21:25:03,933 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1] [2023-08-03 21:25:03,933 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-03 21:25:03,935 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 21:25:03,935 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 21:25:03,998 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 09:25:03 BasicIcfg [2023-08-03 21:25:03,998 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 21:25:03,999 INFO L158 Benchmark]: Toolchain (without parser) took 20715.17ms. Allocated memory was 339.7MB in the beginning and 1.6GB in the end (delta: 1.3GB). Free memory was 295.0MB in the beginning and 1.4GB in the end (delta: -1.1GB). Peak memory consumption was 216.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:03,999 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 339.7MB. Free memory is still 293.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 21:25:03,999 INFO L158 Benchmark]: CACSL2BoogieTranslator took 551.40ms. Allocated memory is still 339.7MB. Free memory was 294.7MB in the beginning and 265.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-03 21:25:04,000 INFO L158 Benchmark]: Boogie Procedure Inliner took 50.66ms. Allocated memory is still 339.7MB. Free memory was 265.3MB in the beginning and 262.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:04,000 INFO L158 Benchmark]: Boogie Preprocessor took 23.90ms. Allocated memory is still 339.7MB. Free memory was 262.9MB in the beginning and 261.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 21:25:04,000 INFO L158 Benchmark]: RCFGBuilder took 640.47ms. Allocated memory was 339.7MB in the beginning and 509.6MB in the end (delta: 169.9MB). Free memory was 260.8MB in the beginning and 476.3MB in the end (delta: -215.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.0GB. [2023-08-03 21:25:04,000 INFO L158 Benchmark]: TraceAbstraction took 19443.94ms. Allocated memory was 509.6MB in the beginning and 1.6GB in the end (delta: 1.1GB). Free memory was 475.5MB in the beginning and 1.4GB in the end (delta: -907.5MB). Peak memory consumption was 223.9MB. Max. memory is 16.0GB. [2023-08-03 21:25:04,002 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 339.7MB. Free memory is still 293.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 551.40ms. Allocated memory is still 339.7MB. Free memory was 294.7MB in the beginning and 265.3MB in the end (delta: 29.4MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 50.66ms. Allocated memory is still 339.7MB. Free memory was 265.3MB in the beginning and 262.9MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 23.90ms. Allocated memory is still 339.7MB. Free memory was 262.9MB in the beginning and 261.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 640.47ms. Allocated memory was 339.7MB in the beginning and 509.6MB in the end (delta: 169.9MB). Free memory was 260.8MB in the beginning and 476.3MB in the end (delta: -215.5MB). Peak memory consumption was 23.6MB. Max. memory is 16.0GB. * TraceAbstraction took 19443.94ms. Allocated memory was 509.6MB in the beginning and 1.6GB in the end (delta: 1.1GB). Free memory was 475.5MB in the beginning and 1.4GB in the end (delta: -907.5MB). Peak memory consumption was 223.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 736]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [736] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 125 PlacesBefore, 39 PlacesAfterwards, 140 TransitionsBefore, 51 TransitionsAfterwards, 5332 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 57 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 108 TotalNumberOfCompositions, 11408 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5693, independent: 5366, independent conditional: 0, independent unconditional: 5366, dependent: 327, dependent conditional: 0, dependent unconditional: 327, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2763, independent: 2698, independent conditional: 0, independent unconditional: 2698, dependent: 65, dependent conditional: 0, dependent unconditional: 65, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5693, independent: 2668, independent conditional: 0, independent unconditional: 2668, dependent: 262, dependent conditional: 0, dependent unconditional: 262, unknown: 2763, unknown conditional: 0, unknown unconditional: 2763] , Statistics on independence cache: Total cache size (in pairs): 220, Positive cache size: 182, Positive conditional cache size: 0, Positive unconditional cache size: 182, Negative cache size: 38, Negative conditional cache size: 0, Negative unconditional cache size: 38, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 181 PlacesBefore, 74 PlacesAfterwards, 209 TransitionsBefore, 100 TransitionsAfterwards, 19716 CoEnabledTransitionPairs, 6 FixpointIterations, 33 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 2 ChoiceCompositions, 140 TotalNumberOfCompositions, 53799 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 18759, independent: 18169, independent conditional: 0, independent unconditional: 18169, dependent: 590, dependent conditional: 0, dependent unconditional: 590, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9277, independent: 9180, independent conditional: 0, independent unconditional: 9180, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 18759, independent: 8989, independent conditional: 0, independent unconditional: 8989, dependent: 493, dependent conditional: 0, dependent unconditional: 493, unknown: 9277, unknown conditional: 0, unknown unconditional: 9277] , Statistics on independence cache: Total cache size (in pairs): 905, Positive cache size: 847, Positive conditional cache size: 0, Positive unconditional cache size: 847, Negative cache size: 58, Negative conditional cache size: 0, Negative unconditional cache size: 58, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 181 PlacesBefore, 74 PlacesAfterwards, 209 TransitionsBefore, 100 TransitionsAfterwards, 19716 CoEnabledTransitionPairs, 7 FixpointIterations, 33 TrivialSequentialCompositions, 76 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 29 ConcurrentYvCompositions, 2 ChoiceCompositions, 140 TotalNumberOfCompositions, 60076 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19168, independent: 18484, independent conditional: 0, independent unconditional: 18484, dependent: 684, dependent conditional: 0, dependent unconditional: 684, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9204, independent: 9107, independent conditional: 0, independent unconditional: 9107, dependent: 97, dependent conditional: 0, dependent unconditional: 97, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19168, independent: 9377, independent conditional: 0, independent unconditional: 9377, dependent: 587, dependent conditional: 0, dependent unconditional: 587, unknown: 9204, unknown conditional: 0, unknown unconditional: 9204] , Statistics on independence cache: Total cache size (in pairs): 835, Positive cache size: 778, Positive conditional cache size: 0, Positive unconditional cache size: 778, Negative cache size: 57, Negative conditional cache size: 0, Negative unconditional cache size: 57, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 929]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L934] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L935] 0 int global; [L936] 0 pthread_mutex_t gm = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L945] 0 void (*f)() = good; [L946] 0 pthread_mutex_t fm = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L956] 0 pthread_t t_ids[2]; [L956] 0 int i=0; VAL [={-1:0}, __global_lock={3:0}, fm={5:0}, global=0, gm={4:0}, i=0, t_ids={6:0}] [L956] COND TRUE 0 i<2 [L956] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [={-1:0}, __global_lock={3:0}, fm={5:0}, global=0, gm={4:0}, i=0, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-2, t_ids={6:0}] [L956] 0 i++ VAL [={-1:0}, __global_lock={3:0}, fm={5:0}, global=0, gm={4:0}, i=1, t_ids={6:0}] [L956] COND TRUE 0 i<2 [L956] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [={-1:0}, __global_lock={3:0}, fm={5:0}, global=0, gm={4:0}, i=1, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, t_ids={6:0}] [L956] 0 i++ VAL [={-1:0}, __global_lock={3:0}, fm={5:0}, global=0, gm={4:0}, i=2, t_ids={6:0}] [L956] COND FALSE 0 !(i<2) [L958] 0 f = bad VAL [={-1:2}, __global_lock={3:0}, fm={5:0}, global=0, gm={4:0}, i=2, t_ids={6:0}] [L948] 1 void (*g)(); [L950] 1 g = f VAL [={-1:2}, ={-1:2}, __global_lock={3:0}, arg={0:0}, arg={0:0}, fm={5:0}, global=0, gm={4:0}] [L952] CALL 1 g() [L938] 1 (global)++ VAL [={-1:2}, __global_lock={3:0}, fm={5:0}, global=1, gm={4:0}] [L961] CALL 0 __VERIFIER_assert((global) == 0) [L929] COND TRUE 0 !(cond) [L929] 0 reach_error() VAL [={-1:2}, \old(cond)=0, __global_lock={3:0}, cond=0, fm={5:0}, global=1, gm={4:0}] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 177 locations, 2 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: 3.6s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=107occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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, 227 locations, 2 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: 5.0s, OverallIterations: 1, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 168 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 158 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 199 IncrementalHoareTripleChecker+Invalid, 204 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 1 mSDtfsCounter, 199 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=0, InterpolantAutomatonStates: 5, 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, 0.2s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 56 SizeOfPredicates, 0 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 11/16 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 1 thread instances CFG has 4 procedures, 227 locations, 2 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: 10.6s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 6.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 652 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 497 mSDsluCounter, 23 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8 mSDsCounter, 181 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1207 IncrementalHoareTripleChecker+Invalid, 1388 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 181 mSolverCounterUnsat, 15 mSDtfsCounter, 1207 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 24 SyntacticMatches, 2 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=902occurred in iteration=7, InterpolantAutomatonStates: 26, 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, 0.6s InterpolantComputationTime, 155 NumberOfCodeBlocks, 155 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 134 ConstructedInterpolants, 0 QuantifiedInterpolants, 389 SizeOfPredicates, 0 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 9 InterpolantComputations, 6 PerfectInterpolantSequences, 30/33 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 21:25:04,034 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...