/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_rfi009_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 06:23:34,512 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 06:23:34,588 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 06:23:34,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 06:23:34,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 06:23:34,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 06:23:34,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 06:23:34,631 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 06:23:34,631 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 06:23:34,640 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 06:23:34,641 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 06:23:34,641 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 06:23:34,642 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 06:23:34,643 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 06:23:34,644 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 06:23:34,644 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 06:23:34,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 06:23:34,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 06:23:34,644 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 06:23:34,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 06:23:34,645 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 06:23:34,645 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 06:23:34,645 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 06:23:34,646 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 06:23:34,647 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 06:23:34,647 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 06:23:34,648 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 06:23:34,648 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 06:23:34,648 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 06:23:34,649 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 06:23:34,649 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:23:34,650 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 06:23:34,650 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 06:23:34,650 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 06:23:34,650 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 06:23:34,650 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 06:23:34,650 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 06:23:34,650 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 06:23:34,651 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 06:23:34,651 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 06:23:34,651 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 06:23:34,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 06:23:34,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 06:23:34,865 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 06:23:34,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 06:23:34,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 06:23:34,868 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 06:23:34,869 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi009_rmo.oepc_bound2.i [2023-08-04 06:23:36,003 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 06:23:36,210 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 06:23:36,211 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi009_rmo.oepc_bound2.i [2023-08-04 06:23:36,226 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d227485e6/12e4fcd373594dbc825f8e814c72a23c/FLAG1eb2c95ec [2023-08-04 06:23:36,238 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d227485e6/12e4fcd373594dbc825f8e814c72a23c [2023-08-04 06:23:36,241 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 06:23:36,242 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 06:23:36,243 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 06:23:36,243 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 06:23:36,246 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 06:23:36,246 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,247 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66914b96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36, skipping insertion in model container [2023-08-04 06:23:36,247 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,291 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 06:23:36,410 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_rfi009_rmo.oepc_bound2.i[992,1005] [2023-08-04 06:23:36,554 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:23:36,570 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 06:23:36,587 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_rfi009_rmo.oepc_bound2.i[992,1005] [2023-08-04 06:23:36,603 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 06:23:36,605 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 06:23:36,673 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 06:23:36,707 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:23:36,707 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 06:23:36,713 INFO L206 MainTranslator]: Completed translation [2023-08-04 06:23:36,715 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36 WrapperNode [2023-08-04 06:23:36,716 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 06:23:36,717 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 06:23:36,717 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 06:23:36,717 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 06:23:36,723 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,758 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,795 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 162 [2023-08-04 06:23:36,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 06:23:36,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 06:23:36,797 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 06:23:36,797 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 06:23:36,804 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,805 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,819 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,819 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,845 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,852 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,855 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,856 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,866 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 06:23:36,867 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 06:23:36,867 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 06:23:36,867 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 06:23:36,868 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (1/1) ... [2023-08-04 06:23:36,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 06:23:36,882 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:23:36,902 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 06:23:36,929 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 06:23:36,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 06:23:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 06:23:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 06:23:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 06:23:36,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 06:23:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 06:23:36,946 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 06:23:36,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 06:23:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 06:23:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 06:23:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 06:23:36,947 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 06:23:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 06:23:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 06:23:36,947 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 06:23:36,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 06:23:36,950 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 06:23:37,134 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 06:23:37,136 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 06:23:37,556 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 06:23:37,777 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 06:23:37,778 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 06:23:37,781 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:23:37 BoogieIcfgContainer [2023-08-04 06:23:37,781 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 06:23:37,784 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 06:23:37,785 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 06:23:37,788 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 06:23:37,789 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 06:23:36" (1/3) ... [2023-08-04 06:23:37,790 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9854db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:23:37, skipping insertion in model container [2023-08-04 06:23:37,790 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 06:23:36" (2/3) ... [2023-08-04 06:23:37,791 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@d9854db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 06:23:37, skipping insertion in model container [2023-08-04 06:23:37,791 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 06:23:37" (3/3) ... [2023-08-04 06:23:37,792 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi009_rmo.oepc_bound2.i [2023-08-04 06:23:37,799 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 06:23:37,807 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 06:23:37,808 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 06:23:37,808 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 06:23:37,879 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:23:37,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-04 06:23:38,083 INFO L124 PetriNetUnfolderBase]: 30/462 cut-off events. [2023-08-04 06:23:38,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:38,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 462 events. 30/462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1906 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-04 06:23:38,090 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 146 transitions, 307 flow [2023-08-04 06:23:38,096 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 134 places, 131 transitions, 271 flow [2023-08-04 06:23:38,102 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:23:38,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 134 places, 131 transitions, 271 flow [2023-08-04 06:23:38,122 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 134 places, 131 transitions, 271 flow [2023-08-04 06:23:38,123 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 131 transitions, 271 flow [2023-08-04 06:23:38,172 INFO L124 PetriNetUnfolderBase]: 22/359 cut-off events. [2023-08-04 06:23:38,172 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:38,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 377 conditions, 359 events. 22/359 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1294 event pairs, 0 based on Foata normal form. 0/323 useless extension candidates. Maximal degree in co-relation 233. Up to 16 conditions per place. [2023-08-04 06:23:38,179 INFO L119 LiptonReduction]: Number of co-enabled transitions 1760 [2023-08-04 06:23:43,551 INFO L134 LiptonReduction]: Checked pairs total: 4362 [2023-08-04 06:23:43,551 INFO L136 LiptonReduction]: Total number of compositions: 111 [2023-08-04 06:23:43,562 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:23:43,567 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;@55f19fc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:23:43,567 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 06:23:43,574 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:23:43,574 INFO L124 PetriNetUnfolderBase]: 4/44 cut-off events. [2023-08-04 06:23:43,574 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:43,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:23:43,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:23:43,575 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:23:43,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:23:43,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1073627707, now seen corresponding path program 1 times [2023-08-04 06:23:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:23:43,587 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173392189] [2023-08-04 06:23:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:23:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:43,900 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 06:23:43,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:23:43,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173392189] [2023-08-04 06:23:43,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173392189] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:23:43,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:23:43,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:23:43,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519383128] [2023-08-04 06:23:43,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:23:43,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:23:43,916 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:23:43,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:23:43,936 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:23:43,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 257 [2023-08-04 06:23:43,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:23:43,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:23:43,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 257 [2023-08-04 06:23:43,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:23:44,313 INFO L124 PetriNetUnfolderBase]: 1106/1772 cut-off events. [2023-08-04 06:23:44,314 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 06:23:44,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3559 conditions, 1772 events. 1106/1772 cut-off events. For 9/9 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 8873 event pairs, 894 based on Foata normal form. 75/1670 useless extension candidates. Maximal degree in co-relation 3546. Up to 1740 conditions per place. [2023-08-04 06:23:44,326 INFO L140 encePairwiseOnDemand]: 253/257 looper letters, 24 selfloop transitions, 2 changer transitions 2/30 dead transitions. [2023-08-04 06:23:44,327 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 30 transitions, 125 flow [2023-08-04 06:23:44,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:23:44,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:23:44,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 414 transitions. [2023-08-04 06:23:44,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5369649805447471 [2023-08-04 06:23:44,349 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 414 transitions. [2023-08-04 06:23:44,349 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 414 transitions. [2023-08-04 06:23:44,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:23:44,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 414 transitions. [2023-08-04 06:23:44,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 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 06:23:44,366 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 06:23:44,367 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 06:23:44,369 INFO L175 Difference]: Start difference. First operand has 34 places, 28 transitions, 65 flow. Second operand 3 states and 414 transitions. [2023-08-04 06:23:44,369 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 30 transitions, 125 flow [2023-08-04 06:23:44,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 125 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:23:44,373 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 69 flow [2023-08-04 06:23:44,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=63, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-04 06:23:44,378 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 06:23:44,378 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 69 flow [2023-08-04 06:23:44,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.33333333333334) internal successors, (391), 3 states have internal predecessors, (391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:23:44,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:23:44,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:23:44,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 06:23:44,380 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:23:44,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:23:44,388 INFO L85 PathProgramCache]: Analyzing trace with hash -1537234223, now seen corresponding path program 1 times [2023-08-04 06:23:44,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:23:44,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626646890] [2023-08-04 06:23:44,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:44,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:23:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:44,563 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 06:23:44,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:23:44,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626646890] [2023-08-04 06:23:44,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626646890] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:23:44,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444867525] [2023-08-04 06:23:44,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:44,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:23:44,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:23:44,571 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 06:23:44,578 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 06:23:44,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:44,685 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:23:44,689 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:23:44,701 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 06:23:44,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:23:44,702 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444867525] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:23:44,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:23:44,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:23:44,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660982480] [2023-08-04 06:23:44,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:23:44,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:23:44,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:23:44,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:23:44,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:23:44,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 257 [2023-08-04 06:23:44,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 06:23:44,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:23:44,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 257 [2023-08-04 06:23:44,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:23:44,982 INFO L124 PetriNetUnfolderBase]: 844/1309 cut-off events. [2023-08-04 06:23:44,983 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 06:23:44,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2663 conditions, 1309 events. 844/1309 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5877 event pairs, 718 based on Foata normal form. 0/1236 useless extension candidates. Maximal degree in co-relation 2647. Up to 1276 conditions per place. [2023-08-04 06:23:44,995 INFO L140 encePairwiseOnDemand]: 254/257 looper letters, 27 selfloop transitions, 2 changer transitions 1/32 dead transitions. [2023-08-04 06:23:44,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 32 transitions, 141 flow [2023-08-04 06:23:45,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:23:45,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:23:45,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 415 transitions. [2023-08-04 06:23:45,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5382619974059663 [2023-08-04 06:23:45,003 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 415 transitions. [2023-08-04 06:23:45,003 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 415 transitions. [2023-08-04 06:23:45,003 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:23:45,003 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 415 transitions. [2023-08-04 06:23:45,004 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 138.33333333333334) internal successors, (415), 3 states have internal predecessors, (415), 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 06:23:45,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 06:23:45,007 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 06:23:45,007 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 69 flow. Second operand 3 states and 415 transitions. [2023-08-04 06:23:45,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 32 transitions, 141 flow [2023-08-04 06:23:45,009 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 137 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:23:45,010 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 73 flow [2023-08-04 06:23:45,010 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2023-08-04 06:23:45,011 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 06:23:45,011 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 73 flow [2023-08-04 06:23:45,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.33333333333334) internal successors, (394), 3 states have internal predecessors, (394), 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 06:23:45,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:23:45,011 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:23:45,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 06:23:45,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:23:45,217 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:23:45,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:23:45,218 INFO L85 PathProgramCache]: Analyzing trace with hash 62224314, now seen corresponding path program 1 times [2023-08-04 06:23:45,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:23:45,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219900583] [2023-08-04 06:23:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:45,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:23:45,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:45,320 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 06:23:45,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:23:45,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219900583] [2023-08-04 06:23:45,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219900583] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:23:45,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [134576744] [2023-08-04 06:23:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:45,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:23:45,324 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:23:45,330 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 06:23:45,358 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 06:23:45,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:45,448 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:23:45,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:23:45,461 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 06:23:45,461 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:23:45,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [134576744] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:23:45,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:23:45,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:23:45,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910989927] [2023-08-04 06:23:45,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:23:45,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:23:45,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:23:45,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:23:45,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:23:45,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 257 [2023-08-04 06:23:45,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 06:23:45,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:23:45,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 257 [2023-08-04 06:23:45,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:23:45,721 INFO L124 PetriNetUnfolderBase]: 776/1193 cut-off events. [2023-08-04 06:23:45,721 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 06:23:45,722 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2467 conditions, 1193 events. 776/1193 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5318 event pairs, 458 based on Foata normal form. 0/1141 useless extension candidates. Maximal degree in co-relation 2451. Up to 1016 conditions per place. [2023-08-04 06:23:45,727 INFO L140 encePairwiseOnDemand]: 254/257 looper letters, 30 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-08-04 06:23:45,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 157 flow [2023-08-04 06:23:45,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:23:45,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:23:45,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-04 06:23:45,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5421530479896238 [2023-08-04 06:23:45,729 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-04 06:23:45,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-04 06:23:45,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:23:45,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-04 06:23:45,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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 06:23:45,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 06:23:45,732 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 257.0) internal successors, (1028), 4 states have internal predecessors, (1028), 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 06:23:45,732 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 73 flow. Second operand 3 states and 418 transitions. [2023-08-04 06:23:45,732 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 157 flow [2023-08-04 06:23:45,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 153 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 06:23:45,734 INFO L231 Difference]: Finished difference. Result has 38 places, 26 transitions, 77 flow [2023-08-04 06:23:45,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=38, PETRI_TRANSITIONS=26} [2023-08-04 06:23:45,735 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 4 predicate places. [2023-08-04 06:23:45,735 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 26 transitions, 77 flow [2023-08-04 06:23:45,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.33333333333334) internal successors, (397), 3 states have internal predecessors, (397), 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 06:23:45,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:23:45,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:23:45,745 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 06:23:45,941 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,SelfDestructingSolverStorable2 [2023-08-04 06:23:45,941 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:23:45,942 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:23:45,942 INFO L85 PathProgramCache]: Analyzing trace with hash -578270043, now seen corresponding path program 1 times [2023-08-04 06:23:45,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:23:45,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096689519] [2023-08-04 06:23:45,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:45,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:23:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:46,013 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 06:23:46,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:23:46,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096689519] [2023-08-04 06:23:46,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096689519] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:23:46,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [995550488] [2023-08-04 06:23:46,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:46,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:23:46,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:23:46,015 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 06:23:46,038 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 06:23:46,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:46,136 INFO L262 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:23:46,137 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:23:46,162 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 06:23:46,163 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:23:46,178 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 06:23:46,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [995550488] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:23:46,178 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:23:46,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:23:46,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613094415] [2023-08-04 06:23:46,179 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:23:46,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:23:46,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:23:46,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:23:46,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:23:46,192 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 257 [2023-08-04 06:23:46,193 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 26 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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 06:23:46,193 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:23:46,193 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 257 [2023-08-04 06:23:46,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:23:46,214 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 06:23:46,215 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:46,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45 conditions, 16 events. 4/16 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 20 event pairs, 0 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 06:23:46,215 INFO L140 encePairwiseOnDemand]: 254/257 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 06:23:46,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 10 transitions, 43 flow [2023-08-04 06:23:46,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:23:46,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:23:46,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 518 transitions. [2023-08-04 06:23:46,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5038910505836576 [2023-08-04 06:23:46,217 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 518 transitions. [2023-08-04 06:23:46,217 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 518 transitions. [2023-08-04 06:23:46,217 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:23:46,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 518 transitions. [2023-08-04 06:23:46,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 129.5) internal successors, (518), 4 states have internal predecessors, (518), 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 06:23:46,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 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 06:23:46,221 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 257.0) internal successors, (1285), 5 states have internal predecessors, (1285), 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 06:23:46,221 INFO L175 Difference]: Start difference. First operand has 38 places, 26 transitions, 77 flow. Second operand 4 states and 518 transitions. [2023-08-04 06:23:46,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 10 transitions, 43 flow [2023-08-04 06:23:46,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:23:46,221 INFO L231 Difference]: Finished difference. Result has 18 places, 0 transitions, 0 flow [2023-08-04 06:23:46,221 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=257, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=18, PETRI_TRANSITIONS=0} [2023-08-04 06:23:46,222 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -16 predicate places. [2023-08-04 06:23:46,222 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 0 transitions, 0 flow [2023-08-04 06:23:46,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.0) internal successors, (655), 5 states have internal predecessors, (655), 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 06:23:46,225 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 06:23:46,232 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 06:23:46,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:23:46,430 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 06:23:46,432 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE (1/2) [2023-08-04 06:23:46,434 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-04 06:23:46,470 INFO L124 PetriNetUnfolderBase]: 30/462 cut-off events. [2023-08-04 06:23:46,470 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:46,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 462 events. 30/462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1906 event pairs, 0 based on Foata normal form. 0/410 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-04 06:23:46,471 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 146 transitions, 307 flow [2023-08-04 06:23:46,472 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 249 flow [2023-08-04 06:23:46,472 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:23:46,472 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 117 transitions, 249 flow [2023-08-04 06:23:46,472 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 117 transitions, 249 flow [2023-08-04 06:23:46,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 249 flow [2023-08-04 06:23:46,489 INFO L124 PetriNetUnfolderBase]: 6/230 cut-off events. [2023-08-04 06:23:46,489 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:46,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 255 conditions, 230 events. 6/230 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 590 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 171. Up to 8 conditions per place. [2023-08-04 06:23:46,490 INFO L119 LiptonReduction]: Number of co-enabled transitions 1190 [2023-08-04 06:23:50,791 INFO L134 LiptonReduction]: Checked pairs total: 2662 [2023-08-04 06:23:50,792 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-04 06:23:50,793 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 06:23:50,794 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;@55f19fc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:23:50,794 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 06:23:50,797 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:23:50,797 INFO L124 PetriNetUnfolderBase]: 0/18 cut-off events. [2023-08-04 06:23:50,797 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 06:23:50,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:23:50,797 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 06:23:50,797 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 06:23:50,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:23:50,797 INFO L85 PathProgramCache]: Analyzing trace with hash -97666417, now seen corresponding path program 1 times [2023-08-04 06:23:50,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:23:50,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933199009] [2023-08-04 06:23:50,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:50,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:23:50,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:23:50,823 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 06:23:50,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 06:23:50,856 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 06:23:50,856 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 06:23:50,856 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 06:23:50,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 06:23:50,856 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 06:23:50,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 06:23:50,857 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 06:23:50,857 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 06:23:50,858 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 06:23:50,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 06:23:50,897 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 06:23:50,900 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 176 places, 168 transitions, 372 flow [2023-08-04 06:23:51,033 INFO L124 PetriNetUnfolderBase]: 93/1375 cut-off events. [2023-08-04 06:23:51,033 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 06:23:51,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1473 conditions, 1375 events. 93/1375 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9121 event pairs, 0 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 1007. Up to 54 conditions per place. [2023-08-04 06:23:51,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 176 places, 168 transitions, 372 flow [2023-08-04 06:23:51,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 153 transitions, 330 flow [2023-08-04 06:23:51,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 06:23:51,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 153 transitions, 330 flow [2023-08-04 06:23:51,040 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 153 transitions, 330 flow [2023-08-04 06:23:51,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 153 transitions, 330 flow [2023-08-04 06:23:51,139 INFO L124 PetriNetUnfolderBase]: 66/1038 cut-off events. [2023-08-04 06:23:51,139 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 06:23:51,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1110 conditions, 1038 events. 66/1038 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6229 event pairs, 0 based on Foata normal form. 0/933 useless extension candidates. Maximal degree in co-relation 779. Up to 54 conditions per place. [2023-08-04 06:23:51,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 4356 [2023-08-04 06:23:56,205 INFO L134 LiptonReduction]: Checked pairs total: 12829 [2023-08-04 06:23:56,205 INFO L136 LiptonReduction]: Total number of compositions: 117 [2023-08-04 06:23:56,207 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 06:23:56,208 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;@55f19fc7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 06:23:56,208 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 06:23:56,213 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 06:23:56,213 INFO L124 PetriNetUnfolderBase]: 1/32 cut-off events. [2023-08-04 06:23:56,213 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 06:23:56,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:23:56,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:23:56,214 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:23:56,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:23:56,214 INFO L85 PathProgramCache]: Analyzing trace with hash -193920974, now seen corresponding path program 1 times [2023-08-04 06:23:56,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:23:56,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267055587] [2023-08-04 06:23:56,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:23:56,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:23:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:23:56,249 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 06:23:56,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:23:56,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267055587] [2023-08-04 06:23:56,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267055587] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:23:56,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:23:56,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:23:56,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142563766] [2023-08-04 06:23:56,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:23:56,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:23:56,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:23:56,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:23:56,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:23:56,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 285 [2023-08-04 06:23:56,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 44 transitions, 112 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 06:23:56,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:23:56,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 285 [2023-08-04 06:23:56,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:24:19,934 INFO L124 PetriNetUnfolderBase]: 155552/202725 cut-off events. [2023-08-04 06:24:19,934 INFO L125 PetriNetUnfolderBase]: For 3249/3249 co-relation queries the response was YES. [2023-08-04 06:24:20,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 404858 conditions, 202725 events. 155552/202725 cut-off events. For 3249/3249 co-relation queries the response was YES. Maximal size of possible extension queue 5504. Compared 1289732 event pairs, 126978 based on Foata normal form. 5292/195429 useless extension candidates. Maximal degree in co-relation 115897. Up to 198414 conditions per place. [2023-08-04 06:24:21,100 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 37 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 06:24:21,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 47 transitions, 198 flow [2023-08-04 06:24:21,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:24:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:24:21,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 474 transitions. [2023-08-04 06:24:21,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5543859649122806 [2023-08-04 06:24:21,107 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 474 transitions. [2023-08-04 06:24:21,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 474 transitions. [2023-08-04 06:24:21,108 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:24:21,108 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 474 transitions. [2023-08-04 06:24:21,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.0) internal successors, (474), 3 states have internal predecessors, (474), 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 06:24:21,114 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:24:21,114 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:24:21,114 INFO L175 Difference]: Start difference. First operand has 56 places, 44 transitions, 112 flow. Second operand 3 states and 474 transitions. [2023-08-04 06:24:21,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 47 transitions, 198 flow [2023-08-04 06:24:21,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 198 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 06:24:21,118 INFO L231 Difference]: Finished difference. Result has 59 places, 43 transitions, 120 flow [2023-08-04 06:24:21,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=59, PETRI_TRANSITIONS=43} [2023-08-04 06:24:21,120 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 3 predicate places. [2023-08-04 06:24:21,120 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 43 transitions, 120 flow [2023-08-04 06:24:21,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 06:24:21,121 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:24:21,121 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:24:21,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 06:24:21,121 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:24:21,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:24:21,122 INFO L85 PathProgramCache]: Analyzing trace with hash 12197855, now seen corresponding path program 1 times [2023-08-04 06:24:21,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:24:21,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782721733] [2023-08-04 06:24:21,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:24:21,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:24:21,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:24:21,171 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 06:24:21,171 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:24:21,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782721733] [2023-08-04 06:24:21,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782721733] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:24:21,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1646905756] [2023-08-04 06:24:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:24:21,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:24:21,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:24:21,173 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 06:24:21,176 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 06:24:21,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:24:21,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:24:21,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:24:21,293 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 06:24:21,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:24:21,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1646905756] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:24:21,294 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:24:21,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:24:21,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193025488] [2023-08-04 06:24:21,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:24:21,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:24:21,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:24:21,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:24:21,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:24:21,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 285 [2023-08-04 06:24:21,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 43 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 06:24:21,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:24:21,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 285 [2023-08-04 06:24:21,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:24:39,995 INFO L124 PetriNetUnfolderBase]: 131638/169192 cut-off events. [2023-08-04 06:24:39,996 INFO L125 PetriNetUnfolderBase]: For 2907/2907 co-relation queries the response was YES. [2023-08-04 06:24:40,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340229 conditions, 169192 events. 131638/169192 cut-off events. For 2907/2907 co-relation queries the response was YES. Maximal size of possible extension queue 4570. Compared 1033801 event pairs, 104770 based on Foata normal form. 0/163432 useless extension candidates. Maximal degree in co-relation 340192. Up to 167305 conditions per place. [2023-08-04 06:24:41,122 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 43 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 06:24:41,122 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 52 transitions, 228 flow [2023-08-04 06:24:41,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:24:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:24:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-04 06:24:41,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5578947368421052 [2023-08-04 06:24:41,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-04 06:24:41,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-04 06:24:41,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:24:41,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-04 06:24:41,128 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:24:41,131 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:24:41,131 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:24:41,131 INFO L175 Difference]: Start difference. First operand has 59 places, 43 transitions, 120 flow. Second operand 3 states and 477 transitions. [2023-08-04 06:24:41,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 52 transitions, 228 flow [2023-08-04 06:24:41,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 52 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:24:41,134 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 130 flow [2023-08-04 06:24:41,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-04 06:24:41,136 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 4 predicate places. [2023-08-04 06:24:41,136 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 130 flow [2023-08-04 06:24:41,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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 06:24:41,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:24:41,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:24:41,146 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 06:24:41,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:24:41,347 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:24:41,347 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:24:41,347 INFO L85 PathProgramCache]: Analyzing trace with hash -1813800479, now seen corresponding path program 1 times [2023-08-04 06:24:41,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:24:41,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504614997] [2023-08-04 06:24:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:24:41,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:24:41,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:24:41,393 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 06:24:41,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:24:41,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504614997] [2023-08-04 06:24:41,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504614997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:24:41,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602532010] [2023-08-04 06:24:41,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:24:41,393 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:24:41,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:24:41,395 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:24:41,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 06:24:41,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:24:41,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 06:24:41,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:24:41,526 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 06:24:41,526 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 06:24:41,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602532010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:24:41,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 06:24:41,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 06:24:41,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171561138] [2023-08-04 06:24:41,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:24:41,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:24:41,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:24:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:24:41,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:24:41,536 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 285 [2023-08-04 06:24:41,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 06:24:41,537 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:24:41,537 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 285 [2023-08-04 06:24:41,537 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:24:59,414 INFO L124 PetriNetUnfolderBase]: 129222/165726 cut-off events. [2023-08-04 06:24:59,415 INFO L125 PetriNetUnfolderBase]: For 1589/1589 co-relation queries the response was YES. [2023-08-04 06:24:59,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 333925 conditions, 165726 events. 129222/165726 cut-off events. For 1589/1589 co-relation queries the response was YES. Maximal size of possible extension queue 4602. Compared 988630 event pairs, 101118 based on Foata normal form. 0/160671 useless extension candidates. Maximal degree in co-relation 95808. Up to 159021 conditions per place. [2023-08-04 06:25:00,297 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 50 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-04 06:25:00,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 59 transitions, 264 flow [2023-08-04 06:25:00,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:25:00,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:25:00,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 483 transitions. [2023-08-04 06:25:00,302 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5649122807017544 [2023-08-04 06:25:00,303 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 483 transitions. [2023-08-04 06:25:00,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 483 transitions. [2023-08-04 06:25:00,303 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:00,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 483 transitions. [2023-08-04 06:25:00,305 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 161.0) internal successors, (483), 3 states have internal predecessors, (483), 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 06:25:00,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:00,308 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:00,308 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 130 flow. Second operand 3 states and 483 transitions. [2023-08-04 06:25:00,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 59 transitions, 264 flow [2023-08-04 06:25:00,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 59 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:25:00,315 INFO L231 Difference]: Finished difference. Result has 62 places, 45 transitions, 140 flow [2023-08-04 06:25:00,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=62, PETRI_TRANSITIONS=45} [2023-08-04 06:25:00,317 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 6 predicate places. [2023-08-04 06:25:00,317 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 45 transitions, 140 flow [2023-08-04 06:25:00,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.33333333333334) internal successors, (445), 3 states have internal predecessors, (445), 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 06:25:00,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:00,318 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 06:25:00,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:00,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:00,527 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:00,528 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:00,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1535680447, now seen corresponding path program 1 times [2023-08-04 06:25:00,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:00,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857739605] [2023-08-04 06:25:00,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:00,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:00,582 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 06:25:00,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857739605] [2023-08-04 06:25:00,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857739605] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:25:00,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1577817500] [2023-08-04 06:25:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:00,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:00,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:00,584 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:25:00,586 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 06:25:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:00,713 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:25:00,714 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:25:00,735 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 06:25:00,736 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:25:00,990 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 06:25:00,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1577817500] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:25:00,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:25:00,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 06:25:00,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551169098] [2023-08-04 06:25:00,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:25:00,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:25:00,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:00,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:25:00,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:25:01,015 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 285 [2023-08-04 06:25:01,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 45 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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 06:25:01,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:01,016 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 285 [2023-08-04 06:25:01,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:15,374 INFO L124 PetriNetUnfolderBase]: 101278/128552 cut-off events. [2023-08-04 06:25:15,374 INFO L125 PetriNetUnfolderBase]: For 9501/9501 co-relation queries the response was YES. [2023-08-04 06:25:15,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267146 conditions, 128552 events. 101278/128552 cut-off events. For 9501/9501 co-relation queries the response was YES. Maximal size of possible extension queue 3717. Compared 730579 event pairs, 66426 based on Foata normal form. 3/128366 useless extension candidates. Maximal degree in co-relation 94838. Up to 127384 conditions per place. [2023-08-04 06:25:15,992 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 42 selfloop transitions, 3 changer transitions 1/53 dead transitions. [2023-08-04 06:25:15,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 53 transitions, 248 flow [2023-08-04 06:25:15,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:25:15,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:25:15,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 617 transitions. [2023-08-04 06:25:15,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5412280701754386 [2023-08-04 06:25:15,994 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 617 transitions. [2023-08-04 06:25:15,994 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 617 transitions. [2023-08-04 06:25:15,995 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:15,995 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 617 transitions. [2023-08-04 06:25:15,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.25) internal successors, (617), 4 states have internal predecessors, (617), 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 06:25:15,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:15,998 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:15,999 INFO L175 Difference]: Start difference. First operand has 62 places, 45 transitions, 140 flow. Second operand 4 states and 617 transitions. [2023-08-04 06:25:15,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 53 transitions, 248 flow [2023-08-04 06:25:16,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:25:16,012 INFO L231 Difference]: Finished difference. Result has 66 places, 45 transitions, 152 flow [2023-08-04 06:25:16,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=152, PETRI_PLACES=66, PETRI_TRANSITIONS=45} [2023-08-04 06:25:16,012 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 10 predicate places. [2023-08-04 06:25:16,012 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 45 transitions, 152 flow [2023-08-04 06:25:16,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.0) internal successors, (735), 5 states have internal predecessors, (735), 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 06:25:16,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:16,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:16,019 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:16,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:16,218 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:16,218 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:16,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1622113811, now seen corresponding path program 1 times [2023-08-04 06:25:16,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:16,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039263540] [2023-08-04 06:25:16,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:16,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:16,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:16,282 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 06:25:16,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:16,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039263540] [2023-08-04 06:25:16,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039263540] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:25:16,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1278874443] [2023-08-04 06:25:16,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:16,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:16,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:16,284 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:25:16,291 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 06:25:16,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:16,415 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:25:16,416 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:25:16,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 06:25:16,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:25:16,442 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-04 06:25:16,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1278874443] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:25:16,442 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:25:16,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:25:16,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814459064] [2023-08-04 06:25:16,442 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:25:16,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:25:16,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:16,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:25:16,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:25:16,460 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 285 [2023-08-04 06:25:16,460 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 45 transitions, 152 flow. Second operand has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 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 06:25:16,461 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:16,461 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 285 [2023-08-04 06:25:16,461 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:28,669 INFO L124 PetriNetUnfolderBase]: 84352/106246 cut-off events. [2023-08-04 06:25:28,669 INFO L125 PetriNetUnfolderBase]: For 6813/6813 co-relation queries the response was YES. [2023-08-04 06:25:28,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220094 conditions, 106246 events. 84352/106246 cut-off events. For 6813/6813 co-relation queries the response was YES. Maximal size of possible extension queue 3428. Compared 591916 event pairs, 52642 based on Foata normal form. 36/106129 useless extension candidates. Maximal degree in co-relation 78012. Up to 104044 conditions per place. [2023-08-04 06:25:29,382 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 53 selfloop transitions, 3 changer transitions 1/64 dead transitions. [2023-08-04 06:25:29,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 304 flow [2023-08-04 06:25:29,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:25:29,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:25:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 628 transitions. [2023-08-04 06:25:29,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5508771929824562 [2023-08-04 06:25:29,384 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 628 transitions. [2023-08-04 06:25:29,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 628 transitions. [2023-08-04 06:25:29,384 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:29,384 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 628 transitions. [2023-08-04 06:25:29,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.0) internal successors, (628), 4 states have internal predecessors, (628), 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 06:25:29,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:29,388 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:29,388 INFO L175 Difference]: Start difference. First operand has 66 places, 45 transitions, 152 flow. Second operand 4 states and 628 transitions. [2023-08-04 06:25:29,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 304 flow [2023-08-04 06:25:29,396 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 297 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:25:29,397 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 159 flow [2023-08-04 06:25:29,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-08-04 06:25:29,398 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 12 predicate places. [2023-08-04 06:25:29,398 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 159 flow [2023-08-04 06:25:29,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.2) internal successors, (736), 5 states have internal predecessors, (736), 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 06:25:29,399 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:29,399 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:29,404 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:29,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:29,605 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:29,605 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:29,606 INFO L85 PathProgramCache]: Analyzing trace with hash -27150258, now seen corresponding path program 1 times [2023-08-04 06:25:29,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:29,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652052835] [2023-08-04 06:25:29,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:29,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:29,671 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:25:29,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:29,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652052835] [2023-08-04 06:25:29,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652052835] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:25:29,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586172561] [2023-08-04 06:25:29,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:29,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:25:29,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:25:29,673 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:25:29,694 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 06:25:29,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:29,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 06:25:29,796 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:25:29,818 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:25:29,819 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:25:29,832 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 06:25:29,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586172561] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:25:29,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:25:29,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 06:25:29,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136316138] [2023-08-04 06:25:29,833 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:25:29,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 06:25:29,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:29,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 06:25:29,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 06:25:29,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 285 [2023-08-04 06:25:29,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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 06:25:29,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:29,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 285 [2023-08-04 06:25:29,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:40,215 INFO L124 PetriNetUnfolderBase]: 75688/95143 cut-off events. [2023-08-04 06:25:40,215 INFO L125 PetriNetUnfolderBase]: For 6040/6040 co-relation queries the response was YES. [2023-08-04 06:25:40,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197815 conditions, 95143 events. 75688/95143 cut-off events. For 6040/6040 co-relation queries the response was YES. Maximal size of possible extension queue 3191. Compared 509965 event pairs, 35320 based on Foata normal form. 576/95566 useless extension candidates. Maximal degree in co-relation 70042. Up to 62836 conditions per place. [2023-08-04 06:25:40,869 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 65 selfloop transitions, 3 changer transitions 1/76 dead transitions. [2023-08-04 06:25:40,870 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 76 transitions, 359 flow [2023-08-04 06:25:40,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 06:25:40,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 06:25:40,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 640 transitions. [2023-08-04 06:25:40,871 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5614035087719298 [2023-08-04 06:25:40,871 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 640 transitions. [2023-08-04 06:25:40,871 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 640 transitions. [2023-08-04 06:25:40,872 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:40,872 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 640 transitions. [2023-08-04 06:25:40,873 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:40,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:40,875 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:40,875 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 159 flow. Second operand 4 states and 640 transitions. [2023-08-04 06:25:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 76 transitions, 359 flow [2023-08-04 06:25:40,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 76 transitions, 352 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 06:25:40,880 INFO L231 Difference]: Finished difference. Result has 70 places, 45 transitions, 166 flow [2023-08-04 06:25:40,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=70, PETRI_TRANSITIONS=45} [2023-08-04 06:25:40,881 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 14 predicate places. [2023-08-04 06:25:40,881 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 45 transitions, 166 flow [2023-08-04 06:25:40,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 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 06:25:40,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:40,882 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:40,887 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 06:25:41,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-04 06:25:41,083 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:41,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:41,083 INFO L85 PathProgramCache]: Analyzing trace with hash 950926061, now seen corresponding path program 1 times [2023-08-04 06:25:41,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:41,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287211562] [2023-08-04 06:25:41,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:41,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:41,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:41,255 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 06:25:41,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:41,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287211562] [2023-08-04 06:25:41,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287211562] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:25:41,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:25:41,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:25:41,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691849761] [2023-08-04 06:25:41,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:25:41,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:25:41,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:41,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:25:41,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:25:41,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 285 [2023-08-04 06:25:41,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 45 transitions, 166 flow. Second operand has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 06:25:41,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:41,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 285 [2023-08-04 06:25:41,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:25:56,426 INFO L124 PetriNetUnfolderBase]: 112456/140506 cut-off events. [2023-08-04 06:25:56,427 INFO L125 PetriNetUnfolderBase]: For 44323/44323 co-relation queries the response was YES. [2023-08-04 06:25:56,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306595 conditions, 140506 events. 112456/140506 cut-off events. For 44323/44323 co-relation queries the response was YES. Maximal size of possible extension queue 4224. Compared 786282 event pairs, 21886 based on Foata normal form. 3600/144016 useless extension candidates. Maximal degree in co-relation 108356. Up to 110692 conditions per place. [2023-08-04 06:25:57,113 INFO L140 encePairwiseOnDemand]: 280/285 looper letters, 63 selfloop transitions, 3 changer transitions 33/104 dead transitions. [2023-08-04 06:25:57,113 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 104 transitions, 529 flow [2023-08-04 06:25:57,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 06:25:57,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 06:25:57,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 816 transitions. [2023-08-04 06:25:57,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5726315789473684 [2023-08-04 06:25:57,115 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 816 transitions. [2023-08-04 06:25:57,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 816 transitions. [2023-08-04 06:25:57,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:25:57,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 816 transitions. [2023-08-04 06:25:57,117 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.2) internal successors, (816), 5 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:25:57,119 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 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 06:25:57,120 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 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 06:25:57,120 INFO L175 Difference]: Start difference. First operand has 70 places, 45 transitions, 166 flow. Second operand 5 states and 816 transitions. [2023-08-04 06:25:57,120 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 104 transitions, 529 flow [2023-08-04 06:25:57,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 104 transitions, 515 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 06:25:57,160 INFO L231 Difference]: Finished difference. Result has 74 places, 47 transitions, 186 flow [2023-08-04 06:25:57,160 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=186, PETRI_PLACES=74, PETRI_TRANSITIONS=47} [2023-08-04 06:25:57,161 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 18 predicate places. [2023-08-04 06:25:57,161 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 47 transitions, 186 flow [2023-08-04 06:25:57,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 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 06:25:57,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:25:57,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:25:57,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 06:25:57,162 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:25:57,162 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:25:57,162 INFO L85 PathProgramCache]: Analyzing trace with hash -1557616180, now seen corresponding path program 1 times [2023-08-04 06:25:57,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:25:57,162 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473476920] [2023-08-04 06:25:57,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:25:57,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:25:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:25:57,470 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 06:25:57,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:25:57,471 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473476920] [2023-08-04 06:25:57,471 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [473476920] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:25:57,471 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:25:57,471 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:25:57,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1880865577] [2023-08-04 06:25:57,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:25:57,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 06:25:57,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:25:57,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 06:25:57,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 06:25:57,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 147 out of 285 [2023-08-04 06:25:57,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 47 transitions, 186 flow. Second operand has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 06:25:57,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:25:57,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 147 of 285 [2023-08-04 06:25:57,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:10,319 INFO L124 PetriNetUnfolderBase]: 80956/104119 cut-off events. [2023-08-04 06:26:10,319 INFO L125 PetriNetUnfolderBase]: For 33132/33132 co-relation queries the response was YES. [2023-08-04 06:26:10,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229553 conditions, 104119 events. 80956/104119 cut-off events. For 33132/33132 co-relation queries the response was YES. Maximal size of possible extension queue 3502. Compared 603553 event pairs, 58388 based on Foata normal form. 2640/105440 useless extension candidates. Maximal degree in co-relation 229474. Up to 84165 conditions per place. [2023-08-04 06:26:10,966 INFO L140 encePairwiseOnDemand]: 280/285 looper letters, 67 selfloop transitions, 3 changer transitions 31/110 dead transitions. [2023-08-04 06:26:10,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 110 transitions, 579 flow [2023-08-04 06:26:10,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 06:26:10,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 06:26:10,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 832 transitions. [2023-08-04 06:26:10,969 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.583859649122807 [2023-08-04 06:26:10,969 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 832 transitions. [2023-08-04 06:26:10,969 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 832 transitions. [2023-08-04 06:26:10,969 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:10,969 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 832 transitions. [2023-08-04 06:26:10,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 166.4) internal successors, (832), 5 states have internal predecessors, (832), 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 06:26:10,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 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 06:26:10,973 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 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 06:26:10,973 INFO L175 Difference]: Start difference. First operand has 74 places, 47 transitions, 186 flow. Second operand 5 states and 832 transitions. [2023-08-04 06:26:10,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 110 transitions, 579 flow [2023-08-04 06:26:11,858 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 110 transitions, 574 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 06:26:11,860 INFO L231 Difference]: Finished difference. Result has 77 places, 49 transitions, 208 flow [2023-08-04 06:26:11,860 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=208, PETRI_PLACES=77, PETRI_TRANSITIONS=49} [2023-08-04 06:26:11,861 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 21 predicate places. [2023-08-04 06:26:11,861 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 49 transitions, 208 flow [2023-08-04 06:26:11,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 152.0) internal successors, (608), 4 states have internal predecessors, (608), 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 06:26:11,861 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:11,861 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:26:11,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-04 06:26:11,862 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:11,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:11,862 INFO L85 PathProgramCache]: Analyzing trace with hash -1306521964, now seen corresponding path program 1 times [2023-08-04 06:26:11,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:11,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862607892] [2023-08-04 06:26:11,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:11,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:11,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:12,127 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 06:26:12,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:12,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862607892] [2023-08-04 06:26:12,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862607892] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 06:26:12,128 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 06:26:12,128 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 06:26:12,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122217209] [2023-08-04 06:26:12,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 06:26:12,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 06:26:12,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:12,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 06:26:12,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 06:26:12,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 285 [2023-08-04 06:26:12,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 49 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 06:26:12,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:12,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 285 [2023-08-04 06:26:12,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:21,640 INFO L124 PetriNetUnfolderBase]: 64432/81785 cut-off events. [2023-08-04 06:26:21,641 INFO L125 PetriNetUnfolderBase]: For 53089/53089 co-relation queries the response was YES. [2023-08-04 06:26:21,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 209356 conditions, 81785 events. 64432/81785 cut-off events. For 53089/53089 co-relation queries the response was YES. Maximal size of possible extension queue 2649. Compared 446929 event pairs, 14348 based on Foata normal form. 360/81019 useless extension candidates. Maximal degree in co-relation 175515. Up to 75156 conditions per place. [2023-08-04 06:26:22,206 INFO L140 encePairwiseOnDemand]: 277/285 looper letters, 67 selfloop transitions, 7 changer transitions 0/83 dead transitions. [2023-08-04 06:26:22,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 83 transitions, 497 flow [2023-08-04 06:26:22,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 06:26:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 06:26:22,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 488 transitions. [2023-08-04 06:26:22,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5707602339181287 [2023-08-04 06:26:22,208 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 488 transitions. [2023-08-04 06:26:22,208 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 488 transitions. [2023-08-04 06:26:22,208 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:22,208 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 488 transitions. [2023-08-04 06:26:22,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 162.66666666666666) internal successors, (488), 3 states have internal predecessors, (488), 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 06:26:22,211 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:22,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 06:26:22,211 INFO L175 Difference]: Start difference. First operand has 77 places, 49 transitions, 208 flow. Second operand 3 states and 488 transitions. [2023-08-04 06:26:22,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 83 transitions, 497 flow [2023-08-04 06:26:22,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 83 transitions, 490 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 06:26:22,253 INFO L231 Difference]: Finished difference. Result has 76 places, 55 transitions, 250 flow [2023-08-04 06:26:22,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=203, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=76, PETRI_TRANSITIONS=55} [2023-08-04 06:26:22,254 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 20 predicate places. [2023-08-04 06:26:22,254 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 55 transitions, 250 flow [2023-08-04 06:26:22,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 148.0) internal successors, (444), 3 states have internal predecessors, (444), 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 06:26:22,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:22,254 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:26:22,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 06:26:22,254 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:22,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:22,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1553295143, now seen corresponding path program 1 times [2023-08-04 06:26:22,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:22,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2024883772] [2023-08-04 06:26:22,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:22,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:22,424 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 06:26:22,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:22,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2024883772] [2023-08-04 06:26:22,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2024883772] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:22,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113616280] [2023-08-04 06:26:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:22,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:22,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:22,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:26:22,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 06:26:22,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:22,587 INFO L262 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-04 06:26:22,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:22,631 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 06:26:22,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:26:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 06:26:22,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113616280] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:26:22,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:26:22,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-04 06:26:22,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205101032] [2023-08-04 06:26:22,713 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:26:22,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 06:26:22,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:22,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 06:26:22,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-08-04 06:26:22,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 285 [2023-08-04 06:26:22,753 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 55 transitions, 250 flow. Second operand has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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 06:26:22,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:26:22,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 285 [2023-08-04 06:26:22,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:26:38,238 INFO L124 PetriNetUnfolderBase]: 104837/137624 cut-off events. [2023-08-04 06:26:38,239 INFO L125 PetriNetUnfolderBase]: For 110865/110865 co-relation queries the response was YES. [2023-08-04 06:26:38,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 383419 conditions, 137624 events. 104837/137624 cut-off events. For 110865/110865 co-relation queries the response was YES. Maximal size of possible extension queue 4078. Compared 855905 event pairs, 3100 based on Foata normal form. 5985/142684 useless extension candidates. Maximal degree in co-relation 225471. Up to 42330 conditions per place. [2023-08-04 06:26:39,083 INFO L140 encePairwiseOnDemand]: 271/285 looper letters, 283 selfloop transitions, 62 changer transitions 28/380 dead transitions. [2023-08-04 06:26:39,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 380 transitions, 2321 flow [2023-08-04 06:26:39,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-04 06:26:39,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-04 06:26:39,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2217 transitions. [2023-08-04 06:26:39,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5556390977443609 [2023-08-04 06:26:39,087 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2217 transitions. [2023-08-04 06:26:39,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2217 transitions. [2023-08-04 06:26:39,091 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 06:26:39,091 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2217 transitions. [2023-08-04 06:26:39,095 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 158.35714285714286) internal successors, (2217), 14 states have internal predecessors, (2217), 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 06:26:39,099 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 285.0) internal successors, (4275), 15 states have internal predecessors, (4275), 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 06:26:39,100 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 285.0) internal successors, (4275), 15 states have internal predecessors, (4275), 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 06:26:39,100 INFO L175 Difference]: Start difference. First operand has 76 places, 55 transitions, 250 flow. Second operand 14 states and 2217 transitions. [2023-08-04 06:26:39,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 380 transitions, 2321 flow [2023-08-04 06:26:39,181 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 380 transitions, 2304 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 06:26:39,184 INFO L231 Difference]: Finished difference. Result has 100 places, 119 transitions, 792 flow [2023-08-04 06:26:39,184 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=243, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=792, PETRI_PLACES=100, PETRI_TRANSITIONS=119} [2023-08-04 06:26:39,185 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 44 predicate places. [2023-08-04 06:26:39,185 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 119 transitions, 792 flow [2023-08-04 06:26:39,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 142.375) internal successors, (1139), 8 states have internal predecessors, (1139), 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 06:26:39,186 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 06:26:39,186 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 06:26:39,195 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 06:26:39,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 06:26:39,393 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 06:26:39,393 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 06:26:39,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1177180505, now seen corresponding path program 1 times [2023-08-04 06:26:39,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 06:26:39,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179629637] [2023-08-04 06:26:39,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:39,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 06:26:39,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:42,112 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 06:26:42,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 06:26:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179629637] [2023-08-04 06:26:42,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1179629637] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 06:26:42,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275216420] [2023-08-04 06:26:42,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 06:26:42,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 06:26:42,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 06:26:42,118 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 06:26:42,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 06:26:42,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 06:26:42,275 INFO L262 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 85 conjunts are in the unsatisfiable core [2023-08-04 06:26:42,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 06:26:42,334 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-04 06:26:42,335 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-04 06:26:42,663 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 37 [2023-08-04 06:26:42,780 INFO L322 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-08-04 06:26:42,780 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2023-08-04 06:26:42,848 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 06:26:43,056 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 06:26:43,181 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-04 06:26:43,182 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-04 06:26:43,229 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 06:26:43,342 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 06:26:43,653 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 40 [2023-08-04 06:26:43,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2023-08-04 06:26:43,912 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 59 [2023-08-04 06:26:43,950 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 06:26:43,950 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 06:26:51,529 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification that was a NOOP. DAG size: 74 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:26:56,637 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-04 06:26:56,638 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 479 treesize of output 439 [2023-08-04 06:26:56,659 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 684 treesize of output 648 [2023-08-04 06:26:56,692 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 493 treesize of output 491 [2023-08-04 06:26:56,709 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 491 treesize of output 487 [2023-08-04 06:26:56,726 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 487 treesize of output 485 [2023-08-04 06:26:56,742 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 485 treesize of output 481 [2023-08-04 06:26:56,759 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 481 treesize of output 479 [2023-08-04 06:26:56,775 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 479 treesize of output 475 [2023-08-04 06:26:56,792 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 475 treesize of output 471 [2023-08-04 06:26:56,808 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 471 treesize of output 469 [2023-08-04 06:26:56,826 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 469 treesize of output 467 [2023-08-04 06:26:56,842 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 467 treesize of output 463 [2023-08-04 06:26:58,664 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 06:26:58,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275216420] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 06:26:58,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 06:26:58,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 13] total 35 [2023-08-04 06:26:58,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106407610] [2023-08-04 06:26:58,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 06:26:58,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-04 06:26:58,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 06:26:58,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-04 06:26:58,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=1143, Unknown=7, NotChecked=0, Total=1332 [2023-08-04 06:27:01,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 285 [2023-08-04 06:27:01,624 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 119 transitions, 792 flow. Second operand has 37 states, 37 states have (on average 104.48648648648648) internal successors, (3866), 37 states have internal predecessors, (3866), 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 06:27:01,624 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 06:27:01,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 285 [2023-08-04 06:27:01,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 06:27:22,635 WARN L233 SmtUtils]: Spent 8.19s on a formula simplification. DAG size of input: 331 DAG size of output: 211 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:27:39,400 WARN L233 SmtUtils]: Spent 16.62s on a formula simplification. DAG size of input: 359 DAG size of output: 149 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:27:46,466 WARN L233 SmtUtils]: Spent 6.90s on a formula simplification. DAG size of input: 350 DAG size of output: 142 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:27:53,088 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 301 DAG size of output: 86 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:28:14,178 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 351 DAG size of output: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:28:32,684 WARN L233 SmtUtils]: Spent 16.77s on a formula simplification. DAG size of input: 329 DAG size of output: 224 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:28:50,689 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 315 DAG size of output: 124 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:29:14,363 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 347 DAG size of output: 153 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:29:29,661 WARN L233 SmtUtils]: Spent 10.95s on a formula simplification. DAG size of input: 249 DAG size of output: 191 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:29:46,031 WARN L233 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 305 DAG size of output: 113 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:29:53,786 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 307 DAG size of output: 133 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:30:06,504 WARN L233 SmtUtils]: Spent 11.20s on a formula simplification. DAG size of input: 201 DAG size of output: 169 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:30:13,977 WARN L233 SmtUtils]: Spent 7.09s on a formula simplification. DAG size of input: 174 DAG size of output: 174 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:30:31,244 WARN L233 SmtUtils]: Spent 11.11s on a formula simplification. DAG size of input: 296 DAG size of output: 191 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:30:44,271 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 363 DAG size of output: 149 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:30:54,996 WARN L233 SmtUtils]: Spent 5.01s on a formula simplification. DAG size of input: 355 DAG size of output: 157 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:31:02,287 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 352 DAG size of output: 155 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:31:05,788 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:31:15,621 WARN L233 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 249 DAG size of output: 169 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:31:17,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:31:37,998 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 272 DAG size of output: 192 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:31:42,337 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:31:44,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:31:57,271 WARN L233 SmtUtils]: Spent 6.66s on a formula simplification. DAG size of input: 346 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:32:18,627 WARN L233 SmtUtils]: Spent 18.70s on a formula simplification. DAG size of input: 282 DAG size of output: 209 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:32:35,704 WARN L233 SmtUtils]: Spent 15.15s on a formula simplification. DAG size of input: 330 DAG size of output: 225 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:32:44,191 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 362 DAG size of output: 140 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:33:02,639 WARN L233 SmtUtils]: Spent 15.43s on a formula simplification. DAG size of input: 334 DAG size of output: 230 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:33:25,328 WARN L233 SmtUtils]: Spent 14.33s on a formula simplification. DAG size of input: 279 DAG size of output: 199 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:34:03,451 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 340 DAG size of output: 179 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:34:15,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:34:25,089 WARN L233 SmtUtils]: Spent 6.85s on a formula simplification. DAG size of input: 354 DAG size of output: 150 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:34:43,108 WARN L233 SmtUtils]: Spent 7.46s on a formula simplification. DAG size of input: 326 DAG size of output: 221 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:35:11,586 WARN L233 SmtUtils]: Spent 24.37s on a formula simplification. DAG size of input: 333 DAG size of output: 228 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:35:15,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:35:41,725 WARN L233 SmtUtils]: Spent 6.87s on a formula simplification. DAG size of input: 350 DAG size of output: 138 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:35:57,043 WARN L233 SmtUtils]: Spent 13.79s on a formula simplification. DAG size of input: 235 DAG size of output: 202 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:36:07,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:36:15,088 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 364 DAG size of output: 88 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:36:24,119 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:36:27,836 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-04 06:36:44,531 WARN L233 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 283 DAG size of output: 220 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-08-04 06:36:54,146 WARN L233 SmtUtils]: Spent 9.12s on a formula simplification. DAG size of input: 348 DAG size of output: 151 (called from [L 376] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) Received shutdown request... [2023-08-04 06:37:00,001 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 06:37:00,002 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 06:37:01,012 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 06:37:01,203 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2023-08-04 06:37:01,237 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 [2023-08-04 06:37:01,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2023-08-04 06:37:01,238 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 06:37:01,239 FATAL L? ?]: An unrecoverable error occured during an interaction with an SMT solver: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Not enough levels on assertion stack at de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) at de.uni_freiburg.informatik.ultimate.smtsolver.external.Scriptor.pop(Scriptor.java:138) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.arrays.DiffWrapperScript.pop(DiffWrapperScript.java:99) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.scripttransfer.HistoryRecordingScript.pop(HistoryRecordingScript.java:117) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.pop(WrapperScript.java:153) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.pop(UndoableWrapperScript.java:61) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.UndoableWrapperScript.restore(UndoableWrapperScript.java:87) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:263) at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.simplify(SmtUtils.java:167) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate(PredicateUnifier.java:376) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicateForConjunction(PredicateUnifier.java:232) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.getOrConstructPredicate(DeterministicInterpolantAutomaton.java:282) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.DeterministicInterpolantAutomaton.constructSuccessorsAndTransitions(DeterministicInterpolantAutomaton.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.BasicAbstractInterpolantAutomaton.computeSuccs(BasicAbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:233) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.interpolantautomata.transitionappender.AbstractInterpolantAutomaton.internalSuccessors(AbstractInterpolantAutomaton.java:1) at de.uni_freiburg.informatik.ultimate.automata.nestedword.NestedWordAutomataUtils.getSuccessorState(NestedWordAutomataUtils.java:482) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getOrConstructTransition(DifferencePetriNet.java:279) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePetriNet$DifferenceSuccessorTransitionProvider.getTransitions(DifferencePetriNet.java:261) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.addFullyInstantiatedCandidate(PossibleExtensions.java:168) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:195) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.evolveCandidate(PossibleExtensions.java:210) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PossibleExtensions.update(PossibleExtensions.java:135) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.computeUnfoldingHelper(PetriNetUnfolderBase.java:226) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.computeUnfolding(PetriNetUnfolderBase.java:183) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolderBase.(PetriNetUnfolderBase.java:123) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.PetriNetUnfolder.(PetriNetUnfolder.java:72) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:76) at de.uni_freiburg.informatik.ultimate.automata.petrinet.unfolding.FinitePrefix.(FinitePrefix.java:64) at de.uni_freiburg.informatik.ultimate.automata.petrinet.operations.DifferencePairwiseOnDemand.(DifferencePairwiseOnDemand.java:128) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.enhanceAnddeterminizeInterpolantAutomaton(CegarLoopForPetriNet.java:481) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.concurrency.CegarLoopForPetriNet.refineAbstraction(CegarLoopForPetriNet.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.refineAbstractionInternal(AbstractCegarLoop.java:487) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:415) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:302) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseConcurrentProgram(TraceAbstractionStarter.java:225) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:154) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:167) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:150) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:127) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:233) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:227) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:144) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:319) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2023-08-04 06:37:01,243 INFO L158 Benchmark]: Toolchain (without parser) took 805001.19ms. Allocated memory was 494.9MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 444.7MB in the beginning and 12.4GB in the end (delta: -12.0GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-04 06:37:01,243 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 352.3MB. Free memory was 305.2MB in the beginning and 305.2MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 06:37:01,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 473.18ms. Allocated memory is still 494.9MB. Free memory was 444.7MB in the beginning and 420.2MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-04 06:37:01,243 INFO L158 Benchmark]: Boogie Procedure Inliner took 79.11ms. Allocated memory is still 494.9MB. Free memory was 420.2MB in the beginning and 417.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:37:01,244 INFO L158 Benchmark]: Boogie Preprocessor took 70.03ms. Allocated memory is still 494.9MB. Free memory was 417.5MB in the beginning and 415.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 06:37:01,244 INFO L158 Benchmark]: RCFGBuilder took 914.27ms. Allocated memory is still 494.9MB. Free memory was 415.4MB in the beginning and 416.4MB in the end (delta: -1.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 06:37:01,244 INFO L158 Benchmark]: TraceAbstraction took 803458.13ms. Allocated memory was 494.9MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 416.4MB in the beginning and 12.4GB in the end (delta: -12.0GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. [2023-08-04 06:37:01,245 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 352.3MB. Free memory was 305.2MB in the beginning and 305.2MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 473.18ms. Allocated memory is still 494.9MB. Free memory was 444.7MB in the beginning and 420.2MB in the end (delta: 24.5MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 79.11ms. Allocated memory is still 494.9MB. Free memory was 420.2MB in the beginning and 417.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 70.03ms. Allocated memory is still 494.9MB. Free memory was 417.5MB in the beginning and 415.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 914.27ms. Allocated memory is still 494.9MB. Free memory was 415.4MB in the beginning and 416.4MB in the end (delta: -1.0MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 803458.13ms. Allocated memory was 494.9MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 416.4MB in the beginning and 12.4GB in the end (delta: -12.0GB). Peak memory consumption was 3.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.4s, 134 PlacesBefore, 34 PlacesAfterwards, 131 TransitionsBefore, 28 TransitionsAfterwards, 1760 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 111 TotalNumberOfCompositions, 4362 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1871, independent: 1690, independent conditional: 0, independent unconditional: 1690, dependent: 181, dependent conditional: 0, dependent unconditional: 181, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 919, independent: 889, independent conditional: 0, independent unconditional: 889, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1871, independent: 801, independent conditional: 0, independent unconditional: 801, dependent: 151, dependent conditional: 0, dependent unconditional: 151, unknown: 919, unknown conditional: 0, unknown unconditional: 919] , Statistics on independence cache: Total cache size (in pairs): 71, Positive cache size: 57, Positive conditional cache size: 0, Positive unconditional cache size: 57, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.3s, 122 PlacesBefore, 30 PlacesAfterwards, 117 TransitionsBefore, 23 TransitionsAfterwards, 1190 CoEnabledTransitionPairs, 8 FixpointIterations, 56 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 99 TotalNumberOfCompositions, 2662 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1183, independent: 1046, independent conditional: 0, independent unconditional: 1046, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 633, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 19, dependent conditional: 0, dependent unconditional: 19, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1183, independent: 432, independent conditional: 0, independent unconditional: 432, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 633, unknown conditional: 0, unknown unconditional: 633] , Statistics on independence cache: Total cache size (in pairs): 55, Positive cache size: 46, Positive conditional cache size: 0, Positive unconditional cache size: 46, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.2s, 162 PlacesBefore, 56 PlacesAfterwards, 153 TransitionsBefore, 44 TransitionsAfterwards, 4356 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 117 TotalNumberOfCompositions, 12829 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4530, independent: 4225, independent conditional: 0, independent unconditional: 4225, dependent: 305, dependent conditional: 0, dependent unconditional: 305, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2109, independent: 2051, independent conditional: 0, independent unconditional: 2051, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4530, independent: 2174, independent conditional: 0, independent unconditional: 2174, dependent: 247, dependent conditional: 0, dependent unconditional: 247, unknown: 2109, unknown conditional: 0, unknown unconditional: 2109] , Statistics on independence cache: Total cache size (in pairs): 171, Positive cache size: 146, Positive conditional cache size: 0, Positive unconditional cache size: 146, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - ExceptionOrErrorResult: SMTLIBException: Not enough levels on assertion stack de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMTLIBException: Not enough levels on assertion stack: de.uni_freiburg.informatik.ultimate.logic.NoopScript.pop(NoopScript.java:272) RESULT: Ultimate could not prove your program: Toolchain returned no result. Completed graceful shutdown