/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_safe000_power.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:49:58,213 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:49:58,263 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:49:58,267 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:49:58,267 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:49:58,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:49:58,268 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:49:58,288 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:49:58,288 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:49:58,289 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:49:58,289 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:49:58,289 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:49:58,290 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:49:58,290 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:49:58,291 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:49:58,291 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:49:58,291 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:49:58,292 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:49:58,292 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:49:58,292 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:49:58,293 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:49:58,299 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:49:58,300 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:49:58,300 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:49:58,300 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:49:58,300 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:49:58,301 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:49:58,301 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:49:58,301 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:49:58,302 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:49:58,302 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:49:58,302 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:49:58,303 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:49:58,303 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:49:58,303 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:49:58,303 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:49:58,304 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:49:58,304 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:49:58,304 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:49:58,310 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:49:58,310 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:49:58,311 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:49:58,498 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:49:58,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:49:58,519 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:49:58,520 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:49:58,520 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:49:58,521 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe000_power.opt_bound2.i [2023-08-03 17:49:59,747 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:49:59,975 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:49:59,976 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe000_power.opt_bound2.i [2023-08-03 17:50:00,003 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e651cff25/ec4d07c9336547ce85930fef482a8122/FLAG61ac910a5 [2023-08-03 17:50:00,015 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e651cff25/ec4d07c9336547ce85930fef482a8122 [2023-08-03 17:50:00,018 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:50:00,019 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:50:00,020 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:50:00,020 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:50:00,024 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:50:00,025 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,025 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d40e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00, skipping insertion in model container [2023-08-03 17:50:00,026 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,076 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:50:00,270 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_safe000_power.opt_bound2.i[951,964] [2023-08-03 17:50:00,511 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:50:00,520 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:50:00,530 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_safe000_power.opt_bound2.i[951,964] [2023-08-03 17:50:00,547 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:50:00,548 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 17:50:00,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:50:00,609 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:50:00,609 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:50:00,614 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:50:00,614 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00 WrapperNode [2023-08-03 17:50:00,614 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:50:00,615 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:50:00,615 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:50:00,615 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:50:00,620 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,635 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,662 INFO L138 Inliner]: procedures = 176, calls = 73, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 205 [2023-08-03 17:50:00,662 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:50:00,663 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:50:00,663 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:50:00,663 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:50:00,670 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,670 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,675 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,675 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,686 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,689 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,692 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,693 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,697 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:50:00,698 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:50:00,698 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:50:00,698 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:50:00,699 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (1/1) ... [2023-08-03 17:50:00,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:50:00,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:50:00,738 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:50:00,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:50:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 17:50:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:50:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:50:00,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:50:00,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:50:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:50:00,787 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:50:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:50:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:50:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:50:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:50:00,788 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:50:00,788 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:50:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:50:00,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:50:00,789 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:50:00,807 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:50:00,956 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:50:00,958 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:50:01,361 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:50:01,599 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:50:01,600 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:50:01,602 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:50:01 BoogieIcfgContainer [2023-08-03 17:50:01,602 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:50:01,604 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:50:01,604 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:50:01,607 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:50:01,607 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:50:00" (1/3) ... [2023-08-03 17:50:01,607 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9c01e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:50:01, skipping insertion in model container [2023-08-03 17:50:01,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:50:00" (2/3) ... [2023-08-03 17:50:01,608 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c9c01e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:50:01, skipping insertion in model container [2023-08-03 17:50:01,608 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:50:01" (3/3) ... [2023-08-03 17:50:01,609 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe000_power.opt_bound2.i [2023-08-03 17:50:01,617 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:50:01,625 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:50:01,625 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:50:01,626 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:50:01,715 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:50:01,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-03 17:50:01,845 INFO L124 PetriNetUnfolderBase]: 30/467 cut-off events. [2023-08-03 17:50:01,845 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:01,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 467 events. 30/467 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1952 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 288. Up to 16 conditions per place. [2023-08-03 17:50:01,854 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 148 transitions, 311 flow [2023-08-03 17:50:01,859 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 150 places, 148 transitions, 311 flow [2023-08-03 17:50:01,862 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:50:01,870 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 150 places, 148 transitions, 311 flow [2023-08-03 17:50:01,872 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 150 places, 148 transitions, 311 flow [2023-08-03 17:50:01,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-03 17:50:01,940 INFO L124 PetriNetUnfolderBase]: 30/467 cut-off events. [2023-08-03 17:50:01,941 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:01,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 467 events. 30/467 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1952 event pairs, 0 based on Foata normal form. 0/414 useless extension candidates. Maximal degree in co-relation 288. Up to 16 conditions per place. [2023-08-03 17:50:01,947 INFO L119 LiptonReduction]: Number of co-enabled transitions 2728 [2023-08-03 17:50:08,658 INFO L134 LiptonReduction]: Checked pairs total: 8313 [2023-08-03 17:50:08,658 INFO L136 LiptonReduction]: Total number of compositions: 126 [2023-08-03 17:50:08,670 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:50:08,676 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;@36604d2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:50:08,676 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:50:08,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:50:08,682 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-03 17:50:08,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:08,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:08,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:50:08,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:50:08,688 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:08,688 INFO L85 PathProgramCache]: Analyzing trace with hash 873899571, now seen corresponding path program 1 times [2023-08-03 17:50:08,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:08,697 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910716242] [2023-08-03 17:50:08,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:08,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:08,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:09,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:50:09,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:09,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910716242] [2023-08-03 17:50:09,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910716242] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:09,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:09,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:50:09,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637944922] [2023-08-03 17:50:09,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:09,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:09,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:09,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:09,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:50:09,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 274 [2023-08-03 17:50:09,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:50:09,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:09,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 274 [2023-08-03 17:50:09,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:50:09,993 INFO L124 PetriNetUnfolderBase]: 2492/4010 cut-off events. [2023-08-03 17:50:09,993 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-03 17:50:10,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8024 conditions, 4010 events. 2492/4010 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 23605 event pairs, 1010 based on Foata normal form. 150/3659 useless extension candidates. Maximal degree in co-relation 6974. Up to 2194 conditions per place. [2023-08-03 17:50:10,020 INFO L140 encePairwiseOnDemand]: 270/274 looper letters, 44 selfloop transitions, 2 changer transitions 4/55 dead transitions. [2023-08-03 17:50:10,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 55 transitions, 231 flow [2023-08-03 17:50:10,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:50:10,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:50:10,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-03 17:50:10,048 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5389294403892944 [2023-08-03 17:50:10,049 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-03 17:50:10,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-03 17:50:10,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:50:10,054 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-03 17:50:10,058 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:50:10,062 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:50:10,062 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 274.0) internal successors, (1096), 4 states have internal predecessors, (1096), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:50:10,064 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 85 flow. Second operand 3 states and 443 transitions. [2023-08-03 17:50:10,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 55 transitions, 231 flow [2023-08-03 17:50:10,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 55 transitions, 231 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:50:10,069 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 81 flow [2023-08-03 17:50:10,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=274, 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=81, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-03 17:50:10,075 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 1 predicate places. [2023-08-03 17:50:10,075 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 81 flow [2023-08-03 17:50:10,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.66666666666666) internal successors, (395), 3 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:50:10,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:10,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:50:10,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:50:10,076 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:50:10,078 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:10,078 INFO L85 PathProgramCache]: Analyzing trace with hash 1321139142, now seen corresponding path program 1 times [2023-08-03 17:50:10,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:10,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384560356] [2023-08-03 17:50:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:10,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:10,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:50:10,116 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:50:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:50:10,164 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:50:10,164 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:50:10,166 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:50:10,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:50:10,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:50:10,169 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:50:10,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:50:10,170 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:50:10,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:50:10,171 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:50:10,175 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:50:10,176 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:50:10,243 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:50:10,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 173 transitions, 382 flow [2023-08-03 17:50:10,398 INFO L124 PetriNetUnfolderBase]: 93/1396 cut-off events. [2023-08-03 17:50:10,398 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:50:10,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1396 events. 93/1396 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9424 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 1019. Up to 54 conditions per place. [2023-08-03 17:50:10,411 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 173 transitions, 382 flow [2023-08-03 17:50:10,416 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 173 transitions, 382 flow [2023-08-03 17:50:10,416 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:50:10,416 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 173 transitions, 382 flow [2023-08-03 17:50:10,417 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 173 transitions, 382 flow [2023-08-03 17:50:10,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 173 transitions, 382 flow [2023-08-03 17:50:10,567 INFO L124 PetriNetUnfolderBase]: 93/1396 cut-off events. [2023-08-03 17:50:10,567 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:50:10,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1494 conditions, 1396 events. 93/1396 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9424 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 1019. Up to 54 conditions per place. [2023-08-03 17:50:10,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 6560 [2023-08-03 17:50:18,316 INFO L134 LiptonReduction]: Checked pairs total: 23580 [2023-08-03 17:50:18,316 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-03 17:50:18,319 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:50:18,320 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;@36604d2c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:50:18,320 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:50:18,324 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:50:18,324 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-08-03 17:50:18,325 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:50:18,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:50:18,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 17:50:18,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:50:18,325 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:50:18,325 INFO L85 PathProgramCache]: Analyzing trace with hash 1188633942, now seen corresponding path program 1 times [2023-08-03 17:50:18,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:50:18,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636147359] [2023-08-03 17:50:18,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:50:18,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:50:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:50:18,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:50:18,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:50:18,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636147359] [2023-08-03 17:50:18,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1636147359] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:50:18,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:50:18,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 17:50:18,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913233801] [2023-08-03 17:50:18,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:50:18,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:50:18,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:50:18,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:50:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:50:18,440 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 305 [2023-08-03 17:50:18,441 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 54 transitions, 144 flow. Second operand has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:50:18,441 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:50:18,441 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 305 [2023-08-03 17:50:18,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:51:59,778 INFO L124 PetriNetUnfolderBase]: 584082/738943 cut-off events. [2023-08-03 17:51:59,779 INFO L125 PetriNetUnfolderBase]: For 10864/10864 co-relation queries the response was YES. [2023-08-03 17:52:01,056 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483674 conditions, 738943 events. 584082/738943 cut-off events. For 10864/10864 co-relation queries the response was YES. Maximal size of possible extension queue 16925. Compared 4906027 event pairs, 129702 based on Foata normal form. 16317/680271 useless extension candidates. Maximal degree in co-relation 1064064. Up to 614901 conditions per place. [2023-08-03 17:52:03,381 INFO L140 encePairwiseOnDemand]: 299/305 looper letters, 75 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-03 17:52:03,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 88 transitions, 389 flow [2023-08-03 17:52:03,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:52:03,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:52:03,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 520 transitions. [2023-08-03 17:52:03,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5683060109289617 [2023-08-03 17:52:03,387 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 520 transitions. [2023-08-03 17:52:03,387 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 520 transitions. [2023-08-03 17:52:03,387 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:52:03,387 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 520 transitions. [2023-08-03 17:52:03,388 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:52:03,390 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 17:52:03,391 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 17:52:03,391 INFO L175 Difference]: Start difference. First operand has 66 places, 54 transitions, 144 flow. Second operand 3 states and 520 transitions. [2023-08-03 17:52:03,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 88 transitions, 389 flow [2023-08-03 17:52:03,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 88 transitions, 383 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:52:03,399 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 157 flow [2023-08-03 17:52:03,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=305, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=157, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2023-08-03 17:52:03,400 INFO L281 CegarLoopForPetriNet]: 66 programPoint places, 3 predicate places. [2023-08-03 17:52:03,400 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 157 flow [2023-08-03 17:52:03,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:52:03,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:52:03,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:52:03,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:52:03,401 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:52:03,401 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:52:03,402 INFO L85 PathProgramCache]: Analyzing trace with hash 287780350, now seen corresponding path program 1 times [2023-08-03 17:52:03,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:52:03,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456142668] [2023-08-03 17:52:03,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:52:03,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:52:03,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:52:03,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:52:03,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:52:03,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456142668] [2023-08-03 17:52:03,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456142668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:52:03,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:52:03,437 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:52:03,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105216330] [2023-08-03 17:52:03,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:52:03,438 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:52:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:52:03,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:52:03,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:52:03,450 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 305 [2023-08-03 17:52:03,450 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 157 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:52:03,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:52:03,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 305 [2023-08-03 17:52:03,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand