/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:39:45,748 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:39:45,807 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:39:45,811 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:39:45,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:39:45,811 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:39:45,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:39:45,831 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:39:45,832 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:39:45,835 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:39:45,835 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:39:45,835 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:39:45,836 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:39:45,837 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:39:45,837 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:39:45,837 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:39:45,837 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:39:45,837 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:39:45,838 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:39:45,838 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:39:45,838 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:39:45,838 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:39:45,838 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:39:45,839 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:39:45,839 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:39:45,840 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:39:45,840 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:39:45,840 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:39:45,840 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:39:45,841 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:39:45,841 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:39:45,841 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:39:45,842 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:39:45,843 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:39:45,843 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:39:46,021 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:39:46,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:39:46,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:39:46,054 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:39:46,054 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:39:46,055 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:39:47,074 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:39:47,273 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:39:47,274 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:39:47,305 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51654c02/bdfc7186c79e40ee8d0d1754f3d47f7e/FLAGdea9288da [2023-08-04 05:39:47,318 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b51654c02/bdfc7186c79e40ee8d0d1754f3d47f7e [2023-08-04 05:39:47,320 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:39:47,321 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:39:47,322 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:39:47,322 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:39:47,324 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:39:47,326 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,327 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2463f903 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47, skipping insertion in model container [2023-08-04 05:39:47,327 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,359 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:39:47,478 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_mix014_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:39:47,658 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:39:47,665 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:39:47,678 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix014_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-04 05:39:47,699 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:39:47,701 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:39:47,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:39:47,750 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:39:47,750 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:39:47,755 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:39:47,755 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47 WrapperNode [2023-08-04 05:39:47,755 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:39:47,756 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:39:47,756 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:39:47,756 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:39:47,761 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,773 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,792 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 178 [2023-08-04 05:39:47,792 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:39:47,793 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:39:47,793 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:39:47,793 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:39:47,799 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,803 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,803 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,812 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,814 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,816 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,817 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,820 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:39:47,820 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:39:47,821 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:39:47,821 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:39:47,821 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (1/1) ... [2023-08-04 05:39:47,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:39:47,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:39:47,844 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 05:39:47,852 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 05:39:47,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:39:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:39:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:39:47,871 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:39:47,871 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:39:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:39:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:39:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:39:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:39:47,872 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:39:47,872 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:39:47,874 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:39:47,977 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:39:47,979 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:39:48,241 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:39:48,346 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:39:48,346 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:39:48,347 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:39:48 BoogieIcfgContainer [2023-08-04 05:39:48,347 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:39:48,349 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:39:48,349 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:39:48,352 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:39:48,352 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:39:47" (1/3) ... [2023-08-04 05:39:48,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476271ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:39:48, skipping insertion in model container [2023-08-04 05:39:48,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:39:47" (2/3) ... [2023-08-04 05:39:48,353 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@476271ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:39:48, skipping insertion in model container [2023-08-04 05:39:48,353 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:39:48" (3/3) ... [2023-08-04 05:39:48,355 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix014_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 05:39:48,360 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:39:48,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:39:48,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:39:48,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:39:48,418 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:39:48,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 05:39:48,618 INFO L124 PetriNetUnfolderBase]: 62/936 cut-off events. [2023-08-04 05:39:48,618 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:39:48,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 936 events. 62/936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5781 event pairs, 0 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 557. Up to 32 conditions per place. [2023-08-04 05:39:48,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 05:39:48,633 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 161 transitions, 342 flow [2023-08-04 05:39:48,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:39:48,642 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-04 05:39:48,646 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 161 transitions, 342 flow [2023-08-04 05:39:48,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 05:39:48,713 INFO L124 PetriNetUnfolderBase]: 62/936 cut-off events. [2023-08-04 05:39:48,713 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:39:48,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 936 events. 62/936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5781 event pairs, 0 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 557. Up to 32 conditions per place. [2023-08-04 05:39:48,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 4672 [2023-08-04 05:39:52,267 INFO L134 LiptonReduction]: Checked pairs total: 12956 [2023-08-04 05:39:52,267 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-04 05:39:52,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:39:52,291 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;@66f93ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:39:52,291 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:39:52,293 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:39:52,294 INFO L124 PetriNetUnfolderBase]: 0/7 cut-off events. [2023-08-04 05:39:52,294 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:39:52,294 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:52,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:39:52,294 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:39:52,297 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:52,298 INFO L85 PathProgramCache]: Analyzing trace with hash 20772205, now seen corresponding path program 1 times [2023-08-04 05:39:52,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:52,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1033183744] [2023-08-04 05:39:52,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:52,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:52,594 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 05:39:52,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:52,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1033183744] [2023-08-04 05:39:52,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1033183744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:52,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:39:52,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:39:52,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1267085714] [2023-08-04 05:39:52,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:52,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:52,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:52,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:52,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:39:52,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 293 [2023-08-04 05:39:52,630 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:39:52,630 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:52,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 293 [2023-08-04 05:39:52,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:54,390 INFO L124 PetriNetUnfolderBase]: 12873/19803 cut-off events. [2023-08-04 05:39:54,391 INFO L125 PetriNetUnfolderBase]: For 129/129 co-relation queries the response was YES. [2023-08-04 05:39:54,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38600 conditions, 19803 events. 12873/19803 cut-off events. For 129/129 co-relation queries the response was YES. Maximal size of possible extension queue 822. Compared 142059 event pairs, 3816 based on Foata normal form. 0/18061 useless extension candidates. Maximal degree in co-relation 32336. Up to 12394 conditions per place. [2023-08-04 05:39:54,492 INFO L140 encePairwiseOnDemand]: 289/293 looper letters, 56 selfloop transitions, 2 changer transitions 7/70 dead transitions. [2023-08-04 05:39:54,492 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 70 transitions, 291 flow [2023-08-04 05:39:54,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:54,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:54,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 487 transitions. [2023-08-04 05:39:54,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5540386803185438 [2023-08-04 05:39:54,510 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 487 transitions. [2023-08-04 05:39:54,510 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 487 transitions. [2023-08-04 05:39:54,514 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:54,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 487 transitions. [2023-08-04 05:39:54,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.33333333333334) internal successors, (487), 3 states have internal predecessors, (487), 0 states have call successors, (0), 0 states 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 05:39:54,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:54,526 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:54,528 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 108 flow. Second operand 3 states and 487 transitions. [2023-08-04 05:39:54,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 70 transitions, 291 flow [2023-08-04 05:39:54,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 70 transitions, 291 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:39:54,534 INFO L231 Difference]: Finished difference. Result has 53 places, 37 transitions, 90 flow [2023-08-04 05:39:54,536 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=53, PETRI_TRANSITIONS=37} [2023-08-04 05:39:54,539 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 1 predicate places. [2023-08-04 05:39:54,540 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 37 transitions, 90 flow [2023-08-04 05:39:54,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:39:54,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:54,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:54,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:39:54,541 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:39:54,547 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:54,547 INFO L85 PathProgramCache]: Analyzing trace with hash 615827089, now seen corresponding path program 1 times [2023-08-04 05:39:54,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:54,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180922210] [2023-08-04 05:39:54,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:54,547 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:54,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:54,633 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 05:39:54,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:54,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180922210] [2023-08-04 05:39:54,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180922210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:54,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:39:54,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:39:54,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234794555] [2023-08-04 05:39:54,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:54,635 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:54,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:54,636 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:54,636 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:39:54,661 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 293 [2023-08-04 05:39:54,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 37 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:39:54,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:54,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 293 [2023-08-04 05:39:54,662 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:56,084 INFO L124 PetriNetUnfolderBase]: 9395/13670 cut-off events. [2023-08-04 05:39:56,085 INFO L125 PetriNetUnfolderBase]: For 1036/1036 co-relation queries the response was YES. [2023-08-04 05:39:56,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28135 conditions, 13670 events. 9395/13670 cut-off events. For 1036/1036 co-relation queries the response was YES. Maximal size of possible extension queue 569. Compared 82897 event pairs, 8432 based on Foata normal form. 0/12838 useless extension candidates. Maximal degree in co-relation 28119. Up to 13240 conditions per place. [2023-08-04 05:39:56,142 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 33 selfloop transitions, 2 changer transitions 1/41 dead transitions. [2023-08-04 05:39:56,142 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 41 transitions, 172 flow [2023-08-04 05:39:56,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:56,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:56,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 451 transitions. [2023-08-04 05:39:56,144 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5130830489192264 [2023-08-04 05:39:56,145 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 451 transitions. [2023-08-04 05:39:56,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 451 transitions. [2023-08-04 05:39:56,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:56,146 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 451 transitions. [2023-08-04 05:39:56,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.33333333333334) internal successors, (451), 3 states have internal predecessors, (451), 0 states have call successors, (0), 0 states 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 05:39:56,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:56,152 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:56,156 INFO L175 Difference]: Start difference. First operand has 53 places, 37 transitions, 90 flow. Second operand 3 states and 451 transitions. [2023-08-04 05:39:56,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 41 transitions, 172 flow [2023-08-04 05:39:56,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 41 transitions, 166 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:39:56,158 INFO L231 Difference]: Finished difference. Result has 49 places, 37 transitions, 94 flow [2023-08-04 05:39:56,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=49, PETRI_TRANSITIONS=37} [2023-08-04 05:39:56,159 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2023-08-04 05:39:56,159 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 37 transitions, 94 flow [2023-08-04 05:39:56,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:39:56,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:56,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:56,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 05:39:56,160 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:39:56,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:56,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1910647636, now seen corresponding path program 1 times [2023-08-04 05:39:56,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:56,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444850350] [2023-08-04 05:39:56,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:56,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:56,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:56,246 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:39:56,246 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:56,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444850350] [2023-08-04 05:39:56,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444850350] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:39:56,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498973757] [2023-08-04 05:39:56,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:56,248 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:39:56,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:39:56,263 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 05:39:56,317 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 05:39:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:56,399 INFO L262 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:39:56,402 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:39:56,414 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 05:39:56,414 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:39:56,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498973757] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:56,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:39:56,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:39:56,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374368462] [2023-08-04 05:39:56,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:56,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:56,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:56,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:39:56,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 293 [2023-08-04 05:39:56,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 05:39:56,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:56,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 293 [2023-08-04 05:39:56,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:57,315 INFO L124 PetriNetUnfolderBase]: 7984/11569 cut-off events. [2023-08-04 05:39:57,315 INFO L125 PetriNetUnfolderBase]: For 54/54 co-relation queries the response was YES. [2023-08-04 05:39:57,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22870 conditions, 11569 events. 7984/11569 cut-off events. For 54/54 co-relation queries the response was YES. Maximal size of possible extension queue 510. Compared 68656 event pairs, 5674 based on Foata normal form. 0/10954 useless extension candidates. Maximal degree in co-relation 22853. Up to 11037 conditions per place. [2023-08-04 05:39:57,355 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 36 selfloop transitions, 2 changer transitions 1/44 dead transitions. [2023-08-04 05:39:57,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 44 transitions, 186 flow [2023-08-04 05:39:57,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:57,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:57,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 454 transitions. [2023-08-04 05:39:57,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5164960182025028 [2023-08-04 05:39:57,357 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 454 transitions. [2023-08-04 05:39:57,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 454 transitions. [2023-08-04 05:39:57,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:57,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 454 transitions. [2023-08-04 05:39:57,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.33333333333334) internal successors, (454), 3 states have internal predecessors, (454), 0 states have call successors, (0), 0 states 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 05:39:57,360 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:57,361 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:57,361 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 94 flow. Second operand 3 states and 454 transitions. [2023-08-04 05:39:57,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 44 transitions, 186 flow [2023-08-04 05:39:57,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 44 transitions, 182 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:39:57,363 INFO L231 Difference]: Finished difference. Result has 50 places, 37 transitions, 98 flow [2023-08-04 05:39:57,363 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=90, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=50, PETRI_TRANSITIONS=37} [2023-08-04 05:39:57,364 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -2 predicate places. [2023-08-04 05:39:57,364 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 37 transitions, 98 flow [2023-08-04 05:39:57,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 0 states have call successors, (0), 0 states 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 05:39:57,364 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:57,364 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:57,372 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 05:39:57,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:39:57,569 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:39:57,570 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:57,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1537787140, now seen corresponding path program 1 times [2023-08-04 05:39:57,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:57,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758839147] [2023-08-04 05:39:57,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:57,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:57,631 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 05:39:57,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758839147] [2023-08-04 05:39:57,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758839147] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:39:57,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415217738] [2023-08-04 05:39:57,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:57,633 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:39:57,633 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:39:57,655 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 05:39:57,682 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 05:39:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:57,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:39:57,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:39:57,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:39:57,743 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:39:57,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [415217738] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:57,744 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:39:57,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:39:57,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103662942] [2023-08-04 05:39:57,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:57,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:57,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:57,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:57,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:39:57,753 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 293 [2023-08-04 05:39:57,754 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:39:57,754 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:57,754 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 293 [2023-08-04 05:39:57,755 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:58,514 INFO L124 PetriNetUnfolderBase]: 6824/9763 cut-off events. [2023-08-04 05:39:58,515 INFO L125 PetriNetUnfolderBase]: For 34/34 co-relation queries the response was YES. [2023-08-04 05:39:58,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19360 conditions, 9763 events. 6824/9763 cut-off events. For 34/34 co-relation queries the response was YES. Maximal size of possible extension queue 452. Compared 56019 event pairs, 4336 based on Foata normal form. 0/9306 useless extension candidates. Maximal degree in co-relation 19343. Up to 9119 conditions per place. [2023-08-04 05:39:58,544 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 39 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:39:58,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 47 transitions, 202 flow [2023-08-04 05:39:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:58,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:58,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-04 05:39:58,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5199089874857793 [2023-08-04 05:39:58,546 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-04 05:39:58,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-04 05:39:58,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:58,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-04 05:39:58,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states 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 05:39:58,549 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:58,549 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:58,549 INFO L175 Difference]: Start difference. First operand has 50 places, 37 transitions, 98 flow. Second operand 3 states and 457 transitions. [2023-08-04 05:39:58,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 47 transitions, 202 flow [2023-08-04 05:39:58,550 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:39:58,551 INFO L231 Difference]: Finished difference. Result has 51 places, 37 transitions, 102 flow [2023-08-04 05:39:58,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=102, PETRI_PLACES=51, PETRI_TRANSITIONS=37} [2023-08-04 05:39:58,551 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2023-08-04 05:39:58,551 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 37 transitions, 102 flow [2023-08-04 05:39:58,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:39:58,552 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:58,552 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:58,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 05:39:58,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 05:39:58,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:39:58,757 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:58,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1452922076, now seen corresponding path program 1 times [2023-08-04 05:39:58,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:58,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106832454] [2023-08-04 05:39:58,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:58,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:58,802 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 05:39:58,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:58,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106832454] [2023-08-04 05:39:58,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106832454] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:39:58,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721865926] [2023-08-04 05:39:58,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:58,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:39:58,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:39:58,804 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:39:58,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 05:39:58,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:58,903 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 05:39:58,904 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:39:58,910 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:39:58,910 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 05:39:58,910 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721865926] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:39:58,910 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 05:39:58,910 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 05:39:58,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000015179] [2023-08-04 05:39:58,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:39:58,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:39:58,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:39:58,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:39:58,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:39:58,921 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 293 [2023-08-04 05:39:58,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 37 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 05:39:58,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:39:58,922 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 293 [2023-08-04 05:39:58,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:39:59,672 INFO L124 PetriNetUnfolderBase]: 6392/8823 cut-off events. [2023-08-04 05:39:59,672 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2023-08-04 05:39:59,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17985 conditions, 8823 events. 6392/8823 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 411. Compared 45869 event pairs, 4872 based on Foata normal form. 0/8474 useless extension candidates. Maximal degree in co-relation 17967. Up to 7279 conditions per place. [2023-08-04 05:39:59,692 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 43 selfloop transitions, 2 changer transitions 1/51 dead transitions. [2023-08-04 05:39:59,693 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 51 transitions, 222 flow [2023-08-04 05:39:59,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:39:59,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:39:59,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-04 05:39:59,694 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5244596131968146 [2023-08-04 05:39:59,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-04 05:39:59,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-04 05:39:59,694 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:39:59,695 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-04 05:39:59,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states 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 05:39:59,697 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:59,697 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 293.0) internal successors, (1172), 4 states have internal predecessors, (1172), 0 states have call successors, (0), 0 states 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 05:39:59,697 INFO L175 Difference]: Start difference. First operand has 51 places, 37 transitions, 102 flow. Second operand 3 states and 461 transitions. [2023-08-04 05:39:59,697 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 51 transitions, 222 flow [2023-08-04 05:39:59,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 51 transitions, 218 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 05:39:59,698 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 106 flow [2023-08-04 05:39:59,699 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=106, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 05:39:59,699 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 0 predicate places. [2023-08-04 05:39:59,699 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 106 flow [2023-08-04 05:39:59,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.33333333333334) internal successors, (430), 3 states have internal predecessors, (430), 0 states have call successors, (0), 0 states 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 05:39:59,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:39:59,700 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:39:59,704 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 05:39:59,904 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:39:59,904 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:39:59,905 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:39:59,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1538405468, now seen corresponding path program 1 times [2023-08-04 05:39:59,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:39:59,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337615509] [2023-08-04 05:39:59,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:59,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:39:59,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:39:59,972 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:39:59,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:39:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337615509] [2023-08-04 05:39:59,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337615509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:39:59,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693275294] [2023-08-04 05:39:59,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:39:59,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:39:59,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:39:59,975 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:39:59,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 05:40:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:40:00,070 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:40:00,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:40:00,092 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:40:00,093 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:40:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 05:40:00,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693275294] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:40:00,109 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:40:00,109 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:40:00,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414936938] [2023-08-04 05:40:00,109 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:40:00,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:40:00,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:40:00,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:40:00,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:40:00,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 137 out of 293 [2023-08-04 05:40:00,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 106 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 05:40:00,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:40:00,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 137 of 293 [2023-08-04 05:40:00,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:40:00,135 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:40:00,135 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 05:40:00,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 21 events. 6/21 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 26 event pairs, 2 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 05:40:00,135 INFO L140 encePairwiseOnDemand]: 290/293 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:40:00,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 12 transitions, 51 flow [2023-08-04 05:40:00,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:40:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:40:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 560 transitions. [2023-08-04 05:40:00,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4778156996587031 [2023-08-04 05:40:00,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 560 transitions. [2023-08-04 05:40:00,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 560 transitions. [2023-08-04 05:40:00,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:40:00,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 560 transitions. [2023-08-04 05:40:00,138 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:40:00,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states 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 05:40:00,140 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 293.0) internal successors, (1465), 5 states have internal predecessors, (1465), 0 states have call successors, (0), 0 states 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 05:40:00,140 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 106 flow. Second operand 4 states and 560 transitions. [2023-08-04 05:40:00,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 22 places, 12 transitions, 51 flow [2023-08-04 05:40:00,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:40:00,141 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-08-04 05:40:00,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=293, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-08-04 05:40:00,142 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -31 predicate places. [2023-08-04 05:40:00,142 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-08-04 05:40:00,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states 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 05:40:00,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:40:00,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:40:00,144 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:40:00,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 05:40:00,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:40:00,349 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 05:40:00,351 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:40:00,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 05:40:00,407 INFO L124 PetriNetUnfolderBase]: 62/936 cut-off events. [2023-08-04 05:40:00,408 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:00,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 986 conditions, 936 events. 62/936 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5781 event pairs, 0 based on Foata normal form. 0/827 useless extension candidates. Maximal degree in co-relation 557. Up to 32 conditions per place. [2023-08-04 05:40:00,409 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 161 transitions, 342 flow [2023-08-04 05:40:00,411 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 130 transitions, 280 flow [2023-08-04 05:40:00,411 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:40:00,411 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 136 places, 130 transitions, 280 flow [2023-08-04 05:40:00,411 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 136 places, 130 transitions, 280 flow [2023-08-04 05:40:00,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 136 places, 130 transitions, 280 flow [2023-08-04 05:40:00,435 INFO L124 PetriNetUnfolderBase]: 14/440 cut-off events. [2023-08-04 05:40:00,435 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:00,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 440 events. 14/440 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2011 event pairs, 0 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 309. Up to 16 conditions per place. [2023-08-04 05:40:00,439 INFO L119 LiptonReduction]: Number of co-enabled transitions 2750 [2023-08-04 05:40:03,166 INFO L134 LiptonReduction]: Checked pairs total: 7097 [2023-08-04 05:40:03,167 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-04 05:40:03,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:40:03,168 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;@66f93ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:40:03,168 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:40:03,170 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:40:03,171 INFO L124 PetriNetUnfolderBase]: 0/20 cut-off events. [2023-08-04 05:40:03,171 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:03,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:40:03,171 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:40:03,171 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:40:03,171 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:40:03,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1484263568, now seen corresponding path program 1 times [2023-08-04 05:40:03,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:40:03,171 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129304136] [2023-08-04 05:40:03,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:03,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:40:03,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:40:03,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:40:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:40:03,219 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:40:03,219 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:40:03,220 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:40:03,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:40:03,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:40:03,220 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:40:03,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:40:03,220 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:40:03,221 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:40:03,221 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:40:03,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:40:03,255 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:40:03,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 05:40:03,584 INFO L124 PetriNetUnfolderBase]: 282/4332 cut-off events. [2023-08-04 05:40:03,584 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:40:03,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 4332 events. 282/4332 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42075 event pairs, 0 based on Foata normal form. 0/3847 useless extension candidates. Maximal degree in co-relation 3127. Up to 162 conditions per place. [2023-08-04 05:40:03,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 05:40:03,610 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 207 places, 196 transitions, 440 flow [2023-08-04 05:40:03,610 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:40:03,610 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-04 05:40:03,610 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 207 places, 196 transitions, 440 flow [2023-08-04 05:40:03,611 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 196 transitions, 440 flow [2023-08-04 05:40:04,006 INFO L124 PetriNetUnfolderBase]: 282/4332 cut-off events. [2023-08-04 05:40:04,006 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:40:04,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4621 conditions, 4332 events. 282/4332 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42075 event pairs, 0 based on Foata normal form. 0/3847 useless extension candidates. Maximal degree in co-relation 3127. Up to 162 conditions per place. [2023-08-04 05:40:04,092 INFO L119 LiptonReduction]: Number of co-enabled transitions 11516 [2023-08-04 05:40:07,215 INFO L134 LiptonReduction]: Checked pairs total: 35754 [2023-08-04 05:40:07,215 INFO L136 LiptonReduction]: Total number of compositions: 143 [2023-08-04 05:40:07,217 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:40:07,217 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;@66f93ae, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:40:07,217 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:40:07,219 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:40:07,219 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-04 05:40:07,219 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:40:07,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:40:07,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 05:40:07,219 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:40:07,220 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:40:07,220 INFO L85 PathProgramCache]: Analyzing trace with hash 35355734, now seen corresponding path program 1 times [2023-08-04 05:40:07,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:40:07,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665732007] [2023-08-04 05:40:07,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:40:07,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:40:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:40:07,309 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 05:40:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:40:07,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665732007] [2023-08-04 05:40:07,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665732007] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:40:07,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:40:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:40:07,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442367073] [2023-08-04 05:40:07,310 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:40:07,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:40:07,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:40:07,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:40:07,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:40:07,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 339 [2023-08-04 05:40:07,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 71 transitions, 190 flow. Second operand has 3 states, 3 states have (on average 166.33333333333334) internal successors, (499), 3 states have internal predecessors, (499), 0 states have call successors, (0), 0 states 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 05:40:07,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:40:07,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 339 [2023-08-04 05:40:07,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand