/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_safe012_power.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:14:45,623 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:14:45,667 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:14:45,671 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:14:45,671 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:14:45,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:14:45,672 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:14:45,689 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:14:45,689 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:14:45,690 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:14:45,690 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:14:45,690 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:14:45,691 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:14:45,691 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:14:45,691 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:14:45,692 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:14:45,692 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:14:45,692 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:14:45,693 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:14:45,693 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:14:45,693 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:14:45,694 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:14:45,694 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:14:45,694 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:14:45,695 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:14:45,695 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:14:45,695 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:14:45,696 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:14:45,696 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:14:45,696 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:14:45,697 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:14:45,697 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:14:45,697 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:14:45,697 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:14:45,698 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:14:45,698 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:14:45,698 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:14:45,699 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:14:45,699 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:14:45,699 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:14:45,700 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:14:45,700 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:14:45,874 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:14:45,897 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:14:45,899 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:14:45,900 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:14:45,901 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:14:45,901 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe012_power.opt_bound2.i [2023-08-03 18:14:47,089 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:14:47,312 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:14:47,312 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe012_power.opt_bound2.i [2023-08-03 18:14:47,325 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea709680c/53f9ca7b7af14470818330c12bb9b706/FLAG30c96f023 [2023-08-03 18:14:47,339 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea709680c/53f9ca7b7af14470818330c12bb9b706 [2023-08-03 18:14:47,341 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:14:47,342 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:14:47,343 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:14:47,343 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:14:47,346 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:14:47,346 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,347 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214211c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47, skipping insertion in model container [2023-08-03 18:14:47,347 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,381 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:14:47,537 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_safe012_power.opt_bound2.i[951,964] [2023-08-03 18:14:47,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:14:47,766 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:14:47,779 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_safe012_power.opt_bound2.i[951,964] [2023-08-03 18:14:47,799 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:14:47,801 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:14:47,833 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:14:47,861 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:14:47,861 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:14:47,867 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:14:47,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47 WrapperNode [2023-08-03 18:14:47,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:14:47,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:14:47,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:14:47,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:14:47,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,889 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,914 INFO L138 Inliner]: procedures = 176, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 206 [2023-08-03 18:14:47,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:14:47,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:14:47,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:14:47,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:14:47,929 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,930 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,949 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,953 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,955 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,959 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:14:47,960 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:14:47,960 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:14:47,960 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:14:47,961 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (1/1) ... [2023-08-03 18:14:47,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:14:47,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:14:47,993 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 18:14:47,998 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 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:14:48,026 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:14:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:14:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:14:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:14:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:14:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:14:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:14:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:14:48,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:14:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:14:48,029 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 18:14:48,150 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:14:48,152 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:14:48,538 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:14:48,776 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:14:48,776 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:14:48,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:14:48 BoogieIcfgContainer [2023-08-03 18:14:48,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:14:48,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:14:48,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:14:48,784 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:14:48,784 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:14:47" (1/3) ... [2023-08-03 18:14:48,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860517e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:14:48, skipping insertion in model container [2023-08-03 18:14:48,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:14:47" (2/3) ... [2023-08-03 18:14:48,785 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5860517e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:14:48, skipping insertion in model container [2023-08-03 18:14:48,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:14:48" (3/3) ... [2023-08-03 18:14:48,787 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe012_power.opt_bound2.i [2023-08-03 18:14:48,795 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:14:48,804 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:14:48,804 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:14:48,804 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:14:48,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:14:48,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-03 18:14:49,040 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-03 18:14:49,040 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:14:49,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1972 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-03 18:14:49,048 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 148 transitions, 311 flow [2023-08-03 18:14:49,053 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 148 transitions, 311 flow [2023-08-03 18:14:49,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:14:49,064 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 148 transitions, 311 flow [2023-08-03 18:14:49,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 148 transitions, 311 flow [2023-08-03 18:14:49,066 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-03 18:14:49,131 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-03 18:14:49,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:14:49,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 493 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1972 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 289. Up to 16 conditions per place. [2023-08-03 18:14:49,137 INFO L119 LiptonReduction]: Number of co-enabled transitions 2530 [2023-08-03 18:14:55,353 INFO L134 LiptonReduction]: Checked pairs total: 7138 [2023-08-03 18:14:55,354 INFO L136 LiptonReduction]: Total number of compositions: 129 [2023-08-03 18:14:55,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:14:55,370 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;@6f2a6894, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:14:55,371 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:14:55,376 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:14:55,376 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-03 18:14:55,376 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:14:55,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:14:55,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:14:55,377 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 18:14:55,381 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:14:55,381 INFO L85 PathProgramCache]: Analyzing trace with hash 202405630, now seen corresponding path program 1 times [2023-08-03 18:14:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:14:55,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592553848] [2023-08-03 18:14:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:14:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:14:55,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:14:55,687 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 18:14:55,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:14:55,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592553848] [2023-08-03 18:14:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592553848] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:14:55,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:14:55,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:14:55,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133708040] [2023-08-03 18:14:55,691 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:14:55,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:14:55,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:14:55,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:14:55,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:14:55,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 277 [2023-08-03 18:14:55,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states 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 18:14:55,753 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:14:55,753 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 277 [2023-08-03 18:14:55,754 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:14:56,330 INFO L124 PetriNetUnfolderBase]: 1854/2921 cut-off events. [2023-08-03 18:14:56,330 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-03 18:14:56,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5842 conditions, 2921 events. 1854/2921 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 15571 event pairs, 1523 based on Foata normal form. 105/2501 useless extension candidates. Maximal degree in co-relation 5825. Up to 2845 conditions per place. [2023-08-03 18:14:56,350 INFO L140 encePairwiseOnDemand]: 273/277 looper letters, 29 selfloop transitions, 2 changer transitions 0/36 dead transitions. [2023-08-03 18:14:56,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 36 transitions, 149 flow [2023-08-03 18:14:56,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:14:56,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:14:56,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-03 18:14:56,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5018050541516246 [2023-08-03 18:14:56,372 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-03 18:14:56,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-03 18:14:56,375 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:14:56,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-03 18:14:56,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 0 states have call successors, (0), 0 states 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 18:14:56,387 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 18:14:56,387 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 0 states have call successors, (0), 0 states 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 18:14:56,389 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 83 flow. Second operand 3 states and 417 transitions. [2023-08-03 18:14:56,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 36 transitions, 149 flow [2023-08-03 18:14:56,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 36 transitions, 149 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:14:56,394 INFO L231 Difference]: Finished difference. Result has 43 places, 33 transitions, 89 flow [2023-08-03 18:14:56,395 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=43, PETRI_TRANSITIONS=33} [2023-08-03 18:14:56,399 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2023-08-03 18:14:56,399 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 33 transitions, 89 flow [2023-08-03 18:14:56,400 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 0 states have call successors, (0), 0 states 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 18:14:56,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:14:56,400 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:14:56,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:14:56,401 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 18:14:56,409 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:14:56,409 INFO L85 PathProgramCache]: Analyzing trace with hash 193133295, now seen corresponding path program 1 times [2023-08-03 18:14:56,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:14:56,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980167361] [2023-08-03 18:14:56,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:14:56,410 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:14:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:14:56,442 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:14:56,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:14:56,472 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:14:56,472 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:14:56,474 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:14:56,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:14:56,475 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:14:56,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:14:56,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:14:56,476 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:14:56,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:14:56,476 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:14:56,479 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:14:56,479 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:14:56,530 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:14:56,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 380 flow [2023-08-03 18:14:56,713 INFO L124 PetriNetUnfolderBase]: 93/1399 cut-off events. [2023-08-03 18:14:56,713 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:14:56,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 1399 events. 93/1399 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9478 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 1022. Up to 54 conditions per place. [2023-08-03 18:14:56,718 INFO L82 GeneralOperation]: Start removeDead. Operand has 180 places, 172 transitions, 380 flow [2023-08-03 18:14:56,721 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 172 transitions, 380 flow [2023-08-03 18:14:56,722 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:14:56,722 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 172 transitions, 380 flow [2023-08-03 18:14:56,722 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 172 transitions, 380 flow [2023-08-03 18:14:56,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 380 flow [2023-08-03 18:14:56,877 INFO L124 PetriNetUnfolderBase]: 93/1399 cut-off events. [2023-08-03 18:14:56,878 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:14:56,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1497 conditions, 1399 events. 93/1399 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9478 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 1022. Up to 54 conditions per place. [2023-08-03 18:14:56,908 INFO L119 LiptonReduction]: Number of co-enabled transitions 6064 [2023-08-03 18:15:04,509 INFO L134 LiptonReduction]: Checked pairs total: 21563 [2023-08-03 18:15:04,509 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-03 18:15:04,511 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:15:04,512 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;@6f2a6894, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:15:04,512 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:15:04,517 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:15:04,517 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-03 18:15:04,517 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:15:04,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:15:04,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:15:04,518 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 18:15:04,518 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:15:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1348847689, now seen corresponding path program 1 times [2023-08-03 18:15:04,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:15:04,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361613971] [2023-08-03 18:15:04,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:15:04,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:15:04,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:15:04,585 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 18:15:04,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:15:04,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361613971] [2023-08-03 18:15:04,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361613971] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:15:04,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:15:04,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:15:04,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544087307] [2023-08-03 18:15:04,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:15:04,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:15:04,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:15:04,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:15:04,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:15:04,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 144 out of 305 [2023-08-03 18:15:04,603 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 18:15:04,603 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:15:04,603 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 144 of 305 [2023-08-03 18:15:04,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:16:09,946 INFO L124 PetriNetUnfolderBase]: 381210/489874 cut-off events. [2023-08-03 18:16:09,946 INFO L125 PetriNetUnfolderBase]: For 7212/7212 co-relation queries the response was YES. [2023-08-03 18:16:11,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978211 conditions, 489874 events. 381210/489874 cut-off events. For 7212/7212 co-relation queries the response was YES. Maximal size of possible extension queue 12802. Compared 3250869 event pairs, 315492 based on Foata normal form. 10836/432280 useless extension candidates. Maximal degree in co-relation 282252. Up to 479788 conditions per place. [2023-08-03 18:16:12,840 INFO L140 encePairwiseOnDemand]: 301/305 looper letters, 43 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-03 18:16:12,840 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 55 transitions, 236 flow [2023-08-03 18:16:12,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:16:12,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:16:12,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-03 18:16:12,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5234972677595628 [2023-08-03 18:16:12,844 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-03 18:16:12,844 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-03 18:16:12,844 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:16:12,844 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-03 18:16:12,847 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 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) [2023-08-03 18:16:12,849 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 18:16:12,850 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 305.0) internal successors, (1220), 4 states have internal predecessors, (1220), 0 states have call successors, (0), 0 states 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 18:16:12,850 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 140 flow. Second operand 3 states and 479 transitions. [2023-08-03 18:16:12,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 55 transitions, 236 flow [2023-08-03 18:16:12,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 230 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:16:12,864 INFO L231 Difference]: Finished difference. Result has 67 places, 52 transitions, 144 flow [2023-08-03 18:16:12,864 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=67, PETRI_TRANSITIONS=52} [2023-08-03 18:16:12,865 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-03 18:16:12,865 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 52 transitions, 144 flow [2023-08-03 18:16:12,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 18:16:12,866 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:16:12,866 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:16:12,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:16:12,866 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 18:16:12,867 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:16:12,867 INFO L85 PathProgramCache]: Analyzing trace with hash 1234190624, now seen corresponding path program 1 times [2023-08-03 18:16:12,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:16:12,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234723889] [2023-08-03 18:16:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:16:12,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:16:12,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:16:12,954 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 18:16:12,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:16:12,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234723889] [2023-08-03 18:16:12,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234723889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:16:12,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293391678] [2023-08-03 18:16:12,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:16:12,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:16:12,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:16:12,969 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 18:16:12,974 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 18:16:13,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:16:13,113 INFO L262 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:16:13,115 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:16:13,155 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 18:16:13,155 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:16:13,171 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:16:13,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [293391678] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:16:13,172 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:16:13,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:16:13,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911765875] [2023-08-03 18:16:13,173 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:16:13,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:16:13,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:16:13,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:16:13,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:16:13,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 305 [2023-08-03 18:16:13,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 52 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 18:16:13,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:16:13,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 305 [2023-08-03 18:16:13,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:17:00,492 INFO L124 PetriNetUnfolderBase]: 298234/379718 cut-off events. [2023-08-03 18:17:00,492 INFO L125 PetriNetUnfolderBase]: For 5001/5001 co-relation queries the response was YES. [2023-08-03 18:17:01,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 757941 conditions, 379718 events. 298234/379718 cut-off events. For 5001/5001 co-relation queries the response was YES. Maximal size of possible extension queue 10336. Compared 2402594 event pairs, 199662 based on Foata normal form. 3/328430 useless extension candidates. Maximal degree in co-relation 269067. Up to 372130 conditions per place. [2023-08-03 18:17:02,937 INFO L140 encePairwiseOnDemand]: 301/305 looper letters, 46 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-08-03 18:17:02,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 260 flow [2023-08-03 18:17:02,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:17:02,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:17:02,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 623 transitions. [2023-08-03 18:17:02,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510655737704918 [2023-08-03 18:17:02,940 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 623 transitions. [2023-08-03 18:17:02,940 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 623 transitions. [2023-08-03 18:17:02,940 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:17:02,940 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 623 transitions. [2023-08-03 18:17:02,942 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.75) internal successors, (623), 4 states have internal predecessors, (623), 0 states have call successors, (0), 0 states 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 18:17:02,944 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 18:17:02,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 305.0) internal successors, (1525), 5 states have internal predecessors, (1525), 0 states have call successors, (0), 0 states 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 18:17:02,945 INFO L175 Difference]: Start difference. First operand has 67 places, 52 transitions, 144 flow. Second operand 4 states and 623 transitions. [2023-08-03 18:17:02,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 260 flow [2023-08-03 18:17:02,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 60 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:17:02,947 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 162 flow [2023-08-03 18:17:02,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-03 18:17:02,948 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 7 predicate places. [2023-08-03 18:17:02,948 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 162 flow [2023-08-03 18:17:02,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 0 states have call successors, (0), 0 states 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 18:17:02,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:17:02,949 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:17:02,957 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 18:17:03,155 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 18:17:03,155 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:17:03,155 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:17:03,155 INFO L85 PathProgramCache]: Analyzing trace with hash -602533568, now seen corresponding path program 1 times [2023-08-03 18:17:03,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:17:03,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694300652] [2023-08-03 18:17:03,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:17:03,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:17:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:17:03,239 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 18:17:03,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:17:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694300652] [2023-08-03 18:17:03,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1694300652] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:17:03,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956903486] [2023-08-03 18:17:03,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:17:03,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:17:03,240 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:17:03,242 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 18:17:03,245 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 18:17:03,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:17:03,376 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:17:03,377 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:17:03,403 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 18:17:03,403 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:17:03,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [956903486] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:17:03,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:17:03,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:17:03,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143021905] [2023-08-03 18:17:03,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:17:03,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:17:03,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:17:03,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:17:03,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:17:03,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 305 [2023-08-03 18:17:03,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states 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 18:17:03,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:17:03,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 305 [2023-08-03 18:17:03,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand