/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 00:43:07,830 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 00:43:07,892 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 00:43:07,895 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 00:43:07,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 00:43:07,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 00:43:07,896 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 00:43:07,917 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 00:43:07,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 00:43:07,920 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 00:43:07,921 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 00:43:07,921 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 00:43:07,922 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 00:43:07,922 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 00:43:07,923 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 00:43:07,923 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 00:43:07,923 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 00:43:07,923 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 00:43:07,923 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 00:43:07,923 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 00:43:07,924 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 00:43:07,924 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 00:43:07,924 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 00:43:07,924 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 00:43:07,925 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 00:43:07,925 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 00:43:07,925 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 00:43:07,925 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 00:43:07,925 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 00:43:07,926 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 00:43:07,926 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:43:07,927 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 00:43:07,927 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 00:43:07,928 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 00:43:07,928 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 00:43:07,928 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 00:43:08,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 00:43:08,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 00:43:08,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 00:43:08,148 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 00:43:08,148 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 00:43:08,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 00:43:09,056 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 00:43:09,340 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 00:43:09,341 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 00:43:09,356 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdda1f23/81e5df4768b14f5f97cd8da0ac3a39ea/FLAGc1721ef5f [2023-08-04 00:43:09,367 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6fdda1f23/81e5df4768b14f5f97cd8da0ac3a39ea [2023-08-04 00:43:09,369 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 00:43:09,370 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 00:43:09,370 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 00:43:09,370 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 00:43:09,374 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 00:43:09,374 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,375 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28cc9bcc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09, skipping insertion in model container [2023-08-04 00:43:09,375 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,407 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 00:43:09,531 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_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 00:43:09,659 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:43:09,667 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 00:43:09,676 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_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 00:43:09,696 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 00:43:09,697 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 00:43:09,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:43:09,732 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:43:09,732 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:43:09,736 INFO L206 MainTranslator]: Completed translation [2023-08-04 00:43:09,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09 WrapperNode [2023-08-04 00:43:09,737 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 00:43:09,738 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 00:43:09,738 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 00:43:09,738 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 00:43:09,742 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,763 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,780 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 95 [2023-08-04 00:43:09,780 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 00:43:09,780 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 00:43:09,781 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 00:43:09,781 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 00:43:09,786 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,786 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,799 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,799 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,802 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,804 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,805 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,805 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,807 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 00:43:09,807 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 00:43:09,807 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 00:43:09,807 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 00:43:09,808 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (1/1) ... [2023-08-04 00:43:09,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:43:09,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:09,836 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 00:43:09,843 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 00:43:09,860 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 00:43:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 00:43:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 00:43:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 00:43:09,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 00:43:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 00:43:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 00:43:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 00:43:09,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 00:43:09,862 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 00:43:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 00:43:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 00:43:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 00:43:09,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 00:43:09,863 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 00:43:09,864 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 00:43:09,981 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 00:43:09,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 00:43:10,152 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 00:43:10,156 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 00:43:10,157 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 00:43:10,158 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:43:10 BoogieIcfgContainer [2023-08-04 00:43:10,158 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 00:43:10,160 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 00:43:10,160 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 00:43:10,162 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 00:43:10,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 12:43:09" (1/3) ... [2023-08-04 00:43:10,162 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad8a366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:43:10, skipping insertion in model container [2023-08-04 00:43:10,162 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:43:09" (2/3) ... [2023-08-04 00:43:10,163 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ad8a366 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:43:10, skipping insertion in model container [2023-08-04 00:43:10,163 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:43:10" (3/3) ... [2023-08-04 00:43:10,164 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe018_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 00:43:10,173 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 00:43:10,179 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 00:43:10,179 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 00:43:10,179 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 00:43:10,214 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:43:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 105 transitions, 225 flow [2023-08-04 00:43:10,342 INFO L124 PetriNetUnfolderBase]: 30/412 cut-off events. [2023-08-04 00:43:10,343 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:43:10,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 437 conditions, 412 events. 30/412 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1844 event pairs, 0 based on Foata normal form. 0/360 useless extension candidates. Maximal degree in co-relation 241. Up to 16 conditions per place. [2023-08-04 00:43:10,357 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 105 transitions, 225 flow [2023-08-04 00:43:10,363 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 169 flow [2023-08-04 00:43:10,366 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:43:10,378 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 169 flow [2023-08-04 00:43:10,381 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 169 flow [2023-08-04 00:43:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 169 flow [2023-08-04 00:43:10,418 INFO L124 PetriNetUnfolderBase]: 6/188 cut-off events. [2023-08-04 00:43:10,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:43:10,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 188 events. 6/188 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 571 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 129. Up to 8 conditions per place. [2023-08-04 00:43:10,426 INFO L119 LiptonReduction]: Number of co-enabled transitions 1042 [2023-08-04 00:43:11,755 INFO L134 LiptonReduction]: Checked pairs total: 1790 [2023-08-04 00:43:11,755 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 00:43:11,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:43:11,776 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;@4ce6fd0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:43:11,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 00:43:11,781 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:43:11,782 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-04 00:43:11,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:43:11,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:11,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 00:43:11,784 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 00:43:11,787 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:11,787 INFO L85 PathProgramCache]: Analyzing trace with hash 1900962881, now seen corresponding path program 1 times [2023-08-04 00:43:11,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:11,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025554673] [2023-08-04 00:43:11,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:11,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:11,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:11,987 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 00:43:11,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:11,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025554673] [2023-08-04 00:43:11,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025554673] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:11,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:11,988 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:43:11,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876558764] [2023-08-04 00:43:11,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:11,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:11,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:12,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:12,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:43:12,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 165 [2023-08-04 00:43:12,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 00:43:12,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:12,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 165 [2023-08-04 00:43:12,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:12,082 INFO L124 PetriNetUnfolderBase]: 160/313 cut-off events. [2023-08-04 00:43:12,083 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 00:43:12,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 650 conditions, 313 events. 160/313 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1330 event pairs, 78 based on Foata normal form. 0/292 useless extension candidates. Maximal degree in co-relation 631. Up to 284 conditions per place. [2023-08-04 00:43:12,086 INFO L140 encePairwiseOnDemand]: 162/165 looper letters, 18 selfloop transitions, 2 changer transitions 0/25 dead transitions. [2023-08-04 00:43:12,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 25 transitions, 105 flow [2023-08-04 00:43:12,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:12,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:12,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-04 00:43:12,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6 [2023-08-04 00:43:12,096 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-04 00:43:12,096 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-04 00:43:12,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:12,099 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-04 00:43:12,102 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.0) internal successors, (297), 3 states have internal predecessors, (297), 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 00:43:12,105 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 00:43:12,106 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 165.0) internal successors, (660), 4 states have internal predecessors, (660), 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 00:43:12,107 INFO L175 Difference]: Start difference. First operand has 29 places, 22 transitions, 59 flow. Second operand 3 states and 297 transitions. [2023-08-04 00:43:12,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 25 transitions, 105 flow [2023-08-04 00:43:12,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:43:12,110 INFO L231 Difference]: Finished difference. Result has 32 places, 22 transitions, 67 flow [2023-08-04 00:43:12,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=165, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=32, PETRI_TRANSITIONS=22} [2023-08-04 00:43:12,113 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 3 predicate places. [2023-08-04 00:43:12,113 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 22 transitions, 67 flow [2023-08-04 00:43:12,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 00:43:12,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:12,114 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 00:43:12,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 00:43:12,114 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:12,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:12,115 INFO L85 PathProgramCache]: Analyzing trace with hash 1897348184, now seen corresponding path program 1 times [2023-08-04 00:43:12,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:12,115 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314362269] [2023-08-04 00:43:12,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:12,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:12,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:43:12,136 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 00:43:12,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:43:12,156 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 00:43:12,157 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 00:43:12,158 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 00:43:12,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 00:43:12,159 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 00:43:12,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 00:43:12,159 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 00:43:12,161 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 00:43:12,161 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 00:43:12,161 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 00:43:12,176 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:43:12,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 125 transitions, 286 flow [2023-08-04 00:43:12,311 INFO L124 PetriNetUnfolderBase]: 93/1298 cut-off events. [2023-08-04 00:43:12,311 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:43:12,315 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 1298 events. 