/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_safe025_power_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 00:56:16,168 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 00:56:16,242 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 00:56:16,247 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 00:56:16,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 00:56:16,248 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 00:56:16,249 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 00:56:16,279 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 00:56:16,280 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 00:56:16,283 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 00:56:16,284 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 00:56:16,284 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 00:56:16,285 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 00:56:16,286 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 00:56:16,286 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 00:56:16,286 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 00:56:16,287 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 00:56:16,287 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 00:56:16,287 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 00:56:16,287 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 00:56:16,288 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 00:56:16,288 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 00:56:16,288 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 00:56:16,288 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 00:56:16,289 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 00:56:16,290 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 00:56:16,290 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 00:56:16,290 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 00:56:16,291 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 00:56:16,291 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 00:56:16,292 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:56:16,292 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 00:56:16,292 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 00:56:16,292 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 00:56:16,292 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 00:56:16,293 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 00:56:16,293 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 00:56:16,293 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 00:56:16,293 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 00:56:16,293 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 00:56:16,293 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 00:56:16,294 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 00:56:16,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 00:56:16,526 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 00:56:16,529 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 00:56:16,529 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 00:56:16,530 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 00:56:16,531 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_power_bound2.i [2023-08-04 00:56:17,694 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 00:56:17,973 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 00:56:17,974 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_power_bound2.i [2023-08-04 00:56:17,995 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca12b0319/e966e3174cef48aabb5e01e01b4fef04/FLAG6035fa8c0 [2023-08-04 00:56:18,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ca12b0319/e966e3174cef48aabb5e01e01b4fef04 [2023-08-04 00:56:18,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 00:56:18,016 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 00:56:18,018 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 00:56:18,018 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 00:56:18,021 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 00:56:18,021 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,022 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3abda73b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18, skipping insertion in model container [2023-08-04 00:56:18,023 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,060 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 00:56:18,178 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_safe025_power_bound2.i[990,1003] [2023-08-04 00:56:18,380 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:56:18,389 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 00:56:18,397 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_safe025_power_bound2.i[990,1003] [2023-08-04 00:56:18,405 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 00:56:18,407 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 00:56:18,447 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:56:18,474 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:56:18,474 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:56:18,480 INFO L206 MainTranslator]: Completed translation [2023-08-04 00:56:18,480 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18 WrapperNode [2023-08-04 00:56:18,480 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 00:56:18,481 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 00:56:18,481 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 00:56:18,482 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 00:56:18,487 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,502 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,535 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 253 [2023-08-04 00:56:18,535 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 00:56:18,536 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 00:56:18,536 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 00:56:18,536 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 00:56:18,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,556 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,556 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,580 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,582 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,584 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,588 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 00:56:18,589 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 00:56:18,589 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 00:56:18,589 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 00:56:18,590 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (1/1) ... [2023-08-04 00:56:18,595 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:56:18,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:56:18,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 00:56:18,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 00:56:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 00:56:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 00:56:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 00:56:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 00:56:18,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 00:56:18,678 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 00:56:18,679 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 00:56:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 00:56:18,679 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 00:56:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 00:56:18,679 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 00:56:18,679 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 00:56:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 00:56:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 00:56:18,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 00:56:18,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 00:56:18,681 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 00:56:18,838 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 00:56:18,839 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 00:56:19,344 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 00:56:19,644 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 00:56:19,644 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 00:56:19,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:56:19 BoogieIcfgContainer [2023-08-04 00:56:19,647 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 00:56:19,649 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 00:56:19,649 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 00:56:19,653 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 00:56:19,653 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 12:56:18" (1/3) ... [2023-08-04 00:56:19,654 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b295c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:56:19, skipping insertion in model container [2023-08-04 00:56:19,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:56:18" (2/3) ... [2023-08-04 00:56:19,655 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50b295c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:56:19, skipping insertion in model container [2023-08-04 00:56:19,655 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:56:19" (3/3) ... [2023-08-04 00:56:19,656 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe025_power_bound2.i [2023-08-04 00:56:19,664 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 00:56:19,672 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 00:56:19,672 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 00:56:19,672 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 00:56:19,751 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:56:19,789 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-04 00:56:19,971 INFO L124 PetriNetUnfolderBase]: 30/469 cut-off events. [2023-08-04 00:56:19,971 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:56:19,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 469 events. 30/469 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1993 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-08-04 00:56:19,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 148 transitions, 311 flow [2023-08-04 00:56:19,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 119 transitions, 253 flow [2023-08-04 00:56:19,982 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:56:19,989 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 119 transitions, 253 flow [2023-08-04 00:56:19,991 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 119 transitions, 253 flow [2023-08-04 00:56:19,992 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 119 transitions, 253 flow [2023-08-04 00:56:20,018 INFO L124 PetriNetUnfolderBase]: 6/237 cut-off events. [2023-08-04 00:56:20,019 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:56:20,020 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 237 events. 6/237 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-08-04 00:56:20,023 INFO L119 LiptonReduction]: Number of co-enabled transitions 1388 [2023-08-04 00:56:25,945 INFO L134 LiptonReduction]: Checked pairs total: 3988 [2023-08-04 00:56:25,946 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 00:56:25,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:56:25,963 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;@726e4d52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:56:25,963 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 00:56:25,968 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:56:25,968 INFO L124 PetriNetUnfolderBase]: 0/23 cut-off events. [2023-08-04 00:56:25,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:56:25,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:56:25,969 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 00:56:25,969 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:56:25,973 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:56:25,973 INFO L85 PathProgramCache]: Analyzing trace with hash 767263286, now seen corresponding path program 1 times [2023-08-04 00:56:25,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:56:25,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924995108] [2023-08-04 00:56:25,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:56:25,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:56:26,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:56:26,248 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 00:56:26,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:56:26,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924995108] [2023-08-04 00:56:26,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924995108] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:56:26,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:56:26,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:56:26,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396497936] [2023-08-04 00:56:26,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:56:26,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:56:26,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:56:26,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:56:26,282 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:56:26,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 246 [2023-08-04 00:56:26,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:56:26,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:56:26,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 246 [2023-08-04 00:56:26,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:56:26,600 INFO L124 PetriNetUnfolderBase]: 651/1125 cut-off events. [2023-08-04 00:56:26,600 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 00:56:26,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2313 conditions, 1125 events. 651/1125 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5388 event pairs, 360 based on Foata normal form. 0/969 useless extension candidates. Maximal degree in co-relation 2292. Up to 1040 conditions per place. [2023-08-04 00:56:26,609 INFO L140 encePairwiseOnDemand]: 243/246 looper letters, 25 selfloop transitions, 2 changer transitions 0/31 dead transitions. [2023-08-04 00:56:26,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 31 transitions, 131 flow [2023-08-04 00:56:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:56:26,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:56:26,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 403 transitions. [2023-08-04 00:56:26,624 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5460704607046071 [2023-08-04 00:56:26,625 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 403 transitions. [2023-08-04 00:56:26,625 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 403 transitions. [2023-08-04 00:56:26,626 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:56:26,628 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 403 transitions. [2023-08-04 00:56:26,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 134.33333333333334) internal successors, (403), 3 states have internal predecessors, (403), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:56:26,636 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:56:26,637 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 246.0) internal successors, (984), 4 states have internal predecessors, (984), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:56:26,638 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 69 flow. Second operand 3 states and 403 transitions. [2023-08-04 00:56:26,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 31 transitions, 131 flow [2023-08-04 00:56:26,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 31 transitions, 131 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 00:56:26,642 INFO L231 Difference]: Finished difference. Result has 37 places, 27 transitions, 77 flow [2023-08-04 00:56:26,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=246, PETRI_DIFFERENCE_MINUEND_FLOW=69, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=77, PETRI_PLACES=37, PETRI_TRANSITIONS=27} [2023-08-04 00:56:26,646 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 3 predicate places. [2023-08-04 00:56:26,646 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 27 transitions, 77 flow [2023-08-04 00:56:26,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:56:26,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:56:26,647 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 00:56:26,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 00:56:26,647 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:56:26,648 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:56:26,648 INFO L85 PathProgramCache]: Analyzing trace with hash 759090225, now seen corresponding path program 1 times [2023-08-04 00:56:26,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:56:26,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30847150] [2023-08-04 00:56:26,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:56:26,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:56:26,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:56:26,666 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 00:56:26,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:56:26,696 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 00:56:26,697 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 00:56:26,698 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 00:56:26,699 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 00:56:26,700 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 00:56:26,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 00:56:26,700 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 00:56:26,702 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 00:56:26,702 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 00:56:26,702 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 00:56:26,756 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:56:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 173 transitions, 382 flow [2023-08-04 00:56:26,991 INFO L124 PetriNetUnfolderBase]: 93/1404 cut-off events. [2023-08-04 00:56:26,991 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:56:26,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 1404 events. 93/1404 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9560 event pairs, 0 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 1027. Up to 54 conditions per place. [2023-08-04 00:56:26,998 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 173 transitions, 382 flow [2023-08-04 00:56:27,000 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 155 places, 144 transitions, 324 flow [2023-08-04 00:56:27,000 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:56:27,000 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 155 places, 144 transitions, 324 flow [2023-08-04 00:56:27,001 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 155 places, 144 transitions, 324 flow [2023-08-04 00:56:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 155 places, 144 transitions, 324 flow [2023-08-04 00:56:27,093 INFO L124 PetriNetUnfolderBase]: 12/621 cut-off events. [2023-08-04 00:56:27,093 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 00:56:27,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719 conditions, 621 events. 12/621 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3068 event pairs, 0 based on Foata normal form. 0/585 useless extension candidates. Maximal degree in co-relation 505. Up to 27 conditions per place. [2023-08-04 00:56:27,105 INFO L119 LiptonReduction]: Number of co-enabled transitions 3872 [2023-08-04 00:56:34,045 INFO L134 LiptonReduction]: Checked pairs total: 14407 [2023-08-04 00:56:34,045 INFO L136 LiptonReduction]: Total number of compositions: 105 [2023-08-04 00:56:34,048 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:56:34,053 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;@726e4d52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:56:34,054 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 00:56:34,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:56:34,067 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-04 00:56:34,071 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 00:56:34,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:56:34,072 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 00:56:34,072 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:56:34,075 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:56:34,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1368747082, now seen corresponding path program 1 times [2023-08-04 00:56:34,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:56:34,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545120580] [2023-08-04 00:56:34,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:56:34,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:56:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:56:34,158 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:56:34,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:56:34,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545120580] [2023-08-04 00:56:34,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545120580] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:56:34,159 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:56:34,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:56:34,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486683360] [2023-08-04 00:56:34,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:56:34,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:56:34,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:56:34,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:56:34,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:56:34,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 278 [2023-08-04 00:56:34,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:56:34,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:56:34,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 278 [2023-08-04 00:56:34,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:57:09,612 INFO L124 PetriNetUnfolderBase]: 190455/244746 cut-off events. [2023-08-04 00:57:09,612 INFO L125 PetriNetUnfolderBase]: For 15736/15736 co-relation queries the response was YES. [2023-08-04 00:57:10,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 503653 conditions, 244746 events. 190455/244746 cut-off events. For 15736/15736 co-relation queries the response was YES. Maximal size of possible extension queue 6811. Compared 1525610 event pairs, 152808 based on Foata normal form. 0/214781 useless extension candidates. Maximal degree in co-relation 116309. Up to 240652 conditions per place. [2023-08-04 00:57:11,170 INFO L140 encePairwiseOnDemand]: 275/278 looper letters, 41 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-04 00:57:11,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 51 transitions, 224 flow [2023-08-04 00:57:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:57:11,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:57:11,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 461 transitions. [2023-08-04 00:57:11,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.552757793764988 [2023-08-04 00:57:11,174 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 461 transitions. [2023-08-04 00:57:11,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 461 transitions. [2023-08-04 00:57:11,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:57:11,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 461 transitions. [2023-08-04 00:57:11,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 153.66666666666666) internal successors, (461), 3 states have internal predecessors, (461), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:11,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:11,177 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:11,177 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 128 flow. Second operand 3 states and 461 transitions. [2023-08-04 00:57:11,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 51 transitions, 224 flow [2023-08-04 00:57:11,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 51 transitions, 218 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-04 00:57:11,193 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 134 flow [2023-08-04 00:57:11,194 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-04 00:57:11,194 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-08-04 00:57:11,194 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 134 flow [2023-08-04 00:57:11,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 141.0) internal successors, (423), 3 states have internal predecessors, (423), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:11,195 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:57:11,195 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 00:57:11,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 00:57:11,195 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:57:11,196 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:57:11,196 INFO L85 PathProgramCache]: Analyzing trace with hash 114418931, now seen corresponding path program 1 times [2023-08-04 00:57:11,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:57:11,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544216724] [2023-08-04 00:57:11,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:57:11,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:57:11,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:57:11,265 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:57:11,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:57:11,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544216724] [2023-08-04 00:57:11,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544216724] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:57:11,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2098687602] [2023-08-04 00:57:11,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:57:11,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:57:11,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:57:11,269 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:57:11,270 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 00:57:11,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:57:11,391 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:57:11,393 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:57:11,443 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:57:11,443 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:57:11,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2098687602] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:57:11,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:57:11,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:57:11,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876183362] [2023-08-04 00:57:11,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:57:11,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:57:11,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:57:11,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:57:11,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:57:11,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2023-08-04 00:57:11,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:11,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:57:11,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2023-08-04 00:57:11,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:57:45,345 INFO L124 PetriNetUnfolderBase]: 190431/244802 cut-off events. [2023-08-04 00:57:45,346 INFO L125 PetriNetUnfolderBase]: For 14744/14744 co-relation queries the response was YES. [2023-08-04 00:57:46,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502808 conditions, 244802 events. 190431/244802 cut-off events. For 14744/14744 co-relation queries the response was YES. Maximal size of possible extension queue 6815. Compared 1528235 event pairs, 122700 based on Foata normal form. 16/214837 useless extension candidates. Maximal degree in co-relation 131964. Up to 240569 conditions per place. [2023-08-04 00:57:46,992 INFO L140 encePairwiseOnDemand]: 274/278 looper letters, 46 selfloop transitions, 4 changer transitions 0/57 dead transitions. [2023-08-04 00:57:46,992 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 254 flow [2023-08-04 00:57:46,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:57:46,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:57:46,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 741 transitions. [2023-08-04 00:57:46,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5330935251798561 [2023-08-04 00:57:46,995 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 741 transitions. [2023-08-04 00:57:46,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 741 transitions. [2023-08-04 00:57:46,996 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:57:46,996 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 741 transitions. [2023-08-04 00:57:46,998 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 148.2) internal successors, (741), 5 states have internal predecessors, (741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:47,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:47,001 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 278.0) internal successors, (1668), 6 states have internal predecessors, (1668), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:47,001 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 134 flow. Second operand 5 states and 741 transitions. [2023-08-04 00:57:47,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 254 flow [2023-08-04 00:57:47,008 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 57 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 00:57:47,009 INFO L231 Difference]: Finished difference. Result has 65 places, 47 transitions, 148 flow [2023-08-04 00:57:47,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=127, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=47} [2023-08-04 00:57:47,010 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 6 predicate places. [2023-08-04 00:57:47,010 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 47 transitions, 148 flow [2023-08-04 00:57:47,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 139.6) internal successors, (698), 5 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:47,011 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:57:47,011 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:57:47,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 00:57:47,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:57:47,216 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:57:47,216 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:57:47,217 INFO L85 PathProgramCache]: Analyzing trace with hash 706143462, now seen corresponding path program 1 times [2023-08-04 00:57:47,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:57:47,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685952830] [2023-08-04 00:57:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:57:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:57:47,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:57:47,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:57:47,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:57:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685952830] [2023-08-04 00:57:47,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685952830] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:57:47,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576221584] [2023-08-04 00:57:47,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:57:47,286 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:57:47,286 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:57:47,288 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:57:47,290 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 00:57:47,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:57:47,417 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:57:47,417 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:57:47,425 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:57:47,425 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:57:47,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1576221584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:57:47,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:57:47,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:57:47,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176447594] [2023-08-04 00:57:47,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:57:47,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:57:47,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:57:47,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:57:47,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:57:47,436 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 278 [2023-08-04 00:57:47,436 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 47 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:57:47,436 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:57:47,436 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 278 [2023-08-04 00:57:47,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:58:21,380 INFO L124 PetriNetUnfolderBase]: 188544/252215 cut-off events. [2023-08-04 00:58:21,381 INFO L125 PetriNetUnfolderBase]: For 14040/14040 co-relation queries the response was YES. [2023-08-04 00:58:22,131 INFO L83 FinitePrefix]: Finished finitePrefix Result has 509477 conditions, 252215 events. 188544/252215 cut-off events. For 14040/14040 co-relation queries the response was YES. Maximal size of possible extension queue 7591. Compared 1747095 event pairs, 146181 based on Foata normal form. 0/221574 useless extension candidates. Maximal degree in co-relation 116198. Up to 237488 conditions per place. [2023-08-04 00:58:22,910 INFO L140 encePairwiseOnDemand]: 275/278 looper letters, 51 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-04 00:58:22,910 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 284 flow [2023-08-04 00:58:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:58:22,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:58:22,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-04 00:58:22,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5635491606714629 [2023-08-04 00:58:22,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-04 00:58:22,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-04 00:58:22,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:58:22,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-04 00:58:22,913 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:22,915 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:22,916 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 278.0) internal successors, (1112), 4 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:22,916 INFO L175 Difference]: Start difference. First operand has 65 places, 47 transitions, 148 flow. Second operand 3 states and 470 transitions. [2023-08-04 00:58:22,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 284 flow [2023-08-04 00:58:22,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 61 transitions, 277 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 00:58:22,918 INFO L231 Difference]: Finished difference. Result has 66 places, 48 transitions, 156 flow [2023-08-04 00:58:22,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=156, PETRI_PLACES=66, PETRI_TRANSITIONS=48} [2023-08-04 00:58:22,919 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 7 predicate places. [2023-08-04 00:58:22,919 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 48 transitions, 156 flow [2023-08-04 00:58:22,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.0) internal successors, (426), 3 states have internal predecessors, (426), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:22,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:58:22,920 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:58:22,924 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 00:58:23,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:58:23,120 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:58:23,121 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:58:23,121 INFO L85 PathProgramCache]: Analyzing trace with hash 1333070369, now seen corresponding path program 1 times [2023-08-04 00:58:23,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:58:23,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290381647] [2023-08-04 00:58:23,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:58:23,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:58:23,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:58:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:58:23,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:58:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290381647] [2023-08-04 00:58:23,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290381647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:58:23,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [789349868] [2023-08-04 00:58:23,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:58:23,161 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:58:23,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:58:23,163 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:58:23,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 00:58:23,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:58:23,286 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:58:23,287 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:58:23,300 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:58:23,301 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:58:23,329 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:58:23,330 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [789349868] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:58:23,330 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:58:23,330 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 00:58:23,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327981236] [2023-08-04 00:58:23,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:58:23,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:58:23,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:58:23,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:58:23,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:58:23,349 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2023-08-04 00:58:23,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 48 transitions, 156 flow. Second operand has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:23,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:58:23,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2023-08-04 00:58:23,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:58:51,494 INFO L124 PetriNetUnfolderBase]: 156762/209469 cut-off events. [2023-08-04 00:58:51,494 INFO L125 PetriNetUnfolderBase]: For 13112/13112 co-relation queries the response was YES. [2023-08-04 00:58:52,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 423117 conditions, 209469 events. 156762/209469 cut-off events. For 13112/13112 co-relation queries the response was YES. Maximal size of possible extension queue 6834. Compared 1422566 event pairs, 97536 based on Foata normal form. 4/187424 useless extension candidates. Maximal degree in co-relation 110693. Up to 196217 conditions per place. [2023-08-04 00:58:52,837 INFO L140 encePairwiseOnDemand]: 275/278 looper letters, 47 selfloop transitions, 3 changer transitions 0/57 dead transitions. [2023-08-04 00:58:52,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 57 transitions, 269 flow [2023-08-04 00:58:52,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:58:52,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:58:52,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 602 transitions. [2023-08-04 00:58:52,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413669064748201 [2023-08-04 00:58:52,839 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 602 transitions. [2023-08-04 00:58:52,839 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 602 transitions. [2023-08-04 00:58:52,839 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:58:52,839 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 602 transitions. [2023-08-04 00:58:52,841 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 150.5) internal successors, (602), 4 states have internal predecessors, (602), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:52,843 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:52,844 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 278.0) internal successors, (1390), 5 states have internal predecessors, (1390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:52,844 INFO L175 Difference]: Start difference. First operand has 66 places, 48 transitions, 156 flow. Second operand 4 states and 602 transitions. [2023-08-04 00:58:52,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 57 transitions, 269 flow [2023-08-04 00:58:52,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 57 transitions, 267 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:58:52,846 INFO L231 Difference]: Finished difference. Result has 68 places, 47 transitions, 151 flow [2023-08-04 00:58:52,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=278, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=151, PETRI_PLACES=68, PETRI_TRANSITIONS=47} [2023-08-04 00:58:52,847 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-08-04 00:58:52,847 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 47 transitions, 151 flow [2023-08-04 00:58:52,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:52,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:58:52,848 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:58:52,861 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 00:58:53,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:58:53,055 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 00:58:53,056 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:58:53,056 INFO L85 PathProgramCache]: Analyzing trace with hash 220620636, now seen corresponding path program 1 times [2023-08-04 00:58:53,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:58:53,056 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705493795] [2023-08-04 00:58:53,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:58:53,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:58:53,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:58:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:58:53,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:58:53,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705493795] [2023-08-04 00:58:53,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705493795] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:58:53,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84903105] [2023-08-04 00:58:53,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:58:53,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:58:53,164 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:58:53,171 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 00:58:53,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 00:58:53,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:58:53,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:58:53,294 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:58:53,310 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:58:53,311 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:58:53,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84903105] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:58:53,311 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:58:53,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 00:58:53,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245028983] [2023-08-04 00:58:53,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:58:53,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:58:53,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:58:53,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:58:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:58:53,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 278 [2023-08-04 00:58:53,325 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 47 transitions, 151 flow. Second operand has 5 states, 5 states have (on average 140.6) internal successors, (703), 5 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:58:53,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:58:53,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 278 [2023-08-04 00:58:53,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand