/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 TOGETHER -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 15:17:46,494 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:17:46,528 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:17:46,531 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:17:46,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:17:46,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:17:46,532 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:17:46,545 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:17:46,546 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:17:46,546 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:17:46,547 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:17:46,547 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:17:46,547 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:17:46,547 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:17:46,548 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:17:46,548 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:17:46,548 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:17:46,548 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:17:46,548 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:17:46,549 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:17:46,549 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:17:46,549 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:17:46,550 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:17:46,550 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:17:46,550 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:17:46,550 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:17:46,550 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:17:46,551 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:17:46,551 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:17:46,551 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:17:46,551 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:17:46,552 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:17:46,552 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:17:46,552 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:17:46,552 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:17:46,553 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:17:46,553 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:17:46,553 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:17:46,553 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:17:46,553 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:17:46,554 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:17:46,554 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:17:46,729 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:17:46,752 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:17:46,753 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:17:46,754 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:17:46,754 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:17:46,755 INFO L431 ainManager$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 15:17:47,780 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:17:47,967 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:17:47,967 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 15:17:47,983 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d37c8f4/6c637e134011460b9c108f4f68bb4322/FLAGe788ac398 [2023-08-03 15:17:47,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/80d37c8f4/6c637e134011460b9c108f4f68bb4322 [2023-08-03 15:17:47,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:17:47,999 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:17:47,999 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:17:48,000 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:17:48,010 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:17:48,011 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:17:47" (1/1) ... [2023-08-03 15:17:48,012 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69be5c02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48, skipping insertion in model container [2023-08-03 15:17:48,012 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:17:47" (1/1) ... [2023-08-03 15:17:48,061 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:17:48,387 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 15:17:48,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:17:48,416 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:17:48,437 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:17:48,439 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 15:17:48,443 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [736] [2023-08-03 15:17:48,456 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 15:17:48,471 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:17:48,507 WARN L667 CHandler]: The function g is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:17:48,512 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:17:48,514 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48 WrapperNode [2023-08-03 15:17:48,514 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:17:48,515 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:17:48,515 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:17:48,515 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:17:48,520 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,546 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,570 INFO L138 Inliner]: procedures = 273, calls = 43, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 148 [2023-08-03 15:17:48,570 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:17:48,571 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:17:48,571 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:17:48,571 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:17:48,577 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,577 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,588 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,589 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,592 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,595 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,596 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,609 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,611 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:17:48,612 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:17:48,612 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:17:48,612 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:17:48,616 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (1/1) ... [2023-08-03 15:17:48,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:17:48,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:48,678 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 15:17:48,693 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 15:17:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:17:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:17:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:17:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:17:48,704 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 15:17:48,705 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:17:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 15:17:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 15:17:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:17:48,706 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:17:48,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:17:48,707 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 15:17:48,859 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:17:48,864 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:17:49,053 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:17:49,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:17:49,059 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-08-03 15:17:49,060 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:17:49 BoogieIcfgContainer [2023-08-03 15:17:49,060 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:17:49,062 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:17:49,062 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:17:49,064 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:17:49,064 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:17:47" (1/3) ... [2023-08-03 15:17:49,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c6097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:17:49, skipping insertion in model container [2023-08-03 15:17:49,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:17:48" (2/3) ... [2023-08-03 15:17:49,065 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@276c6097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:17:49, skipping insertion in model container [2023-08-03 15:17:49,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:17:49" (3/3) ... [2023-08-03 15:17:49,066 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_27-funptr_racing_bound2.i [2023-08-03 15:17:49,072 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:17:49,078 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:17:49,079 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 15:17:49,079 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:17:49,119 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 15:17:49,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 145 transitions, 298 flow [2023-08-03 15:17:49,184 INFO L124 PetriNetUnfolderBase]: 24/182 cut-off events. [2023-08-03 15:17:49,184 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:17:49,188 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 15:17:49,189 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 145 transitions, 298 flow [2023-08-03 15:17:49,192 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 140 transitions, 285 flow [2023-08-03 15:17:49,195 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:17:49,200 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 125 places, 140 transitions, 285 flow [2023-08-03 15:17:49,202 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 125 places, 140 transitions, 285 flow [2023-08-03 15:17:49,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 125 places, 140 transitions, 285 flow [2023-08-03 15:17:49,227 INFO L124 PetriNetUnfolderBase]: 23/177 cut-off events. [2023-08-03 15:17:49,228 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:49,229 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 15:17:49,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 5332 [2023-08-03 15:17:51,723 INFO L134 LiptonReduction]: Checked pairs total: 11408 [2023-08-03 15:17:51,723 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 15:17:51,733 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:51,736 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;@61a82ddb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:51,737 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 15:17:51,740 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:51,740 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-03 15:17:51,740 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:17:51,741 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:51,741 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:17:51,741 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:51,744 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:51,744 INFO L85 PathProgramCache]: Analyzing trace with hash -317765364, now seen corresponding path program 1 times [2023-08-03 15:17:51,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:51,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852611351] [2023-08-03 15:17:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:51,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:51,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:51,826 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:17:51,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:17:51,855 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:17:51,856 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:17:51,857 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 15:17:51,858 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 15:17:51,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:17:51,858 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 15:17:51,860 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:17:51,860 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:17:51,879 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 15:17:51,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 15:17:51,933 INFO L124 PetriNetUnfolderBase]: 45/307 cut-off events. [2023-08-03 15:17:51,933 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:17:51,936 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 15:17:51,936 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 15:17:51,938 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 209 transitions, 436 flow [2023-08-03 15:17:51,939 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:17:51,939 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 209 transitions, 436 flow [2023-08-03 15:17:51,939 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 209 transitions, 436 flow [2023-08-03 15:17:51,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 209 transitions, 436 flow [2023-08-03 15:17:51,965 INFO L124 PetriNetUnfolderBase]: 45/307 cut-off events. [2023-08-03 15:17:51,965 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 15:17:51,967 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 15:17:51,975 INFO L119 LiptonReduction]: Number of co-enabled transitions 19716 [2023-08-03 15:17:54,029 INFO L134 LiptonReduction]: Checked pairs total: 53799 [2023-08-03 15:17:54,029 INFO L136 LiptonReduction]: Total number of compositions: 140 [2023-08-03 15:17:54,031 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:17:54,032 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;@61a82ddb, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:17:54,032 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 15:17:54,033 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:17:54,033 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-03 15:17:54,034 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:17:54,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:54,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:54,034 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:54,034 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -1168505782, now seen corresponding path program 1 times [2023-08-03 15:17:54,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:54,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696267868] [2023-08-03 15:17:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:54,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:54,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:54,145 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 15:17:54,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:54,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696267868] [2023-08-03 15:17:54,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696267868] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:54,146 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:54,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:17:54,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012666281] [2023-08-03 15:17:54,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:54,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:54,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:54,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:54,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 349 [2023-08-03 15:17:54,176 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 15:17:54,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:54,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 349 [2023-08-03 15:17:54,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:55,064 INFO L124 PetriNetUnfolderBase]: 8909/14827 cut-off events. [2023-08-03 15:17:55,064 INFO L125 PetriNetUnfolderBase]: For 91/91 co-relation queries the response was YES. [2023-08-03 15:17:55,074 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 107506 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 15:17:55,103 INFO L140 encePairwiseOnDemand]: 319/349 looper letters, 66 selfloop transitions, 2 changer transitions 9/93 dead transitions. [2023-08-03 15:17:55,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 93 transitions, 356 flow [2023-08-03 15:17:55,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:55,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:55,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 629 transitions. [2023-08-03 15:17:55,112 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.600764087870105 [2023-08-03 15:17:55,113 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 629 transitions. [2023-08-03 15:17:55,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 629 transitions. [2023-08-03 15:17:55,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:55,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 629 transitions. [2023-08-03 15:17:55,118 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 15:17:55,121 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 15:17:55,121 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 15:17:55,122 INFO L175 Difference]: Start difference. First operand has 74 places, 100 transitions, 218 flow. Second operand 3 states and 629 transitions. [2023-08-03 15:17:55,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 93 transitions, 356 flow [2023-08-03 15:17:55,186 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 15:17:55,188 INFO L231 Difference]: Finished difference. Result has 76 places, 64 transitions, 150 flow [2023-08-03 15:17:55,189 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=150, PETRI_PLACES=76, PETRI_TRANSITIONS=64} [2023-08-03 15:17:55,191 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 2 predicate places. [2023-08-03 15:17:55,191 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 64 transitions, 150 flow [2023-08-03 15:17:55,192 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 15:17:55,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:55,192 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:17:55,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:17:55,192 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:55,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:55,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1519777946, now seen corresponding path program 1 times [2023-08-03 15:17:55,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:55,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746319264] [2023-08-03 15:17:55,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:55,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:55,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:55,262 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 15:17:55,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:55,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746319264] [2023-08-03 15:17:55,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746319264] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:55,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [167887432] [2023-08-03 15:17:55,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:55,263 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:55,263 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:55,266 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 15:17:55,273 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 15:17:55,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:55,340 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:17:55,341 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:55,381 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 15:17:55,381 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:17:55,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [167887432] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:55,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:17:55,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:17:55,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390185028] [2023-08-03 15:17:55,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:55,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:55,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:55,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:55,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:17:55,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 349 [2023-08-03 15:17:55,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 64 transitions, 150 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 15:17:55,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:55,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 349 [2023-08-03 15:17:55,397 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:55,925 INFO L124 PetriNetUnfolderBase]: 4599/7648 cut-off events. [2023-08-03 15:17:55,925 INFO L125 PetriNetUnfolderBase]: For 456/456 co-relation queries the response was YES. [2023-08-03 15:17:55,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15602 conditions, 7648 events. 4599/7648 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 52227 event pairs, 380 based on Foata normal form. 342/7704 useless extension candidates. Maximal degree in co-relation 1080. Up to 6346 conditions per place. [2023-08-03 15:17:55,955 INFO L140 encePairwiseOnDemand]: 345/349 looper letters, 102 selfloop transitions, 4 changer transitions 0/121 dead transitions. [2023-08-03 15:17:55,956 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 121 transitions, 474 flow [2023-08-03 15:17:55,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:17:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:17:55,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 957 transitions. [2023-08-03 15:17:55,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5484240687679083 [2023-08-03 15:17:55,958 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 957 transitions. [2023-08-03 15:17:55,958 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 957 transitions. [2023-08-03 15:17:55,959 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:55,959 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 957 transitions. [2023-08-03 15:17:55,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 191.4) internal successors, (957), 5 states have internal predecessors, (957), 0 states have call successors, (0), 0 states 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 15:17:55,963 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 15:17:55,963 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 15:17:55,963 INFO L175 Difference]: Start difference. First operand has 76 places, 64 transitions, 150 flow. Second operand 5 states and 957 transitions. [2023-08-03 15:17:55,964 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 121 transitions, 474 flow [2023-08-03 15:17:55,965 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 121 transitions, 471 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:17:55,966 INFO L231 Difference]: Finished difference. Result has 72 places, 64 transitions, 162 flow [2023-08-03 15:17:55,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=72, PETRI_TRANSITIONS=64} [2023-08-03 15:17:55,967 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -2 predicate places. [2023-08-03 15:17:55,967 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 64 transitions, 162 flow [2023-08-03 15:17:55,967 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 15:17:55,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:55,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:55,987 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 15:17:56,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:56,172 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:56,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:56,173 INFO L85 PathProgramCache]: Analyzing trace with hash 1962684684, now seen corresponding path program 1 times [2023-08-03 15:17:56,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:56,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580134688] [2023-08-03 15:17:56,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:56,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:56,211 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 15:17:56,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580134688] [2023-08-03 15:17:56,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [580134688] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:17:56,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [492801336] [2023-08-03 15:17:56,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:56,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:17:56,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:17:56,234 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 15:17:56,251 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 15:17:56,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:56,312 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:17:56,313 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:17:56,324 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 15:17:56,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 15:17:56,338 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 15:17:56,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [492801336] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 15:17:56,338 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 15:17:56,338 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 15:17:56,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224894092] [2023-08-03 15:17:56,338 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 15:17:56,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:56,339 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:56,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:56,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:17:56,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 349 [2023-08-03 15:17:56,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 64 transitions, 162 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 15:17:56,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:56,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 349 [2023-08-03 15:17:56,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:56,814 INFO L124 PetriNetUnfolderBase]: 4504/7458 cut-off events. [2023-08-03 15:17:56,814 INFO L125 PetriNetUnfolderBase]: For 2166/2166 co-relation queries the response was YES. [2023-08-03 15:17:56,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16251 conditions, 7458 events. 4504/7458 cut-off events. For 2166/2166 co-relation queries the response was YES. Maximal size of possible extension queue 273. Compared 50431 event pairs, 0 based on Foata normal form. 19/7215 useless extension candidates. Maximal degree in co-relation 1088. Up to 6157 conditions per place. [2023-08-03 15:17:56,835 INFO L140 encePairwiseOnDemand]: 346/349 looper letters, 102 selfloop transitions, 3 changer transitions 0/120 dead transitions. [2023-08-03 15:17:56,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 120 transitions, 480 flow [2023-08-03 15:17:56,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:17:56,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:17:56,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 786 transitions. [2023-08-03 15:17:56,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5630372492836676 [2023-08-03 15:17:56,837 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 786 transitions. [2023-08-03 15:17:56,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 786 transitions. [2023-08-03 15:17:56,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:56,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 786 transitions. [2023-08-03 15:17:56,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 196.5) internal successors, (786), 4 states have internal predecessors, (786), 0 states have call successors, (0), 0 states 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 15:17:56,841 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 15:17:56,841 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 15:17:56,841 INFO L175 Difference]: Start difference. First operand has 72 places, 64 transitions, 162 flow. Second operand 4 states and 786 transitions. [2023-08-03 15:17:56,841 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 120 transitions, 480 flow [2023-08-03 15:17:56,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 120 transitions, 475 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 15:17:56,846 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 155 flow [2023-08-03 15:17:56,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=155, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2023-08-03 15:17:56,848 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2023-08-03 15:17:56,848 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 155 flow [2023-08-03 15:17:56,849 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 15:17:56,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:56,849 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:17:56,867 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 15:17:57,069 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 15:17:57,070 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:57,073 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:57,073 INFO L85 PathProgramCache]: Analyzing trace with hash 429562831, now seen corresponding path program 1 times [2023-08-03 15:17:57,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:57,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1687942074] [2023-08-03 15:17:57,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:57,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:57,175 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 15:17:57,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:57,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1687942074] [2023-08-03 15:17:57,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1687942074] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:57,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:57,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 15:17:57,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672815524] [2023-08-03 15:17:57,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:57,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:57,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:57,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:57,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:57,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 349 [2023-08-03 15:17:57,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 155 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 15:17:57,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:57,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 349 [2023-08-03 15:17:57,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:57,594 INFO L124 PetriNetUnfolderBase]: 4607/7658 cut-off events. [2023-08-03 15:17:57,595 INFO L125 PetriNetUnfolderBase]: For 3381/3381 co-relation queries the response was YES. [2023-08-03 15:17:57,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16737 conditions, 7658 events. 4607/7658 cut-off events. For 3381/3381 co-relation queries the response was YES. Maximal size of possible extension queue 275. Compared 49335 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 15:17:57,616 INFO L140 encePairwiseOnDemand]: 343/349 looper letters, 70 selfloop transitions, 5 changer transitions 0/89 dead transitions. [2023-08-03 15:17:57,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 89 transitions, 379 flow [2023-08-03 15:17:57,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:57,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:57,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2023-08-03 15:17:57,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5463228271251194 [2023-08-03 15:17:57,617 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 572 transitions. [2023-08-03 15:17:57,617 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 572 transitions. [2023-08-03 15:17:57,618 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:57,618 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 572 transitions. [2023-08-03 15:17:57,619 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 15:17:57,620 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 15:17:57,620 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 15:17:57,620 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 155 flow. Second operand 3 states and 572 transitions. [2023-08-03 15:17:57,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 89 transitions, 379 flow [2023-08-03 15:17:57,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 89 transitions, 369 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 15:17:57,623 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 182 flow [2023-08-03 15:17:57,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=70, 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=73, PETRI_TRANSITIONS=67} [2023-08-03 15:17:57,625 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, -1 predicate places. [2023-08-03 15:17:57,625 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 182 flow [2023-08-03 15:17:57,625 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 15:17:57,625 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:57,625 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 15:17:57,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 15:17:57,625 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:57,625 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:57,626 INFO L85 PathProgramCache]: Analyzing trace with hash -996858691, now seen corresponding path program 1 times [2023-08-03 15:17:57,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:57,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723469874] [2023-08-03 15:17:57,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:57,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:57,681 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 15:17:57,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:57,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723469874] [2023-08-03 15:17:57,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723469874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:57,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:57,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:17:57,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137569739] [2023-08-03 15:17:57,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:57,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:17:57,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:57,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:17:57,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:17:57,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 349 [2023-08-03 15:17:57,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 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 15:17:57,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:57,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 349 [2023-08-03 15:17:57,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:58,167 INFO L124 PetriNetUnfolderBase]: 4762/8249 cut-off events. [2023-08-03 15:17:58,167 INFO L125 PetriNetUnfolderBase]: For 1897/1897 co-relation queries the response was YES. [2023-08-03 15:17:58,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17751 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 58559 event pairs, 1185 based on Foata normal form. 0/7990 useless extension candidates. Maximal degree in co-relation 16689. Up to 3695 conditions per place. [2023-08-03 15:17:58,189 INFO L140 encePairwiseOnDemand]: 345/349 looper letters, 134 selfloop transitions, 4 changer transitions 0/154 dead transitions. [2023-08-03 15:17:58,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 154 transitions, 675 flow [2023-08-03 15:17:58,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:17:58,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:17:58,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 986 transitions. [2023-08-03 15:17:58,191 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5650429799426934 [2023-08-03 15:17:58,191 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 986 transitions. [2023-08-03 15:17:58,191 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 986 transitions. [2023-08-03 15:17:58,192 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:58,192 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 986 transitions. [2023-08-03 15:17:58,193 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 15:17:58,195 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 15:17:58,196 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 15:17:58,196 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 182 flow. Second operand 5 states and 986 transitions. [2023-08-03 15:17:58,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 154 transitions, 675 flow [2023-08-03 15:17:58,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 154 transitions, 665 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:17:58,199 INFO L231 Difference]: Finished difference. Result has 79 places, 69 transitions, 201 flow [2023-08-03 15:17:58,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=72, 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=79, PETRI_TRANSITIONS=69} [2023-08-03 15:17:58,202 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 5 predicate places. [2023-08-03 15:17:58,203 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 69 transitions, 201 flow [2023-08-03 15:17:58,203 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 15:17:58,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:58,203 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 15:17:58,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:17:58,203 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:58,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:58,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1846198281, now seen corresponding path program 2 times [2023-08-03 15:17:58,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:58,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20246526] [2023-08-03 15:17:58,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:58,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:58,267 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 15:17:58,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:58,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [20246526] [2023-08-03 15:17:58,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [20246526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:58,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:58,267 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:17:58,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171810784] [2023-08-03 15:17:58,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:58,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:17:58,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:58,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:17:58,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:17:58,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 349 [2023-08-03 15:17:58,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 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 15:17:58,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:58,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 349 [2023-08-03 15:17:58,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:17:58,841 INFO L124 PetriNetUnfolderBase]: 6104/10065 cut-off events. [2023-08-03 15:17:58,841 INFO L125 PetriNetUnfolderBase]: For 3189/3218 co-relation queries the response was YES. [2023-08-03 15:17:58,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22744 conditions, 10065 events. 6104/10065 cut-off events. For 3189/3218 co-relation queries the response was YES. Maximal size of possible extension queue 402. Compared 69447 event pairs, 3651 based on Foata normal form. 125/9862 useless extension candidates. Maximal degree in co-relation 12004. Up to 7884 conditions per place. [2023-08-03 15:17:58,893 INFO L140 encePairwiseOnDemand]: 331/349 looper letters, 84 selfloop transitions, 18 changer transitions 0/117 dead transitions. [2023-08-03 15:17:58,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 117 transitions, 544 flow [2023-08-03 15:17:58,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:17:58,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:17:58,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 562 transitions. [2023-08-03 15:17:58,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367717287488061 [2023-08-03 15:17:58,895 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 562 transitions. [2023-08-03 15:17:58,895 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 562 transitions. [2023-08-03 15:17:58,896 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:17:58,896 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 562 transitions. [2023-08-03 15:17:58,897 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 15:17:58,898 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 15:17:58,898 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 15:17:58,898 INFO L175 Difference]: Start difference. First operand has 79 places, 69 transitions, 201 flow. Second operand 3 states and 562 transitions. [2023-08-03 15:17:58,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 117 transitions, 544 flow [2023-08-03 15:17:58,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 117 transitions, 541 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:17:58,916 INFO L231 Difference]: Finished difference. Result has 81 places, 84 transitions, 317 flow [2023-08-03 15:17:58,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=78, 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=81, PETRI_TRANSITIONS=84} [2023-08-03 15:17:58,917 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 7 predicate places. [2023-08-03 15:17:58,917 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 84 transitions, 317 flow [2023-08-03 15:17:58,917 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 15:17:58,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:17:58,918 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 15:17:58,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:17:58,918 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:17:58,918 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:17:58,918 INFO L85 PathProgramCache]: Analyzing trace with hash -873630893, now seen corresponding path program 3 times [2023-08-03 15:17:58,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:17:58,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411627794] [2023-08-03 15:17:58,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:17:58,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:17:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:17:59,015 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 15:17:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:17:59,015 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411627794] [2023-08-03 15:17:59,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411627794] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:17:59,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:17:59,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:17:59,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143816318] [2023-08-03 15:17:59,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:17:59,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:17:59,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:17:59,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:17:59,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:17:59,108 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 349 [2023-08-03 15:17:59,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 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 15:17:59,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:17:59,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 349 [2023-08-03 15:17:59,109 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:00,073 INFO L124 PetriNetUnfolderBase]: 9330/16453 cut-off events. [2023-08-03 15:18:00,073 INFO L125 PetriNetUnfolderBase]: For 10135/10230 co-relation queries the response was YES. [2023-08-03 15:18:00,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44005 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 129005 event pairs, 2770 based on Foata normal form. 1400/17516 useless extension candidates. Maximal degree in co-relation 23088. Up to 8573 conditions per place. [2023-08-03 15:18:00,174 INFO L140 encePairwiseOnDemand]: 326/349 looper letters, 95 selfloop transitions, 36 changer transitions 0/143 dead transitions. [2023-08-03 15:18:00,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 143 transitions, 827 flow [2023-08-03 15:18:00,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:18:00,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:18:00,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 696 transitions. [2023-08-03 15:18:00,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498567335243553 [2023-08-03 15:18:00,176 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 696 transitions. [2023-08-03 15:18:00,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 696 transitions. [2023-08-03 15:18:00,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:00,177 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 696 transitions. [2023-08-03 15:18:00,178 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 15:18:00,179 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 15:18:00,179 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 15:18:00,180 INFO L175 Difference]: Start difference. First operand has 81 places, 84 transitions, 317 flow. Second operand 4 states and 696 transitions. [2023-08-03 15:18:00,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 143 transitions, 827 flow [2023-08-03 15:18:00,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 143 transitions, 793 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:00,215 INFO L231 Difference]: Finished difference. Result has 84 places, 108 transitions, 558 flow [2023-08-03 15:18:00,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=299, PETRI_DIFFERENCE_MINUEND_PLACES=80, 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=84, PETRI_TRANSITIONS=108} [2023-08-03 15:18:00,215 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 10 predicate places. [2023-08-03 15:18:00,215 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 108 transitions, 558 flow [2023-08-03 15:18:00,216 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 15:18:00,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:00,216 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 15:18:00,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:18:00,216 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:00,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:00,216 INFO L85 PathProgramCache]: Analyzing trace with hash -85866189, now seen corresponding path program 4 times [2023-08-03 15:18:00,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:00,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44618093] [2023-08-03 15:18:00,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:00,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:18:00,312 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 15:18:00,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:18:00,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44618093] [2023-08-03 15:18:00,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44618093] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:18:00,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:18:00,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:18:00,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873183192] [2023-08-03 15:18:00,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:18:00,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:18:00,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:18:00,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:18:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:18:00,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 149 out of 349 [2023-08-03 15:18:00,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 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 15:18:00,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:18:00,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 149 of 349 [2023-08-03 15:18:00,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:18:00,968 INFO L124 PetriNetUnfolderBase]: 4892/9515 cut-off events. [2023-08-03 15:18:00,968 INFO L125 PetriNetUnfolderBase]: For 11111/11230 co-relation queries the response was YES. [2023-08-03 15:18:00,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29520 conditions, 9515 events. 4892/9515 cut-off events. For 11111/11230 co-relation queries the response was YES. Maximal size of possible extension queue 351. Compared 73502 event pairs, 1521 based on Foata normal form. 734/10003 useless extension candidates. Maximal degree in co-relation 15445. Up to 5315 conditions per place. [2023-08-03 15:18:01,018 INFO L140 encePairwiseOnDemand]: 329/349 looper letters, 126 selfloop transitions, 44 changer transitions 0/182 dead transitions. [2023-08-03 15:18:01,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 182 transitions, 1306 flow [2023-08-03 15:18:01,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:18:01,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:18:01,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 696 transitions. [2023-08-03 15:18:01,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.498567335243553 [2023-08-03 15:18:01,020 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 696 transitions. [2023-08-03 15:18:01,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 696 transitions. [2023-08-03 15:18:01,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:18:01,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 696 transitions. [2023-08-03 15:18:01,022 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 15:18:01,023 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 15:18:01,023 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 15:18:01,023 INFO L175 Difference]: Start difference. First operand has 84 places, 108 transitions, 558 flow. Second operand 4 states and 696 transitions. [2023-08-03 15:18:01,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 182 transitions, 1306 flow [2023-08-03 15:18:01,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 182 transitions, 1305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:18:01,042 INFO L231 Difference]: Finished difference. Result has 87 places, 134 transitions, 902 flow [2023-08-03 15:18:01,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=349, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=83, 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=87, PETRI_TRANSITIONS=134} [2023-08-03 15:18:01,044 INFO L281 CegarLoopForPetriNet]: 74 programPoint places, 13 predicate places. [2023-08-03 15:18:01,044 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 134 transitions, 902 flow [2023-08-03 15:18:01,046 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 15:18:01,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:18:01,046 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 15:18:01,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 15:18:01,046 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 15:18:01,046 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:18:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1721548152, now seen corresponding path program 1 times [2023-08-03 15:18:01,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:18:01,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99780903] [2023-08-03 15:18:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:18:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:18:01,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:18:01,067 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:18:01,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:18:01,090 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:18:01,090 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:18:01,090 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 15:18:01,090 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 15:18:01,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:18:01,091 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1] [2023-08-03 15:18:01,093 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:18:01,093 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:18:01,143 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:18:01 BasicIcfg [2023-08-03 15:18:01,144 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:18:01,144 INFO L158 Benchmark]: Toolchain (without parser) took 13145.46ms. Allocated memory was 327.2MB in the beginning and 1.3GB in the end (delta: 964.7MB). Free memory was 280.2MB in the beginning and 704.4MB in the end (delta: -424.2MB). Peak memory consumption was 542.7MB. Max. memory is 16.0GB. [2023-08-03 15:18:01,144 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 327.2MB. Free memory is still 282.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:18:01,144 INFO L158 Benchmark]: CACSL2BoogieTranslator took 514.91ms. Allocated memory is still 327.2MB. Free memory was 280.2MB in the beginning and 250.6MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-03 15:18:01,145 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.39ms. Allocated memory is still 327.2MB. Free memory was 250.6MB in the beginning and 248.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:18:01,145 INFO L158 Benchmark]: Boogie Preprocessor took 40.78ms. Allocated memory is still 327.2MB. Free memory was 248.0MB in the beginning and 246.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:18:01,145 INFO L158 Benchmark]: RCFGBuilder took 448.45ms. Allocated memory was 327.2MB in the beginning and 425.7MB in the end (delta: 98.6MB). Free memory was 246.4MB in the beginning and 387.9MB in the end (delta: -141.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. [2023-08-03 15:18:01,145 INFO L158 Benchmark]: TraceAbstraction took 12081.93ms. Allocated memory was 425.7MB in the beginning and 1.3GB in the end (delta: 866.1MB). Free memory was 387.0MB in the beginning and 704.4MB in the end (delta: -317.4MB). Peak memory consumption was 549.8MB. Max. memory is 16.0GB. [2023-08-03 15:18:01,146 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 327.2MB. Free memory is still 282.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 514.91ms. Allocated memory is still 327.2MB. Free memory was 280.2MB in the beginning and 250.6MB in the end (delta: 29.6MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.39ms. Allocated memory is still 327.2MB. Free memory was 250.6MB in the beginning and 248.0MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 40.78ms. Allocated memory is still 327.2MB. Free memory was 248.0MB in the beginning and 246.4MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 448.45ms. Allocated memory was 327.2MB in the beginning and 425.7MB in the end (delta: 98.6MB). Free memory was 246.4MB in the beginning and 387.9MB in the end (delta: -141.5MB). Peak memory consumption was 15.9MB. Max. memory is 16.0GB. * TraceAbstraction took 12081.93ms. Allocated memory was 425.7MB in the beginning and 1.3GB in the end (delta: 866.1MB). Free memory was 387.0MB in the beginning and 704.4MB in the end (delta: -317.4MB). Peak memory consumption was 549.8MB. 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: 2.5s, 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: 2.1s, 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 - 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}] - UnprovableResult [Line: 956]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data 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: 2.7s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.6s, 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, 0.0s 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 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: 9.2s, OverallIterations: 9, TraceHistogramMax: 3, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 5.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 815 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 587 mSDsluCounter, 57 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 142 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1624 IncrementalHoareTripleChecker+Invalid, 1766 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 142 mSolverCounterUnsat, 44 mSDtfsCounter, 1624 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 55 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=902occurred in iteration=8, InterpolantAutomatonStates: 31, 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, 177 NumberOfCodeBlocks, 177 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 154 ConstructedInterpolants, 0 QuantifiedInterpolants, 445 SizeOfPredicates, 0 NumberOfNonLiveVariables, 287 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 11 InterpolantComputations, 7 PerfectInterpolantSequences, 41/49 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 15:18:01,172 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...