93/1298 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8869 event pairs, 0 based on Foata normal form. 0/1139 useless extension candidates. Maximal degree in co-relation 939. Up to 54 conditions per place. [2023-08-04 00:43:12,315 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 125 transitions, 286 flow [2023-08-04 00:43:12,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 108 places, 97 transitions, 230 flow [2023-08-04 00:43:12,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:43:12,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 108 places, 97 transitions, 230 flow [2023-08-04 00:43:12,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 108 places, 97 transitions, 230 flow [2023-08-04 00:43:12,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 108 places, 97 transitions, 230 flow [2023-08-04 00:43:12,349 INFO L124 PetriNetUnfolderBase]: 12/542 cut-off events. [2023-08-04 00:43:12,349 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:43:12,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 542 events. 12/542 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 2729 event pairs, 0 based on Foata normal form. 0/518 useless extension candidates. Maximal degree in co-relation 435. Up to 27 conditions per place. [2023-08-04 00:43:12,354 INFO L119 LiptonReduction]: Number of co-enabled transitions 2764 [2023-08-04 00:43:13,689 INFO L134 LiptonReduction]: Checked pairs total: 5314 [2023-08-04 00:43:13,691 INFO L136 LiptonReduction]: Total number of compositions: 66 [2023-08-04 00:43:13,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:43:13,698 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;@4ce6fd0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:43:13,698 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 00:43:13,703 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:43:13,705 INFO L124 PetriNetUnfolderBase]: 0/54 cut-off events. [2023-08-04 00:43:13,705 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 00:43:13,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:13,708 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:13,708 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:13,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:13,709 INFO L85 PathProgramCache]: Analyzing trace with hash 795749461, now seen corresponding path program 1 times [2023-08-04 00:43:13,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:13,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287473782] [2023-08-04 00:43:13,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:13,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:13,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:13,776 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:43:13,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:13,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287473782] [2023-08-04 00:43:13,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287473782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:13,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:13,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:43:13,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160216291] [2023-08-04 00:43:13,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:13,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:13,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:13,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:13,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:43:13,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:43:13,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 00:43:13,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:13,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:43:13,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:15,066 INFO L124 PetriNetUnfolderBase]: 12844/18542 cut-off events. [2023-08-04 00:43:15,067 INFO L125 PetriNetUnfolderBase]: For 1812/1812 co-relation queries the response was YES. [2023-08-04 00:43:15,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38229 conditions, 18542 events. 12844/18542 cut-off events. For 1812/1812 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 117021 event pairs, 9918 based on Foata normal form. 0/18257 useless extension candidates. Maximal degree in co-relation 11473. Up to 17234 conditions per place. [2023-08-04 00:43:15,233 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 28 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-04 00:43:15,233 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 176 flow [2023-08-04 00:43:15,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:15,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-04 00:43:15,238 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.62478184991274 [2023-08-04 00:43:15,238 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-04 00:43:15,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-04 00:43:15,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:15,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-04 00:43:15,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 00:43:15,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 00:43:15,244 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 00:43:15,244 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 108 flow. Second operand 3 states and 358 transitions. [2023-08-04 00:43:15,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 176 flow [2023-08-04 00:43:15,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 170 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-04 00:43:15,250 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 114 flow [2023-08-04 00:43:15,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 00:43:15,251 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-04 00:43:15,251 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 114 flow [2023-08-04 00:43:15,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 00:43:15,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:15,252 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 00:43:15,252 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 00:43:15,252 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:15,253 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:15,253 INFO L85 PathProgramCache]: Analyzing trace with hash -107251858, now seen corresponding path program 1 times [2023-08-04 00:43:15,253 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:15,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688395193] [2023-08-04 00:43:15,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:15,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:15,332 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:43:15,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:15,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688395193] [2023-08-04 00:43:15,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688395193] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:15,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [998318358] [2023-08-04 00:43:15,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:15,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:15,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:15,341 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 00:43:15,369 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 00:43:15,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:15,405 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:43:15,406 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:15,456 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:43:15,456 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:43:15,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [998318358] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:15,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:43:15,456 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:43:15,456 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370608765] [2023-08-04 00:43:15,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:15,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:15,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:15,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:15,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:43:15,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-08-04 00:43:15,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 114 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 00:43:15,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:15,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-08-04 00:43:15,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:16,544 INFO L124 PetriNetUnfolderBase]: 12832/18497 cut-off events. [2023-08-04 00:43:16,544 INFO L125 PetriNetUnfolderBase]: For 1479/1479 co-relation queries the response was YES. [2023-08-04 00:43:16,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37899 conditions, 18497 events. 12832/18497 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 701. Compared 115942 event pairs, 7728 based on Foata normal form. 9/18254 useless extension candidates. Maximal degree in co-relation 13595. Up to 17187 conditions per place. [2023-08-04 00:43:16,627 INFO L140 encePairwiseOnDemand]: 187/191 looper letters, 31 selfloop transitions, 4 changer transitions 0/44 dead transitions. [2023-08-04 00:43:16,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 44 transitions, 198 flow [2023-08-04 00:43:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:43:16,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:43:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 576 transitions. [2023-08-04 00:43:16,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6031413612565445 [2023-08-04 00:43:16,629 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 576 transitions. [2023-08-04 00:43:16,629 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 576 transitions. [2023-08-04 00:43:16,629 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:16,629 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 576 transitions. [2023-08-04 00:43:16,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 115.2) internal successors, (576), 5 states have internal predecessors, (576), 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 00:43:16,633 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 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 00:43:16,634 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 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 00:43:16,634 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 114 flow. Second operand 5 states and 576 transitions. [2023-08-04 00:43:16,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 44 transitions, 198 flow [2023-08-04 00:43:16,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 44 transitions, 195 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 00:43:16,636 INFO L231 Difference]: Finished difference. Result has 55 places, 37 transitions, 128 flow [2023-08-04 00:43:16,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=107, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=128, PETRI_PLACES=55, PETRI_TRANSITIONS=37} [2023-08-04 00:43:16,638 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 6 predicate places. [2023-08-04 00:43:16,638 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 37 transitions, 128 flow [2023-08-04 00:43:16,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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 00:43:16,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:16,638 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:16,644 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 00:43:16,843 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:16,844 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:16,845 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:16,845 INFO L85 PathProgramCache]: Analyzing trace with hash -904727173, now seen corresponding path program 1 times [2023-08-04 00:43:16,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:16,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352628975] [2023-08-04 00:43:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:16,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:16,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:16,906 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:43:16,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352628975] [2023-08-04 00:43:16,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352628975] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:16,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [649409774] [2023-08-04 00:43:16,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:16,906 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:16,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:16,908 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 00:43:16,910 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 00:43:16,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:16,971 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:43:16,972 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:16,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:43:16,976 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:43:16,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [649409774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:16,977 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:43:16,977 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:43:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735623161] [2023-08-04 00:43:16,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:16,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:16,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:43:16,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 37 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 00:43:16,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:16,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:43:16,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:18,092 INFO L124 PetriNetUnfolderBase]: 12242/18368 cut-off events. [2023-08-04 00:43:18,092 INFO L125 PetriNetUnfolderBase]: For 1366/1366 co-relation queries the response was YES. [2023-08-04 00:43:18,111 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36967 conditions, 18368 events. 12242/18368 cut-off events. For 1366/1366 co-relation queries the response was YES. Maximal size of possible extension queue 737. Compared 122052 event pairs, 9508 based on Foata normal form. 0/18068 useless extension candidates. Maximal degree in co-relation 11036. Up to 16198 conditions per place. [2023-08-04 00:43:18,156 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 33 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-04 00:43:18,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 45 transitions, 216 flow [2023-08-04 00:43:18,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:18,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:18,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-04 00:43:18,157 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.631762652705061 [2023-08-04 00:43:18,157 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-04 00:43:18,157 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-04 00:43:18,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:18,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-04 00:43:18,158 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 00:43:18,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 00:43:18,159 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 191.0) internal successors, (764), 4 states have internal predecessors, (764), 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 00:43:18,159 INFO L175 Difference]: Start difference. First operand has 55 places, 37 transitions, 128 flow. Second operand 3 states and 362 transitions. [2023-08-04 00:43:18,159 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 45 transitions, 216 flow [2023-08-04 00:43:18,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 45 transitions, 209 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 00:43:18,161 INFO L231 Difference]: Finished difference. Result has 56 places, 38 transitions, 136 flow [2023-08-04 00:43:18,161 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=56, PETRI_TRANSITIONS=38} [2023-08-04 00:43:18,162 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-08-04 00:43:18,162 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 38 transitions, 136 flow [2023-08-04 00:43:18,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.0) internal successors, (336), 3 states have internal predecessors, (336), 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 00:43:18,162 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:18,162 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:18,181 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 00:43:18,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:18,367 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:18,367 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:18,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1498232604, now seen corresponding path program 1 times [2023-08-04 00:43:18,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:18,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376144292] [2023-08-04 00:43:18,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:18,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:18,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:18,393 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:43:18,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376144292] [2023-08-04 00:43:18,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376144292] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:18,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [189417270] [2023-08-04 00:43:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:18,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:18,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:18,395 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 00:43:18,397 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 00:43:18,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:18,452 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:43:18,452 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:18,465 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:43:18,466 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:18,478 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:43:18,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [189417270] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:18,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:18,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 00:43:18,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178189405] [2023-08-04 00:43:18,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:18,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:18,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:18,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:18,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:18,492 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-08-04 00:43:18,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 38 transitions, 136 flow. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 00:43:18,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:18,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-08-04 00:43:18,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:19,267 INFO L124 PetriNetUnfolderBase]: 9694/14348 cut-off events. [2023-08-04 00:43:19,267 INFO L125 PetriNetUnfolderBase]: For 1233/1233 co-relation queries the response was YES. [2023-08-04 00:43:19,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29073 conditions, 14348 events. 9694/14348 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 90494 event pairs, 5616 based on Foata normal form. 3/14207 useless extension candidates. Maximal degree in co-relation 10348. Up to 12736 conditions per place. [2023-08-04 00:43:19,343 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 32 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2023-08-04 00:43:19,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 44 transitions, 213 flow [2023-08-04 00:43:19,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:43:19,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:43:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 467 transitions. [2023-08-04 00:43:19,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6112565445026178 [2023-08-04 00:43:19,344 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 467 transitions. [2023-08-04 00:43:19,344 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 467 transitions. [2023-08-04 00:43:19,345 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:19,345 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 467 transitions. [2023-08-04 00:43:19,346 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.75) internal successors, (467), 4 states have internal predecessors, (467), 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 00:43:19,347 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 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 00:43:19,347 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 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 00:43:19,347 INFO L175 Difference]: Start difference. First operand has 56 places, 38 transitions, 136 flow. Second operand 4 states and 467 transitions. [2023-08-04 00:43:19,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 44 transitions, 213 flow [2023-08-04 00:43:19,349 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 44 transitions, 211 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:19,350 INFO L231 Difference]: Finished difference. Result has 58 places, 37 transitions, 131 flow [2023-08-04 00:43:19,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=131, PETRI_PLACES=58, PETRI_TRANSITIONS=37} [2023-08-04 00:43:19,352 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-08-04 00:43:19,353 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 37 transitions, 131 flow [2023-08-04 00:43:19,353 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 00:43:19,353 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:19,353 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:19,417 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 00:43:19,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:19,558 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:19,559 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:19,559 INFO L85 PathProgramCache]: Analyzing trace with hash 921134889, now seen corresponding path program 1 times [2023-08-04 00:43:19,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:19,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255894310] [2023-08-04 00:43:19,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:19,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:19,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:19,640 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:43:19,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255894310] [2023-08-04 00:43:19,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255894310] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:19,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2004947044] [2023-08-04 00:43:19,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:19,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:19,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:19,655 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 00:43:19,698 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 00:43:19,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:19,740 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:43:19,741 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:19,763 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:43:19,763 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:43:19,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2004947044] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:19,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:43:19,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 00:43:19,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692964573] [2023-08-04 00:43:19,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:19,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:19,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:19,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:19,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:43:19,774 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-08-04 00:43:19,775 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 37 transitions, 131 flow. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 00:43:19,775 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:19,778 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-08-04 00:43:19,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:20,627 INFO L124 PetriNetUnfolderBase]: 9478/14137 cut-off events. [2023-08-04 00:43:20,627 INFO L125 PetriNetUnfolderBase]: For 1006/1006 co-relation queries the response was YES. [2023-08-04 00:43:20,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28524 conditions, 14137 events. 9478/14137 cut-off events. For 1006/1006 co-relation queries the response was YES. Maximal size of possible extension queue 645. Compared 89983 event pairs, 2182 based on Foata normal form. 81/14101 useless extension candidates. Maximal degree in co-relation 10145. Up to 11907 conditions per place. [2023-08-04 00:43:20,723 INFO L140 encePairwiseOnDemand]: 187/191 looper letters, 44 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-04 00:43:20,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 265 flow [2023-08-04 00:43:20,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:43:20,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:43:20,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 588 transitions. [2023-08-04 00:43:20,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6157068062827226 [2023-08-04 00:43:20,725 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 588 transitions. [2023-08-04 00:43:20,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 588 transitions. [2023-08-04 00:43:20,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:20,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 588 transitions. [2023-08-04 00:43:20,727 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.6) internal successors, (588), 5 states have internal predecessors, (588), 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 00:43:20,728 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 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 00:43:20,729 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 191.0) internal successors, (1146), 6 states have internal predecessors, (1146), 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 00:43:20,729 INFO L175 Difference]: Start difference. First operand has 58 places, 37 transitions, 131 flow. Second operand 5 states and 588 transitions. [2023-08-04 00:43:20,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 265 flow [2023-08-04 00:43:20,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 00:43:20,731 INFO L231 Difference]: Finished difference. Result has 59 places, 37 transitions, 141 flow [2023-08-04 00:43:20,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=59, PETRI_TRANSITIONS=37} [2023-08-04 00:43:20,732 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 10 predicate places. [2023-08-04 00:43:20,732 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 37 transitions, 141 flow [2023-08-04 00:43:20,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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 00:43:20,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:20,733 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:20,749 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 00:43:20,937 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 00:43:20,938 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:20,938 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 596369038, now seen corresponding path program 1 times [2023-08-04 00:43:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258732883] [2023-08-04 00:43:20,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:20,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:20,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:43:20,984 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:20,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258732883] [2023-08-04 00:43:20,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258732883] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:20,984 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697265620] [2023-08-04 00:43:20,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:20,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:20,985 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:20,986 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 00:43:21,019 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 00:43:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:21,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:43:21,070 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:21,090 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:43:21,090 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:43:21,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697265620] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:21,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:21,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:43:21,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294668772] [2023-08-04 00:43:21,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:21,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:21,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:21,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:21,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:21,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 191 [2023-08-04 00:43:21,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 37 transitions, 141 flow. Second operand has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 00:43:21,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:21,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 191 [2023-08-04 00:43:21,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:21,814 INFO L124 PetriNetUnfolderBase]: 7588/11167 cut-off events. [2023-08-04 00:43:21,814 INFO L125 PetriNetUnfolderBase]: For 1324/1324 co-relation queries the response was YES. [2023-08-04 00:43:21,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22887 conditions, 11167 events. 7588/11167 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 591. Compared 67016 event pairs, 4450 based on Foata normal form. 27/11104 useless extension candidates. Maximal degree in co-relation 8117. Up to 9394 conditions per place. [2023-08-04 00:43:21,865 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 40 selfloop transitions, 3 changer transitions 0/51 dead transitions. [2023-08-04 00:43:21,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 251 flow [2023-08-04 00:43:21,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:43:21,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:43:21,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2023-08-04 00:43:21,867 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6217277486910995 [2023-08-04 00:43:21,867 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2023-08-04 00:43:21,867 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2023-08-04 00:43:21,867 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:21,868 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2023-08-04 00:43:21,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.75) internal successors, (475), 4 states have internal predecessors, (475), 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 00:43:21,869 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 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 00:43:21,870 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 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 00:43:21,870 INFO L175 Difference]: Start difference. First operand has 59 places, 37 transitions, 141 flow. Second operand 4 states and 475 transitions. [2023-08-04 00:43:21,870 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 251 flow [2023-08-04 00:43:21,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 246 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 00:43:21,871 INFO L231 Difference]: Finished difference. Result has 60 places, 36 transitions, 134 flow [2023-08-04 00:43:21,872 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=60, PETRI_TRANSITIONS=36} [2023-08-04 00:43:21,872 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-08-04 00:43:21,872 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 36 transitions, 134 flow [2023-08-04 00:43:21,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.4) internal successors, (557), 5 states have internal predecessors, (557), 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 00:43:21,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:21,872 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:21,877 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 00:43:22,077 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 00:43:22,077 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:43:22,077 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:22,078 INFO L85 PathProgramCache]: Analyzing trace with hash 349345757, now seen corresponding path program 1 times [2023-08-04 00:43:22,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:22,078 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350877860] [2023-08-04 00:43:22,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:22,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:22,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 00:43:22,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350877860] [2023-08-04 00:43:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350877860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:22,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:22,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 00:43:22,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409779708] [2023-08-04 00:43:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:22,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 00:43:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 00:43:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 00:43:22,127 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:43:22,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 36 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:22,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:22,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:43:22,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:22,539 INFO L124 PetriNetUnfolderBase]: 4672/6955 cut-off events. [2023-08-04 00:43:22,539 INFO L125 PetriNetUnfolderBase]: For 1198/1198 co-relation queries the response was YES. [2023-08-04 00:43:22,551 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14814 conditions, 6955 events. 4672/6955 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 353. Compared 38888 event pairs, 568 based on Foata normal form. 729/7594 useless extension candidates. Maximal degree in co-relation 7268. Up to 4212 conditions per place. [2023-08-04 00:43:22,555 INFO L140 encePairwiseOnDemand]: 189/191 looper letters, 0 selfloop transitions, 0 changer transitions 53/53 dead transitions. [2023-08-04 00:43:22,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 258 flow [2023-08-04 00:43:22,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:43:22,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:43:22,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 481 transitions. [2023-08-04 00:43:22,556 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6295811518324608 [2023-08-04 00:43:22,556 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 481 transitions. [2023-08-04 00:43:22,556 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 481 transitions. [2023-08-04 00:43:22,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:22,557 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 481 transitions. [2023-08-04 00:43:22,557 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.25) internal successors, (481), 4 states have internal predecessors, (481), 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 00:43:22,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 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 00:43:22,559 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 191.0) internal successors, (955), 5 states have internal predecessors, (955), 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 00:43:22,559 INFO L175 Difference]: Start difference. First operand has 60 places, 36 transitions, 134 flow. Second operand 4 states and 481 transitions. [2023-08-04 00:43:22,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 258 flow [2023-08-04 00:43:22,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 53 transitions, 251 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 00:43:22,581 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-08-04 00:43:22,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-08-04 00:43:22,581 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 9 predicate places. [2023-08-04 00:43:22,581 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-08-04 00:43:22,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 112.75) internal successors, (451), 4 states have internal predecessors, (451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:22,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 00:43:22,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 00:43:22,582 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 00:43:22,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 00:43:22,582 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:22,582 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 00:43:22,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 125 transitions, 286 flow [2023-08-04 00:43:22,651 INFO L124 PetriNetUnfolderBase]: 93/1298 cut-off events. [2023-08-04 00:43:22,651 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:43:22,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1396 conditions, 1298 events. 93/1298 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8869 event pairs, 0 based on Foata normal form. 0/1139 useless extension candidates. Maximal degree in co-relation 939. Up to 54 conditions per place. [2023-08-04 00:43:22,653 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 125 transitions, 286 flow [2023-08-04 00:43:22,654 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 119 places, 110 transitions, 244 flow [2023-08-04 00:43:22,654 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:43:22,654 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 119 places, 110 transitions, 244 flow [2023-08-04 00:43:22,654 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 119 places, 110 transitions, 244 flow [2023-08-04 00:43:22,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 110 transitions, 244 flow [2023-08-04 00:43:22,702 INFO L124 PetriNetUnfolderBase]: 66/961 cut-off events. [2023-08-04 00:43:22,702 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 00:43:22,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1033 conditions, 961 events. 66/961 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5977 event pairs, 0 based on Foata normal form. 0/856 useless extension candidates. Maximal degree in co-relation 711. Up to 54 conditions per place. [2023-08-04 00:43:22,712 INFO L119 LiptonReduction]: Number of co-enabled transitions 3716 [2023-08-04 00:43:24,198 INFO L134 LiptonReduction]: Checked pairs total: 6635 [2023-08-04 00:43:24,198 INFO L136 LiptonReduction]: Total number of compositions: 83 [2023-08-04 00:43:24,200 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 00:43:24,201 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;@4ce6fd0a, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:43:24,201 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 00:43:24,203 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:43:24,203 INFO L124 PetriNetUnfolderBase]: 0/9 cut-off events. [2023-08-04 00:43:24,203 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:43:24,203 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:24,203 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 00:43:24,203 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:24,203 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash 617988778, now seen corresponding path program 1 times [2023-08-04 00:43:24,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:24,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877125796] [2023-08-04 00:43:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:24,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:24,231 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 00:43:24,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:24,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877125796] [2023-08-04 00:43:24,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877125796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:24,232 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:24,232 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:43:24,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409944845] [2023-08-04 00:43:24,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:24,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:24,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:24,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:24,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:43:24,241 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-04 00:43:24,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 37 transitions, 98 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 00:43:24,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:24,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-04 00:43:24,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:26,731 INFO L124 PetriNetUnfolderBase]: 33046/46805 cut-off events. [2023-08-04 00:43:26,731 INFO L125 PetriNetUnfolderBase]: For 1473/1473 co-relation queries the response was YES. [2023-08-04 00:43:26,867 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92196 conditions, 46805 events. 33046/46805 cut-off events. For 1473/1473 co-relation queries the response was YES. Maximal size of possible extension queue 1522. Compared 310111 event pairs, 26064 based on Foata normal form. 0/44486 useless extension candidates. Maximal degree in co-relation 26071. Up to 43520 conditions per place. [2023-08-04 00:43:27,018 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 31 selfloop transitions, 2 changer transitions 0/40 dead transitions. [2023-08-04 00:43:27,018 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 40 transitions, 170 flow [2023-08-04 00:43:27,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:27,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:27,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-04 00:43:27,020 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2023-08-04 00:43:27,020 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-04 00:43:27,020 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-04 00:43:27,021 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:27,021 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-04 00:43:27,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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 00:43:27,022 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:27,022 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:27,022 INFO L175 Difference]: Start difference. First operand has 49 places, 37 transitions, 98 flow. Second operand 3 states and 362 transitions. [2023-08-04 00:43:27,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 40 transitions, 170 flow [2023-08-04 00:43:27,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 40 transitions, 170 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:43:27,024 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 108 flow [2023-08-04 00:43:27,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=108, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-08-04 00:43:27,024 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 3 predicate places. [2023-08-04 00:43:27,025 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 108 flow [2023-08-04 00:43:27,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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 00:43:27,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:27,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:27,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 00:43:27,025 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:27,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:27,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1706613628, now seen corresponding path program 1 times [2023-08-04 00:43:27,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:27,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324265592] [2023-08-04 00:43:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:27,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:27,049 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 00:43:27,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:27,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324265592] [2023-08-04 00:43:27,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324265592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:27,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1959692248] [2023-08-04 00:43:27,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:27,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:27,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:27,067 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 00:43:27,098 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 00:43:27,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:27,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:43:27,158 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:27,162 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 00:43:27,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:43:27,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1959692248] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:27,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:43:27,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:43:27,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [651420124] [2023-08-04 00:43:27,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:27,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:27,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:27,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:27,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:27,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-04 00:43:27,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 108 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 00:43:27,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:27,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-04 00:43:27,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:29,519 INFO L124 PetriNetUnfolderBase]: 31406/44609 cut-off events. [2023-08-04 00:43:29,519 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2023-08-04 00:43:29,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87490 conditions, 44609 events. 31406/44609 cut-off events. For 1215/1215 co-relation queries the response was YES. Maximal size of possible extension queue 1527. Compared 294455 event pairs, 24928 based on Foata normal form. 0/42437 useless extension candidates. Maximal degree in co-relation 87453. Up to 40987 conditions per place. [2023-08-04 00:43:29,693 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 36 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-04 00:43:29,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 45 transitions, 200 flow [2023-08-04 00:43:29,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:29,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-04 00:43:29,697 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849358974358975 [2023-08-04 00:43:29,697 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-04 00:43:29,697 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-04 00:43:29,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:29,697 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-04 00:43:29,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 121.66666666666667) internal successors, (365), 3 states have internal predecessors, (365), 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 00:43:29,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:29,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:29,700 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 108 flow. Second operand 3 states and 365 transitions. [2023-08-04 00:43:29,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 45 transitions, 200 flow [2023-08-04 00:43:29,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 45 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:29,701 INFO L231 Difference]: Finished difference. Result has 54 places, 38 transitions, 118 flow [2023-08-04 00:43:29,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=118, PETRI_PLACES=54, PETRI_TRANSITIONS=38} [2023-08-04 00:43:29,702 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 5 predicate places. [2023-08-04 00:43:29,702 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 38 transitions, 118 flow [2023-08-04 00:43:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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 00:43:29,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:29,702 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:29,706 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 00:43:29,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:29,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:29,907 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:29,907 INFO L85 PathProgramCache]: Analyzing trace with hash 1121596374, now seen corresponding path program 1 times [2023-08-04 00:43:29,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:29,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762043636] [2023-08-04 00:43:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:29,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:29,939 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 00:43:29,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762043636] [2023-08-04 00:43:29,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762043636] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:29,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448765058] [2023-08-04 00:43:29,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:29,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:29,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:30,325 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 00:43:30,327 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 00:43:30,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:30,385 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:43:30,386 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:30,392 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 00:43:30,392 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:43:30,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448765058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:30,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:43:30,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:43:30,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102271611] [2023-08-04 00:43:30,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:30,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:30,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:30,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:30,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:30,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-04 00:43:30,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 38 transitions, 118 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 00:43:30,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:30,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-04 00:43:30,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:32,750 INFO L124 PetriNetUnfolderBase]: 30734/43106 cut-off events. [2023-08-04 00:43:32,750 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-04 00:43:32,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85361 conditions, 43106 events. 30734/43106 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 1508. Compared 279188 event pairs, 23582 based on Foata normal form. 0/41219 useless extension candidates. Maximal degree in co-relation 24260. Up to 37757 conditions per place. [2023-08-04 00:43:32,888 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 41 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-04 00:43:32,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 50 transitions, 228 flow [2023-08-04 00:43:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:32,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-08-04 00:43:32,889 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5913461538461539 [2023-08-04 00:43:32,889 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-08-04 00:43:32,889 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-08-04 00:43:32,889 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:32,889 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-08-04 00:43:32,890 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 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 00:43:32,891 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:32,891 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:32,891 INFO L175 Difference]: Start difference. First operand has 54 places, 38 transitions, 118 flow. Second operand 3 states and 369 transitions. [2023-08-04 00:43:32,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 50 transitions, 228 flow [2023-08-04 00:43:32,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:32,892 INFO L231 Difference]: Finished difference. Result has 56 places, 39 transitions, 128 flow [2023-08-04 00:43:32,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=56, PETRI_TRANSITIONS=39} [2023-08-04 00:43:32,893 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 7 predicate places. [2023-08-04 00:43:32,893 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 39 transitions, 128 flow [2023-08-04 00:43:32,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 00:43:32,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:32,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:32,898 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 00:43:33,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:33,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:33,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:33,099 INFO L85 PathProgramCache]: Analyzing trace with hash 44510983, now seen corresponding path program 1 times [2023-08-04 00:43:33,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:33,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843445767] [2023-08-04 00:43:33,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:33,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:33,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:33,126 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 00:43:33,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843445767] [2023-08-04 00:43:33,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1843445767] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:33,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019319849] [2023-08-04 00:43:33,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:33,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:33,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:33,129 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 00:43:33,159 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 00:43:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:33,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:43:33,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:33,230 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 00:43:33,230 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:33,245 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 00:43:33,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019319849] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:33,245 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:33,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 00:43:33,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605982358] [2023-08-04 00:43:33,245 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:33,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:33,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:33,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:33,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:33,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-04 00:43:33,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 39 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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 00:43:33,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:33,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-04 00:43:33,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:35,037 INFO L124 PetriNetUnfolderBase]: 24232/33704 cut-off events. [2023-08-04 00:43:35,037 INFO L125 PetriNetUnfolderBase]: For 3705/3705 co-relation queries the response was YES. [2023-08-04 00:43:35,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69593 conditions, 33704 events. 24232/33704 cut-off events. For 3705/3705 co-relation queries the response was YES. Maximal size of possible extension queue 1245. Compared 207206 event pairs, 14820 based on Foata normal form. 3/33590 useless extension candidates. Maximal degree in co-relation 24747. Up to 31258 conditions per place. [2023-08-04 00:43:35,164 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 36 selfloop transitions, 3 changer transitions 1/47 dead transitions. [2023-08-04 00:43:35,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 224 flow [2023-08-04 00:43:35,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:43:35,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:43:35,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-08-04 00:43:35,165 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661057692307693 [2023-08-04 00:43:35,166 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-08-04 00:43:35,166 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-08-04 00:43:35,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:35,166 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-08-04 00:43:35,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.75) internal successors, (471), 4 states have internal predecessors, (471), 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 00:43:35,169 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 00:43:35,169 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 00:43:35,169 INFO L175 Difference]: Start difference. First operand has 56 places, 39 transitions, 128 flow. Second operand 4 states and 471 transitions. [2023-08-04 00:43:35,169 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 224 flow [2023-08-04 00:43:35,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 47 transitions, 222 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:35,197 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 140 flow [2023-08-04 00:43:35,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-08-04 00:43:35,199 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 11 predicate places. [2023-08-04 00:43:35,199 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 140 flow [2023-08-04 00:43:35,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.6) internal successors, (558), 5 states have internal predecessors, (558), 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 00:43:35,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:35,199 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:35,212 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-04 00:43:35,400 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,SelfDestructingSolverStorable12 [2023-08-04 00:43:35,400 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:35,400 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:35,400 INFO L85 PathProgramCache]: Analyzing trace with hash -243399646, now seen corresponding path program 1 times [2023-08-04 00:43:35,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:35,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458346353] [2023-08-04 00:43:35,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:35,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:35,452 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 00:43:35,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458346353] [2023-08-04 00:43:35,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458346353] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:35,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28635801] [2023-08-04 00:43:35,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:35,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:35,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:35,454 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 00:43:35,456 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 00:43:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:35,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:43:35,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:35,533 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 00:43:35,533 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:35,544 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 00:43:35,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28635801] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:35,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:35,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:43:35,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841621094] [2023-08-04 00:43:35,545 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:35,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:35,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:35,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:35,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:35,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-04 00:43:35,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 00:43:35,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:35,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-04 00:43:35,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:36,982 INFO L124 PetriNetUnfolderBase]: 19198/26422 cut-off events. [2023-08-04 00:43:36,982 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-08-04 00:43:37,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54308 conditions, 26422 events. 19198/26422 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 153975 event pairs, 11902 based on Foata normal form. 27/26359 useless extension candidates. Maximal degree in co-relation 19274. Up to 23785 conditions per place. [2023-08-04 00:43:37,078 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 44 selfloop transitions, 3 changer transitions 1/55 dead transitions. [2023-08-04 00:43:37,078 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 268 flow [2023-08-04 00:43:37,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:43:37,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:43:37,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-04 00:43:37,079 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5757211538461539 [2023-08-04 00:43:37,079 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-04 00:43:37,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-04 00:43:37,079 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:37,080 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-04 00:43:37,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.75) internal successors, (479), 4 states have internal predecessors, (479), 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 00:43:37,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 00:43:37,081 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 00:43:37,081 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 140 flow. Second operand 4 states and 479 transitions. [2023-08-04 00:43:37,081 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 268 flow [2023-08-04 00:43:37,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 261 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 00:43:37,084 INFO L231 Difference]: Finished difference. Result has 62 places, 39 transitions, 147 flow [2023-08-04 00:43:37,084 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=62, PETRI_TRANSITIONS=39} [2023-08-04 00:43:37,084 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 13 predicate places. [2023-08-04 00:43:37,084 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 39 transitions, 147 flow [2023-08-04 00:43:37,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.8) internal successors, (559), 5 states have internal predecessors, (559), 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 00:43:37,085 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:37,085 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:43:37,092 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 00:43:37,289 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,SelfDestructingSolverStorable13 [2023-08-04 00:43:37,289 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:37,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:37,290 INFO L85 PathProgramCache]: Analyzing trace with hash 735120659, now seen corresponding path program 1 times [2023-08-04 00:43:37,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:37,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445656345] [2023-08-04 00:43:37,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:37,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:37,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:37,324 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 00:43:37,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:37,324 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445656345] [2023-08-04 00:43:37,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445656345] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:37,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741444175] [2023-08-04 00:43:37,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:37,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:37,325 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:37,326 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 00:43:37,328 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 00:43:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:37,400 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:43:37,401 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:37,412 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 00:43:37,412 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:37,422 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 00:43:37,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741444175] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:37,422 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:37,422 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:43:37,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752454710] [2023-08-04 00:43:37,422 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:37,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:43:37,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:37,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:43:37,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:43:37,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 208 [2023-08-04 00:43:37,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 39 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:37,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:37,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 208 [2023-08-04 00:43:37,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:38,911 INFO L124 PetriNetUnfolderBase]: 17362/23128 cut-off events. [2023-08-04 00:43:38,911 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-04 00:43:38,971 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48673 conditions, 23128 events. 17362/23128 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 1020. Compared 124439 event pairs, 6886 based on Foata normal form. 243/23281 useless extension candidates. Maximal degree in co-relation 17270. Up to 11794 conditions per place. [2023-08-04 00:43:39,036 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 52 selfloop transitions, 3 changer transitions 1/63 dead transitions. [2023-08-04 00:43:39,036 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 307 flow [2023-08-04 00:43:39,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:43:39,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:43:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 487 transitions. [2023-08-04 00:43:39,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5853365384615384 [2023-08-04 00:43:39,038 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 487 transitions. [2023-08-04 00:43:39,038 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 487 transitions. [2023-08-04 00:43:39,038 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:39,038 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 487 transitions. [2023-08-04 00:43:39,039 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.75) internal successors, (487), 4 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:39,040 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 00:43:39,040 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 208.0) internal successors, (1040), 5 states have internal predecessors, (1040), 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 00:43:39,040 INFO L175 Difference]: Start difference. First operand has 62 places, 39 transitions, 147 flow. Second operand 4 states and 487 transitions. [2023-08-04 00:43:39,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 307 flow [2023-08-04 00:43:39,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 63 transitions, 300 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 00:43:39,042 INFO L231 Difference]: Finished difference. Result has 64 places, 39 transitions, 154 flow [2023-08-04 00:43:39,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=154, PETRI_PLACES=64, PETRI_TRANSITIONS=39} [2023-08-04 00:43:39,043 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2023-08-04 00:43:39,043 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 39 transitions, 154 flow [2023-08-04 00:43:39,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:39,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:39,043 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] [2023-08-04 00:43:39,061 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 00:43:39,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 00:43:39,248 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:39,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1978874181, now seen corresponding path program 1 times [2023-08-04 00:43:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105483676] [2023-08-04 00:43:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:39,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:39,389 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 00:43:39,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:39,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105483676] [2023-08-04 00:43:39,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105483676] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:39,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:39,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 00:43:39,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771316714] [2023-08-04 00:43:39,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:39,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:39,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:39,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:43:39,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 208 [2023-08-04 00:43:39,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 39 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:39,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:39,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 208 [2023-08-04 00:43:39,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:40,580 INFO L124 PetriNetUnfolderBase]: 14068/19222 cut-off events. [2023-08-04 00:43:40,581 INFO L125 PetriNetUnfolderBase]: For 8761/8761 co-relation queries the response was YES. [2023-08-04 00:43:40,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43408 conditions, 19222 events. 14068/19222 cut-off events. For 8761/8761 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 106071 event pairs, 7614 based on Foata normal form. 81/19289 useless extension candidates. Maximal degree in co-relation 43332. Up to 16923 conditions per place. [2023-08-04 00:43:40,685 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 56 selfloop transitions, 3 changer transitions 0/66 dead transitions. [2023-08-04 00:43:40,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 396 flow [2023-08-04 00:43:40,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:40,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2023-08-04 00:43:40,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6153846153846154 [2023-08-04 00:43:40,687 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2023-08-04 00:43:40,687 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2023-08-04 00:43:40,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:40,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2023-08-04 00:43:40,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 00:43:40,688 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:40,688 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:40,689 INFO L175 Difference]: Start difference. First operand has 64 places, 39 transitions, 154 flow. Second operand 3 states and 384 transitions. [2023-08-04 00:43:40,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 396 flow [2023-08-04 00:43:40,701 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 66 transitions, 382 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 00:43:40,702 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 166 flow [2023-08-04 00:43:40,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-04 00:43:40,702 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 15 predicate places. [2023-08-04 00:43:40,702 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 166 flow [2023-08-04 00:43:40,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:43:40,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:40,703 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] [2023-08-04 00:43:40,703 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 00:43:40,703 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:40,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:40,703 INFO L85 PathProgramCache]: Analyzing trace with hash -1981755914, now seen corresponding path program 1 times [2023-08-04 00:43:40,703 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:40,704 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397101113] [2023-08-04 00:43:40,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:40,704 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:40,784 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 00:43:40,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:40,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397101113] [2023-08-04 00:43:40,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397101113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:40,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:40,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 00:43:40,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989692124] [2023-08-04 00:43:40,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:40,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:40,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:40,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:40,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:43:40,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 208 [2023-08-04 00:43:40,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 00:43:40,789 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:40,789 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 208 [2023-08-04 00:43:40,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:41,946 INFO L124 PetriNetUnfolderBase]: 13738/19108 cut-off events. [2023-08-04 00:43:41,947 INFO L125 PetriNetUnfolderBase]: For 8785/8785 co-relation queries the response was YES. [2023-08-04 00:43:41,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45208 conditions, 19108 events. 13738/19108 cut-off events. For 8785/8785 co-relation queries the response was YES. Maximal size of possible extension queue 812. Compared 110173 event pairs, 3152 based on Foata normal form. 72/19170 useless extension candidates. Maximal degree in co-relation 28499. Up to 14449 conditions per place. [2023-08-04 00:43:42,050 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 48 selfloop transitions, 3 changer transitions 0/58 dead transitions. [2023-08-04 00:43:42,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 58 transitions, 329 flow [2023-08-04 00:43:42,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:42,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:42,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 374 transitions. [2023-08-04 00:43:42,053 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5993589743589743 [2023-08-04 00:43:42,053 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 374 transitions. [2023-08-04 00:43:42,053 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 374 transitions. [2023-08-04 00:43:42,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:42,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 374 transitions. [2023-08-04 00:43:42,054 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.66666666666667) internal successors, (374), 3 states have internal predecessors, (374), 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 00:43:42,055 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:42,055 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:42,055 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 166 flow. Second operand 3 states and 374 transitions. [2023-08-04 00:43:42,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 58 transitions, 329 flow [2023-08-04 00:43:42,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:42,061 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 182 flow [2023-08-04 00:43:42,061 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=163, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=182, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-08-04 00:43:42,062 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 17 predicate places. [2023-08-04 00:43:42,062 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 182 flow [2023-08-04 00:43:42,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 00:43:42,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:42,062 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 00:43:42,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 00:43:42,062 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:42,063 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:42,063 INFO L85 PathProgramCache]: Analyzing trace with hash 1737351916, now seen corresponding path program 1 times [2023-08-04 00:43:42,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:42,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130777081] [2023-08-04 00:43:42,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:42,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:42,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:42,176 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 00:43:42,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:42,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130777081] [2023-08-04 00:43:42,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130777081] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:42,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:43:42,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:43:42,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910674398] [2023-08-04 00:43:42,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:42,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 00:43:42,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:42,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 00:43:42,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-04 00:43:42,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 208 [2023-08-04 00:43:42,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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 00:43:42,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:42,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 208 [2023-08-04 00:43:42,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:45,578 INFO L124 PetriNetUnfolderBase]: 43071/56000 cut-off events. [2023-08-04 00:43:45,578 INFO L125 PetriNetUnfolderBase]: For 36286/36286 co-relation queries the response was YES. [2023-08-04 00:43:45,702 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138675 conditions, 56000 events. 43071/56000 cut-off events. For 36286/36286 co-relation queries the response was YES. Maximal size of possible extension queue 2208. Compared 325658 event pairs, 3212 based on Foata normal form. 1080/56857 useless extension candidates. Maximal degree in co-relation 138578. Up to 35609 conditions per place. [2023-08-04 00:43:45,866 INFO L140 encePairwiseOnDemand]: 198/208 looper letters, 101 selfloop transitions, 25 changer transitions 0/131 dead transitions. [2023-08-04 00:43:45,866 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 131 transitions, 807 flow [2023-08-04 00:43:45,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:43:45,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:43:45,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 609 transitions. [2023-08-04 00:43:45,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5855769230769231 [2023-08-04 00:43:45,868 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 609 transitions. [2023-08-04 00:43:45,868 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 609 transitions. [2023-08-04 00:43:45,868 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:45,875 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 609 transitions. [2023-08-04 00:43:45,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 121.8) internal successors, (609), 5 states have internal predecessors, (609), 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 00:43:45,877 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 00:43:45,878 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 208.0) internal successors, (1248), 6 states have internal predecessors, (1248), 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 00:43:45,878 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 182 flow. Second operand 5 states and 609 transitions. [2023-08-04 00:43:45,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 131 transitions, 807 flow [2023-08-04 00:43:45,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 131 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:45,922 INFO L231 Difference]: Finished difference. Result has 72 places, 67 transitions, 394 flow [2023-08-04 00:43:45,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=179, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=394, PETRI_PLACES=72, PETRI_TRANSITIONS=67} [2023-08-04 00:43:45,922 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 23 predicate places. [2023-08-04 00:43:45,922 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 67 transitions, 394 flow [2023-08-04 00:43:45,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 105.75) internal successors, (423), 4 states have internal predecessors, (423), 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 00:43:45,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:45,923 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 00:43:45,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 00:43:45,923 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:45,923 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:45,923 INFO L85 PathProgramCache]: Analyzing trace with hash -324905420, now seen corresponding path program 2 times [2023-08-04 00:43:45,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:45,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55652819] [2023-08-04 00:43:45,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:45,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:45,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:46,024 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 00:43:46,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:46,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55652819] [2023-08-04 00:43:46,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55652819] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:46,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [157809194] [2023-08-04 00:43:46,025 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 00:43:46,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:46,025 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:46,049 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:43:46,085 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-04 00:43:46,130 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-04 00:43:46,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 00:43:46,131 INFO L262 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 00:43:46,133 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:46,162 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 00:43:46,162 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:43:46,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [157809194] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:43:46,162 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:43:46,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 00:43:46,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365429970] [2023-08-04 00:43:46,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:43:46,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:43:46,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:46,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:43:46,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:43:46,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 208 [2023-08-04 00:43:46,169 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 67 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 00:43:46,169 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:46,169 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 208 [2023-08-04 00:43:46,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:49,652 INFO L124 PetriNetUnfolderBase]: 38613/50429 cut-off events. [2023-08-04 00:43:49,652 INFO L125 PetriNetUnfolderBase]: For 101260/103762 co-relation queries the response was YES. [2023-08-04 00:43:49,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 169521 conditions, 50429 events. 38613/50429 cut-off events. For 101260/103762 co-relation queries the response was YES. Maximal size of possible extension queue 2162. Compared 284242 event pairs, 8502 based on Foata normal form. 199/46866 useless extension candidates. Maximal degree in co-relation 96987. Up to 45772 conditions per place. [2023-08-04 00:43:49,984 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 101 selfloop transitions, 7 changer transitions 0/119 dead transitions. [2023-08-04 00:43:49,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 119 transitions, 927 flow [2023-08-04 00:43:49,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:43:49,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:43:49,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 373 transitions. [2023-08-04 00:43:49,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977564102564102 [2023-08-04 00:43:49,996 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 373 transitions. [2023-08-04 00:43:49,996 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 373 transitions. [2023-08-04 00:43:49,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:49,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 373 transitions. [2023-08-04 00:43:49,997 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.33333333333333) internal successors, (373), 3 states have internal predecessors, (373), 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 00:43:49,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:49,998 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 208.0) internal successors, (832), 4 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 00:43:49,999 INFO L175 Difference]: Start difference. First operand has 72 places, 67 transitions, 394 flow. Second operand 3 states and 373 transitions. [2023-08-04 00:43:49,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 119 transitions, 927 flow [2023-08-04 00:43:50,050 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 119 transitions, 927 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:43:50,052 INFO L231 Difference]: Finished difference. Result has 75 places, 73 transitions, 441 flow [2023-08-04 00:43:50,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=394, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=441, PETRI_PLACES=75, PETRI_TRANSITIONS=73} [2023-08-04 00:43:50,052 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 26 predicate places. [2023-08-04 00:43:50,052 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 73 transitions, 441 flow [2023-08-04 00:43:50,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.33333333333333) internal successors, (337), 3 states have internal predecessors, (337), 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 00:43:50,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:50,053 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 00:43:50,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-04 00:43:50,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:50,254 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:50,254 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:50,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1938205215, now seen corresponding path program 1 times [2023-08-04 00:43:50,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:50,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746814154] [2023-08-04 00:43:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:50,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:50,421 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 00:43:50,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746814154] [2023-08-04 00:43:50,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746814154] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:50,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535195997] [2023-08-04 00:43:50,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:50,421 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:50,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:50,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:43:50,450 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-04 00:43:50,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:50,558 INFO L262 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 00:43:50,560 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:50,776 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 00:43:50,776 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:50,862 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 00:43:50,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535195997] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:50,862 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:50,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-04 00:43:50,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795496107] [2023-08-04 00:43:50,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:50,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 00:43:50,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:50,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 00:43:50,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-04 00:43:50,892 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 208 [2023-08-04 00:43:50,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 73 transitions, 441 flow. Second operand has 8 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 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 00:43:50,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:50,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 208 [2023-08-04 00:43:50,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:43:54,547 INFO L124 PetriNetUnfolderBase]: 39563/52946 cut-off events. [2023-08-04 00:43:54,547 INFO L125 PetriNetUnfolderBase]: For 107052/107234 co-relation queries the response was YES. [2023-08-04 00:43:54,918 INFO L83 FinitePrefix]: Finished finitePrefix Result has 198028 conditions, 52946 events. 39563/52946 cut-off events. For 107052/107234 co-relation queries the response was YES. Maximal size of possible extension queue 2270. Compared 310281 event pairs, 649 based on Foata normal form. 2518/55337 useless extension candidates. Maximal degree in co-relation 116450. Up to 21115 conditions per place. [2023-08-04 00:43:55,058 INFO L140 encePairwiseOnDemand]: 195/208 looper letters, 246 selfloop transitions, 95 changer transitions 30/376 dead transitions. [2023-08-04 00:43:55,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 376 transitions, 3026 flow [2023-08-04 00:43:55,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-04 00:43:55,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-04 00:43:55,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1480 transitions. [2023-08-04 00:43:55,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473372781065089 [2023-08-04 00:43:55,074 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1480 transitions. [2023-08-04 00:43:55,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1480 transitions. [2023-08-04 00:43:55,075 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:43:55,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1480 transitions. [2023-08-04 00:43:55,077 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.84615384615384) internal successors, (1480), 13 states have internal predecessors, (1480), 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 00:43:55,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 208.0) internal successors, (2912), 14 states have internal predecessors, (2912), 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 00:43:55,079 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 208.0) internal successors, (2912), 14 states have internal predecessors, (2912), 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 00:43:55,079 INFO L175 Difference]: Start difference. First operand has 75 places, 73 transitions, 441 flow. Second operand 13 states and 1480 transitions. [2023-08-04 00:43:55,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 376 transitions, 3026 flow [2023-08-04 00:43:55,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 376 transitions, 3009 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:43:55,112 INFO L231 Difference]: Finished difference. Result has 95 places, 157 transitions, 1278 flow [2023-08-04 00:43:55,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=434, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1278, PETRI_PLACES=95, PETRI_TRANSITIONS=157} [2023-08-04 00:43:55,113 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 46 predicate places. [2023-08-04 00:43:55,114 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 157 transitions, 1278 flow [2023-08-04 00:43:55,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 101.875) internal successors, (815), 8 states have internal predecessors, (815), 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 00:43:55,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:43:55,114 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] [2023-08-04 00:43:55,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-04 00:43:55,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:55,318 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:43:55,318 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:43:55,318 INFO L85 PathProgramCache]: Analyzing trace with hash -231084461, now seen corresponding path program 1 times [2023-08-04 00:43:55,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:43:55,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157261590] [2023-08-04 00:43:55,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:55,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:43:55,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:55,437 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 00:43:55,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:43:55,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157261590] [2023-08-04 00:43:55,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157261590] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:43:55,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005576186] [2023-08-04 00:43:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:43:55,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:43:55,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:43:55,439 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:43:55,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-04 00:43:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:43:55,523 INFO L262 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 25 conjunts are in the unsatisfiable core [2023-08-04 00:43:55,528 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:43:55,626 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:43:55,627 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:43:55,766 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:43:55,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2005576186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:43:55,767 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:43:55,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 6, 6] total 14 [2023-08-04 00:43:55,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27032553] [2023-08-04 00:43:55,767 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:43:55,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-04 00:43:55,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:43:55,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-04 00:43:55,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=163, Unknown=0, NotChecked=0, Total=240 [2023-08-04 00:43:55,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 208 [2023-08-04 00:43:55,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 157 transitions, 1278 flow. Second operand has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 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 00:43:55,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:43:55,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 208 [2023-08-04 00:43:55,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:44:15,069 INFO L124 PetriNetUnfolderBase]: 174641/227624 cut-off events. [2023-08-04 00:44:15,069 INFO L125 PetriNetUnfolderBase]: For 929467/929467 co-relation queries the response was YES. [2023-08-04 00:44:16,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1045663 conditions, 227624 events. 174641/227624 cut-off events. For 929467/929467 co-relation queries the response was YES. Maximal size of possible extension queue 9740. Compared 1485597 event pairs, 3214 based on Foata normal form. 777/228357 useless extension candidates. Maximal degree in co-relation 1017716. Up to 93873 conditions per place. [2023-08-04 00:44:16,764 INFO L140 encePairwiseOnDemand]: 195/208 looper letters, 554 selfloop transitions, 475 changer transitions 219/1251 dead transitions. [2023-08-04 00:44:16,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 1251 transitions, 12032 flow [2023-08-04 00:44:16,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2023-08-04 00:44:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2023-08-04 00:44:16,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 3390 transitions. [2023-08-04 00:44:16,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5432692307692307 [2023-08-04 00:44:16,769 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 3390 transitions. [2023-08-04 00:44:16,769 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 3390 transitions. [2023-08-04 00:44:16,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:44:16,770 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 3390 transitions. [2023-08-04 00:44:16,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 113.0) internal successors, (3390), 30 states have internal predecessors, (3390), 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 00:44:16,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 208.0) internal successors, (6448), 31 states have internal predecessors, (6448), 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 00:44:16,782 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 208.0) internal successors, (6448), 31 states have internal predecessors, (6448), 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 00:44:16,782 INFO L175 Difference]: Start difference. First operand has 95 places, 157 transitions, 1278 flow. Second operand 30 states and 3390 transitions. [2023-08-04 00:44:16,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 1251 transitions, 12032 flow [2023-08-04 00:45:27,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 1251 transitions, 11437 flow, removed 268 selfloop flow, removed 1 redundant places. [2023-08-04 00:45:27,630 INFO L231 Difference]: Finished difference. Result has 139 places, 641 transitions, 5835 flow [2023-08-04 00:45:27,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=5835, PETRI_PLACES=139, PETRI_TRANSITIONS=641} [2023-08-04 00:45:27,631 INFO L281 CegarLoopForPetriNet]: 49 programPoint places, 90 predicate places. [2023-08-04 00:45:27,631 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 641 transitions, 5835 flow [2023-08-04 00:45:27,631 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 98.875) internal successors, (1582), 16 states have internal predecessors, (1582), 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 00:45:27,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:45:27,632 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] [2023-08-04 00:45:27,638 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-04 00:45:27,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2023-08-04 00:45:27,836 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:45:27,836 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:45:27,836 INFO L85 PathProgramCache]: Analyzing trace with hash -2095225666, now seen corresponding path program 1 times [2023-08-04 00:45:27,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:45:27,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936831509] [2023-08-04 00:45:27,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:45:27,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:45:27,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:45:27,859 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 00:45:27,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:45:27,879 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 00:45:27,879 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 00:45:27,879 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 00:45:27,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-08-04 00:45:27,879 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:45:27,880 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE (2/2) [2023-08-04 00:45:27,897 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 00:45:27,898 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 00:45:27,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 12:45:27 BasicIcfg [2023-08-04 00:45:27,972 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 00:45:27,973 INFO L158 Benchmark]: Toolchain (without parser) took 138603.14ms. Allocated memory was 633.3MB in the beginning and 15.2GB in the end (delta: 14.6GB). Free memory was 594.3MB in the beginning and 9.6GB in the end (delta: -9.0GB). Peak memory consumption was 5.6GB. Max. memory is 16.0GB. [2023-08-04 00:45:27,973 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 316.7MB. Free memory is still 268.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 00:45:27,973 INFO L158 Benchmark]: CACSL2BoogieTranslator took 366.72ms. Allocated memory is still 633.3MB. Free memory was 593.9MB in the beginning and 572.5MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 00:45:27,973 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.47ms. Allocated memory is still 633.3MB. Free memory was 572.5MB in the beginning and 570.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 00:45:27,973 INFO L158 Benchmark]: Boogie Preprocessor took 26.46ms. Allocated memory is still 633.3MB. Free memory was 570.4MB in the beginning and 568.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 00:45:27,973 INFO L158 Benchmark]: RCFGBuilder took 351.14ms. Allocated memory is still 633.3MB. Free memory was 568.7MB in the beginning and 554.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-04 00:45:27,974 INFO L158 Benchmark]: TraceAbstraction took 137812.68ms. Allocated memory was 633.3MB in the beginning and 15.2GB in the end (delta: 14.6GB). Free memory was 553.3MB in the beginning and 9.6GB in the end (delta: -9.0GB). Peak memory consumption was 5.5GB. Max. memory is 16.0GB. [2023-08-04 00:45:27,974 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 316.7MB. Free memory is still 268.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 366.72ms. Allocated memory is still 633.3MB. Free memory was 593.9MB in the beginning and 572.5MB in the end (delta: 21.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 42.47ms. Allocated memory is still 633.3MB. Free memory was 572.5MB in the beginning and 570.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 26.46ms. Allocated memory is still 633.3MB. Free memory was 570.4MB in the beginning and 568.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 351.14ms. Allocated memory is still 633.3MB. Free memory was 568.7MB in the beginning and 554.0MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 137812.68ms. Allocated memory was 633.3MB in the beginning and 15.2GB in the end (delta: 14.6GB). Free memory was 553.3MB in the beginning and 9.6GB in the end (delta: -9.0GB). Peak memory consumption was 5.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 82 PlacesBefore, 29 PlacesAfterwards, 77 TransitionsBefore, 22 TransitionsAfterwards, 1042 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 60 TotalNumberOfCompositions, 1790 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1151, independent: 1091, independent conditional: 0, independent unconditional: 1091, dependent: 60, dependent conditional: 0, dependent unconditional: 60, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 540, independent: 529, independent conditional: 0, independent unconditional: 529, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1151, independent: 562, independent conditional: 0, independent unconditional: 562, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 540, unknown conditional: 0, unknown unconditional: 540] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 58, Positive conditional cache size: 0, Positive unconditional cache size: 58, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 108 PlacesBefore, 49 PlacesAfterwards, 97 TransitionsBefore, 36 TransitionsAfterwards, 2764 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 66 TotalNumberOfCompositions, 5314 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2864, independent: 2755, independent conditional: 0, independent unconditional: 2755, dependent: 109, dependent conditional: 0, dependent unconditional: 109, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1357, independent: 1335, independent conditional: 0, independent unconditional: 1335, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2864, independent: 1420, independent conditional: 0, independent unconditional: 1420, dependent: 87, dependent conditional: 0, dependent unconditional: 87, unknown: 1357, unknown conditional: 0, unknown unconditional: 1357] , Statistics on independence cache: Total cache size (in pairs): 170, Positive cache size: 157, Positive conditional cache size: 0, Positive unconditional cache size: 157, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 119 PlacesBefore, 49 PlacesAfterwards, 110 TransitionsBefore, 37 TransitionsAfterwards, 3716 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 83 TotalNumberOfCompositions, 6635 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3260, independent: 3142, independent conditional: 0, independent unconditional: 3142, dependent: 118, dependent conditional: 0, dependent unconditional: 118, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1883, independent: 1842, independent conditional: 0, independent unconditional: 1842, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3260, independent: 1300, independent conditional: 0, independent unconditional: 1300, dependent: 77, dependent conditional: 0, dependent unconditional: 77, unknown: 1883, unknown conditional: 0, unknown unconditional: 1883] , Statistics on independence cache: Total cache size (in pairs): 145, Positive cache size: 130, Positive conditional cache size: 0, Positive unconditional cache size: 130, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p0_EBX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L721] 0 int y = 0; [L775] 0 pthread_t t2207[2]; [L776] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, x=0, y=0] [L776] COND TRUE 0 asdf<2 [L776] FCALL, FORK 0 pthread_create(&t2207[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2207[asdf], ((void *)0), P0, ((void *)0))=-5, t2207={5:0}, x=0, y=0] [L776] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, x=0, y=0] [L776] COND TRUE 0 asdf<2 [L776] FCALL, FORK 0 pthread_create(&t2207[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2207[asdf], ((void *)0), P0, ((void *)0))=-4, t2207={5:0}, x=0, y=0] [L776] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, x=0, y=0] [L776] COND FALSE 0 !(asdf<2) [L777] 0 pthread_t t2208[2]; [L778] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, t2208={6:0}, x=0, y=0] [L778] COND TRUE 0 asdf<2 [L778] FCALL, FORK 0 pthread_create(&t2208[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2208[asdf], ((void *)0), P1, ((void *)0))=-3, t2207={5:0}, t2208={6:0}, x=0, y=0] [L778] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, t2208={6:0}, x=0, y=0] [L778] COND TRUE 0 asdf<2 [L740] 3 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L778] FCALL, FORK 0 pthread_create(&t2208[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2208[asdf], ((void *)0), P1, ((void *)0))=-2, t2207={5:0}, t2208={6:0}, x=1, y=0] [L778] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, t2208={6:0}, x=1, y=0] [L740] 4 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L778] COND FALSE 0 !(asdf<2) [L779] 0 pthread_t t2209[2]; [L780] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, t2208={6:0}, t2209={3:0}, x=1, y=0] [L780] COND TRUE 0 asdf<2 [L780] FCALL, FORK 0 pthread_create(&t2209[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2209[asdf], ((void *)0), P2, ((void *)0))=-1, t2207={5:0}, t2208={6:0}, t2209={3:0}, x=1, y=0] [L780] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, t2208={6:0}, t2209={3:0}, x=1, y=0] [L780] COND TRUE 0 asdf<2 [L780] FCALL, FORK 0 pthread_create(&t2209[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2209[asdf], ((void *)0), P2, ((void *)0))=0, t2207={5:0}, t2208={6:0}, t2209={3:0}, x=1, y=0] [L780] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2207={5:0}, t2208={6:0}, t2209={3:0}, x=1, y=0] [L745] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L747] 3 return 0; [L745] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L747] 4 return 0; [L752] 5 __unbuffered_p2_EAX = x VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=0] [L755] 5 y = 1 VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=0, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L725] 1 __unbuffered_p0_EAX = y VAL [\result={0:0}, __unbuffered_cnt=2, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=1] [L760] 5 __unbuffered_cnt = __unbuffered_cnt + 1 [L762] 5 return 0; [L780] COND FALSE 0 !(asdf<2) [L782] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L784] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L784] RET 0 assume_abort_if_not(main$tmp_guard0) [L788] 0 main$tmp_guard1 = !(__unbuffered_p0_EAX == 1 && __unbuffered_p0_EBX == 0 && __unbuffered_p2_EAX == 1) [L790] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=1, __unbuffered_p0_EBX=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=1] - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 121 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 40 IncrementalHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 40 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 141 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 10.4s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 231 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 171 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 594 IncrementalHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 9 mSDtfsCounter, 594 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=5, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 694 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 124/141 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 10 procedures, 141 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 125.3s, OverallIterations: 13, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 119.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1188 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1065 mSDsluCounter, 455 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 412 mSDsCounter, 229 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2179 IncrementalHoareTripleChecker+Invalid, 2408 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 229 mSolverCounterUnsat, 43 mSDtfsCounter, 2179 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 364 GetRequests, 287 SyntacticMatches, 7 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5835occurred in iteration=12, InterpolantAutomatonStates: 78, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 504 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 575 ConstructedInterpolants, 0 QuantifiedInterpolants, 1812 SizeOfPredicates, 7 NumberOfNonLiveVariables, 1324 ConjunctsInSsa, 55 ConjunctsInUnsatCore, 25 InterpolantComputations, 7 PerfectInterpolantSequences, 232/276 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 00:45:28,001 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...