/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix040.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:40:49,487 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:40:49,562 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:40:49,568 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:40:49,568 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:40:49,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:40:49,569 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:40:49,596 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:40:49,596 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:40:49,600 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:40:49,600 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:40:49,600 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:40:49,601 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:40:49,602 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:40:49,603 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:40:49,603 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:40:49,603 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:40:49,603 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:40:49,603 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:40:49,603 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:40:49,604 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:40:49,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:40:49,604 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:40:49,604 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:40:49,605 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:40:49,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:40:49,606 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:40:49,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:40:49,607 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:40:49,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:40:49,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:40:49,608 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:40:49,608 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:40:49,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:40:49,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:40:49,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:40:49,608 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:40:49,609 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:40:49,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:40:49,609 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:40:49,609 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:40:49,609 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:40:49,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:40:49,835 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:40:49,837 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:40:49,838 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:40:49,838 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:40:49,839 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix040.opt_bound2.i [2023-08-03 23:40:50,919 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:40:51,222 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:40:51,223 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix040.opt_bound2.i [2023-08-03 23:40:51,243 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3bf0642/4375280fd2fc4953934824b2fd0d3b43/FLAGc5da6b185 [2023-08-03 23:40:51,258 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b3bf0642/4375280fd2fc4953934824b2fd0d3b43 [2023-08-03 23:40:51,263 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:40:51,265 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:40:51,267 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:40:51,267 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:40:51,270 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:40:51,271 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,271 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@225c75e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51, skipping insertion in model container [2023-08-03 23:40:51,272 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,320 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:40:51,489 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_mix040.opt_bound2.i[944,957] [2023-08-03 23:40:51,669 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:40:51,676 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:40:51,686 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_mix040.opt_bound2.i[944,957] [2023-08-03 23:40:51,693 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:40:51,695 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:40:51,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:40:51,787 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:40:51,787 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:40:51,793 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:40:51,793 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51 WrapperNode [2023-08-03 23:40:51,793 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:40:51,794 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:40:51,795 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:40:51,795 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:40:51,800 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,828 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,867 INFO L138 Inliner]: procedures = 177, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 183 [2023-08-03 23:40:51,868 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:40:51,868 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:40:51,868 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:40:51,868 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:40:51,876 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,876 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,890 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,890 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,900 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,903 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,904 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,922 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,924 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:40:51,925 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:40:51,925 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:40:51,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:40:51,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (1/1) ... [2023-08-03 23:40:51,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:40:51,942 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:40:51,958 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 23:40:51,963 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 23:40:51,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:40:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:40:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:40:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:40:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:40:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:40:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:40:51,986 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:40:51,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:40:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:40:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:40:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 23:40:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 23:40:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:40:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:40:51,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:40:51,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:40:51,989 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 23:40:52,122 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:40:52,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:40:52,365 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:40:52,490 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:40:52,490 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 23:40:52,492 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:40:52 BoogieIcfgContainer [2023-08-03 23:40:52,492 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:40:52,495 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:40:52,495 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:40:52,498 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:40:52,499 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:40:51" (1/3) ... [2023-08-03 23:40:52,499 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468b2209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:40:52, skipping insertion in model container [2023-08-03 23:40:52,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:40:51" (2/3) ... [2023-08-03 23:40:52,500 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@468b2209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:40:52, skipping insertion in model container [2023-08-03 23:40:52,500 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:40:52" (3/3) ... [2023-08-03 23:40:52,501 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix040.opt_bound2.i [2023-08-03 23:40:52,508 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:40:52,515 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:40:52,515 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:40:52,516 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:40:52,570 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:40:52,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 334 flow [2023-08-03 23:40:52,815 INFO L124 PetriNetUnfolderBase]: 62/941 cut-off events. [2023-08-03 23:40:52,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:40:52,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 941 events. 62/941 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 5880 event pairs, 0 based on Foata normal form. 0/825 useless extension candidates. Maximal degree in co-relation 546. Up to 32 conditions per place. [2023-08-03 23:40:52,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 160 places, 157 transitions, 334 flow [2023-08-03 23:40:52,831 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 126 transitions, 272 flow [2023-08-03 23:40:52,834 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:40:52,848 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-03 23:40:52,851 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 126 transitions, 272 flow [2023-08-03 23:40:52,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 126 transitions, 272 flow [2023-08-03 23:40:52,896 INFO L124 PetriNetUnfolderBase]: 14/445 cut-off events. [2023-08-03 23:40:52,896 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:40:52,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 495 conditions, 445 events. 14/445 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2076 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 298. Up to 16 conditions per place. [2023-08-03 23:40:52,904 INFO L119 LiptonReduction]: Number of co-enabled transitions 2216 [2023-08-03 23:40:56,370 INFO L134 LiptonReduction]: Checked pairs total: 4808 [2023-08-03 23:40:56,371 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-08-03 23:40:56,382 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:40:56,387 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;@27cc966b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:40:56,387 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:40:56,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:40:56,391 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:40:56,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:40:56,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:40:56,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:40:56,393 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:40:56,396 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:40:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash 812220209, now seen corresponding path program 1 times [2023-08-03 23:40:56,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:40:56,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959182044] [2023-08-03 23:40:56,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:40:56,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:40:56,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:40:56,519 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:40:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:40:56,555 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:40:56,557 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:40:56,557 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 23:40:56,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 23:40:56,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 23:40:56,559 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 23:40:56,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:40:56,560 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:40:56,562 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:40:56,562 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:40:56,562 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:40:56,593 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:40:56,596 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 200 places, 189 transitions, 426 flow [2023-08-03 23:40:57,213 INFO L124 PetriNetUnfolderBase]: 282/4405 cut-off events. [2023-08-03 23:40:57,213 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:40:57,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 4405 events. 282/4405 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 43256 event pairs, 0 based on Foata normal form. 0/3868 useless extension candidates. Maximal degree in co-relation 3146. Up to 162 conditions per place. [2023-08-03 23:40:57,235 INFO L82 GeneralOperation]: Start removeDead. Operand has 200 places, 189 transitions, 426 flow [2023-08-03 23:40:57,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 172 places, 158 transitions, 364 flow [2023-08-03 23:40:57,240 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:40:57,240 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 172 places, 158 transitions, 364 flow [2023-08-03 23:40:57,241 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 172 places, 158 transitions, 364 flow [2023-08-03 23:40:57,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 172 places, 158 transitions, 364 flow [2023-08-03 23:40:57,447 INFO L124 PetriNetUnfolderBase]: 39/1894 cut-off events. [2023-08-03 23:40:57,447 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 23:40:57,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2183 conditions, 1894 events. 39/1894 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 15300 event pairs, 0 based on Foata normal form. 0/1762 useless extension candidates. Maximal degree in co-relation 1472. Up to 81 conditions per place. [2023-08-03 23:40:57,486 INFO L119 LiptonReduction]: Number of co-enabled transitions 6200 [2023-08-03 23:41:00,882 INFO L134 LiptonReduction]: Checked pairs total: 19571 [2023-08-03 23:41:00,883 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-03 23:41:00,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:41:00,885 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;@27cc966b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:41:00,886 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:41:00,893 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:41:00,893 INFO L124 PetriNetUnfolderBase]: 0/91 cut-off events. [2023-08-03 23:41:00,893 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 23:41:00,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:41:00,893 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:41:00,894 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:41:00,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:41:00,894 INFO L85 PathProgramCache]: Analyzing trace with hash 177461614, now seen corresponding path program 1 times [2023-08-03 23:41:00,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:41:00,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302981112] [2023-08-03 23:41:00,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:41:00,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:41:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:41:01,037 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 23:41:01,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:41:01,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302981112] [2023-08-03 23:41:01,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302981112] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:41:01,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747152514] [2023-08-03 23:41:01,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:41:01,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:41:01,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:41:01,497 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 23:41:01,498 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 23:41:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:41:01,626 INFO L262 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:41:01,627 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:41:01,661 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 23:41:01,661 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:41:01,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1747152514] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:41:01,662 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:41:01,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:41:01,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841719152] [2023-08-03 23:41:01,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:41:01,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:41:01,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:41:01,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:41:01,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:41:01,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 160 out of 296 [2023-08-03 23:41:01,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 59 transitions, 166 flow. Second operand has 5 states, 5 states have (on average 161.6) internal successors, (808), 5 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 23:41:01,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:41:01,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 160 of 296 [2023-08-03 23:41:01,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:43:09,953 INFO L124 PetriNetUnfolderBase]: 1006481/1279817 cut-off events. [2023-08-03 23:43:09,957 INFO L125 PetriNetUnfolderBase]: For 60713/60713 co-relation queries the response was YES. [2023-08-03 23:43:14,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2583281 conditions, 1279817 events. 1006481/1279817 cut-off events. For 60713/60713 co-relation queries the response was YES. Maximal size of possible extension queue 32669. Compared 9276564 event pairs, 761501 based on Foata normal form. 0/1166492 useless extension candidates. Maximal degree in co-relation 719062. Up to 1233941 conditions per place. [2023-08-03 23:43:21,556 INFO L140 encePairwiseOnDemand]: 292/296 looper letters, 46 selfloop transitions, 5 changer transitions 0/68 dead transitions. [2023-08-03 23:43:21,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 68 transitions, 282 flow [2023-08-03 23:43:21,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:43:21,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:43:21,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 852 transitions. [2023-08-03 23:43:21,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756756756756757 [2023-08-03 23:43:21,584 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 852 transitions. [2023-08-03 23:43:21,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 852 transitions. [2023-08-03 23:43:21,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:43:21,595 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 852 transitions. [2023-08-03 23:43:21,601 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 170.4) internal successors, (852), 5 states have internal predecessors, (852), 0 states have call successors, (0), 0 states 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 23:43:21,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 23:43:21,610 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 296.0) internal successors, (1776), 6 states have internal predecessors, (1776), 0 states have call successors, (0), 0 states 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 23:43:21,611 INFO L175 Difference]: Start difference. First operand has 76 places, 59 transitions, 166 flow. Second operand 5 states and 852 transitions. [2023-08-03 23:43:21,612 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 68 transitions, 282 flow [2023-08-03 23:43:21,725 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 68 transitions, 275 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-03 23:43:21,728 INFO L231 Difference]: Finished difference. Result has 79 places, 61 transitions, 176 flow [2023-08-03 23:43:21,729 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=296, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=176, PETRI_PLACES=79, PETRI_TRANSITIONS=61} [2023-08-03 23:43:21,733 INFO L281 CegarLoopForPetriNet]: 76 programPoint places, 3 predicate places. [2023-08-03 23:43:21,733 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 61 transitions, 176 flow [2023-08-03 23:43:21,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 161.6) internal successors, (808), 5 states have internal predecessors, (808), 0 states have call successors, (0), 0 states 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 23:43:21,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:43:21,734 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:43:21,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 23:43:21,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:43:21,940 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 23:43:21,940 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:43:21,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1726817764, now seen corresponding path program 1 times [2023-08-03 23:43:21,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:43:21,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162406840] [2023-08-03 23:43:21,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:43:21,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:43:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:43:22,096 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:43:22,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:43:22,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162406840] [2023-08-03 23:43:22,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162406840] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:43:22,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:43:22,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:43:22,097 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493009252] [2023-08-03 23:43:22,097 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:43:22,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:43:22,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:43:22,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:43:22,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:43:22,109 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 296 [2023-08-03 23:43:22,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 61 transitions, 176 flow. Second operand has 3 states, 3 states have (on average 163.33333333333334) internal successors, (490), 3 states have internal predecessors, (490), 0 states have call successors, (0), 0 states 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 23:43:22,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:43:22,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 296 [2023-08-03 23:43:22,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand