/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_safe015_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 00:34:23,386 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 00:34:23,454 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 00:34:23,459 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 00:34:23,459 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 00:34:23,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 00:34:23,460 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 00:34:23,479 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 00:34:23,480 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 00:34:23,480 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 00:34:23,481 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 00:34:23,481 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 00:34:23,481 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 00:34:23,482 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 00:34:23,482 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 00:34:23,482 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 00:34:23,483 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 00:34:23,483 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 00:34:23,483 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 00:34:23,483 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 00:34:23,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 00:34:23,488 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 00:34:23,488 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 00:34:23,489 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 00:34:23,489 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 00:34:23,489 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 00:34:23,489 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 00:34:23,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 00:34:23,490 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 00:34:23,490 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 00:34:23,490 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:34:23,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 00:34:23,491 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 00:34:23,491 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 00:34:23,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 00:34:23,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 00:34:23,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 00:34:23,492 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 00:34:23,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 00:34:23,493 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 00:34:23,493 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 00:34:23,497 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 00:34:23,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 00:34:23,761 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 00:34:23,763 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 00:34:23,764 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 00:34:23,765 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 00:34:23,766 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 00:34:24,921 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 00:34:25,136 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 00:34:25,137 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe015_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 00:34:25,161 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74c2852f/fa9f4bd7949942df8c399979c34495a4/FLAG9303bf571 [2023-08-04 00:34:25,171 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c74c2852f/fa9f4bd7949942df8c399979c34495a4 [2023-08-04 00:34:25,173 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 00:34:25,175 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 00:34:25,176 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 00:34:25,176 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 00:34:25,178 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 00:34:25,179 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,180 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e575b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25, skipping insertion in model container [2023-08-04 00:34:25,180 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,217 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 00:34:25,342 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_safe015_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 00:34:25,493 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:34:25,505 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 00:34:25,517 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_safe015_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-04 00:34:25,537 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 00:34:25,539 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 00:34:25,570 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:34:25,594 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:34:25,595 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:34:25,600 INFO L206 MainTranslator]: Completed translation [2023-08-04 00:34:25,600 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25 WrapperNode [2023-08-04 00:34:25,600 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 00:34:25,602 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 00:34:25,602 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 00:34:25,602 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 00:34:25,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,617 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,635 INFO L138 Inliner]: procedures = 176, calls = 55, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2023-08-04 00:34:25,635 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 00:34:25,636 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 00:34:25,636 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 00:34:25,636 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 00:34:25,644 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,644 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,647 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,652 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,655 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,657 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,658 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,660 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 00:34:25,661 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 00:34:25,661 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 00:34:25,661 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 00:34:25,661 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (1/1) ... [2023-08-04 00:34:25,666 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:34:25,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:25,698 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 00:34:25,716 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 00:34:25,741 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 00:34:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 00:34:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 00:34:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 00:34:25,742 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 00:34:25,743 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 00:34:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 00:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 00:34:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 00:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 00:34:25,744 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 00:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 00:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 00:34:25,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 00:34:25,745 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 00:34:25,746 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 00:34:25,883 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 00:34:25,884 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 00:34:26,053 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 00:34:26,059 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 00:34:26,059 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 00:34:26,061 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:34:26 BoogieIcfgContainer [2023-08-04 00:34:26,061 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 00:34:26,063 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 00:34:26,063 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 00:34:26,065 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 00:34:26,065 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 12:34:25" (1/3) ... [2023-08-04 00:34:26,066 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:34:26, skipping insertion in model container [2023-08-04 00:34:26,066 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:34:25" (2/3) ... [2023-08-04 00:34:26,067 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4deba96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:34:26, skipping insertion in model container [2023-08-04 00:34:26,067 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:34:26" (3/3) ... [2023-08-04 00:34:26,068 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe015_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-04 00:34:26,074 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 00:34:26,083 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 00:34:26,083 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 00:34:26,084 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 00:34:26,145 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:34:26,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 105 transitions, 225 flow [2023-08-04 00:34:26,279 INFO L124 PetriNetUnfolderBase]: 30/413 cut-off events. [2023-08-04 00:34:26,279 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:34:26,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 413 events. 30/413 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1846 event pairs, 0 based on Foata normal form. 0/361 useless extension candidates. Maximal degree in co-relation 242. Up to 16 conditions per place. [2023-08-04 00:34:26,291 INFO L82 GeneralOperation]: Start removeDead. Operand has 107 places, 105 transitions, 225 flow [2023-08-04 00:34:26,294 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 77 transitions, 169 flow [2023-08-04 00:34:26,297 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:34:26,312 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 77 transitions, 169 flow [2023-08-04 00:34:26,316 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 77 transitions, 169 flow [2023-08-04 00:34:26,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 77 transitions, 169 flow [2023-08-04 00:34:26,346 INFO L124 PetriNetUnfolderBase]: 6/189 cut-off events. [2023-08-04 00:34:26,347 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:34:26,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 214 conditions, 189 events. 6/189 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 584 event pairs, 0 based on Foata normal form. 0/177 useless extension candidates. Maximal degree in co-relation 130. Up to 8 conditions per place. [2023-08-04 00:34:26,350 INFO L119 LiptonReduction]: Number of co-enabled transitions 1116 [2023-08-04 00:34:27,976 INFO L134 LiptonReduction]: Checked pairs total: 2194 [2023-08-04 00:34:27,976 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-04 00:34:27,988 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:34:27,995 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;@a3dab52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:34:27,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 00:34:28,001 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:34:28,002 INFO L124 PetriNetUnfolderBase]: 0/21 cut-off events. [2023-08-04 00:34:28,002 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:34:28,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:28,002 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 00:34:28,003 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 00:34:28,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:28,009 INFO L85 PathProgramCache]: Analyzing trace with hash 1872304963, now seen corresponding path program 1 times [2023-08-04 00:34:28,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:28,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527330197] [2023-08-04 00:34:28,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:28,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:28,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:28,193 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 00:34:28,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:28,193 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527330197] [2023-08-04 00:34:28,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527330197] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:28,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:34:28,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:34:28,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584714057] [2023-08-04 00:34:28,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:28,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:28,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:34:28,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 164 [2023-08-04 00:34:28,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 61 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 00:34:28,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:28,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 164 [2023-08-04 00:34:28,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:28,342 INFO L124 PetriNetUnfolderBase]: 160/352 cut-off events. [2023-08-04 00:34:28,342 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:34:28,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 725 conditions, 352 events. 160/352 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1755 event pairs, 78 based on Foata normal form. 0/322 useless extension candidates. Maximal degree in co-relation 706. Up to 284 conditions per place. [2023-08-04 00:34:28,351 INFO L140 encePairwiseOnDemand]: 161/164 looper letters, 18 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-08-04 00:34:28,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 26 transitions, 107 flow [2023-08-04 00:34:28,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:34:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:34:28,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 297 transitions. [2023-08-04 00:34:28,372 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6036585365853658 [2023-08-04 00:34:28,373 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 297 transitions. [2023-08-04 00:34:28,373 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 297 transitions. [2023-08-04 00:34:28,376 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:28,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 297 transitions. [2023-08-04 00:34:28,384 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 00:34:28,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 00:34:28,389 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 164.0) internal successors, (656), 4 states have internal predecessors, (656), 0 states have call successors, (0), 0 states 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 00:34:28,391 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 61 flow. Second operand 3 states and 297 transitions. [2023-08-04 00:34:28,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 26 transitions, 107 flow [2023-08-04 00:34:28,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 26 transitions, 107 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:34:28,395 INFO L231 Difference]: Finished difference. Result has 33 places, 23 transitions, 69 flow [2023-08-04 00:34:28,398 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=164, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=33, PETRI_TRANSITIONS=23} [2023-08-04 00:34:28,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 3 predicate places. [2023-08-04 00:34:28,402 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 23 transitions, 69 flow [2023-08-04 00:34:28,402 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 00:34:28,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:28,403 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 00:34:28,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 00:34:28,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:34:28,405 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:28,405 INFO L85 PathProgramCache]: Analyzing trace with hash 1868747864, now seen corresponding path program 1 times [2023-08-04 00:34:28,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:28,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160184245] [2023-08-04 00:34:28,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:28,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:34:28,443 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 00:34:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:34:28,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 00:34:28,479 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 00:34:28,480 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 00:34:28,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 00:34:28,481 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 00:34:28,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 00:34:28,481 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 00:34:28,483 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 00:34:28,484 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 00:34:28,484 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 00:34:28,514 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:34:28,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 126 transitions, 288 flow [2023-08-04 00:34:28,664 INFO L124 PetriNetUnfolderBase]: 93/1303 cut-off events. [2023-08-04 00:34:28,664 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:34:28,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 1303 events. 93/1303 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8849 event pairs, 0 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 944. Up to 54 conditions per place. [2023-08-04 00:34:28,670 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 126 transitions, 288 flow [2023-08-04 00:34:28,672 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 98 transitions, 232 flow [2023-08-04 00:34:28,672 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:34:28,672 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 98 transitions, 232 flow [2023-08-04 00:34:28,673 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 98 transitions, 232 flow [2023-08-04 00:34:28,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 98 transitions, 232 flow [2023-08-04 00:34:28,719 INFO L124 PetriNetUnfolderBase]: 12/547 cut-off events. [2023-08-04 00:34:28,720 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:34:28,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 645 conditions, 547 events. 12/547 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2785 event pairs, 0 based on Foata normal form. 0/523 useless extension candidates. Maximal degree in co-relation 440. Up to 27 conditions per place. [2023-08-04 00:34:28,729 INFO L119 LiptonReduction]: Number of co-enabled transitions 2988 [2023-08-04 00:34:30,121 INFO L134 LiptonReduction]: Checked pairs total: 6881 [2023-08-04 00:34:30,121 INFO L136 LiptonReduction]: Total number of compositions: 65 [2023-08-04 00:34:30,123 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:34:30,124 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;@a3dab52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:34:30,124 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 00:34:30,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:34:30,131 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-04 00:34:30,131 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 00:34:30,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:30,131 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:30,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:34:30,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:30,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1043348681, now seen corresponding path program 1 times [2023-08-04 00:34:30,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:30,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684913398] [2023-08-04 00:34:30,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:30,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:30,198 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 00:34:30,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:30,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684913398] [2023-08-04 00:34:30,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684913398] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:30,199 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:34:30,199 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:34:30,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231511950] [2023-08-04 00:34:30,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:30,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:30,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:30,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:30,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:34:30,208 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 191 [2023-08-04 00:34:30,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 38 transitions, 112 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 00:34:30,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:30,209 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 191 [2023-08-04 00:34:30,209 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:31,973 INFO L124 PetriNetUnfolderBase]: 12844/19664 cut-off events. [2023-08-04 00:34:31,973 INFO L125 PetriNetUnfolderBase]: For 1770/1770 co-relation queries the response was YES. [2023-08-04 00:34:32,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39351 conditions, 19664 events. 12844/19664 cut-off events. For 1770/1770 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 137351 event pairs, 9918 based on Foata normal form. 0/19166 useless extension candidates. Maximal degree in co-relation 11947. Up to 17234 conditions per place. [2023-08-04 00:34:32,125 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 28 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-04 00:34:32,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 180 flow [2023-08-04 00:34:32,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:34:32,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:34:32,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 361 transitions. [2023-08-04 00:34:32,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6300174520069808 [2023-08-04 00:34:32,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 361 transitions. [2023-08-04 00:34:32,129 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 361 transitions. [2023-08-04 00:34:32,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:32,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 361 transitions. [2023-08-04 00:34:32,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.33333333333333) internal successors, (361), 3 states have internal predecessors, (361), 0 states have call successors, (0), 0 states 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 00:34:32,134 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 00:34:32,135 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 00:34:32,135 INFO L175 Difference]: Start difference. First operand has 51 places, 38 transitions, 112 flow. Second operand 3 states and 361 transitions. [2023-08-04 00:34:32,135 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 180 flow [2023-08-04 00:34:32,142 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 174 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-04 00:34:32,143 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 118 flow [2023-08-04 00:34:32,143 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=118, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-04 00:34:32,144 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-04 00:34:32,144 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 118 flow [2023-08-04 00:34:32,145 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 00:34:32,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:32,145 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 00:34:32,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 00:34:32,145 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 00:34:32,146 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:32,146 INFO L85 PathProgramCache]: Analyzing trace with hash 555141636, now seen corresponding path program 1 times [2023-08-04 00:34:32,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:32,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540587576] [2023-08-04 00:34:32,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:32,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:32,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:32,261 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 00:34:32,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:32,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540587576] [2023-08-04 00:34:32,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540587576] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:32,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476281541] [2023-08-04 00:34:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:32,264 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:32,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:32,269 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 00:34:32,271 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 00:34:32,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:32,336 INFO L262 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:34:32,337 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:32,390 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 00:34:32,391 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:34:32,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1476281541] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:32,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:34:32,391 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:34:32,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709443494] [2023-08-04 00:34:32,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:32,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:32,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:32,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:32,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:34:32,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:34:32,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 118 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 00:34:32,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:32,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:34:32,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:33,971 INFO L124 PetriNetUnfolderBase]: 12832/19625 cut-off events. [2023-08-04 00:34:33,971 INFO L125 PetriNetUnfolderBase]: For 1479/1479 co-relation queries the response was YES. [2023-08-04 00:34:34,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39027 conditions, 19625 events. 12832/19625 cut-off events. For 1479/1479 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 136941 event pairs, 7728 based on Foata normal form. 9/19154 useless extension candidates. Maximal degree in co-relation 13971. Up to 17187 conditions per place. [2023-08-04 00:34:34,098 INFO L140 encePairwiseOnDemand]: 187/191 looper letters, 31 selfloop transitions, 4 changer transitions 0/46 dead transitions. [2023-08-04 00:34:34,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 202 flow [2023-08-04 00:34:34,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:34:34,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:34:34,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 581 transitions. [2023-08-04 00:34:34,101 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6083769633507854 [2023-08-04 00:34:34,101 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 581 transitions. [2023-08-04 00:34:34,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 581 transitions. [2023-08-04 00:34:34,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:34,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 581 transitions. [2023-08-04 00:34:34,103 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 116.2) internal successors, (581), 5 states have internal predecessors, (581), 0 states have call successors, (0), 0 states 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 00:34:34,105 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 00:34:34,106 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 00:34:34,106 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 118 flow. Second operand 5 states and 581 transitions. [2023-08-04 00:34:34,106 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 202 flow [2023-08-04 00:34:34,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 46 transitions, 199 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 00:34:34,108 INFO L231 Difference]: Finished difference. Result has 57 places, 39 transitions, 132 flow [2023-08-04 00:34:34,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=57, PETRI_TRANSITIONS=39} [2023-08-04 00:34:34,110 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 6 predicate places. [2023-08-04 00:34:34,110 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 39 transitions, 132 flow [2023-08-04 00:34:34,111 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 00:34:34,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:34,111 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:34,125 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 00:34:34,325 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 00:34:34,326 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:34:34,326 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:34,327 INFO L85 PathProgramCache]: Analyzing trace with hash -480363197, now seen corresponding path program 1 times [2023-08-04 00:34:34,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:34,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697093937] [2023-08-04 00:34:34,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:34,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:34,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:34,390 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 00:34:34,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:34,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697093937] [2023-08-04 00:34:34,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697093937] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:34,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108706] [2023-08-04 00:34:34,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:34,391 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:34,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:34,393 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 00:34:34,395 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 00:34:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:34,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:34:34,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:34,478 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 00:34:34,478 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:34:34,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108706] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:34,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:34:34,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:34:34,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481805534] [2023-08-04 00:34:34,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:34,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:34,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:34,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:34,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:34,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 191 [2023-08-04 00:34:34,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 39 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 00:34:34,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:34,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 191 [2023-08-04 00:34:34,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:35,723 INFO L124 PetriNetUnfolderBase]: 12242/18740 cut-off events. [2023-08-04 00:34:35,724 INFO L125 PetriNetUnfolderBase]: For 1366/1366 co-relation queries the response was YES. [2023-08-04 00:34:35,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37339 conditions, 18740 events. 12242/18740 cut-off events. For 1366/1366 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 130841 event pairs, 9508 based on Foata normal form. 0/18404 useless extension candidates. Maximal degree in co-relation 11408. Up to 16198 conditions per place. [2023-08-04 00:34:35,826 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 33 selfloop transitions, 3 changer transitions 0/47 dead transitions. [2023-08-04 00:34:35,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 47 transitions, 220 flow [2023-08-04 00:34:35,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:34:35,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:34:35,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-04 00:34:35,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6369982547993019 [2023-08-04 00:34:35,828 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-04 00:34:35,828 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-04 00:34:35,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:35,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-04 00:34:35,830 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 00:34:35,831 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 00:34:35,831 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 00:34:35,832 INFO L175 Difference]: Start difference. First operand has 57 places, 39 transitions, 132 flow. Second operand 3 states and 365 transitions. [2023-08-04 00:34:35,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 47 transitions, 220 flow [2023-08-04 00:34:35,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 47 transitions, 213 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 00:34:35,835 INFO L231 Difference]: Finished difference. Result has 58 places, 40 transitions, 140 flow [2023-08-04 00:34:35,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=125, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=58, PETRI_TRANSITIONS=40} [2023-08-04 00:34:35,836 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-04 00:34:35,836 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 40 transitions, 140 flow [2023-08-04 00:34:35,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 0 states have call successors, (0), 0 states 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 00:34:35,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:35,837 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:35,842 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 00:34:36,042 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 00:34:36,043 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 00:34:36,043 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:36,043 INFO L85 PathProgramCache]: Analyzing trace with hash -789740424, now seen corresponding path program 1 times [2023-08-04 00:34:36,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:36,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673185062] [2023-08-04 00:34:36,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:36,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:36,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:36,083 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 00:34:36,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673185062] [2023-08-04 00:34:36,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673185062] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:36,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821228497] [2023-08-04 00:34:36,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:36,084 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:36,090 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 00:34:36,095 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 00:34:36,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:36,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:34:36,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:36,183 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 00:34:36,183 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:34:36,200 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 00:34:36,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821228497] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:34:36,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:34:36,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 00:34:36,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445905613] [2023-08-04 00:34:36,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:34:36,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:36,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:36,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:36,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:36,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:34:36,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 40 transitions, 140 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 00:34:36,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:36,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:34:36,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:37,246 INFO L124 PetriNetUnfolderBase]: 9694/14591 cut-off events. [2023-08-04 00:34:37,246 INFO L125 PetriNetUnfolderBase]: For 1233/1233 co-relation queries the response was YES. [2023-08-04 00:34:37,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 29316 conditions, 14591 events. 9694/14591 cut-off events. For 1233/1233 co-relation queries the response was YES. Maximal size of possible extension queue 635. Compared 95632 event pairs, 5616 based on Foata normal form. 3/14450 useless extension candidates. Maximal degree in co-relation 10429. Up to 12736 conditions per place. [2023-08-04 00:34:37,315 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 32 selfloop transitions, 3 changer transitions 0/46 dead transitions. [2023-08-04 00:34:37,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 46 transitions, 217 flow [2023-08-04 00:34:37,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:34:37,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:34:37,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 471 transitions. [2023-08-04 00:34:37,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6164921465968587 [2023-08-04 00:34:37,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 471 transitions. [2023-08-04 00:34:37,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 471 transitions. [2023-08-04 00:34:37,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:37,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 471 transitions. [2023-08-04 00:34:37,320 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 00:34:37,321 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 00:34:37,322 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 00:34:37,322 INFO L175 Difference]: Start difference. First operand has 58 places, 40 transitions, 140 flow. Second operand 4 states and 471 transitions. [2023-08-04 00:34:37,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 46 transitions, 217 flow [2023-08-04 00:34:37,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 46 transitions, 215 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:34:37,325 INFO L231 Difference]: Finished difference. Result has 60 places, 39 transitions, 135 flow [2023-08-04 00:34:37,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=129, 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=135, PETRI_PLACES=60, PETRI_TRANSITIONS=39} [2023-08-04 00:34:37,327 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-08-04 00:34:37,328 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 39 transitions, 135 flow [2023-08-04 00:34:37,328 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 00:34:37,328 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:37,328 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:37,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 00:34:37,534 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 00:34:37,534 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 00:34:37,534 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 618729251, now seen corresponding path program 1 times [2023-08-04 00:34:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:37,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400750514] [2023-08-04 00:34:37,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:37,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:37,624 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 00:34:37,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:37,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400750514] [2023-08-04 00:34:37,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400750514] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:37,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1426763244] [2023-08-04 00:34:37,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:37,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:37,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:37,627 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 00:34:37,630 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 00:34:37,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:37,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:34:37,701 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:37,725 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 00:34:37,725 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:34:37,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1426763244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:37,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:34:37,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 00:34:37,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084520349] [2023-08-04 00:34:37,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:37,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:37,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:37,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:37,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:34:37,742 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:34:37,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 39 transitions, 135 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 00:34:37,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:37,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:34:37,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:38,492 INFO L124 PetriNetUnfolderBase]: 9478/14173 cut-off events. [2023-08-04 00:34:38,493 INFO L125 PetriNetUnfolderBase]: For 1006/1006 co-relation queries the response was YES. [2023-08-04 00:34:38,517 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28560 conditions, 14173 events. 9478/14173 cut-off events. For 1006/1006 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 91990 event pairs, 2182 based on Foata normal form. 81/14137 useless extension candidates. Maximal degree in co-relation 10157. Up to 11907 conditions per place. [2023-08-04 00:34:38,567 INFO L140 encePairwiseOnDemand]: 187/191 looper letters, 44 selfloop transitions, 4 changer transitions 0/58 dead transitions. [2023-08-04 00:34:38,567 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 58 transitions, 269 flow [2023-08-04 00:34:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:34:38,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:34:38,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 593 transitions. [2023-08-04 00:34:38,571 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6209424083769634 [2023-08-04 00:34:38,571 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 593 transitions. [2023-08-04 00:34:38,571 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 593 transitions. [2023-08-04 00:34:38,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:38,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 593 transitions. [2023-08-04 00:34:38,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 118.6) internal successors, (593), 5 states have internal predecessors, (593), 0 states have call successors, (0), 0 states 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 00:34:38,576 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 00:34:38,576 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 00:34:38,576 INFO L175 Difference]: Start difference. First operand has 60 places, 39 transitions, 135 flow. Second operand 5 states and 593 transitions. [2023-08-04 00:34:38,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 58 transitions, 269 flow [2023-08-04 00:34:38,578 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 58 transitions, 262 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 00:34:38,578 INFO L231 Difference]: Finished difference. Result has 61 places, 39 transitions, 145 flow [2023-08-04 00:34:38,579 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=145, PETRI_PLACES=61, PETRI_TRANSITIONS=39} [2023-08-04 00:34:38,580 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 10 predicate places. [2023-08-04 00:34:38,580 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 39 transitions, 145 flow [2023-08-04 00:34:38,580 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 00:34:38,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:38,581 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 00:34:38,589 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 00:34:38,789 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 00:34:38,789 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:34:38,789 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:38,789 INFO L85 PathProgramCache]: Analyzing trace with hash -430130509, now seen corresponding path program 1 times [2023-08-04 00:34:38,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:38,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678510612] [2023-08-04 00:34:38,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:38,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:38,864 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 00:34:38,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:38,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678510612] [2023-08-04 00:34:38,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678510612] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:38,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1906395306] [2023-08-04 00:34:38,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:38,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:38,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:38,867 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 00:34:38,872 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 00:34:38,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:38,947 INFO L262 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:34:38,948 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:38,976 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 00:34:38,976 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:34:38,988 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 00:34:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1906395306] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:34:38,989 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:34:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:34:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905681422] [2023-08-04 00:34:38,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:34:38,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:38,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:39,001 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 191 [2023-08-04 00:34:39,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 39 transitions, 145 flow. Second operand has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:34:39,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:39,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 191 [2023-08-04 00:34:39,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:39,617 INFO L124 PetriNetUnfolderBase]: 7588/11203 cut-off events. [2023-08-04 00:34:39,617 INFO L125 PetriNetUnfolderBase]: For 1324/1324 co-relation queries the response was YES. [2023-08-04 00:34:39,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 22923 conditions, 11203 events. 7588/11203 cut-off events. For 1324/1324 co-relation queries the response was YES. Maximal size of possible extension queue 563. Compared 68960 event pairs, 4450 based on Foata normal form. 27/11140 useless extension candidates. Maximal degree in co-relation 8129. Up to 9394 conditions per place. [2023-08-04 00:34:39,679 INFO L140 encePairwiseOnDemand]: 188/191 looper letters, 40 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-08-04 00:34:39,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 255 flow [2023-08-04 00:34:39,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:34:39,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:34:39,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 479 transitions. [2023-08-04 00:34:39,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6269633507853403 [2023-08-04 00:34:39,681 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 479 transitions. [2023-08-04 00:34:39,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 479 transitions. [2023-08-04 00:34:39,681 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:39,681 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 479 transitions. [2023-08-04 00:34:39,683 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 00:34:39,684 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 00:34:39,684 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 00:34:39,684 INFO L175 Difference]: Start difference. First operand has 61 places, 39 transitions, 145 flow. Second operand 4 states and 479 transitions. [2023-08-04 00:34:39,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 255 flow [2023-08-04 00:34:39,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 53 transitions, 250 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 00:34:39,687 INFO L231 Difference]: Finished difference. Result has 62 places, 38 transitions, 138 flow [2023-08-04 00:34:39,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=138, PETRI_PLACES=62, PETRI_TRANSITIONS=38} [2023-08-04 00:34:39,688 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-04 00:34:39,688 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 38 transitions, 138 flow [2023-08-04 00:34:39,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:34:39,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:39,689 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 00:34:39,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 00:34:39,894 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 00:34:39,894 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:34:39,895 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:39,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1851250951, now seen corresponding path program 1 times [2023-08-04 00:34:39,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:39,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674252475] [2023-08-04 00:34:39,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:39,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:39,979 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 00:34:39,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:39,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674252475] [2023-08-04 00:34:39,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674252475] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:39,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943226368] [2023-08-04 00:34:39,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:39,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:39,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:39,982 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 00:34:39,984 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 00:34:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:40,077 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:34:40,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:40,098 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 00:34:40,098 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:34:40,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943226368] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:40,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:34:40,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:34:40,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595376124] [2023-08-04 00:34:40,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:40,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 00:34:40,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:40,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 00:34:40,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:40,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 191 [2023-08-04 00:34:40,112 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 38 transitions, 138 flow. Second operand has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 00:34:40,112 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:40,112 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 191 [2023-08-04 00:34:40,112 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:40,574 INFO L124 PetriNetUnfolderBase]: 4672/7036 cut-off events. [2023-08-04 00:34:40,574 INFO L125 PetriNetUnfolderBase]: For 1198/1198 co-relation queries the response was YES. [2023-08-04 00:34:40,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14895 conditions, 7036 events. 4672/7036 cut-off events. For 1198/1198 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 40837 event pairs, 568 based on Foata normal form. 729/7675 useless extension candidates. Maximal degree in co-relation 7349. Up to 4212 conditions per place. [2023-08-04 00:34:40,592 INFO L140 encePairwiseOnDemand]: 189/191 looper letters, 0 selfloop transitions, 0 changer transitions 55/55 dead transitions. [2023-08-04 00:34:40,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 55 transitions, 262 flow [2023-08-04 00:34:40,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:34:40,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:34:40,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 485 transitions. [2023-08-04 00:34:40,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6348167539267016 [2023-08-04 00:34:40,594 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 485 transitions. [2023-08-04 00:34:40,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 485 transitions. [2023-08-04 00:34:40,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:40,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 485 transitions. [2023-08-04 00:34:40,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 121.25) internal successors, (485), 4 states have internal predecessors, (485), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:34:40,597 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 00:34:40,597 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 00:34:40,598 INFO L175 Difference]: Start difference. First operand has 62 places, 38 transitions, 138 flow. Second operand 4 states and 485 transitions. [2023-08-04 00:34:40,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 55 transitions, 262 flow [2023-08-04 00:34:40,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 55 transitions, 255 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 00:34:40,621 INFO L231 Difference]: Finished difference. Result has 60 places, 0 transitions, 0 flow [2023-08-04 00:34:40,621 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=191, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=60, PETRI_TRANSITIONS=0} [2023-08-04 00:34:40,622 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 9 predicate places. [2023-08-04 00:34:40,622 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 0 transitions, 0 flow [2023-08-04 00:34:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 113.75) internal successors, (455), 4 states have internal predecessors, (455), 0 states have call successors, (0), 0 states 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 00:34:40,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 00:34:40,622 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 00:34:40,623 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 00:34:40,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 00:34:40,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:40,828 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:40,828 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 00:34:40,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 134 places, 126 transitions, 288 flow [2023-08-04 00:34:40,904 INFO L124 PetriNetUnfolderBase]: 93/1303 cut-off events. [2023-08-04 00:34:40,904 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:34:40,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 1303 events. 93/1303 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 8849 event pairs, 0 based on Foata normal form. 0/1144 useless extension candidates. Maximal degree in co-relation 944. Up to 54 conditions per place. [2023-08-04 00:34:40,906 INFO L82 GeneralOperation]: Start removeDead. Operand has 134 places, 126 transitions, 288 flow [2023-08-04 00:34:40,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 120 places, 111 transitions, 246 flow [2023-08-04 00:34:40,908 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:34:40,908 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 120 places, 111 transitions, 246 flow [2023-08-04 00:34:40,908 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 120 places, 111 transitions, 246 flow [2023-08-04 00:34:40,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 111 transitions, 246 flow [2023-08-04 00:34:40,959 INFO L124 PetriNetUnfolderBase]: 66/966 cut-off events. [2023-08-04 00:34:40,959 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 00:34:40,960 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 966 events. 66/966 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 5995 event pairs, 0 based on Foata normal form. 0/861 useless extension candidates. Maximal degree in co-relation 716. Up to 54 conditions per place. [2023-08-04 00:34:40,970 INFO L119 LiptonReduction]: Number of co-enabled transitions 3996 [2023-08-04 00:34:42,629 INFO L134 LiptonReduction]: Checked pairs total: 8473 [2023-08-04 00:34:42,629 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-04 00:34:42,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 00:34:42,631 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;@a3dab52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:34:42,631 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 00:34:42,633 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:34:42,633 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-04 00:34:42,633 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:34:42,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:42,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 00:34:42,633 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:42,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:42,634 INFO L85 PathProgramCache]: Analyzing trace with hash 618914221, now seen corresponding path program 1 times [2023-08-04 00:34:42,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:42,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [207418360] [2023-08-04 00:34:42,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:42,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:42,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:42,661 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 00:34:42,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:42,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [207418360] [2023-08-04 00:34:42,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [207418360] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:42,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:34:42,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:34:42,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026643200] [2023-08-04 00:34:42,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:42,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:42,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:42,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:42,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:34:42,670 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 208 [2023-08-04 00:34:42,671 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 102 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 00:34:42,671 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:42,671 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 208 [2023-08-04 00:34:42,671 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:45,555 INFO L124 PetriNetUnfolderBase]: 33046/47789 cut-off events. [2023-08-04 00:34:45,555 INFO L125 PetriNetUnfolderBase]: For 1449/1449 co-relation queries the response was YES. [2023-08-04 00:34:45,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93180 conditions, 47789 events. 33046/47789 cut-off events. For 1449/1449 co-relation queries the response was YES. Maximal size of possible extension queue 1632. Compared 334495 event pairs, 26064 based on Foata normal form. 0/45338 useless extension candidates. Maximal degree in co-relation 26572. Up to 43520 conditions per place. [2023-08-04 00:34:45,724 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 31 selfloop transitions, 2 changer transitions 0/42 dead transitions. [2023-08-04 00:34:45,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 42 transitions, 174 flow [2023-08-04 00:34:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:34:45,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:34:45,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 365 transitions. [2023-08-04 00:34:45,726 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5849358974358975 [2023-08-04 00:34:45,726 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 365 transitions. [2023-08-04 00:34:45,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 365 transitions. [2023-08-04 00:34:45,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:45,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 365 transitions. [2023-08-04 00:34:45,727 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 00:34:45,728 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 00:34:45,728 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 00:34:45,728 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 102 flow. Second operand 3 states and 365 transitions. [2023-08-04 00:34:45,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 42 transitions, 174 flow [2023-08-04 00:34:45,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 42 transitions, 174 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:34:45,730 INFO L231 Difference]: Finished difference. Result has 54 places, 39 transitions, 112 flow [2023-08-04 00:34:45,730 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=51, 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=112, PETRI_PLACES=54, PETRI_TRANSITIONS=39} [2023-08-04 00:34:45,731 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 3 predicate places. [2023-08-04 00:34:45,731 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 39 transitions, 112 flow [2023-08-04 00:34:45,731 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 00:34:45,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:45,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:45,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 00:34:45,731 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:45,732 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:45,732 INFO L85 PathProgramCache]: Analyzing trace with hash -578408932, now seen corresponding path program 1 times [2023-08-04 00:34:45,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:45,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554645366] [2023-08-04 00:34:45,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:45,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:45,763 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 00:34:45,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:45,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554645366] [2023-08-04 00:34:45,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554645366] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:45,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939036774] [2023-08-04 00:34:45,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:45,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:45,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:45,765 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 00:34:45,788 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 00:34:45,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:45,846 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:34:45,847 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:45,852 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 00:34:45,852 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:34:45,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939036774] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:45,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:34:45,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:34:45,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958794433] [2023-08-04 00:34:45,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:45,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:45,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:45,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:45,861 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 208 [2023-08-04 00:34:45,861 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 39 transitions, 112 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 00:34:45,861 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:45,861 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 208 [2023-08-04 00:34:45,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:48,358 INFO L124 PetriNetUnfolderBase]: 31406/44873 cut-off events. [2023-08-04 00:34:48,359 INFO L125 PetriNetUnfolderBase]: For 1143/1143 co-relation queries the response was YES. [2023-08-04 00:34:48,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 87754 conditions, 44873 events. 31406/44873 cut-off events. For 1143/1143 co-relation queries the response was YES. Maximal size of possible extension queue 1587. Compared 307242 event pairs, 24928 based on Foata normal form. 0/42629 useless extension candidates. Maximal degree in co-relation 87717. Up to 40987 conditions per place. [2023-08-04 00:34:48,543 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 36 selfloop transitions, 2 changer transitions 0/47 dead transitions. [2023-08-04 00:34:48,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 47 transitions, 204 flow [2023-08-04 00:34:48,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:34:48,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:34:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 368 transitions. [2023-08-04 00:34:48,544 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5897435897435898 [2023-08-04 00:34:48,545 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 368 transitions. [2023-08-04 00:34:48,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 368 transitions. [2023-08-04 00:34:48,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:48,545 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 368 transitions. [2023-08-04 00:34:48,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.66666666666667) internal successors, (368), 3 states have internal predecessors, (368), 0 states have call successors, (0), 0 states 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 00:34:48,547 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 00:34:48,547 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 00:34:48,547 INFO L175 Difference]: Start difference. First operand has 54 places, 39 transitions, 112 flow. Second operand 3 states and 368 transitions. [2023-08-04 00:34:48,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 47 transitions, 204 flow [2023-08-04 00:34:48,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 47 transitions, 202 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:34:48,548 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 122 flow [2023-08-04 00:34:48,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=122, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-08-04 00:34:48,549 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 5 predicate places. [2023-08-04 00:34:48,549 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 122 flow [2023-08-04 00:34:48,549 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 00:34:48,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:48,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:34:48,554 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 00:34:48,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:48,750 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:48,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:48,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1997340784, now seen corresponding path program 1 times [2023-08-04 00:34:48,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:48,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677327573] [2023-08-04 00:34:48,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:48,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:48,782 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 00:34:48,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677327573] [2023-08-04 00:34:48,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677327573] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:48,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1796744900] [2023-08-04 00:34:48,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:48,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:48,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:48,784 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 00:34:48,787 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 00:34:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:48,856 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:34:48,857 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:48,861 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 00:34:48,862 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:34:48,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1796744900] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:48,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:34:48,862 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:34:48,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859639409] [2023-08-04 00:34:48,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:48,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:48,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:48,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:48,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:48,870 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 208 [2023-08-04 00:34:48,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 122 flow. Second operand has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 00:34:48,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:48,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 208 [2023-08-04 00:34:48,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:51,543 INFO L124 PetriNetUnfolderBase]: 30734/43358 cut-off events. [2023-08-04 00:34:51,544 INFO L125 PetriNetUnfolderBase]: For 833/833 co-relation queries the response was YES. [2023-08-04 00:34:51,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85613 conditions, 43358 events. 30734/43358 cut-off events. For 833/833 co-relation queries the response was YES. Maximal size of possible extension queue 1567. Compared 290432 event pairs, 23582 based on Foata normal form. 0/41471 useless extension candidates. Maximal degree in co-relation 24344. Up to 37757 conditions per place. [2023-08-04 00:34:51,723 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 41 selfloop transitions, 2 changer transitions 0/52 dead transitions. [2023-08-04 00:34:51,723 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 52 transitions, 232 flow [2023-08-04 00:34:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:34:51,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:34:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 372 transitions. [2023-08-04 00:34:51,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5961538461538461 [2023-08-04 00:34:51,724 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 372 transitions. [2023-08-04 00:34:51,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 372 transitions. [2023-08-04 00:34:51,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:51,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 372 transitions. [2023-08-04 00:34:51,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 124.0) internal successors, (372), 3 states have internal predecessors, (372), 0 states have call successors, (0), 0 states 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 00:34:51,726 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 00:34:51,726 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 00:34:51,727 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 122 flow. Second operand 3 states and 372 transitions. [2023-08-04 00:34:51,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 52 transitions, 232 flow [2023-08-04 00:34:51,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 52 transitions, 230 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:34:51,728 INFO L231 Difference]: Finished difference. Result has 58 places, 41 transitions, 132 flow [2023-08-04 00:34:51,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=132, PETRI_PLACES=58, PETRI_TRANSITIONS=41} [2023-08-04 00:34:51,729 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 7 predicate places. [2023-08-04 00:34:51,729 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 41 transitions, 132 flow [2023-08-04 00:34:51,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.66666666666667) internal successors, (341), 3 states have internal predecessors, (341), 0 states have call successors, (0), 0 states 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 00:34:51,729 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:51,729 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 00:34:51,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 00:34:51,935 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,SelfDestructingSolverStorable11 [2023-08-04 00:34:51,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:51,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1219422878, now seen corresponding path program 1 times [2023-08-04 00:34:51,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:51,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854337982] [2023-08-04 00:34:51,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:51,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:51,980 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 00:34:51,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:51,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854337982] [2023-08-04 00:34:51,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854337982] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:51,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817019973] [2023-08-04 00:34:51,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:51,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:51,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:51,982 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 00:34:51,986 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 00:34:52,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:52,063 INFO L262 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:34:52,064 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:52,076 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 00:34:52,076 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:34:52,090 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 00:34:52,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [817019973] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:34:52,090 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:34:52,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 00:34:52,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000879804] [2023-08-04 00:34:52,091 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:34:52,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:52,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:52,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:52,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-04 00:34:52,106 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 41 transitions, 132 flow. Second operand has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 00:34:52,106 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:52,106 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-04 00:34:52,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:54,081 INFO L124 PetriNetUnfolderBase]: 24232/33893 cut-off events. [2023-08-04 00:34:54,081 INFO L125 PetriNetUnfolderBase]: For 3624/3624 co-relation queries the response was YES. [2023-08-04 00:34:54,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69782 conditions, 33893 events. 24232/33893 cut-off events. For 3624/3624 co-relation queries the response was YES. Maximal size of possible extension queue 1260. Compared 213755 event pairs, 14820 based on Foata normal form. 3/33752 useless extension candidates. Maximal degree in co-relation 24810. Up to 31258 conditions per place. [2023-08-04 00:34:54,231 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 36 selfloop transitions, 3 changer transitions 1/49 dead transitions. [2023-08-04 00:34:54,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 49 transitions, 228 flow [2023-08-04 00:34:54,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:34:54,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:34:54,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 475 transitions. [2023-08-04 00:34:54,233 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5709134615384616 [2023-08-04 00:34:54,233 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 475 transitions. [2023-08-04 00:34:54,233 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 475 transitions. [2023-08-04 00:34:54,233 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:54,233 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 475 transitions. [2023-08-04 00:34:54,234 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 00:34:54,235 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 00:34:54,235 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 00:34:54,235 INFO L175 Difference]: Start difference. First operand has 58 places, 41 transitions, 132 flow. Second operand 4 states and 475 transitions. [2023-08-04 00:34:54,235 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 49 transitions, 228 flow [2023-08-04 00:34:54,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 226 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:34:54,239 INFO L231 Difference]: Finished difference. Result has 62 places, 41 transitions, 144 flow [2023-08-04 00:34:54,239 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=144, PETRI_PLACES=62, PETRI_TRANSITIONS=41} [2023-08-04 00:34:54,239 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 11 predicate places. [2023-08-04 00:34:54,240 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 41 transitions, 144 flow [2023-08-04 00:34:54,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.6) internal successors, (563), 5 states have internal predecessors, (563), 0 states have call successors, (0), 0 states 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 00:34:54,240 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:54,240 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 00:34:54,247 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-04 00:34:54,445 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,SelfDestructingSolverStorable12 [2023-08-04 00:34:54,446 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:54,446 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:54,446 INFO L85 PathProgramCache]: Analyzing trace with hash 931962258, now seen corresponding path program 1 times [2023-08-04 00:34:54,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:54,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321167179] [2023-08-04 00:34:54,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:54,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:54,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:54,485 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 00:34:54,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321167179] [2023-08-04 00:34:54,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321167179] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:54,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584674474] [2023-08-04 00:34:54,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:54,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:54,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:54,488 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 00:34:54,508 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 00:34:54,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:54,572 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:34:54,573 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:54,586 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 00:34:54,586 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:34:54,601 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 00:34:54,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584674474] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:34:54,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:34:54,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:34:54,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889587445] [2023-08-04 00:34:54,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:34:54,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:54,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:54,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:54,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:54,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-04 00:34:54,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 41 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 00:34:54,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:54,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-04 00:34:54,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:56,393 INFO L124 PetriNetUnfolderBase]: 19198/26485 cut-off events. [2023-08-04 00:34:56,394 INFO L125 PetriNetUnfolderBase]: For 2439/2439 co-relation queries the response was YES. [2023-08-04 00:34:56,443 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54371 conditions, 26485 events. 19198/26485 cut-off events. For 2439/2439 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 160034 event pairs, 11902 based on Foata normal form. 27/26422 useless extension candidates. Maximal degree in co-relation 19295. Up to 23785 conditions per place. [2023-08-04 00:34:56,511 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 44 selfloop transitions, 3 changer transitions 1/57 dead transitions. [2023-08-04 00:34:56,511 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 272 flow [2023-08-04 00:34:56,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:34:56,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:34:56,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-04 00:34:56,513 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805288461538461 [2023-08-04 00:34:56,513 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-04 00:34:56,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-04 00:34:56,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:56,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-04 00:34:56,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:34:56,516 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 00:34:56,516 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 00:34:56,516 INFO L175 Difference]: Start difference. First operand has 62 places, 41 transitions, 144 flow. Second operand 4 states and 483 transitions. [2023-08-04 00:34:56,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 272 flow [2023-08-04 00:34:56,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 57 transitions, 265 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 00:34:56,520 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 151 flow [2023-08-04 00:34:56,520 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-04 00:34:56,520 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 13 predicate places. [2023-08-04 00:34:56,521 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 151 flow [2023-08-04 00:34:56,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.8) internal successors, (564), 5 states have internal predecessors, (564), 0 states have call successors, (0), 0 states 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 00:34:56,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:56,521 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 00:34:56,526 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 00:34:56,724 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,SelfDestructingSolverStorable13 [2023-08-04 00:34:56,724 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:56,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1568369627, now seen corresponding path program 1 times [2023-08-04 00:34:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173010758] [2023-08-04 00:34:56,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:56,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:56,785 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 00:34:56,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173010758] [2023-08-04 00:34:56,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173010758] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:34:56,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1756751836] [2023-08-04 00:34:56,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:56,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:34:56,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:34:56,787 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 00:34:56,790 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 00:34:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:56,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:34:56,880 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:34:56,891 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 00:34:56,891 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:34:56,906 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 00:34:56,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1756751836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:34:56,906 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:34:56,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:34:56,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152406427] [2023-08-04 00:34:56,907 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:34:56,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:34:56,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:56,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:34:56,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:34:56,920 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 208 [2023-08-04 00:34:56,921 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 00:34:56,921 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:56,921 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 208 [2023-08-04 00:34:56,922 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:34:58,320 INFO L124 PetriNetUnfolderBase]: 17362/23209 cut-off events. [2023-08-04 00:34:58,320 INFO L125 PetriNetUnfolderBase]: For 2377/2377 co-relation queries the response was YES. [2023-08-04 00:34:58,365 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48754 conditions, 23209 events. 17362/23209 cut-off events. For 2377/2377 co-relation queries the response was YES. Maximal size of possible extension queue 998. Compared 127948 event pairs, 6886 based on Foata normal form. 243/23362 useless extension candidates. Maximal degree in co-relation 17297. Up to 11794 conditions per place. [2023-08-04 00:34:58,421 INFO L140 encePairwiseOnDemand]: 204/208 looper letters, 52 selfloop transitions, 3 changer transitions 1/65 dead transitions. [2023-08-04 00:34:58,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 311 flow [2023-08-04 00:34:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:34:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:34:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 491 transitions. [2023-08-04 00:34:58,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5901442307692307 [2023-08-04 00:34:58,423 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 491 transitions. [2023-08-04 00:34:58,423 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 491 transitions. [2023-08-04 00:34:58,423 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:34:58,423 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 491 transitions. [2023-08-04 00:34:58,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 122.75) internal successors, (491), 4 states have internal predecessors, (491), 0 states have call successors, (0), 0 states 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 00:34:58,425 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 00:34:58,425 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 00:34:58,425 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 151 flow. Second operand 4 states and 491 transitions. [2023-08-04 00:34:58,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 311 flow [2023-08-04 00:34:58,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 304 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 00:34:58,429 INFO L231 Difference]: Finished difference. Result has 66 places, 41 transitions, 158 flow [2023-08-04 00:34:58,429 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=66, PETRI_TRANSITIONS=41} [2023-08-04 00:34:58,429 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 15 predicate places. [2023-08-04 00:34:58,429 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 41 transitions, 158 flow [2023-08-04 00:34:58,430 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 113.0) internal successors, (565), 5 states have internal predecessors, (565), 0 states have call successors, (0), 0 states 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 00:34:58,430 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:34:58,430 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 00:34:58,437 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 00:34:58,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-04 00:34:58,635 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:34:58,635 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:34:58,636 INFO L85 PathProgramCache]: Analyzing trace with hash -835031304, now seen corresponding path program 1 times [2023-08-04 00:34:58,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:34:58,636 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649410063] [2023-08-04 00:34:58,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:34:58,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:34:58,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:34:58,815 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 00:34:58,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:34:58,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649410063] [2023-08-04 00:34:58,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649410063] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:34:58,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:34:58,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 00:34:58,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560460489] [2023-08-04 00:34:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:34:58,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:34:58,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:34:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:34:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:34:58,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 208 [2023-08-04 00:34:58,837 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 41 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 00:34:58,837 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:34:58,837 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 208 [2023-08-04 00:34:58,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:35:09,921 INFO L124 PetriNetUnfolderBase]: 153466/193368 cut-off events. [2023-08-04 00:35:09,921 INFO L125 PetriNetUnfolderBase]: For 90276/90276 co-relation queries the response was YES. [2023-08-04 00:35:10,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 440096 conditions, 193368 events. 153466/193368 cut-off events. For 90276/90276 co-relation queries the response was YES. Maximal size of possible extension queue 5253. Compared 1074179 event pairs, 64370 based on Foata normal form. 3953/197109 useless extension candidates. Maximal degree in co-relation 242245. Up to 96113 conditions per place. [2023-08-04 00:35:10,907 INFO L140 encePairwiseOnDemand]: 194/208 looper letters, 60 selfloop transitions, 13 changer transitions 0/76 dead transitions. [2023-08-04 00:35:10,907 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 76 transitions, 444 flow [2023-08-04 00:35:10,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:35:10,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:35:10,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-04 00:35:10,908 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5801282051282052 [2023-08-04 00:35:10,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-04 00:35:10,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-04 00:35:10,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:35:10,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-04 00:35:10,910 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 00:35:10,910 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 00:35:10,911 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 00:35:10,911 INFO L175 Difference]: Start difference. First operand has 66 places, 41 transitions, 158 flow. Second operand 3 states and 362 transitions. [2023-08-04 00:35:10,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 76 transitions, 444 flow [2023-08-04 00:35:11,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 76 transitions, 430 flow, removed 2 selfloop flow, removed 3 redundant places. [2023-08-04 00:35:11,235 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 253 flow [2023-08-04 00:35:11,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=151, 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=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=253, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-08-04 00:35:11,235 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 16 predicate places. [2023-08-04 00:35:11,235 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 253 flow [2023-08-04 00:35:11,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 103.66666666666667) internal successors, (311), 3 states have internal predecessors, (311), 0 states have call successors, (0), 0 states 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 00:35:11,236 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:35:11,236 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 00:35:11,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-04 00:35:11,236 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:35:11,236 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:35:11,236 INFO L85 PathProgramCache]: Analyzing trace with hash -116167458, now seen corresponding path program 1 times [2023-08-04 00:35:11,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:35:11,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880576059] [2023-08-04 00:35:11,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:11,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:35:11,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:11,583 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 00:35:11,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:35:11,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880576059] [2023-08-04 00:35:11,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880576059] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:35:11,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:35:11,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:35:11,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103394746] [2023-08-04 00:35:11,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:35:11,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 00:35:11,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:35:11,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 00:35:11,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 00:35:11,606 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 208 [2023-08-04 00:35:11,607 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 253 flow. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:35:11,607 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:35:11,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 208 [2023-08-04 00:35:11,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:35:22,293 INFO L124 PetriNetUnfolderBase]: 151525/190752 cut-off events. [2023-08-04 00:35:22,293 INFO L125 PetriNetUnfolderBase]: For 143003/143003 co-relation queries the response was YES. [2023-08-04 00:35:22,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 584757 conditions, 190752 events. 151525/190752 cut-off events. For 143003/143003 co-relation queries the response was YES. Maximal size of possible extension queue 5194. Compared 1047796 event pairs, 14548 based on Foata normal form. 220/190963 useless extension candidates. Maximal degree in co-relation 234322. Up to 86220 conditions per place. [2023-08-04 00:35:23,610 INFO L140 encePairwiseOnDemand]: 194/208 looper letters, 73 selfloop transitions, 17 changer transitions 0/93 dead transitions. [2023-08-04 00:35:23,610 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 93 transitions, 607 flow [2023-08-04 00:35:23,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:35:23,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:35:23,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 468 transitions. [2023-08-04 00:35:23,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-04 00:35:23,612 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 468 transitions. [2023-08-04 00:35:23,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 468 transitions. [2023-08-04 00:35:23,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:35:23,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 468 transitions. [2023-08-04 00:35:23,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 117.0) internal successors, (468), 4 states have internal predecessors, (468), 0 states have call successors, (0), 0 states 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 00:35:23,614 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 00:35:23,614 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 00:35:23,614 INFO L175 Difference]: Start difference. First operand has 67 places, 53 transitions, 253 flow. Second operand 4 states and 468 transitions. [2023-08-04 00:35:23,614 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 93 transitions, 607 flow [2023-08-04 00:35:23,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 93 transitions, 561 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 00:35:23,927 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 365 flow [2023-08-04 00:35:23,927 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=365, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2023-08-04 00:35:23,927 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 20 predicate places. [2023-08-04 00:35:23,927 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 365 flow [2023-08-04 00:35:23,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:35:23,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:35:23,928 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 00:35:23,928 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-08-04 00:35:23,928 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:35:23,928 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:35:23,928 INFO L85 PathProgramCache]: Analyzing trace with hash -116167520, now seen corresponding path program 1 times [2023-08-04 00:35:23,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:35:23,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353551280] [2023-08-04 00:35:23,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:23,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:35:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:24,120 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 00:35:24,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:35:24,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353551280] [2023-08-04 00:35:24,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353551280] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:35:24,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:35:24,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:35:24,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24845469] [2023-08-04 00:35:24,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:35:24,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 00:35:24,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:35:24,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 00:35:24,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 00:35:24,139 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 208 [2023-08-04 00:35:24,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 365 flow. Second operand has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:35:24,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:35:24,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 208 [2023-08-04 00:35:24,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:35:35,404 INFO L124 PetriNetUnfolderBase]: 149651/188613 cut-off events. [2023-08-04 00:35:35,404 INFO L125 PetriNetUnfolderBase]: For 273381/273381 co-relation queries the response was YES. [2023-08-04 00:35:35,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 639816 conditions, 188613 events. 149651/188613 cut-off events. For 273381/273381 co-relation queries the response was YES. Maximal size of possible extension queue 5126. Compared 1032871 event pairs, 18897 based on Foata normal form. 168/188684 useless extension candidates. Maximal degree in co-relation 249030. Up to 91206 conditions per place. [2023-08-04 00:35:36,813 INFO L140 encePairwiseOnDemand]: 194/208 looper letters, 95 selfloop transitions, 29 changer transitions 0/127 dead transitions. [2023-08-04 00:35:36,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 127 transitions, 949 flow [2023-08-04 00:35:36,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:35:36,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:35:36,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 478 transitions. [2023-08-04 00:35:36,815 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5745192307692307 [2023-08-04 00:35:36,815 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 478 transitions. [2023-08-04 00:35:36,815 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 478 transitions. [2023-08-04 00:35:36,815 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:35:36,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 478 transitions. [2023-08-04 00:35:36,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 119.5) internal successors, (478), 4 states have internal predecessors, (478), 0 states have call successors, (0), 0 states 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 00:35:36,818 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 00:35:36,818 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 00:35:36,818 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 365 flow. Second operand 4 states and 478 transitions. [2023-08-04 00:35:36,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 127 transitions, 949 flow [2023-08-04 00:35:37,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 127 transitions, 949 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:35:37,031 INFO L231 Difference]: Finished difference. Result has 77 places, 85 transitions, 655 flow [2023-08-04 00:35:37,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=365, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=655, PETRI_PLACES=77, PETRI_TRANSITIONS=85} [2023-08-04 00:35:37,032 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 26 predicate places. [2023-08-04 00:35:37,032 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 85 transitions, 655 flow [2023-08-04 00:35:37,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:35:37,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:35:37,032 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 00:35:37,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-04 00:35:37,032 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:35:37,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:35:37,033 INFO L85 PathProgramCache]: Analyzing trace with hash -84525168, now seen corresponding path program 1 times [2023-08-04 00:35:37,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:35:37,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592983604] [2023-08-04 00:35:37,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:37,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:35:37,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:37,142 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 4 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:35:37,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:35:37,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592983604] [2023-08-04 00:35:37,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592983604] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:35:37,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910279010] [2023-08-04 00:35:37,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:37,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:35:37,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:35:37,145 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 00:35:37,147 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 00:35:37,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:37,256 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 00:35:37,261 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:35:37,296 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 00:35:37,296 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:35:37,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910279010] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:35:37,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:35:37,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [3] total 5 [2023-08-04 00:35:37,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397728311] [2023-08-04 00:35:37,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:35:37,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:35:37,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:35:37,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:35:37,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:35:37,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 208 [2023-08-04 00:35:37,306 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 85 transitions, 655 flow. Second operand has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 00:35:37,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:35:37,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 208 [2023-08-04 00:35:37,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:35:46,801 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][49], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 622#true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 46#L724true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 606#true, 70#L759true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 616#(= ~x~0 0), 27#L744true, 85#P2EXITtrue, 12#P0EXITtrue, 123#L788true, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), P1Thread2of2ForFork1InUse, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 00:35:46,801 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,801 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,801 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,801 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,801 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([616] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_13| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_19|) (= v_~main$tmp_guard1~0_40 (ite (= (ite (not (and (= v_~y~0_37 2) (= v_~x~0_49 2) (= 2 v_~__unbuffered_p2_EAX~0_38) (= v_~__unbuffered_p0_EAX~0_28 0))) 1 0) 0) 0 1)) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_19| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_13| (mod v_~main$tmp_guard1~0_40 256))) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_28, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_38, ~y~0=v_~y~0_37, ~x~0=v_~x~0_49} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_19|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_28, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_13|, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_40, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_38, ~y~0=v_~y~0_37, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][140], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 622#true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), 46#L724true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 606#true, 70#L759true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 27#L744true, 85#P2EXITtrue, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), P1Thread2of2ForFork1InUse, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 00:35:46,801 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,801 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,801 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,802 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][49], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 107#P0EXITtrue, 622#true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 606#true, 70#L759true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 27#L744true, 85#P2EXITtrue, 31#L724true, 123#L788true, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:35:46,917 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([616] L788-->ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: (and (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_13| |v_ULTIMATE.start___VERIFIER_assert_~expression#1_19|) (= v_~main$tmp_guard1~0_40 (ite (= (ite (not (and (= v_~y~0_37 2) (= v_~x~0_49 2) (= 2 v_~__unbuffered_p2_EAX~0_38) (= v_~__unbuffered_p0_EAX~0_28 0))) 1 0) 0) 0 1)) (= |v_ULTIMATE.start___VERIFIER_assert_~expression#1_19| 0) (= |v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_13| (mod v_~main$tmp_guard1~0_40 256))) InVars {~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_28, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_38, ~y~0=v_~y~0_37, ~x~0=v_~x~0_49} OutVars{ULTIMATE.start___VERIFIER_assert_~expression#1=|v_ULTIMATE.start___VERIFIER_assert_~expression#1_19|, ~__unbuffered_p0_EAX~0=v_~__unbuffered_p0_EAX~0_28, ULTIMATE.start___VERIFIER_assert_#in~expression#1=|v_ULTIMATE.start___VERIFIER_assert_#in~expression#1_13|, ~main$tmp_guard1~0=v_~main$tmp_guard1~0_40, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_38, ~y~0=v_~y~0_37, ~x~0=v_~x~0_49} AuxVars[] AssignedVars[ULTIMATE.start___VERIFIER_assert_~expression#1, ULTIMATE.start___VERIFIER_assert_#in~expression#1, ~main$tmp_guard1~0][140], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 107#P0EXITtrue, 622#true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 606#true, 70#L759true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 112#ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTIONtrue, 27#L744true, 85#P2EXITtrue, 31#L724true, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), P1Thread2of2ForFork1InUse, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1)]) [2023-08-04 00:35:46,917 INFO L294 olderBase$Statistics]: this new event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:46,917 INFO L297 olderBase$Statistics]: existing Event has 42 ancestors and is cut-off event [2023-08-04 00:35:47,221 INFO L124 PetriNetUnfolderBase]: 102550/134025 cut-off events. [2023-08-04 00:35:47,221 INFO L125 PetriNetUnfolderBase]: For 472777/491871 co-relation queries the response was YES. [2023-08-04 00:35:48,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 513763 conditions, 134025 events. 102550/134025 cut-off events. For 472777/491871 co-relation queries the response was YES. Maximal size of possible extension queue 5543. Compared 847752 event pairs, 16202 based on Foata normal form. 8403/134762 useless extension candidates. Maximal degree in co-relation 303218. Up to 107257 conditions per place. [2023-08-04 00:35:48,533 INFO L140 encePairwiseOnDemand]: 200/208 looper letters, 109 selfloop transitions, 7 changer transitions 0/141 dead transitions. [2023-08-04 00:35:48,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 141 transitions, 1310 flow [2023-08-04 00:35:48,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:35:48,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:35:48,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 376 transitions. [2023-08-04 00:35:48,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6025641025641025 [2023-08-04 00:35:48,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 376 transitions. [2023-08-04 00:35:48,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 376 transitions. [2023-08-04 00:35:48,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:35:48,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 376 transitions. [2023-08-04 00:35:48,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 125.33333333333333) internal successors, (376), 3 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 00:35:48,536 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 00:35:48,536 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 00:35:48,536 INFO L175 Difference]: Start difference. First operand has 77 places, 85 transitions, 655 flow. Second operand 3 states and 376 transitions. [2023-08-04 00:35:48,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 141 transitions, 1310 flow [2023-08-04 00:35:48,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 141 transitions, 1310 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:35:48,819 INFO L231 Difference]: Finished difference. Result has 80 places, 91 transitions, 702 flow [2023-08-04 00:35:48,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=655, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=702, PETRI_PLACES=80, PETRI_TRANSITIONS=91} [2023-08-04 00:35:48,819 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 29 predicate places. [2023-08-04 00:35:48,819 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 91 transitions, 702 flow [2023-08-04 00:35:48,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 113.33333333333333) internal successors, (340), 3 states have internal predecessors, (340), 0 states have call successors, (0), 0 states 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 00:35:48,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:35:48,820 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 00:35:48,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2023-08-04 00:35:49,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:35:49,021 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:35:49,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:35:49,021 INFO L85 PathProgramCache]: Analyzing trace with hash -2123717398, now seen corresponding path program 1 times [2023-08-04 00:35:49,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:35:49,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353306702] [2023-08-04 00:35:49,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:49,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:35:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:49,133 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 00:35:49,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:35:49,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353306702] [2023-08-04 00:35:49,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [353306702] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:35:49,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1787305330] [2023-08-04 00:35:49,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:49,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:35:49,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:35:49,136 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 00:35:49,158 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 00:35:49,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:49,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 00:35:49,240 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:35:49,287 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 00:35:49,287 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:35:49,381 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 00:35:49,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1787305330] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:35:49,382 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:35:49,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2023-08-04 00:35:49,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271602715] [2023-08-04 00:35:49,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:35:49,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 00:35:49,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:35:49,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 00:35:49,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-04 00:35:49,435 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 208 [2023-08-04 00:35:49,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 91 transitions, 702 flow. Second operand has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:35:49,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:35:49,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 208 [2023-08-04 00:35:49,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:35:58,018 INFO L124 PetriNetUnfolderBase]: 94561/120312 cut-off events. [2023-08-04 00:35:58,018 INFO L125 PetriNetUnfolderBase]: For 431624/431624 co-relation queries the response was YES. [2023-08-04 00:35:58,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 528159 conditions, 120312 events. 94561/120312 cut-off events. For 431624/431624 co-relation queries the response was YES. Maximal size of possible extension queue 3635. Compared 666155 event pairs, 1625 based on Foata normal form. 5042/125341 useless extension candidates. Maximal degree in co-relation 528031. Up to 36646 conditions per place. [2023-08-04 00:35:58,932 INFO L140 encePairwiseOnDemand]: 188/208 looper letters, 265 selfloop transitions, 215 changer transitions 0/483 dead transitions. [2023-08-04 00:35:58,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 483 transitions, 4617 flow [2023-08-04 00:35:58,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-04 00:35:58,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-04 00:35:58,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1389 transitions. [2023-08-04 00:35:58,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5564903846153846 [2023-08-04 00:35:58,936 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1389 transitions. [2023-08-04 00:35:58,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1389 transitions. [2023-08-04 00:35:58,937 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:35:58,937 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1389 transitions. [2023-08-04 00:35:58,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 115.75) internal successors, (1389), 12 states have internal predecessors, (1389), 0 states have call successors, (0), 0 states 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 00:35:58,943 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 208.0) internal successors, (2704), 13 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states 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 00:35:58,943 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 208.0) internal successors, (2704), 13 states have internal predecessors, (2704), 0 states have call successors, (0), 0 states 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 00:35:58,943 INFO L175 Difference]: Start difference. First operand has 80 places, 91 transitions, 702 flow. Second operand 12 states and 1389 transitions. [2023-08-04 00:35:58,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 483 transitions, 4617 flow [2023-08-04 00:35:59,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 483 transitions, 4602 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:35:59,203 INFO L231 Difference]: Finished difference. Result has 97 places, 293 transitions, 3344 flow [2023-08-04 00:35:59,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3344, PETRI_PLACES=97, PETRI_TRANSITIONS=293} [2023-08-04 00:35:59,203 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 46 predicate places. [2023-08-04 00:35:59,203 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 293 transitions, 3344 flow [2023-08-04 00:35:59,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 100.0) internal successors, (700), 7 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:35:59,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:35:59,204 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:35:59,212 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-04 00:35:59,412 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,SelfDestructingSolverStorable19 [2023-08-04 00:35:59,412 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:35:59,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:35:59,412 INFO L85 PathProgramCache]: Analyzing trace with hash 316223055, now seen corresponding path program 1 times [2023-08-04 00:35:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:35:59,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581871631] [2023-08-04 00:35:59,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:35:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:59,760 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 00:35:59,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:35:59,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581871631] [2023-08-04 00:35:59,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [581871631] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:35:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1526848205] [2023-08-04 00:35:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:35:59,761 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:35:59,761 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:35:59,762 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:35:59,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-04 00:35:59,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:35:59,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-04 00:35:59,871 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:35:59,962 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 00:35:59,962 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:36:00,087 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 00:36:00,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1526848205] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-04 00:36:00,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-04 00:36:00,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [3, 6] total 15 [2023-08-04 00:36:00,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336741230] [2023-08-04 00:36:00,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:36:00,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-04 00:36:00,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:36:00,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-04 00:36:00,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2023-08-04 00:36:00,114 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 102 out of 208 [2023-08-04 00:36:00,115 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 293 transitions, 3344 flow. Second operand has 7 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 00:36:00,115 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:36:00,115 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 102 of 208 [2023-08-04 00:36:00,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:36:10,869 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][232], [P2Thread1of2ForFork2InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 63#L729true, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 119#P1EXITtrue, Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 448#true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 117#L783-6true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 97#$Ultimate##0true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, 827#(not (= 3 ~__unbuffered_cnt~0)), P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:10,869 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([577] $Ultimate##0-->L756: Formula: (and (= v_~x~0_41 v_~__unbuffered_p2_EAX~0_28) (= |v_P2Thread2of2ForFork2_#in~arg.offset_8| v_P2Thread2of2ForFork2_~arg.offset_8) (= v_P2Thread2of2ForFork2_~arg.base_8 |v_P2Thread2of2ForFork2_#in~arg.base_8|)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_8, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_28, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_8} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][239], [P2Thread1of2ForFork2InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), 18#L756true, P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 63#L729true, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 817#(<= ~__unbuffered_cnt~0 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 448#true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 827#(not (= 3 ~__unbuffered_cnt~0)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 117#L783-6true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:10,869 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,869 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][232], [P2Thread1of2ForFork2InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 119#P1EXITtrue, Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 448#true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 117#L783-6true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 97#$Ultimate##0true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 827#(not (= 3 ~__unbuffered_cnt~0)), 27#L744true, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:10,870 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([577] $Ultimate##0-->L756: Formula: (and (= v_~x~0_41 v_~__unbuffered_p2_EAX~0_28) (= |v_P2Thread2of2ForFork2_#in~arg.offset_8| v_P2Thread2of2ForFork2_~arg.offset_8) (= v_P2Thread2of2ForFork2_~arg.base_8 |v_P2Thread2of2ForFork2_#in~arg.base_8|)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_8, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_28, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_8} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][239], [P2Thread1of2ForFork2InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P2Thread2of2ForFork2InUse, 18#L756true, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 817#(<= ~__unbuffered_cnt~0 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 448#true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 827#(not (= 3 ~__unbuffered_cnt~0)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 117#L783-6true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 27#L744true, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:10,870 INFO L294 olderBase$Statistics]: this new event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:10,870 INFO L297 olderBase$Statistics]: existing Event has 37 ancestors and is cut-off event [2023-08-04 00:36:12,193 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][317], [P2Thread1of2ForFork2InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 119#P1EXITtrue, Black: 448#true, Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 827#(not (= 3 ~__unbuffered_cnt~0)), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 117#L783-6true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 97#$Ultimate##0true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 719#true, 115#P1EXITtrue, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:12,193 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,193 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,193 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,193 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,194 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([577] $Ultimate##0-->L756: Formula: (and (= v_~x~0_41 v_~__unbuffered_p2_EAX~0_28) (= |v_P2Thread2of2ForFork2_#in~arg.offset_8| v_P2Thread2of2ForFork2_~arg.offset_8) (= v_P2Thread2of2ForFork2_~arg.base_8 |v_P2Thread2of2ForFork2_#in~arg.base_8|)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_8, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_28, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_8} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][239], [P2Thread1of2ForFork2InUse, 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), P2Thread2of2ForFork2InUse, 18#L756true, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 448#true, Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 117#L783-6true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, 827#(not (= 3 ~__unbuffered_cnt~0)), 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:12,194 INFO L294 olderBase$Statistics]: this new event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,194 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,194 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-04 00:36:12,194 INFO L297 olderBase$Statistics]: existing Event has 38 ancestors and is cut-off event [2023-08-04 00:36:13,898 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][232], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 63#L729true, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 97#$Ultimate##0true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, 827#(not (= 3 ~__unbuffered_cnt~0)), P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 89#L783-11true, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:13,899 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([577] $Ultimate##0-->L756: Formula: (and (= v_~x~0_41 v_~__unbuffered_p2_EAX~0_28) (= |v_P2Thread2of2ForFork2_#in~arg.offset_8| v_P2Thread2of2ForFork2_~arg.offset_8) (= v_P2Thread2of2ForFork2_~arg.base_8 |v_P2Thread2of2ForFork2_#in~arg.base_8|)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_8, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_28, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_8} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][239], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, 18#L756true, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 63#L729true, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 817#(<= ~__unbuffered_cnt~0 1), Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 827#(not (= 3 ~__unbuffered_cnt~0)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 89#L783-11true, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:13,899 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,899 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][232], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 97#$Ultimate##0true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 827#(not (= 3 ~__unbuffered_cnt~0)), 27#L744true, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 89#L783-11true, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:13,900 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([577] $Ultimate##0-->L756: Formula: (and (= v_~x~0_41 v_~__unbuffered_p2_EAX~0_28) (= |v_P2Thread2of2ForFork2_#in~arg.offset_8| v_P2Thread2of2ForFork2_~arg.offset_8) (= v_P2Thread2of2ForFork2_~arg.base_8 |v_P2Thread2of2ForFork2_#in~arg.base_8|)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_8, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_28, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_8} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][239], [P2Thread1of2ForFork2InUse, 18#L756true, P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 817#(<= ~__unbuffered_cnt~0 1), Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 827#(not (= 3 ~__unbuffered_cnt~0)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 27#L744true, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 89#L783-11true, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:13,900 INFO L294 olderBase$Statistics]: this new event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:13,900 INFO L297 olderBase$Statistics]: existing Event has 39 ancestors and is cut-off event [2023-08-04 00:36:14,498 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([596] L744-->P1EXIT: Formula: (and (= |v_P1Thread1of2ForFork1_#res.base_13| 0) (= v_~__unbuffered_cnt~0_103 (+ v_~__unbuffered_cnt~0_104 1)) (= |v_P1Thread1of2ForFork1_#res.offset_13| 0)) InVars {~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_104} OutVars{P1Thread1of2ForFork1_#res.offset=|v_P1Thread1of2ForFork1_#res.offset_13|, ~__unbuffered_cnt~0=v_~__unbuffered_cnt~0_103, P1Thread1of2ForFork1_#res.base=|v_P1Thread1of2ForFork1_#res.base_13|} AuxVars[] AssignedVars[P1Thread1of2ForFork1_#res.offset, ~__unbuffered_cnt~0, P1Thread1of2ForFork1_#res.base][317], [P2Thread1of2ForFork2InUse, P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), 119#P1EXITtrue, Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 827#(not (= 3 ~__unbuffered_cnt~0)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), 97#$Ultimate##0true, Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, 719#true, 12#P0EXITtrue, P1Thread1of2ForFork1InUse, 89#L783-11true, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:14,499 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([577] $Ultimate##0-->L756: Formula: (and (= v_~x~0_41 v_~__unbuffered_p2_EAX~0_28) (= |v_P2Thread2of2ForFork2_#in~arg.offset_8| v_P2Thread2of2ForFork2_~arg.offset_8) (= v_P2Thread2of2ForFork2_~arg.base_8 |v_P2Thread2of2ForFork2_#in~arg.base_8|)) InVars {P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41} OutVars{P2Thread2of2ForFork2_#in~arg.base=|v_P2Thread2of2ForFork2_#in~arg.base_8|, P2Thread2of2ForFork2_~arg.base=v_P2Thread2of2ForFork2_~arg.base_8, ~__unbuffered_p2_EAX~0=v_~__unbuffered_p2_EAX~0_28, P2Thread2of2ForFork2_#in~arg.offset=|v_P2Thread2of2ForFork2_#in~arg.offset_8|, ~x~0=v_~x~0_41, P2Thread2of2ForFork2_~arg.offset=v_P2Thread2of2ForFork2_~arg.offset_8} AuxVars[] AssignedVars[P2Thread2of2ForFork2_~arg.base, ~__unbuffered_p2_EAX~0, P2Thread2of2ForFork2_~arg.offset][239], [P2Thread1of2ForFork2InUse, 18#L756true, P2Thread2of2ForFork2InUse, 1063#(not (= 2 ~y~0)), P0Thread1of2ForFork0InUse, P0Thread2of2ForFork0InUse, 56#L759true, Black: 139#(= 0 |ULTIMATE.start_main_~asdf~0#1|), Black: 629#(<= ~__unbuffered_cnt~0 0), Black: 451#(<= |ULTIMATE.start_main_~asdf~2#1| 1), Black: 210#(<= |ULTIMATE.start_main_~asdf~2#1| 0), Black: 602#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), 614#true, Black: 608#(= ~__unbuffered_p2_EAX~0 0), Black: 923#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (<= ~__unbuffered_cnt~0 1)), Black: 609#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 817#(<= ~__unbuffered_cnt~0 1), Black: 919#(and (<= ~__unbuffered_cnt~0 0) (= ~y~0 0)), 606#true, Black: 929#(and (= ~y~0 0) (not (= 3 ~__unbuffered_cnt~0))), Black: 925#(and (or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))) (not (= 3 ~__unbuffered_cnt~0))), Black: 927#(and (<= ~__unbuffered_cnt~0 1) (= ~y~0 0)), 100#L729true, 43#L744true, Black: 164#(<= |ULTIMATE.start_main_~asdf~1#1| 0), Black: 617#(or (not (= 2 ~y~0)) (not (= 2 ~x~0)) (not (= ~__unbuffered_p0_EAX~0 0)) (not (= 2 ~__unbuffered_p2_EAX~0))), Black: 616#(= ~x~0 0), 115#P1EXITtrue, 827#(not (= 3 ~__unbuffered_cnt~0)), 12#P0EXITtrue, P1Thread1of2ForFork1InUse, Black: 323#(<= |ULTIMATE.start_main_~asdf~1#1| 1), 89#L783-11true, Black: 219#(<= |ULTIMATE.start_main_~asdf~0#1| 1), P1Thread2of2ForFork1InUse]) [2023-08-04 00:36:14,499 INFO L294 olderBase$Statistics]: this new event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-04 00:36:14,499 INFO L297 olderBase$Statistics]: existing Event has 40 ancestors and is cut-off event [2023-08-04 00:36:17,948 INFO L124 PetriNetUnfolderBase]: 135265/177041 cut-off events. [2023-08-04 00:36:17,948 INFO L125 PetriNetUnfolderBase]: For 1176770/1180082 co-relation queries the response was YES. [2023-08-04 00:36:18,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 985436 conditions, 177041 events. 135265/177041 cut-off events. For 1176770/1180082 co-relation queries the response was YES. Maximal size of possible extension queue 6212. Compared 1117128 event pairs, 12925 based on Foata normal form. 1511/173878 useless extension candidates. Maximal degree in co-relation 985306. Up to 79787 conditions per place. [2023-08-04 00:36:19,531 INFO L140 encePairwiseOnDemand]: 195/208 looper letters, 361 selfloop transitions, 116 changer transitions 10/546 dead transitions. [2023-08-04 00:36:19,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 546 transitions, 6801 flow [2023-08-04 00:36:19,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-04 00:36:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-04 00:36:19,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 820 transitions. [2023-08-04 00:36:19,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631868131868132 [2023-08-04 00:36:19,533 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 820 transitions. [2023-08-04 00:36:19,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 820 transitions. [2023-08-04 00:36:19,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:36:19,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 820 transitions. [2023-08-04 00:36:19,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 117.14285714285714) internal successors, (820), 7 states have internal predecessors, (820), 0 states have call successors, (0), 0 states 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 00:36:19,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 00:36:19,538 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 208.0) internal successors, (1664), 8 states have internal predecessors, (1664), 0 states have call successors, (0), 0 states 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 00:36:19,538 INFO L175 Difference]: Start difference. First operand has 97 places, 293 transitions, 3344 flow. Second operand 7 states and 820 transitions. [2023-08-04 00:36:19,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 546 transitions, 6801 flow [2023-08-04 00:39:05,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 546 transitions, 6674 flow, removed 50 selfloop flow, removed 1 redundant places. [2023-08-04 00:39:05,609 INFO L231 Difference]: Finished difference. Result has 105 places, 402 transitions, 4857 flow [2023-08-04 00:39:05,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4857, PETRI_PLACES=105, PETRI_TRANSITIONS=402} [2023-08-04 00:39:05,609 INFO L281 CegarLoopForPetriNet]: 51 programPoint places, 54 predicate places. [2023-08-04 00:39:05,610 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 402 transitions, 4857 flow [2023-08-04 00:39:05,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 105.42857142857143) internal successors, (738), 7 states have internal predecessors, (738), 0 states have call successors, (0), 0 states 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 00:39:05,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:39:05,610 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:39:05,622 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-04 00:39:05,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:39:05,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 00:39:05,815 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:39:05,815 INFO L85 PathProgramCache]: Analyzing trace with hash -2117437357, now seen corresponding path program 2 times [2023-08-04 00:39:05,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:39:05,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981468062] [2023-08-04 00:39:05,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:39:05,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:39:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:39:05,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-04 00:39:05,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:39:05,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981468062] [2023-08-04 00:39:05,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981468062] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:39:05,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:39:05,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 00:39:05,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084920014] [2023-08-04 00:39:05,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:39:05,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:39:05,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:39:05,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:39:05,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:39:05,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 208 [2023-08-04 00:39:05,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 402 transitions, 4857 flow. Second operand has 5 states, 5 states have (on average 103.2) internal successors, (516), 5 states have internal predecessors, (516), 0 states have call successors, (0), 0 states 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 00:39:05,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:39:05,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 208 [2023-08-04 00:39:05,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:39:44,431 INFO L124 PetriNetUnfolderBase]: 272677/351094 cut-off events. [2023-08-04 00:39:44,432 INFO L125 PetriNetUnfolderBase]: For 2540977/2540977 co-relation queries the response was YES. [2023-08-04 00:39:46,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1998590 conditions, 351094 events. 272677/351094 cut-off events. For 2540977/2540977 co-relation queries the response was YES. Maximal size of possible extension queue 12322. Compared 2262061 event pairs, 14715 based on Foata normal form. 1297/352291 useless extension candidates. Maximal degree in co-relation 1879078. Up to 98253 conditions per place. [2023-08-04 00:39:47,825 INFO L140 encePairwiseOnDemand]: 194/208 looper letters, 698 selfloop transitions, 305 changer transitions 46/1052 dead transitions. [2023-08-04 00:39:47,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 1052 transitions, 14306 flow [2023-08-04 00:39:47,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-04 00:39:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-04 00:39:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 739 transitions. [2023-08-04 00:39:47,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5921474358974359 [2023-08-04 00:39:47,827 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 739 transitions. [2023-08-04 00:39:47,827 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 739 transitions. [2023-08-04 00:39:47,827 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:39:47,827 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 739 transitions. [2023-08-04 00:39:47,828 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 123.16666666666667) internal successors, (739), 6 states have internal predecessors, (739), 0 states have call successors, (0), 0 states 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 00:39:47,830 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 00:39:47,830 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 208.0) internal successors, (1456), 7 states have internal predecessors, (1456), 0 states have call successors, (0), 0 states 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 00:39:47,830 INFO L175 Difference]: Start difference. First operand has 105 places, 402 transitions, 4857 flow. Second operand 6 states and 739 transitions. [2023-08-04 00:39:47,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 1052 transitions, 14306 flow Received shutdown request... [2023-08-04 00:48:12,239 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 00:48:13,251 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown