/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe004_power.opt_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:59:20,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:59:20,592 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:59:20,595 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:59:20,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:59:20,595 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:59:20,596 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:59:20,612 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:59:20,613 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:59:20,613 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:59:20,614 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:59:20,614 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:59:20,614 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:59:20,614 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:59:20,615 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:59:20,615 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:59:20,615 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:59:20,615 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:59:20,616 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:59:20,616 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:59:20,616 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:59:20,618 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:59:20,619 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:59:20,619 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:59:20,622 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:59:20,622 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:59:20,622 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:59:20,624 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:59:20,624 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:59:20,624 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:59:20,625 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:59:20,625 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:59:20,625 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:59:20,625 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:59:20,626 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:59:20,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:59:20,802 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:59:20,817 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:59:20,819 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:59:20,819 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:59:20,819 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:59:20,820 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe004_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 17:59:21,715 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:59:21,919 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:59:21,919 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe004_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 17:59:21,932 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/721db96f3/d4c45ffea2aa4a34bc822983453bde7a/FLAG957e7a00e [2023-08-03 17:59:21,947 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/721db96f3/d4c45ffea2aa4a34bc822983453bde7a [2023-08-03 17:59:21,949 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:59:21,950 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:59:21,951 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:59:21,951 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:59:21,953 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:59:21,954 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:59:21" (1/1) ... [2023-08-03 17:59:21,955 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@479f9654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:21, skipping insertion in model container [2023-08-03 17:59:21,955 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:59:21" (1/1) ... [2023-08-03 17:59:21,983 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:59:22,073 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_safe004_power.opt_pso.opt_rmo.opt_bound2.i[967,980] [2023-08-03 17:59:22,210 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:59:22,216 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:59:22,226 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_safe004_power.opt_pso.opt_rmo.opt_bound2.i[967,980] [2023-08-03 17:59:22,241 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:59:22,243 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:59:22,279 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:59:22,294 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:59:22,294 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:59:22,299 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:59:22,299 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22 WrapperNode [2023-08-03 17:59:22,300 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:59:22,300 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:59:22,300 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:59:22,300 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:59:22,304 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,315 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,334 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2023-08-03 17:59:22,334 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:59:22,334 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:59:22,335 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:59:22,335 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:59:22,342 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,342 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,344 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,345 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,352 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,354 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,354 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,357 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:59:22,357 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:59:22,357 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:59:22,357 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:59:22,358 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (1/1) ... [2023-08-03 17:59:22,371 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:59:22,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:59:22,398 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) [2023-08-03 17:59:22,432 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 [2023-08-03 17:59:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:59:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:59:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:59:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:59:22,458 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:59:22,459 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:59:22,459 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:59:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:59:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:59:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:59:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:59:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:59:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:59:22,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:59:22,460 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:59:22,461 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:59:22,584 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:59:22,586 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:59:22,854 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:59:22,941 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:59:22,941 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:59:22,943 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:59:22 BoogieIcfgContainer [2023-08-03 17:59:22,943 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:59:22,948 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:59:22,948 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:59:22,950 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:59:22,950 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:59:21" (1/3) ... [2023-08-03 17:59:22,951 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484a0c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:59:22, skipping insertion in model container [2023-08-03 17:59:22,952 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:59:22" (2/3) ... [2023-08-03 17:59:22,953 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@484a0c28 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:59:22, skipping insertion in model container [2023-08-03 17:59:22,953 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:59:22" (3/3) ... [2023-08-03 17:59:22,954 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe004_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-03 17:59:22,960 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:59:22,966 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:59:22,966 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:59:22,966 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:59:23,010 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:59:23,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:59:23,147 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-03 17:59:23,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:59:23,154 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1969 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-08-03 17:59:23,154 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:59:23,157 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 130 places, 128 transitions, 271 flow [2023-08-03 17:59:23,159 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:59:23,173 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 17:59:23,176 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 130 places, 128 transitions, 271 flow [2023-08-03 17:59:23,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 128 transitions, 271 flow [2023-08-03 17:59:23,230 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-03 17:59:23,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:59:23,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1969 event pairs, 0 based on Foata normal form. 0/394 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-08-03 17:59:23,236 INFO L119 LiptonReduction]: Number of co-enabled transitions 2698 [2023-08-03 17:59:25,863 INFO L134 LiptonReduction]: Checked pairs total: 6760 [2023-08-03 17:59:25,863 INFO L136 LiptonReduction]: Total number of compositions: 108 [2023-08-03 17:59:25,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:59:25,878 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;@57a88a78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:59:25,878 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:59:25,881 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:59:25,881 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 17:59:25,881 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:59:25,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:59:25,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:59:25,882 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:59:25,886 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:59:25,886 INFO L85 PathProgramCache]: Analyzing trace with hash 532652576, now seen corresponding path program 1 times [2023-08-03 17:59:25,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:59:25,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061496879] [2023-08-03 17:59:25,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:59:25,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:59:25,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:59:26,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:59:26,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:59:26,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061496879] [2023-08-03 17:59:26,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061496879] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:59:26,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:59:26,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:59:26,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252138966] [2023-08-03 17:59:26,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:59:26,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:59:26,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:59:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:59:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:59:26,086 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 236 [2023-08-03 17:59:26,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:26,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:59:26,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 236 [2023-08-03 17:59:26,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:59:26,438 INFO L124 PetriNetUnfolderBase]: 2161/3484 cut-off events. [2023-08-03 17:59:26,438 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 17:59:26,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6886 conditions, 3484 events. 2161/3484 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 19966 event pairs, 1312 based on Foata normal form. 120/2984 useless extension candidates. Maximal degree in co-relation 6865. Up to 3294 conditions per place. [2023-08-03 17:59:26,454 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 30 selfloop transitions, 2 changer transitions 0/38 dead transitions. [2023-08-03 17:59:26,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 155 flow [2023-08-03 17:59:26,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:59:26,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:59:26,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-03 17:59:26,463 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5056497175141242 [2023-08-03 17:59:26,463 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-03 17:59:26,464 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-03 17:59:26,464 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:59:26,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-03 17:59:26,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:26,471 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:26,472 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:26,473 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 85 flow. Second operand 3 states and 358 transitions. [2023-08-03 17:59:26,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 155 flow [2023-08-03 17:59:26,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 155 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:59:26,476 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 91 flow [2023-08-03 17:59:26,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=91, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 17:59:26,479 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-03 17:59:26,479 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 91 flow [2023-08-03 17:59:26,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:26,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:59:26,480 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:59:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:59:26,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:59:26,480 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:59:26,480 INFO L85 PathProgramCache]: Analyzing trace with hash -680182161, now seen corresponding path program 1 times [2023-08-03 17:59:26,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:59:26,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560705193] [2023-08-03 17:59:26,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:59:26,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:59:26,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:59:26,496 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:59:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:59:26,517 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:59:26,517 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:59:26,518 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:59:26,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:59:26,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:59:26,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:59:26,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:59:26,519 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:59:26,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:59:26,520 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:59:26,521 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:59:26,521 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:59:26,538 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:59:26,541 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:59:26,637 INFO L124 PetriNetUnfolderBase]: 93/1380 cut-off events. [2023-08-03 17:59:26,637 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:59:26,640 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 1380 events. 93/1380 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9515 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1003. Up to 54 conditions per place. [2023-08-03 17:59:26,640 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:59:26,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 161 places, 153 transitions, 342 flow [2023-08-03 17:59:26,643 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:59:26,643 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 17:59:26,643 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 161 places, 153 transitions, 342 flow [2023-08-03 17:59:26,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 153 transitions, 342 flow [2023-08-03 17:59:26,751 INFO L124 PetriNetUnfolderBase]: 93/1380 cut-off events. [2023-08-03 17:59:26,751 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:59:26,753 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 1380 events. 93/1380 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9515 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1003. Up to 54 conditions per place. [2023-08-03 17:59:26,768 INFO L119 LiptonReduction]: Number of co-enabled transitions 6496 [2023-08-03 17:59:29,480 INFO L134 LiptonReduction]: Checked pairs total: 18746 [2023-08-03 17:59:29,480 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-03 17:59:29,482 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:59:29,482 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;@57a88a78, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:59:29,482 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:59:29,484 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:59:29,484 INFO L124 PetriNetUnfolderBase]: 1/15 cut-off events. [2023-08-03 17:59:29,484 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:59:29,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:59:29,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:59:29,485 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:59:29,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:59:29,485 INFO L85 PathProgramCache]: Analyzing trace with hash 811358401, now seen corresponding path program 1 times [2023-08-03 17:59:29,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:59:29,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181128086] [2023-08-03 17:59:29,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:59:29,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:59:29,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:59:29,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:59:29,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:59:29,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181128086] [2023-08-03 17:59:29,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181128086] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:59:29,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:59:29,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:59:29,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23375578] [2023-08-03 17:59:29,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:59:29,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:59:29,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:59:29,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:59:29,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:59:29,545 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-03 17:59:29,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:59:29,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:59:29,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-03 17:59:29,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:00:14,358 INFO L124 PetriNetUnfolderBase]: 468866/614602 cut-off events. [2023-08-03 18:00:14,359 INFO L125 PetriNetUnfolderBase]: For 9588/9588 co-relation queries the response was YES. [2023-08-03 18:00:15,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1214260 conditions, 614602 events. 468866/614602 cut-off events. For 9588/9588 co-relation queries the response was YES. Maximal size of possible extension queue 15306. Compared 4398139 event pairs, 380024 based on Foata normal form. 13020/544257 useless extension candidates. Maximal degree in co-relation 261790. Up to 587323 conditions per place. [2023-08-03 18:00:17,578 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 44 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-03 18:00:17,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 58 transitions, 244 flow [2023-08-03 18:00:17,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:00:17,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:00:17,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 423 transitions. [2023-08-03 18:00:17,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280898876404494 [2023-08-03 18:00:17,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 423 transitions. [2023-08-03 18:00:17,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 423 transitions. [2023-08-03 18:00:17,582 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:00:17,582 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 423 transitions. [2023-08-03 18:00:17,583 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:17,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:17,585 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:17,585 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 144 flow. Second operand 3 states and 423 transitions. [2023-08-03 18:00:17,585 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 58 transitions, 244 flow [2023-08-03 18:00:17,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 58 transitions, 238 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:00:17,598 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 148 flow [2023-08-03 18:00:17,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2023-08-03 18:00:17,599 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 18:00:17,599 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 148 flow [2023-08-03 18:00:17,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:17,599 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:00:17,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:00:17,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:00:17,600 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:00:17,600 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:00:17,600 INFO L85 PathProgramCache]: Analyzing trace with hash -895361403, now seen corresponding path program 1 times [2023-08-03 18:00:17,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:00:17,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964954341] [2023-08-03 18:00:17,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:00:17,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:00:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:00:17,664 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:00:17,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:00:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964954341] [2023-08-03 18:00:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [964954341] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:00:17,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074808300] [2023-08-03 18:00:17,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:00:17,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:00:17,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:00:17,669 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) [2023-08-03 18:00:17,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:00:17,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:00:17,754 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:00:17,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:00:17,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:00:17,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:00:17,839 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:00:17,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074808300] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:00:17,840 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:00:17,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:00:17,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850606149] [2023-08-03 18:00:17,840 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:00:17,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:00:17,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:00:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:00:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:00:17,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 18:00:17,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:17,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:00:17,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 18:00:17,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:00:54,536 INFO L124 PetriNetUnfolderBase]: 389314/506034 cut-off events. [2023-08-03 18:00:54,536 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2023-08-03 18:00:55,629 INFO L83 FinitePrefix]: Finished finitePrefix Result has 998727 conditions, 506034 events. 389314/506034 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 13483. Compared 3484715 event pairs, 247180 based on Foata normal form. 4/439365 useless extension candidates. Maximal degree in co-relation 261519. Up to 484009 conditions per place. [2023-08-03 18:00:57,956 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 49 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-03 18:00:57,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 65 transitions, 276 flow [2023-08-03 18:00:57,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:00:57,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:00:57,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 550 transitions. [2023-08-03 18:00:57,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5149812734082397 [2023-08-03 18:00:57,965 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 550 transitions. [2023-08-03 18:00:57,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 550 transitions. [2023-08-03 18:00:57,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:00:57,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 550 transitions. [2023-08-03 18:00:57,968 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.5) internal successors, (550), 4 states have internal predecessors, (550), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:57,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:57,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:57,973 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 148 flow. Second operand 4 states and 550 transitions. [2023-08-03 18:00:57,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 65 transitions, 276 flow [2023-08-03 18:00:57,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 65 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:00:57,991 INFO L231 Difference]: Finished difference. Result has 73 places, 55 transitions, 166 flow [2023-08-03 18:00:57,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=166, PETRI_PLACES=73, PETRI_TRANSITIONS=55} [2023-08-03 18:00:57,993 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 7 predicate places. [2023-08-03 18:00:57,993 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 55 transitions, 166 flow [2023-08-03 18:00:57,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:57,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:00:57,993 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:00:58,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 18:00:58,194 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 [2023-08-03 18:00:58,194 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:00:58,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:00:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -1781906553, now seen corresponding path program 1 times [2023-08-03 18:00:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:00:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912239249] [2023-08-03 18:00:58,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:00:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:00:58,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:00:58,315 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:00:58,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:00:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912239249] [2023-08-03 18:00:58,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912239249] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:00:58,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [496706601] [2023-08-03 18:00:58,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:00:58,316 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:00:58,316 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:00:58,338 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) [2023-08-03 18:00:58,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:00:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:00:58,433 INFO L262 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:00:58,435 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:00:58,452 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:00:58,452 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:00:58,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [496706601] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:00:58,452 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:00:58,452 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:00:58,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587885186] [2023-08-03 18:00:58,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:00:58,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:00:58,453 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:00:58,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:00:58,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:00:58,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-03 18:00:58,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 55 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:00:58,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:00:58,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-03 18:00:58,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand