/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:06:46,689 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:06:46,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:06:46,737 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:06:46,737 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:06:46,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:06:46,738 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:06:46,755 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:06:46,756 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:06:46,756 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:06:46,757 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:06:46,757 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:06:46,757 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:06:46,758 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:06:46,758 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:06:46,758 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:06:46,759 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:06:46,759 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:06:46,759 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:06:46,760 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:06:46,760 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:06:46,760 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:06:46,761 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:06:46,761 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:06:46,761 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:06:46,762 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:06:46,762 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:06:46,762 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:06:46,762 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:06:46,763 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:06:46,763 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:06:46,763 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:06:46,764 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:06:46,764 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:06:46,764 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:06:46,764 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:06:46,765 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:06:46,765 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:06:46,765 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:06:46,765 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:06:46,766 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:06:46,771 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:06:46,983 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:06:47,007 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:06:47,009 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:06:47,010 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:06:47,010 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:06:47,011 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 01:06:48,112 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:06:48,287 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:06:48,287 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 01:06:48,301 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e288d927/5d6b78fb49a945c1b4feace611ab9ceb/FLAGee2fb6d0f [2023-08-04 01:06:48,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e288d927/5d6b78fb49a945c1b4feace611ab9ceb [2023-08-04 01:06:48,317 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:06:48,318 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:06:48,319 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:06:48,319 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:06:48,326 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:06:48,327 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,328 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1db5c057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48, skipping insertion in model container [2023-08-04 01:06:48,328 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,381 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:06:48,543 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-04 01:06:48,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:06:48,696 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:06:48,711 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-04 01:06:48,729 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 01:06:48,739 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 01:06:48,788 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:06:48,813 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:06:48,813 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 01:06:48,817 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:06:48,818 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48 WrapperNode [2023-08-04 01:06:48,818 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:06:48,819 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:06:48,819 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:06:48,819 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:06:48,824 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,866 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-08-04 01:06:48,866 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:06:48,867 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:06:48,867 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:06:48,867 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:06:48,874 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,878 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,878 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,884 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,887 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,889 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,890 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,892 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:06:48,893 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:06:48,893 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:06:48,893 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:06:48,894 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (1/1) ... [2023-08-04 01:06:48,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:06:48,910 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:06:48,920 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 01:06:48,935 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 01:06:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:06:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 01:06:48,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:06:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:06:48,967 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:06:48,968 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 01:06:48,968 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 01:06:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 01:06:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 01:06:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:06:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 01:06:48,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:06:48,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:06:48,971 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 01:06:49,075 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:06:49,077 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:06:49,328 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:06:49,444 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:06:49,444 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 01:06:49,446 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:06:49 BoogieIcfgContainer [2023-08-04 01:06:49,446 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:06:49,448 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:06:49,448 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:06:49,450 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:06:49,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:06:48" (1/3) ... [2023-08-04 01:06:49,451 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bca729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:06:49, skipping insertion in model container [2023-08-04 01:06:49,451 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:06:48" (2/3) ... [2023-08-04 01:06:49,452 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33bca729 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:06:49, skipping insertion in model container [2023-08-04 01:06:49,452 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:06:49" (3/3) ... [2023-08-04 01:06:49,453 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 01:06:49,459 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:06:49,467 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:06:49,467 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 01:06:49,467 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:06:49,505 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:06:49,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 01:06:49,606 INFO L124 PetriNetUnfolderBase]: 14/215 cut-off events. [2023-08-04 01:06:49,606 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:06:49,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 14/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 595 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2023-08-04 01:06:49,611 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 01:06:49,614 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 156 flow [2023-08-04 01:06:49,616 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:06:49,623 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 73 transitions, 156 flow [2023-08-04 01:06:49,625 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 73 transitions, 156 flow [2023-08-04 01:06:49,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 156 flow [2023-08-04 01:06:49,656 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-08-04 01:06:49,656 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:06:49,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-04 01:06:49,657 INFO L119 LiptonReduction]: Number of co-enabled transitions 652 [2023-08-04 01:06:51,857 INFO L134 LiptonReduction]: Checked pairs total: 1541 [2023-08-04 01:06:51,857 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 01:06:51,869 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:06:51,874 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;@45db0f6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:06:51,874 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 01:06:51,879 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:06:51,879 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 01:06:51,879 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:06:51,880 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:51,880 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 01:06:51,881 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:06:51,885 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash 409160255, now seen corresponding path program 1 times [2023-08-04 01:06:51,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:51,891 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279602227] [2023-08-04 01:06:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:51,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:52,071 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 01:06:52,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:06:52,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279602227] [2023-08-04 01:06:52,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279602227] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:06:52,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:06:52,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:06:52,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859416087] [2023-08-04 01:06:52,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:06:52,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:06:52,085 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:06:52,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:06:52,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:06:52,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 160 [2023-08-04 01:06:52,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:52,122 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:06:52,122 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 160 [2023-08-04 01:06:52,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:06:52,192 INFO L124 PetriNetUnfolderBase]: 59/142 cut-off events. [2023-08-04 01:06:52,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:06:52,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 142 events. 59/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 527 event pairs, 15 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 267. Up to 115 conditions per place. [2023-08-04 01:06:52,196 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 17 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-04 01:06:52,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 94 flow [2023-08-04 01:06:52,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:06:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:06:52,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-04 01:06:52,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604166666666667 [2023-08-04 01:06:52,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-04 01:06:52,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-04 01:06:52,228 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:06:52,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-04 01:06:52,233 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:52,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:52,237 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:52,238 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 46 flow. Second operand 3 states and 269 transitions. [2023-08-04 01:06:52,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 94 flow [2023-08-04 01:06:52,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 01:06:52,242 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 54 flow [2023-08-04 01:06:52,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-04 01:06:52,246 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-04 01:06:52,246 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 54 flow [2023-08-04 01:06:52,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:52,247 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:52,247 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:06:52,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:06:52,247 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:06:52,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:52,252 INFO L85 PathProgramCache]: Analyzing trace with hash -213929901, now seen corresponding path program 1 times [2023-08-04 01:06:52,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:52,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940159612] [2023-08-04 01:06:52,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:52,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:52,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:06:52,274 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:06:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:06:52,309 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:06:52,309 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:06:52,311 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 01:06:52,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 01:06:52,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 01:06:52,316 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 01:06:52,318 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (1/2) [2023-08-04 01:06:52,319 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:06:52,319 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:06:52,345 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 01:06:52,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:52,412 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-04 01:06:52,412 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:06:52,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-04 01:06:52,415 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:52,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 98 places, 90 transitions, 204 flow [2023-08-04 01:06:52,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:06:52,417 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 98 places, 90 transitions, 204 flow [2023-08-04 01:06:52,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 98 places, 90 transitions, 204 flow [2023-08-04 01:06:52,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 98 places, 90 transitions, 204 flow [2023-08-04 01:06:52,443 INFO L124 PetriNetUnfolderBase]: 3/202 cut-off events. [2023-08-04 01:06:52,444 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:06:52,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235 conditions, 202 events. 3/202 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 497 event pairs, 0 based on Foata normal form. 0/194 useless extension candidates. Maximal degree in co-relation 161. Up to 9 conditions per place. [2023-08-04 01:06:52,447 INFO L119 LiptonReduction]: Number of co-enabled transitions 1816 [2023-08-04 01:06:54,749 INFO L134 LiptonReduction]: Checked pairs total: 6060 [2023-08-04 01:06:54,750 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-04 01:06:54,751 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:06:54,752 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;@45db0f6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:06:54,753 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 01:06:54,757 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:06:54,757 INFO L124 PetriNetUnfolderBase]: 0/36 cut-off events. [2023-08-04 01:06:54,757 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 01:06:54,757 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:54,757 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2023-08-04 01:06:54,758 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:06:54,758 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:54,758 INFO L85 PathProgramCache]: Analyzing trace with hash -1311462185, now seen corresponding path program 1 times [2023-08-04 01:06:54,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:54,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676572711] [2023-08-04 01:06:54,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:54,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:54,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:54,825 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:06:54,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:06:54,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676572711] [2023-08-04 01:06:54,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676572711] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:06:54,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:06:54,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:06:54,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825091887] [2023-08-04 01:06:54,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:06:54,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:06:54,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:06:54,827 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:06:54,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:06:54,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 182 [2023-08-04 01:06:54,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 31 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:54,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:06:54,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 182 [2023-08-04 01:06:54,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:06:55,381 INFO L124 PetriNetUnfolderBase]: 3082/4896 cut-off events. [2023-08-04 01:06:55,381 INFO L125 PetriNetUnfolderBase]: For 445/445 co-relation queries the response was YES. [2023-08-04 01:06:55,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9903 conditions, 4896 events. 3082/4896 cut-off events. For 445/445 co-relation queries the response was YES. Maximal size of possible extension queue 263. Compared 29741 event pairs, 2030 based on Foata normal form. 0/4350 useless extension candidates. Maximal degree in co-relation 2226. Up to 4398 conditions per place. [2023-08-04 01:06:55,412 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 27 selfloop transitions, 2 changer transitions 0/37 dead transitions. [2023-08-04 01:06:55,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 156 flow [2023-08-04 01:06:55,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:06:55,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:06:55,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 312 transitions. [2023-08-04 01:06:55,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2023-08-04 01:06:55,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 312 transitions. [2023-08-04 01:06:55,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 312 transitions. [2023-08-04 01:06:55,415 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:06:55,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 312 transitions. [2023-08-04 01:06:55,416 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:55,417 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:55,418 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:55,418 INFO L175 Difference]: Start difference. First operand has 40 places, 31 transitions, 86 flow. Second operand 3 states and 312 transitions. [2023-08-04 01:06:55,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 156 flow [2023-08-04 01:06:55,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 37 transitions, 152 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 01:06:55,421 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 94 flow [2023-08-04 01:06:55,421 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2023-08-04 01:06:55,422 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-04 01:06:55,422 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 94 flow [2023-08-04 01:06:55,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.66666666666667) internal successors, (287), 3 states have internal predecessors, (287), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:55,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:55,422 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:06:55,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 01:06:55,423 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:06:55,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:55,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1730215821, now seen corresponding path program 1 times [2023-08-04 01:06:55,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:55,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100284140] [2023-08-04 01:06:55,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:55,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:55,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:06:55,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:06:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100284140] [2023-08-04 01:06:55,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100284140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:06:55,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115107487] [2023-08-04 01:06:55,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:55,490 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:06:55,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:06:55,493 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:06:55,522 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 01:06:55,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:55,598 INFO L262 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:06:55,599 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:06:55,643 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:06:55,644 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:06:55,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115107487] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:06:55,645 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:06:55,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:06:55,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373757514] [2023-08-04 01:06:55,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:06:55,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:06:55,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:06:55,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:06:55,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:06:55,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 01:06:55,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 94 flow. Second operand has 5 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:55,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:06:55,670 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 01:06:55,670 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:06:56,197 INFO L124 PetriNetUnfolderBase]: 3042/4861 cut-off events. [2023-08-04 01:06:56,197 INFO L125 PetriNetUnfolderBase]: For 335/335 co-relation queries the response was YES. [2023-08-04 01:06:56,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9801 conditions, 4861 events. 3042/4861 cut-off events. For 335/335 co-relation queries the response was YES. Maximal size of possible extension queue 262. Compared 30024 event pairs, 1170 based on Foata normal form. 25/4380 useless extension candidates. Maximal degree in co-relation 2570. Up to 4269 conditions per place. [2023-08-04 01:06:56,230 INFO L140 encePairwiseOnDemand]: 178/182 looper letters, 34 selfloop transitions, 4 changer transitions 0/45 dead transitions. [2023-08-04 01:06:56,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 196 flow [2023-08-04 01:06:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 01:06:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 01:06:56,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 504 transitions. [2023-08-04 01:06:56,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5538461538461539 [2023-08-04 01:06:56,233 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 504 transitions. [2023-08-04 01:06:56,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 504 transitions. [2023-08-04 01:06:56,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:06:56,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 504 transitions. [2023-08-04 01:06:56,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 100.8) internal successors, (504), 5 states have internal predecessors, (504), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:56,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:56,238 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 182.0) internal successors, (1092), 6 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:56,238 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 94 flow. Second operand 5 states and 504 transitions. [2023-08-04 01:06:56,238 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 196 flow [2023-08-04 01:06:56,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 45 transitions, 193 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 01:06:56,240 INFO L231 Difference]: Finished difference. Result has 46 places, 32 transitions, 108 flow [2023-08-04 01:06:56,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=108, PETRI_PLACES=46, PETRI_TRANSITIONS=32} [2023-08-04 01:06:56,242 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 6 predicate places. [2023-08-04 01:06:56,242 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 32 transitions, 108 flow [2023-08-04 01:06:56,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 94.6) internal successors, (473), 5 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:56,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:56,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:06:56,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 01:06:56,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:06:56,454 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:06:56,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:56,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1110522721, now seen corresponding path program 1 times [2023-08-04 01:06:56,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:56,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161071253] [2023-08-04 01:06:56,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:56,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:56,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:56,512 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:06:56,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:06:56,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161071253] [2023-08-04 01:06:56,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161071253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:06:56,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1088052425] [2023-08-04 01:06:56,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:56,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:06:56,513 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:06:56,517 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 01:06:56,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 01:06:56,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:56,603 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 01:06:56,604 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:06:56,619 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:06:56,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 01:06:56,658 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 01:06:56,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1088052425] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 01:06:56,658 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 01:06:56,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 01:06:56,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236653326] [2023-08-04 01:06:56,659 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 01:06:56,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:06:56,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:06:56,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:06:56,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 01:06:56,675 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 182 [2023-08-04 01:06:56,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 32 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:56,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:06:56,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 182 [2023-08-04 01:06:56,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:06:57,112 INFO L124 PetriNetUnfolderBase]: 2683/4212 cut-off events. [2023-08-04 01:06:57,113 INFO L125 PetriNetUnfolderBase]: For 430/430 co-relation queries the response was YES. [2023-08-04 01:06:57,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8581 conditions, 4212 events. 2683/4212 cut-off events. For 430/430 co-relation queries the response was YES. Maximal size of possible extension queue 242. Compared 24594 event pairs, 975 based on Foata normal form. 5/3757 useless extension candidates. Maximal degree in co-relation 2211. Up to 3706 conditions per place. [2023-08-04 01:06:57,141 INFO L140 encePairwiseOnDemand]: 179/182 looper letters, 34 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-04 01:06:57,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 44 transitions, 202 flow [2023-08-04 01:06:57,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:06:57,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:06:57,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2023-08-04 01:06:57,143 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631868131868132 [2023-08-04 01:06:57,143 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 410 transitions. [2023-08-04 01:06:57,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 410 transitions. [2023-08-04 01:06:57,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:06:57,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 410 transitions. [2023-08-04 01:06:57,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,146 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,147 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,147 INFO L175 Difference]: Start difference. First operand has 46 places, 32 transitions, 108 flow. Second operand 4 states and 410 transitions. [2023-08-04 01:06:57,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 44 transitions, 202 flow [2023-08-04 01:06:57,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 44 transitions, 197 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 01:06:57,150 INFO L231 Difference]: Finished difference. Result has 47 places, 31 transitions, 101 flow [2023-08-04 01:06:57,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=95, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=101, PETRI_PLACES=47, PETRI_TRANSITIONS=31} [2023-08-04 01:06:57,152 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2023-08-04 01:06:57,152 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 31 transitions, 101 flow [2023-08-04 01:06:57,153 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.4) internal successors, (477), 5 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,153 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:06:57,153 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:06:57,161 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 01:06:57,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:06:57,361 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 01:06:57,362 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:06:57,362 INFO L85 PathProgramCache]: Analyzing trace with hash -1307301972, now seen corresponding path program 1 times [2023-08-04 01:06:57,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:06:57,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634517695] [2023-08-04 01:06:57,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:06:57,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:06:57,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:06:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 01:06:57,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:06:57,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634517695] [2023-08-04 01:06:57,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634517695] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:06:57,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:06:57,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 01:06:57,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146192455] [2023-08-04 01:06:57,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:06:57,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 01:06:57,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:06:57,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 01:06:57,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 01:06:57,444 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 182 [2023-08-04 01:06:57,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 31 transitions, 101 flow. Second operand has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:06:57,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 182 [2023-08-04 01:06:57,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:06:57,749 INFO L124 PetriNetUnfolderBase]: 1443/2403 cut-off events. [2023-08-04 01:06:57,750 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-04 01:06:57,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5062 conditions, 2403 events. 1443/2403 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 13276 event pairs, 68 based on Foata normal form. 400/2503 useless extension candidates. Maximal degree in co-relation 1873. Up to 1675 conditions per place. [2023-08-04 01:06:57,756 INFO L140 encePairwiseOnDemand]: 180/182 looper letters, 0 selfloop transitions, 0 changer transitions 49/49 dead transitions. [2023-08-04 01:06:57,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 49 transitions, 221 flow [2023-08-04 01:06:57,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 01:06:57,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 01:06:57,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 419 transitions. [2023-08-04 01:06:57,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5755494505494505 [2023-08-04 01:06:57,757 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 419 transitions. [2023-08-04 01:06:57,758 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 419 transitions. [2023-08-04 01:06:57,758 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:06:57,758 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 419 transitions. [2023-08-04 01:06:57,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,761 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 182.0) internal successors, (910), 5 states have internal predecessors, (910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,761 INFO L175 Difference]: Start difference. First operand has 47 places, 31 transitions, 101 flow. Second operand 4 states and 419 transitions. [2023-08-04 01:06:57,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 49 transitions, 221 flow [2023-08-04 01:06:57,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 49 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 01:06:57,765 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2023-08-04 01:06:57,765 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=182, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2023-08-04 01:06:57,766 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 5 predicate places. [2023-08-04 01:06:57,766 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2023-08-04 01:06:57,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 96.5) internal successors, (386), 4 states have internal predecessors, (386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:06:57,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 01:06:57,766 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 01:06:57,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 01:06:57,767 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 01:06:57,767 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE (1/2) [2023-08-04 01:06:57,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:57,801 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-04 01:06:57,801 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:06:57,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-04 01:06:57,802 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:57,803 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:57,803 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:06:57,803 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:57,803 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:57,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 01:06:57,835 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-04 01:06:57,835 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 01:06:57,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-04 01:06:57,841 INFO L119 LiptonReduction]: Number of co-enabled transitions 3436 [2023-08-04 01:07:00,642 INFO L134 LiptonReduction]: Checked pairs total: 10513 [2023-08-04 01:07:00,642 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-04 01:07:00,643 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 01:07:00,644 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;@45db0f6e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:07:00,644 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 01:07:00,646 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:07:00,646 INFO L124 PetriNetUnfolderBase]: 1/10 cut-off events. [2023-08-04 01:07:00,646 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:07:00,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:07:00,646 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 01:07:00,646 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:07:00,646 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:07:00,647 INFO L85 PathProgramCache]: Analyzing trace with hash 22140215, now seen corresponding path program 1 times [2023-08-04 01:07:00,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:07:00,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700050206] [2023-08-04 01:07:00,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:07:00,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:07:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:07:00,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:07:00,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:07:00,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700050206] [2023-08-04 01:07:00,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700050206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:07:00,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:07:00,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 01:07:00,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10052312] [2023-08-04 01:07:00,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:07:00,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:07:00,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:07:00,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:07:00,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:07:00,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-08-04 01:07:00,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:00,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:07:00,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-08-04 01:07:00,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:07:02,583 INFO L124 PetriNetUnfolderBase]: 13202/19657 cut-off events. [2023-08-04 01:07:02,584 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-08-04 01:07:02,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38433 conditions, 19657 events. 13202/19657 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 794. Compared 130498 event pairs, 2594 based on Foata normal form. 567/17305 useless extension candidates. Maximal degree in co-relation 32700. Up to 17103 conditions per place. [2023-08-04 01:07:02,662 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 49 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-04 01:07:02,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 261 flow [2023-08-04 01:07:02,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:07:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:07:02,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-04 01:07:02,664 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534290271132376 [2023-08-04 01:07:02,664 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-04 01:07:02,664 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-04 01:07:02,664 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:07:02,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-04 01:07:02,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:02,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:02,666 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:02,666 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 102 flow. Second operand 3 states and 347 transitions. [2023-08-04 01:07:02,666 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 261 flow [2023-08-04 01:07:02,667 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 257 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 01:07:02,668 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 117 flow [2023-08-04 01:07:02,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-04 01:07:02,669 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-04 01:07:02,669 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 117 flow [2023-08-04 01:07:02,669 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:02,669 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:07:02,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 01:07:02,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 01:07:02,670 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:07:02,670 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:07:02,670 INFO L85 PathProgramCache]: Analyzing trace with hash -191859695, now seen corresponding path program 1 times [2023-08-04 01:07:02,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:07:02,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334939917] [2023-08-04 01:07:02,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:07:02,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:07:02,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:07:02,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 01:07:02,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:07:02,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334939917] [2023-08-04 01:07:02,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334939917] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:07:02,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 01:07:02,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 01:07:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754130929] [2023-08-04 01:07:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:07:02,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 01:07:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:07:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 01:07:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 01:07:02,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2023-08-04 01:07:02,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:02,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:07:02,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2023-08-04 01:07:02,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 01:07:04,331 INFO L124 PetriNetUnfolderBase]: 12974/19241 cut-off events. [2023-08-04 01:07:04,331 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2023-08-04 01:07:04,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41090 conditions, 19241 events. 12974/19241 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 124618 event pairs, 9730 based on Foata normal form. 0/16332 useless extension candidates. Maximal degree in co-relation 26603. Up to 17937 conditions per place. [2023-08-04 01:07:04,410 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 35 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-04 01:07:04,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 204 flow [2023-08-04 01:07:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 01:07:04,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 01:07:04,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-04 01:07:04,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2023-08-04 01:07:04,411 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-04 01:07:04,411 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-04 01:07:04,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 01:07:04,412 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-04 01:07:04,412 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:04,413 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:04,414 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:04,414 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 117 flow. Second operand 3 states and 318 transitions. [2023-08-04 01:07:04,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 204 flow [2023-08-04 01:07:04,414 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 01:07:04,415 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 126 flow [2023-08-04 01:07:04,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-04 01:07:04,416 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-04 01:07:04,416 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 126 flow [2023-08-04 01:07:04,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 01:07:04,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:07:04,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 01:07:04,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 01:07:04,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 01:07:04,417 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:07:04,417 INFO L85 PathProgramCache]: Analyzing trace with hash 424969770, now seen corresponding path program 1 times [2023-08-04 01:07:04,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:07:04,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976009260] [2023-08-04 01:07:04,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:07:04,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:07:04,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:07:04,427 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:07:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:07:04,439 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:07:04,439 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:07:04,439 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 01:07:04,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 01:07:04,439 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 01:07:04,440 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 01:07:04,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 01:07:04,440 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 01:07:04,440 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 01:07:04,443 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 01:07:04,443 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 01:07:04,575 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 01:07:04 BasicIcfg [2023-08-04 01:07:04,576 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 01:07:04,576 INFO L158 Benchmark]: Toolchain (without parser) took 16257.67ms. Allocated memory was 350.2MB in the beginning and 1.3GB in the end (delta: 920.6MB). Free memory was 300.0MB in the beginning and 1.0GB in the end (delta: -745.7MB). Peak memory consumption was 325.2MB. Max. memory is 16.0GB. [2023-08-04 01:07:04,577 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 303.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 01:07:04,577 INFO L158 Benchmark]: CACSL2BoogieTranslator took 498.87ms. Allocated memory is still 350.2MB. Free memory was 299.6MB in the beginning and 276.9MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 01:07:04,577 INFO L158 Benchmark]: Boogie Procedure Inliner took 47.55ms. Allocated memory is still 350.2MB. Free memory was 276.9MB in the beginning and 274.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:07:04,577 INFO L158 Benchmark]: Boogie Preprocessor took 25.74ms. Allocated memory is still 350.2MB. Free memory was 274.1MB in the beginning and 272.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 01:07:04,578 INFO L158 Benchmark]: RCFGBuilder took 553.01ms. Allocated memory was 350.2MB in the beginning and 530.6MB in the end (delta: 180.4MB). Free memory was 272.4MB in the beginning and 477.9MB in the end (delta: -205.6MB). Peak memory consumption was 22.1MB. Max. memory is 16.0GB. [2023-08-04 01:07:04,578 INFO L158 Benchmark]: TraceAbstraction took 15127.83ms. Allocated memory was 530.6MB in the beginning and 1.3GB in the end (delta: 740.3MB). Free memory was 477.9MB in the beginning and 1.0GB in the end (delta: -567.8MB). Peak memory consumption was 321.9MB. Max. memory is 16.0GB. [2023-08-04 01:07:04,580 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 303.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 498.87ms. Allocated memory is still 350.2MB. Free memory was 299.6MB in the beginning and 276.9MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 47.55ms. Allocated memory is still 350.2MB. Free memory was 276.9MB in the beginning and 274.1MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 25.74ms. Allocated memory is still 350.2MB. Free memory was 274.1MB in the beginning and 272.4MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 553.01ms. Allocated memory was 350.2MB in the beginning and 530.6MB in the end (delta: 180.4MB). Free memory was 272.4MB in the beginning and 477.9MB in the end (delta: -205.6MB). Peak memory consumption was 22.1MB. Max. memory is 16.0GB. * TraceAbstraction took 15127.83ms. Allocated memory was 530.6MB in the beginning and 1.3GB in the end (delta: 740.3MB). Free memory was 477.9MB in the beginning and 1.0GB in the end (delta: -567.8MB). Peak memory consumption was 321.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 77 PlacesBefore, 23 PlacesAfterwards, 73 TransitionsBefore, 18 TransitionsAfterwards, 652 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 1541 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 836, independent: 751, independent conditional: 0, independent unconditional: 751, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 335, independent: 325, independent conditional: 0, independent unconditional: 325, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 836, independent: 426, independent conditional: 0, independent unconditional: 426, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 335, unknown conditional: 0, unknown unconditional: 335] , Statistics on independence cache: Total cache size (in pairs): 45, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 98 PlacesBefore, 40 PlacesAfterwards, 90 TransitionsBefore, 31 TransitionsAfterwards, 1816 CoEnabledTransitionPairs, 7 FixpointIterations, 31 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 65 TotalNumberOfCompositions, 6060 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2324, independent: 2135, independent conditional: 0, independent unconditional: 2135, dependent: 189, dependent conditional: 0, dependent unconditional: 189, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 856, independent: 833, independent conditional: 0, independent unconditional: 833, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2324, independent: 1302, independent conditional: 0, independent unconditional: 1302, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 856, unknown conditional: 0, unknown unconditional: 856] , Statistics on independence cache: Total cache size (in pairs): 128, Positive cache size: 115, Positive conditional cache size: 0, Positive unconditional cache size: 115, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 122 PlacesBefore, 47 PlacesAfterwards, 117 TransitionsBefore, 39 TransitionsAfterwards, 3436 CoEnabledTransitionPairs, 7 FixpointIterations, 31 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 92 TotalNumberOfCompositions, 10513 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3780, independent: 3543, independent conditional: 0, independent unconditional: 3543, dependent: 237, dependent conditional: 0, dependent unconditional: 237, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1655, independent: 1616, independent conditional: 0, independent unconditional: 1616, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3780, independent: 1927, independent conditional: 0, independent unconditional: 1927, dependent: 198, dependent conditional: 0, dependent unconditional: 198, unknown: 1655, unknown conditional: 0, unknown unconditional: 1655] , Statistics on independence cache: Total cache size (in pairs): 153, Positive cache size: 132, Positive conditional cache size: 0, Positive unconditional cache size: 132, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L715] 0 _Bool y$flush_delayed; [L716] 0 int y$mem_tmp; [L717] 0 _Bool y$r_buff0_thd0; [L718] 0 _Bool y$r_buff0_thd1; [L719] 0 _Bool y$r_buff0_thd2; [L720] 0 _Bool y$r_buff1_thd0; [L721] 0 _Bool y$r_buff1_thd1; [L722] 0 _Bool y$r_buff1_thd2; [L723] 0 _Bool y$read_delayed; [L724] 0 int *y$read_delayed_var; [L725] 0 int y$w_buff0; [L726] 0 _Bool y$w_buff0_used; [L727] 0 int y$w_buff1; [L728] 0 _Bool y$w_buff1_used; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2473[2]; [L791] 0 int asdf=0; VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0))=-1, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L738] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L738] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] 0 asdf++ VAL [__unbuffered_cnt=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0))=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L734] 2 y$w_buff1 = y$w_buff0 [L735] 2 y$w_buff0 = 2 [L736] 2 y$w_buff1_used = y$w_buff0_used [L737] 2 y$w_buff0_used = (_Bool)1 [L738] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=2, y$w_buff1_used=1, y=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 114 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=1, InterpolantAutomatonStates: 3, 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, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 7 procedures, 131 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 4, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 165 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 126 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 14 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 318 IncrementalHoareTripleChecker+Invalid, 332 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 14 mSolverCounterUnsat, 9 mSDtfsCounter, 318 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=2, InterpolantAutomatonStates: 16, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 80 ConstructedInterpolants, 0 QuantifiedInterpolants, 160 SizeOfPredicates, 0 NumberOfNonLiveVariables, 280 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 42/50 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 131 locations, 6 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: 6.7s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-04 01:07:04,609 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...