/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_safe019_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:37:04,318 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:37:04,398 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:37:04,403 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:37:04,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:37:04,404 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:37:04,405 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:37:04,432 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:37:04,433 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:37:04,436 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:37:04,437 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:37:04,437 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:37:04,437 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:37:04,438 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:37:04,439 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:37:04,439 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:37:04,439 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:37:04,439 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:37:04,439 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:37:04,440 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:37:04,440 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:37:04,440 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:37:04,440 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:37:04,441 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:37:04,441 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:37:04,441 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:37:04,441 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:37:04,442 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:37:04,442 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:37:04,442 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:37:04,443 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:37:04,443 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:37:04,443 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:37:04,443 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:37:04,444 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:37:04,445 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:37:04,684 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:37:04,708 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:37:04,711 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:37:04,712 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:37:04,712 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:37:04,713 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe019_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:37:05,959 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:37:06,232 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:37:06,236 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe019_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:37:06,259 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768250047/36d1904ce2be4ee19131999e08f3a45a/FLAG9ca4e4078 [2023-08-03 18:37:06,275 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/768250047/36d1904ce2be4ee19131999e08f3a45a [2023-08-03 18:37:06,279 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:37:06,281 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:37:06,284 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:37:06,284 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:37:06,287 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:37:06,287 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,288 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a405531 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06, skipping insertion in model container [2023-08-03 18:37:06,288 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,339 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:37:06,469 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_safe019_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:37:06,612 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:37:06,621 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:37:06,629 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_safe019_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:37:06,638 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:37:06,640 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:37:06,663 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:37:06,688 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:37:06,688 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:37:06,693 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:37:06,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06 WrapperNode [2023-08-03 18:37:06,694 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:37:06,695 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:37:06,695 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:37:06,695 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:37:06,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,717 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,744 INFO L138 Inliner]: procedures = 177, calls = 62, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 114 [2023-08-03 18:37:06,745 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:37:06,745 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:37:06,745 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:37:06,745 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:37:06,752 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,753 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,757 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,758 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,770 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,774 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,778 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,779 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,782 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:37:06,782 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:37:06,783 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:37:06,783 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:37:06,783 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (1/1) ... [2023-08-03 18:37:06,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:37:06,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:37:06,815 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 18:37:06,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 18:37:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:37:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:37:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:37:06,859 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:37:06,860 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:37:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:37:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:37:06,861 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:37:06,861 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:37:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:37:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:37:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-03 18:37:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-03 18:37:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:37:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:37:06,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:37:06,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:37:06,864 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:37:07,016 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:37:07,017 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:37:07,273 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:37:07,279 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:37:07,279 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 18:37:07,281 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:37:07 BoogieIcfgContainer [2023-08-03 18:37:07,281 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:37:07,283 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:37:07,283 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:37:07,289 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:37:07,290 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:37:06" (1/3) ... [2023-08-03 18:37:07,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bccea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:37:07, skipping insertion in model container [2023-08-03 18:37:07,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:37:06" (2/3) ... [2023-08-03 18:37:07,291 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46bccea2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:37:07, skipping insertion in model container [2023-08-03 18:37:07,291 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:37:07" (3/3) ... [2023-08-03 18:37:07,292 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe019_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:37:07,300 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:37:07,308 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:37:07,308 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:37:07,309 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:37:07,389 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:37:07,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 130 places, 127 transitions, 274 flow [2023-08-03 18:37:07,630 INFO L124 PetriNetUnfolderBase]: 62/860 cut-off events. [2023-08-03 18:37:07,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:37:07,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 860 events. 62/860 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5302 event pairs, 0 based on Foata normal form. 0/752 useless extension candidates. Maximal degree in co-relation 513. Up to 32 conditions per place. [2023-08-03 18:37:07,639 INFO L82 GeneralOperation]: Start removeDead. Operand has 130 places, 127 transitions, 274 flow [2023-08-03 18:37:07,645 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 113 transitions, 246 flow [2023-08-03 18:37:07,648 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:37:07,661 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 113 transitions, 246 flow [2023-08-03 18:37:07,665 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 113 transitions, 246 flow [2023-08-03 18:37:07,666 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 113 transitions, 246 flow [2023-08-03 18:37:07,738 INFO L124 PetriNetUnfolderBase]: 46/636 cut-off events. [2023-08-03 18:37:07,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:37:07,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 636 events. 46/636 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3557 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 401. Up to 32 conditions per place. [2023-08-03 18:37:07,750 INFO L119 LiptonReduction]: Number of co-enabled transitions 2526 [2023-08-03 18:37:09,945 INFO L134 LiptonReduction]: Checked pairs total: 3698 [2023-08-03 18:37:09,945 INFO L136 LiptonReduction]: Total number of compositions: 91 [2023-08-03 18:37:09,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:37:09,962 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;@78fa0bc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:37:09,962 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:37:09,966 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:37:09,966 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 18:37:09,967 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:37:09,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:37:09,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:37:09,968 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:37:09,972 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:37:09,972 INFO L85 PathProgramCache]: Analyzing trace with hash 232081620, now seen corresponding path program 1 times [2023-08-03 18:37:09,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:37:09,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730401808] [2023-08-03 18:37:09,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:37:09,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:37:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:37:10,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:37:10,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:37:10,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730401808] [2023-08-03 18:37:10,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730401808] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:37:10,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:37:10,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:37:10,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828138195] [2023-08-03 18:37:10,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:37:10,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:37:10,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:37:10,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:37:10,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:37:10,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 218 [2023-08-03 18:37:10,248 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 33 transitions, 86 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:37:10,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:37:10,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 218 [2023-08-03 18:37:10,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:37:10,651 INFO L124 PetriNetUnfolderBase]: 2144/3446 cut-off events. [2023-08-03 18:37:10,652 INFO L125 PetriNetUnfolderBase]: For 30/30 co-relation queries the response was YES. [2023-08-03 18:37:10,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6929 conditions, 3446 events. 2144/3446 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 19889 event pairs, 1422 based on Foata normal form. 0/3167 useless extension candidates. Maximal degree in co-relation 6909. Up to 3228 conditions per place. [2023-08-03 18:37:10,674 INFO L140 encePairwiseOnDemand]: 214/218 looper letters, 27 selfloop transitions, 2 changer transitions 0/35 dead transitions. [2023-08-03 18:37:10,675 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 148 flow [2023-08-03 18:37:10,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:37:10,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:37:10,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-03 18:37:10,687 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611620795107034 [2023-08-03 18:37:10,688 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-03 18:37:10,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-03 18:37:10,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:37:10,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-03 18:37:10,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:37:10,699 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:37:10,700 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 218.0) internal successors, (872), 4 states have internal predecessors, (872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:37:10,701 INFO L175 Difference]: Start difference. First operand has 41 places, 33 transitions, 86 flow. Second operand 3 states and 367 transitions. [2023-08-03 18:37:10,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 148 flow [2023-08-03 18:37:10,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 35 transitions, 148 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:37:10,706 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 92 flow [2023-08-03 18:37:10,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=218, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=92, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-03 18:37:10,711 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-03 18:37:10,711 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 92 flow [2023-08-03 18:37:10,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:37:10,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:37:10,712 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:37:10,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:37:10,712 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:37:10,712 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:37:10,713 INFO L85 PathProgramCache]: Analyzing trace with hash 241776219, now seen corresponding path program 1 times [2023-08-03 18:37:10,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:37:10,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572551177] [2023-08-03 18:37:10,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:37:10,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:37:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:37:10,732 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:37:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:37:10,773 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:37:10,773 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:37:10,774 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 18:37:10,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 18:37:10,776 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 18:37:10,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:37:10,777 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 18:37:10,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:37:10,778 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:37:10,782 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:37:10,782 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:37:10,813 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:37:10,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 153 transitions, 354 flow [2023-08-03 18:37:11,246 INFO L124 PetriNetUnfolderBase]: 282/4025 cut-off events. [2023-08-03 18:37:11,246 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:37:11,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4314 conditions, 4025 events. 282/4025 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 38325 event pairs, 0 based on Foata normal form. 0/3542 useless extension candidates. Maximal degree in co-relation 2928. Up to 162 conditions per place. [2023-08-03 18:37:11,272 INFO L82 GeneralOperation]: Start removeDead. Operand has 164 places, 153 transitions, 354 flow [2023-08-03 18:37:11,282 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 151 places, 139 transitions, 326 flow [2023-08-03 18:37:11,283 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:37:11,283 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 151 places, 139 transitions, 326 flow [2023-08-03 18:37:11,283 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 151 places, 139 transitions, 326 flow [2023-08-03 18:37:11,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 151 places, 139 transitions, 326 flow [2023-08-03 18:37:11,597 INFO L124 PetriNetUnfolderBase]: 201/2891 cut-off events. [2023-08-03 18:37:11,598 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-03 18:37:11,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3180 conditions, 2891 events. 201/2891 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 25417 event pairs, 0 based on Foata normal form. 0/2570 useless extension candidates. Maximal degree in co-relation 2172. Up to 162 conditions per place. [2023-08-03 18:37:11,664 INFO L119 LiptonReduction]: Number of co-enabled transitions 6200 [2023-08-03 18:37:13,760 INFO L134 LiptonReduction]: Checked pairs total: 11448 [2023-08-03 18:37:13,760 INFO L136 LiptonReduction]: Total number of compositions: 99 [2023-08-03 18:37:13,762 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:37:13,763 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;@78fa0bc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:37:13,763 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 18:37:13,766 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:37:13,766 INFO L124 PetriNetUnfolderBase]: 0/15 cut-off events. [2023-08-03 18:37:13,766 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:37:13,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:37:13,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 18:37:13,766 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:37:13,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:37:13,767 INFO L85 PathProgramCache]: Analyzing trace with hash -133681097, now seen corresponding path program 1 times [2023-08-03 18:37:13,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:37:13,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600029972] [2023-08-03 18:37:13,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:37:13,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:37:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:37:13,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:37:13,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:37:13,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600029972] [2023-08-03 18:37:13,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600029972] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:37:13,847 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:37:13,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:37:13,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778646679] [2023-08-03 18:37:13,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:37:13,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:37:13,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:37:13,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:37:13,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:37:13,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 252 [2023-08-03 18:37:13,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:37:13,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:37:13,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 252 [2023-08-03 18:37:13,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:01,908 INFO L124 PetriNetUnfolderBase]: 576290/738810 cut-off events. [2023-08-03 18:38:01,909 INFO L125 PetriNetUnfolderBase]: For 23844/23844 co-relation queries the response was YES. [2023-08-03 18:38:04,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1482841 conditions, 738810 events. 576290/738810 cut-off events. For 23844/23844 co-relation queries the response was YES. Maximal size of possible extension queue 15839. Compared 5016246 event pairs, 485484 based on Foata normal form. 0/702704 useless extension candidates. Maximal degree in co-relation 436851. Up to 712500 conditions per place. [2023-08-03 18:38:07,257 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 40 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2023-08-03 18:38:07,257 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 54 transitions, 240 flow [2023-08-03 18:38:07,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:07,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:07,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-03 18:38:07,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58994708994709 [2023-08-03 18:38:07,261 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-03 18:38:07,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-03 18:38:07,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:07,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-03 18:38:07,263 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:07,265 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:07,265 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:07,266 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 150 flow. Second operand 3 states and 446 transitions. [2023-08-03 18:38:07,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 54 transitions, 240 flow [2023-08-03 18:38:07,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 54 transitions, 232 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-08-03 18:38:07,299 INFO L231 Difference]: Finished difference. Result has 70 places, 51 transitions, 152 flow [2023-08-03 18:38:07,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=152, PETRI_PLACES=70, PETRI_TRANSITIONS=51} [2023-08-03 18:38:07,300 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-03 18:38:07,300 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 51 transitions, 152 flow [2023-08-03 18:38:07,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:07,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:07,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:07,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:38:07,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:38:07,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:07,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1542246452, now seen corresponding path program 1 times [2023-08-03 18:38:07,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:07,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214950630] [2023-08-03 18:38:07,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:07,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:07,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:38:07,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:07,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214950630] [2023-08-03 18:38:07,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214950630] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:07,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2039509018] [2023-08-03 18:38:07,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:07,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:07,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:07,381 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:38:07,385 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:38:07,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:07,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:38:07,471 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:07,500 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:38:07,500 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:38:07,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2039509018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:07,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:38:07,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:38:07,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811734912] [2023-08-03 18:38:07,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:07,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:38:07,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:07,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:38:07,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:07,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 252 [2023-08-03 18:38:07,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 51 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:07,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:07,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 252 [2023-08-03 18:38:07,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:54,328 INFO L124 PetriNetUnfolderBase]: 543278/692744 cut-off events. [2023-08-03 18:38:54,328 INFO L125 PetriNetUnfolderBase]: For 17271/17271 co-relation queries the response was YES. [2023-08-03 18:38:57,062 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390242 conditions, 692744 events. 543278/692744 cut-off events. For 17271/17271 co-relation queries the response was YES. Maximal size of possible extension queue 15729. Compared 4615379 event pairs, 459424 based on Foata normal form. 0/664771 useless extension candidates. Maximal degree in co-relation 1390203. Up to 668923 conditions per place. [2023-08-03 18:38:59,854 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 45 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 18:38:59,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 59 transitions, 262 flow [2023-08-03 18:38:59,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:59,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 449 transitions. [2023-08-03 18:38:59,857 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.593915343915344 [2023-08-03 18:38:59,857 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 449 transitions. [2023-08-03 18:38:59,857 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 449 transitions. [2023-08-03 18:38:59,857 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:59,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 449 transitions. [2023-08-03 18:38:59,858 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 149.66666666666666) internal successors, (449), 3 states have internal predecessors, (449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:59,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:59,861 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:59,861 INFO L175 Difference]: Start difference. First operand has 70 places, 51 transitions, 152 flow. Second operand 3 states and 449 transitions. [2023-08-03 18:38:59,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 59 transitions, 262 flow [2023-08-03 18:38:59,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 59 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:38:59,877 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 162 flow [2023-08-03 18:38:59,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=162, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-08-03 18:38:59,878 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 5 predicate places. [2023-08-03 18:38:59,879 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 162 flow [2023-08-03 18:38:59,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:38:59,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:59,879 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:38:59,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 18:39:00,085 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:39:00,086 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:39:00,086 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:39:00,086 INFO L85 PathProgramCache]: Analyzing trace with hash 822546326, now seen corresponding path program 1 times [2023-08-03 18:39:00,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:39:00,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505798839] [2023-08-03 18:39:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:00,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:39:00,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:00,173 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:39:00,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:39:00,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505798839] [2023-08-03 18:39:00,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505798839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:39:00,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1360292437] [2023-08-03 18:39:00,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:00,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:39:00,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:39:00,176 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:39:00,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:39:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:00,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:39:00,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:39:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:39:00,304 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:39:00,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1360292437] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:39:00,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:39:00,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:39:00,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808075024] [2023-08-03 18:39:00,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:39:00,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:39:00,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:39:00,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:39:00,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:39:00,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:39:00,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:39:00,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:39:00,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:39:00,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:39:47,858 INFO L124 PetriNetUnfolderBase]: 543266/692703 cut-off events. [2023-08-03 18:39:47,858 INFO L125 PetriNetUnfolderBase]: For 17559/17559 co-relation queries the response was YES. [2023-08-03 18:39:50,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1390511 conditions, 692703 events. 543266/692703 cut-off events. For 17559/17559 co-relation queries the response was YES. Maximal size of possible extension queue 15613. Compared 4615903 event pairs, 396552 based on Foata normal form. 9/664883 useless extension candidates. Maximal degree in co-relation 411586. Up to 669001 conditions per place. [2023-08-03 18:39:53,305 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 44 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-03 18:39:53,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 59 transitions, 275 flow [2023-08-03 18:39:53,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:39:53,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:39:53,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 713 transitions. [2023-08-03 18:39:53,308 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658730158730159 [2023-08-03 18:39:53,308 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 713 transitions. [2023-08-03 18:39:53,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 713 transitions. [2023-08-03 18:39:53,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:39:53,308 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 713 transitions. [2023-08-03 18:39:53,310 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 142.6) internal successors, (713), 5 states have internal predecessors, (713), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:39:53,312 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:39:53,313 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:39:53,313 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 162 flow. Second operand 5 states and 713 transitions. [2023-08-03 18:39:53,313 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 59 transitions, 275 flow [2023-08-03 18:39:53,315 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 59 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:39:53,316 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 178 flow [2023-08-03 18:39:53,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=178, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-08-03 18:39:53,317 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-03 18:39:53,317 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 178 flow [2023-08-03 18:39:53,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 134.6) internal successors, (673), 5 states have internal predecessors, (673), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:39:53,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:39:53,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:39:53,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 18:39:53,522 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 [2023-08-03 18:39:53,522 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:39:53,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:39:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash -454634916, now seen corresponding path program 1 times [2023-08-03 18:39:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:39:53,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775849436] [2023-08-03 18:39:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:39:53,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:53,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:39:53,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:39:53,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775849436] [2023-08-03 18:39:53,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775849436] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:39:53,611 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070426781] [2023-08-03 18:39:53,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:53,611 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:39:53,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:39:53,613 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) [2023-08-03 18:39:53,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:39:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:53,699 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:39:53,700 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:39:53,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 18:39:53,709 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:39:53,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070426781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:39:53,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:39:53,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:39:53,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458094637] [2023-08-03 18:39:53,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:39:53,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:39:53,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:39:53,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:39:53,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:39:53,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 252 [2023-08-03 18:39:53,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 178 flow. Second operand has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:39:53,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:39:53,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 252 [2023-08-03 18:39:53,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:40:39,541 INFO L124 PetriNetUnfolderBase]: 512834/645320 cut-off events. [2023-08-03 18:40:39,542 INFO L125 PetriNetUnfolderBase]: For 13849/13849 co-relation queries the response was YES. [2023-08-03 18:40:42,100 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1301470 conditions, 645320 events. 512834/645320 cut-off events. For 13849/13849 co-relation queries the response was YES. Maximal size of possible extension queue 15278. Compared 4154273 event pairs, 434258 based on Foata normal form. 0/620263 useless extension candidates. Maximal degree in co-relation 383888. Up to 626984 conditions per place. [2023-08-03 18:40:44,378 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 51 selfloop transitions, 2 changer transitions 0/64 dead transitions. [2023-08-03 18:40:44,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 308 flow [2023-08-03 18:40:44,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:40:44,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:40:44,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 453 transitions. [2023-08-03 18:40:44,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2023-08-03 18:40:44,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 453 transitions. [2023-08-03 18:40:44,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 453 transitions. [2023-08-03 18:40:44,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:40:44,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 453 transitions. [2023-08-03 18:40:44,381 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 151.0) internal successors, (453), 3 states have internal predecessors, (453), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:40:44,383 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:40:44,383 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:40:44,383 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 178 flow. Second operand 3 states and 453 transitions. [2023-08-03 18:40:44,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 308 flow [2023-08-03 18:40:44,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 64 transitions, 301 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:40:44,386 INFO L231 Difference]: Finished difference. Result has 76 places, 53 transitions, 183 flow [2023-08-03 18:40:44,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=76, PETRI_TRANSITIONS=53} [2023-08-03 18:40:44,387 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-03 18:40:44,387 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 53 transitions, 183 flow [2023-08-03 18:40:44,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 138.0) internal successors, (414), 3 states have internal predecessors, (414), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:40:44,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:40:44,387 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:40:44,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:40:44,592 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 [2023-08-03 18:40:44,592 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:40:44,592 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:40:44,593 INFO L85 PathProgramCache]: Analyzing trace with hash 870183089, now seen corresponding path program 1 times [2023-08-03 18:40:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:40:44,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376923468] [2023-08-03 18:40:44,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:40:44,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:40:44,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:40:44,643 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:40:44,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:40:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376923468] [2023-08-03 18:40:44,644 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376923468] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:40:44,644 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1602239873] [2023-08-03 18:40:44,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:40:44,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:40:44,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:40:44,646 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) [2023-08-03 18:40:44,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:40:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:40:44,728 INFO L262 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:40:44,729 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:40:44,745 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:40:44,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:40:44,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:40:44,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1602239873] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:40:44,766 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:40:44,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:40:44,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909499674] [2023-08-03 18:40:44,766 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:40:44,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:40:44,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:40:44,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:40:44,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:40:44,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:40:44,784 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 53 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:40:44,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:40:44,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:40:44,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:21,289 INFO L124 PetriNetUnfolderBase]: 399196/498755 cut-off events. [2023-08-03 18:41:21,289 INFO L125 PetriNetUnfolderBase]: For 13458/13458 co-relation queries the response was YES. [2023-08-03 18:41:23,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008474 conditions, 498755 events. 399196/498755 cut-off events. For 13458/13458 co-relation queries the response was YES. Maximal size of possible extension queue 12048. Compared 3056607 event pairs, 282654 based on Foata normal form. 3/481234 useless extension candidates. Maximal degree in co-relation 355558. Up to 486586 conditions per place. [2023-08-03 18:41:25,496 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 45 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 18:41:25,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 59 transitions, 287 flow [2023-08-03 18:41:25,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:41:25,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:41:25,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 579 transitions. [2023-08-03 18:41:25,498 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5744047619047619 [2023-08-03 18:41:25,498 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 579 transitions. [2023-08-03 18:41:25,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 579 transitions. [2023-08-03 18:41:25,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:41:25,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 579 transitions. [2023-08-03 18:41:25,500 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 144.75) internal successors, (579), 4 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:25,502 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:25,502 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:25,502 INFO L175 Difference]: Start difference. First operand has 76 places, 53 transitions, 183 flow. Second operand 4 states and 579 transitions. [2023-08-03 18:41:25,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 59 transitions, 287 flow [2023-08-03 18:41:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 59 transitions, 285 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:41:25,507 INFO L231 Difference]: Finished difference. Result has 78 places, 52 transitions, 179 flow [2023-08-03 18:41:25,507 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=173, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=78, PETRI_TRANSITIONS=52} [2023-08-03 18:41:25,508 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 11 predicate places. [2023-08-03 18:41:25,508 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 52 transitions, 179 flow [2023-08-03 18:41:25,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:25,508 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:41:25,508 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:41:25,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:41:25,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:25,712 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:41:25,713 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:41:25,713 INFO L85 PathProgramCache]: Analyzing trace with hash 497697293, now seen corresponding path program 1 times [2023-08-03 18:41:25,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:41:25,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082015140] [2023-08-03 18:41:25,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:25,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:41:25,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:25,796 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:25,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:41:25,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082015140] [2023-08-03 18:41:25,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082015140] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:41:25,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1079510743] [2023-08-03 18:41:25,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:41:25,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:41:25,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:41:25,799 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:41:25,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:41:25,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:41:25,884 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:41:25,885 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:41:25,901 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:41:25,902 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:41:25,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1079510743] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:41:25,902 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:41:25,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:41:25,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317110208] [2023-08-03 18:41:25,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:41:25,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:41:25,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:41:25,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:41:25,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:41:25,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:41:25,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 52 transitions, 179 flow. Second operand has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:41:25,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:41:25,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:41:25,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:41:59,925 INFO L124 PetriNetUnfolderBase]: 398980/498463 cut-off events. [2023-08-03 18:41:59,926 INFO L125 PetriNetUnfolderBase]: For 12886/12886 co-relation queries the response was YES. [2023-08-03 18:42:02,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007547 conditions, 498463 events. 398980/498463 cut-off events. For 12886/12886 co-relation queries the response was YES. Maximal size of possible extension queue 12048. Compared 3054674 event pairs, 180814 based on Foata normal form. 81/481047 useless extension candidates. Maximal degree in co-relation 355229. Up to 485757 conditions per place. [2023-08-03 18:42:05,404 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 57 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 18:42:05,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 71 transitions, 341 flow [2023-08-03 18:42:05,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:42:05,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:42:05,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 725 transitions. [2023-08-03 18:42:05,407 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5753968253968254 [2023-08-03 18:42:05,407 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 725 transitions. [2023-08-03 18:42:05,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 725 transitions. [2023-08-03 18:42:05,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:42:05,408 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 725 transitions. [2023-08-03 18:42:05,409 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 145.0) internal successors, (725), 5 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:05,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:05,411 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:05,412 INFO L175 Difference]: Start difference. First operand has 78 places, 52 transitions, 179 flow. Second operand 5 states and 725 transitions. [2023-08-03 18:42:05,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 71 transitions, 341 flow [2023-08-03 18:42:05,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 71 transitions, 334 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:42:05,422 INFO L231 Difference]: Finished difference. Result has 79 places, 52 transitions, 191 flow [2023-08-03 18:42:05,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=191, PETRI_PLACES=79, PETRI_TRANSITIONS=52} [2023-08-03 18:42:05,424 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 12 predicate places. [2023-08-03 18:42:05,424 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 52 transitions, 191 flow [2023-08-03 18:42:05,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 135.6) internal successors, (678), 5 states have internal predecessors, (678), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:05,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:42:05,425 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:42:05,431 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 18:42:05,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:42:05,630 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:42:05,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:42:05,630 INFO L85 PathProgramCache]: Analyzing trace with hash -382758299, now seen corresponding path program 1 times [2023-08-03 18:42:05,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:42:05,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945105645] [2023-08-03 18:42:05,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:42:05,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:42:05,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:42:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:42:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:42:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945105645] [2023-08-03 18:42:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945105645] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:42:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017823220] [2023-08-03 18:42:05,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:42:05,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:42:05,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:42:05,754 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:42:05,783 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:42:05,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:42:05,907 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:42:05,909 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:42:05,920 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:42:05,921 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:42:05,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017823220] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:42:05,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:42:05,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-03 18:42:05,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420700545] [2023-08-03 18:42:05,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:42:05,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:42:05,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:42:05,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:42:05,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:42:05,947 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 252 [2023-08-03 18:42:05,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 52 transitions, 191 flow. Second operand has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:05,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:42:05,948 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 252 [2023-08-03 18:42:05,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:42:41,470 INFO L124 PetriNetUnfolderBase]: 389476/486367 cut-off events. [2023-08-03 18:42:41,470 INFO L125 PetriNetUnfolderBase]: For 8110/8110 co-relation queries the response was YES. [2023-08-03 18:42:44,290 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983712 conditions, 486367 events. 389476/486367 cut-off events. For 8110/8110 co-relation queries the response was YES. Maximal size of possible extension queue 12097. Compared 2947385 event pairs, 316468 based on Foata normal form. 0/470814 useless extension candidates. Maximal degree in co-relation 346709. Up to 443983 conditions per place. [2023-08-03 18:42:46,467 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 56 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-03 18:42:46,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 68 transitions, 339 flow [2023-08-03 18:42:46,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:42:46,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:42:46,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 457 transitions. [2023-08-03 18:42:46,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6044973544973545 [2023-08-03 18:42:46,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 457 transitions. [2023-08-03 18:42:46,469 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 457 transitions. [2023-08-03 18:42:46,470 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:42:46,470 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 457 transitions. [2023-08-03 18:42:46,471 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.33333333333334) internal successors, (457), 3 states have internal predecessors, (457), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:46,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:46,473 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:46,473 INFO L175 Difference]: Start difference. First operand has 79 places, 52 transitions, 191 flow. Second operand 3 states and 457 transitions. [2023-08-03 18:42:46,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 68 transitions, 339 flow [2023-08-03 18:42:46,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 68 transitions, 332 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:42:46,483 INFO L231 Difference]: Finished difference. Result has 80 places, 53 transitions, 196 flow [2023-08-03 18:42:46,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=184, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=196, PETRI_PLACES=80, PETRI_TRANSITIONS=53} [2023-08-03 18:42:46,485 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-08-03 18:42:46,485 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 53 transitions, 196 flow [2023-08-03 18:42:46,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:46,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:42:46,486 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:42:46,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 18:42:46,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:42:46,690 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:42:46,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:42:46,691 INFO L85 PathProgramCache]: Analyzing trace with hash 63486213, now seen corresponding path program 1 times [2023-08-03 18:42:46,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:42:46,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466524509] [2023-08-03 18:42:46,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:42:46,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:42:46,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:42:46,775 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:42:46,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:42:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466524509] [2023-08-03 18:42:46,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466524509] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:42:46,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328118080] [2023-08-03 18:42:46,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:42:46,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:42:46,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:42:46,786 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:42:46,840 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:42:46,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:42:46,953 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:42:46,954 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:42:46,969 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:42:46,969 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:42:46,992 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:42:46,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328118080] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:42:46,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:42:46,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:42:46,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865428260] [2023-08-03 18:42:46,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:42:46,996 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:42:46,996 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:42:46,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:42:46,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:42:47,012 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:42:47,013 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 53 transitions, 196 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:42:47,013 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:42:47,013 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:42:47,013 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:43:13,774 INFO L124 PetriNetUnfolderBase]: 302806/375316 cut-off events. [2023-08-03 18:43:13,774 INFO L125 PetriNetUnfolderBase]: For 32992/32992 co-relation queries the response was YES. [2023-08-03 18:43:16,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 786334 conditions, 375316 events. 302806/375316 cut-off events. For 32992/32992 co-relation queries the response was YES. Maximal size of possible extension queue 10037. Compared 2176417 event pairs, 217912 based on Foata normal form. 27/375099 useless extension candidates. Maximal degree in co-relation 276224. Up to 365929 conditions per place. [2023-08-03 18:43:18,337 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 54 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-03 18:43:18,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 67 transitions, 334 flow [2023-08-03 18:43:18,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:43:18,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:43:18,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 587 transitions. [2023-08-03 18:43:18,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823412698412699 [2023-08-03 18:43:18,354 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 587 transitions. [2023-08-03 18:43:18,354 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 587 transitions. [2023-08-03 18:43:18,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:43:18,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 587 transitions. [2023-08-03 18:43:18,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.75) internal successors, (587), 4 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:18,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:18,364 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:18,365 INFO L175 Difference]: Start difference. First operand has 80 places, 53 transitions, 196 flow. Second operand 4 states and 587 transitions. [2023-08-03 18:43:18,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 67 transitions, 334 flow [2023-08-03 18:43:18,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 67 transitions, 332 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:43:18,680 INFO L231 Difference]: Finished difference. Result has 82 places, 52 transitions, 192 flow [2023-08-03 18:43:18,681 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=186, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=192, PETRI_PLACES=82, PETRI_TRANSITIONS=52} [2023-08-03 18:43:18,681 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 15 predicate places. [2023-08-03 18:43:18,681 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 52 transitions, 192 flow [2023-08-03 18:43:18,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:18,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:43:18,682 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:43:18,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:43:18,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:43:18,915 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:43:18,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:43:18,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1423940228, now seen corresponding path program 1 times [2023-08-03 18:43:18,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:43:18,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305916047] [2023-08-03 18:43:18,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:43:18,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:43:18,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:43:19,026 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:43:19,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:43:19,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305916047] [2023-08-03 18:43:19,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305916047] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:43:19,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617310598] [2023-08-03 18:43:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:43:19,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:43:19,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:43:19,028 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:43:19,030 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:43:19,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:43:19,152 INFO L262 TraceCheckSpWp]: Trace formula consists of 198 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:43:19,155 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:43:19,172 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:43:19,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:43:19,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617310598] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:43:19,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:43:19,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:43:19,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138428183] [2023-08-03 18:43:19,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:43:19,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:43:19,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:43:19,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:43:19,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:43:19,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:43:19,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 52 transitions, 192 flow. Second operand has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:19,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:43:19,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:43:19,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:43:45,247 INFO L124 PetriNetUnfolderBase]: 299890/370294 cut-off events. [2023-08-03 18:43:45,247 INFO L125 PetriNetUnfolderBase]: For 28603/28603 co-relation queries the response was YES. [2023-08-03 18:43:47,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 774625 conditions, 370294 events. 299890/370294 cut-off events. For 28603/28603 co-relation queries the response was YES. Maximal size of possible extension queue 10035. Compared 2120982 event pairs, 60832 based on Foata normal form. 729/371022 useless extension candidates. Maximal degree in co-relation 272159. Up to 355185 conditions per place. [2023-08-03 18:43:48,488 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 70 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 18:43:48,488 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 83 transitions, 404 flow [2023-08-03 18:43:48,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:43:48,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:43:48,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 737 transitions. [2023-08-03 18:43:48,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584920634920635 [2023-08-03 18:43:48,490 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 737 transitions. [2023-08-03 18:43:48,491 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 737 transitions. [2023-08-03 18:43:48,491 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:43:48,491 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 737 transitions. [2023-08-03 18:43:48,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 147.4) internal successors, (737), 5 states have internal predecessors, (737), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:48,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:48,494 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:48,494 INFO L175 Difference]: Start difference. First operand has 82 places, 52 transitions, 192 flow. Second operand 5 states and 737 transitions. [2023-08-03 18:43:48,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 83 transitions, 404 flow [2023-08-03 18:43:48,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 397 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:43:48,687 INFO L231 Difference]: Finished difference. Result has 83 places, 52 transitions, 204 flow [2023-08-03 18:43:48,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=181, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=204, PETRI_PLACES=83, PETRI_TRANSITIONS=52} [2023-08-03 18:43:48,687 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 16 predicate places. [2023-08-03 18:43:48,688 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 52 transitions, 204 flow [2023-08-03 18:43:48,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.6) internal successors, (683), 5 states have internal predecessors, (683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:48,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:43:48,688 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:43:48,692 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 18:43:48,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 18:43:48,889 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:43:48,889 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:43:48,889 INFO L85 PathProgramCache]: Analyzing trace with hash 302728802, now seen corresponding path program 1 times [2023-08-03 18:43:48,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:43:48,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861338481] [2023-08-03 18:43:48,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:43:48,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:43:48,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:43:48,965 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:43:48,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:43:48,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861338481] [2023-08-03 18:43:48,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861338481] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:43:48,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744189590] [2023-08-03 18:43:48,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:43:48,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:43:48,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:43:48,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:43:48,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 18:43:49,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:43:49,061 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:43:49,062 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:43:49,075 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:43:49,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:43:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:43:49,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744189590] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:43:49,092 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:43:49,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:43:49,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636147017] [2023-08-03 18:43:49,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:43:49,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:43:49,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:43:49,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:43:49,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:43:49,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:43:49,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 52 transitions, 204 flow. Second operand has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:43:49,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:43:49,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:43:49,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:44:11,253 INFO L124 PetriNetUnfolderBase]: 234604/288241 cut-off events. [2023-08-03 18:44:11,253 INFO L125 PetriNetUnfolderBase]: For 26818/26818 co-relation queries the response was YES. [2023-08-03 18:44:12,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 605219 conditions, 288241 events. 234604/288241 cut-off events. For 26818/26818 co-relation queries the response was YES. Maximal size of possible extension queue 9081. Compared 1618213 event pairs, 168238 based on Foata normal form. 243/288483 useless extension candidates. Maximal degree in co-relation 212342. Up to 275692 conditions per place. [2023-08-03 18:44:13,979 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 62 selfloop transitions, 3 changer transitions 0/74 dead transitions. [2023-08-03 18:44:13,979 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 74 transitions, 372 flow [2023-08-03 18:44:13,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:44:13,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:44:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 595 transitions. [2023-08-03 18:44:13,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5902777777777778 [2023-08-03 18:44:13,981 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 595 transitions. [2023-08-03 18:44:13,981 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 595 transitions. [2023-08-03 18:44:13,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:44:13,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 595 transitions. [2023-08-03 18:44:13,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.75) internal successors, (595), 4 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:13,984 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:13,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:13,985 INFO L175 Difference]: Start difference. First operand has 83 places, 52 transitions, 204 flow. Second operand 4 states and 595 transitions. [2023-08-03 18:44:13,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 74 transitions, 372 flow [2023-08-03 18:44:14,109 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 74 transitions, 367 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:44:14,110 INFO L231 Difference]: Finished difference. Result has 84 places, 51 transitions, 195 flow [2023-08-03 18:44:14,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=195, PETRI_PLACES=84, PETRI_TRANSITIONS=51} [2023-08-03 18:44:14,111 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 17 predicate places. [2023-08-03 18:44:14,111 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 51 transitions, 195 flow [2023-08-03 18:44:14,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.8) internal successors, (689), 5 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:14,112 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:44:14,112 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:44:14,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 18:44:14,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:44:14,317 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:44:14,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:44:14,317 INFO L85 PathProgramCache]: Analyzing trace with hash -268229202, now seen corresponding path program 1 times [2023-08-03 18:44:14,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:44:14,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926503452] [2023-08-03 18:44:14,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:14,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:44:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:14,379 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:44:14,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:44:14,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926503452] [2023-08-03 18:44:14,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926503452] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:44:14,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765586255] [2023-08-03 18:44:14,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:14,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:44:14,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:44:14,381 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:44:14,384 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 18:44:14,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:14,485 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:44:14,486 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:44:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:44:14,500 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:44:14,512 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:44:14,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765586255] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:44:14,512 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:44:14,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:44:14,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774878513] [2023-08-03 18:44:14,513 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:44:14,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:44:14,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:44:14,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:44:14,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:44:14,525 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:44:14,526 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 51 transitions, 195 flow. Second operand has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:14,526 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:44:14,526 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:44:14,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:44:32,189 INFO L124 PetriNetUnfolderBase]: 214192/263860 cut-off events. [2023-08-03 18:44:32,190 INFO L125 PetriNetUnfolderBase]: For 21310/21310 co-relation queries the response was YES. [2023-08-03 18:44:33,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 554108 conditions, 263860 events. 214192/263860 cut-off events. For 21310/21310 co-relation queries the response was YES. Maximal size of possible extension queue 8532. Compared 1445541 event pairs, 91720 based on Foata normal form. 2187/266046 useless extension candidates. Maximal degree in co-relation 194333. Up to 135913 conditions per place. [2023-08-03 18:44:34,697 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 70 selfloop transitions, 4 changer transitions 0/83 dead transitions. [2023-08-03 18:44:34,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 83 transitions, 407 flow [2023-08-03 18:44:34,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:44:34,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:44:34,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 604 transitions. [2023-08-03 18:44:34,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5992063492063492 [2023-08-03 18:44:34,699 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 604 transitions. [2023-08-03 18:44:34,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 604 transitions. [2023-08-03 18:44:34,699 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:44:34,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 604 transitions. [2023-08-03 18:44:34,700 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 151.0) internal successors, (604), 4 states have internal predecessors, (604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:34,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:34,702 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 252.0) internal successors, (1260), 5 states have internal predecessors, (1260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:34,702 INFO L175 Difference]: Start difference. First operand has 84 places, 51 transitions, 195 flow. Second operand 4 states and 604 transitions. [2023-08-03 18:44:34,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 83 transitions, 407 flow [2023-08-03 18:44:34,757 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 83 transitions, 401 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:44:34,758 INFO L231 Difference]: Finished difference. Result has 86 places, 52 transitions, 209 flow [2023-08-03 18:44:34,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=209, PETRI_PLACES=86, PETRI_TRANSITIONS=52} [2023-08-03 18:44:34,759 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-03 18:44:34,759 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 52 transitions, 209 flow [2023-08-03 18:44:34,759 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 138.0) internal successors, (690), 5 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:34,759 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:44:34,759 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:44:34,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 18:44:34,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 18:44:34,960 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:44:34,960 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:44:34,961 INFO L85 PathProgramCache]: Analyzing trace with hash 1330791065, now seen corresponding path program 1 times [2023-08-03 18:44:34,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:44:34,961 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636772907] [2023-08-03 18:44:34,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:34,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:44:34,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:35,029 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:44:35,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:44:35,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636772907] [2023-08-03 18:44:35,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636772907] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:44:35,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600132921] [2023-08-03 18:44:35,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:35,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:44:35,030 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:44:35,032 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:44:35,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 18:44:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:35,137 INFO L262 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:44:35,138 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:44:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:44:35,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:44:35,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600132921] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:44:35,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:44:35,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:44:35,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916933149] [2023-08-03 18:44:35,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:44:35,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:44:35,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:44:35,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:44:35,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:44:35,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:44:35,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 52 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:35,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:44:35,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:44:35,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:44:50,090 INFO L124 PetriNetUnfolderBase]: 179200/220120 cut-off events. [2023-08-03 18:44:50,091 INFO L125 PetriNetUnfolderBase]: For 64294/64294 co-relation queries the response was YES. [2023-08-03 18:44:51,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 491820 conditions, 220120 events. 179200/220120 cut-off events. For 64294/64294 co-relation queries the response was YES. Maximal size of possible extension queue 6644. Compared 1156891 event pairs, 8614 based on Foata normal form. 6561/226680 useless extension candidates. Maximal degree in co-relation 172112. Up to 124659 conditions per place. [2023-08-03 18:44:51,982 INFO L140 encePairwiseOnDemand]: 249/252 looper letters, 82 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 18:44:51,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 93 transitions, 457 flow [2023-08-03 18:44:51,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:44:51,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:44:51,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 748 transitions. [2023-08-03 18:44:51,984 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5936507936507937 [2023-08-03 18:44:51,984 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 748 transitions. [2023-08-03 18:44:51,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 748 transitions. [2023-08-03 18:44:51,984 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:44:51,984 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 748 transitions. [2023-08-03 18:44:51,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.6) internal successors, (748), 5 states have internal predecessors, (748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:51,986 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:51,986 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:51,986 INFO L175 Difference]: Start difference. First operand has 86 places, 52 transitions, 209 flow. Second operand 5 states and 748 transitions. [2023-08-03 18:44:51,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 93 transitions, 457 flow [2023-08-03 18:44:53,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 93 transitions, 450 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:44:53,693 INFO L231 Difference]: Finished difference. Result has 86 places, 50 transitions, 198 flow [2023-08-03 18:44:53,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=198, PETRI_PLACES=86, PETRI_TRANSITIONS=50} [2023-08-03 18:44:53,694 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-03 18:44:53,694 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 50 transitions, 198 flow [2023-08-03 18:44:53,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 137.6) internal successors, (688), 5 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:53,695 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:44:53,695 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:44:53,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 18:44:53,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 18:44:53,901 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:44:53,902 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:44:53,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1330790979, now seen corresponding path program 1 times [2023-08-03 18:44:53,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:44:53,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718277782] [2023-08-03 18:44:53,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:44:53,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:44:53,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:44:54,297 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 18:44:54,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:44:54,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718277782] [2023-08-03 18:44:54,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718277782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:44:54,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:44:54,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:44:54,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304147465] [2023-08-03 18:44:54,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:44:54,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:44:54,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:44:54,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:44:54,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:44:54,310 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 133 out of 252 [2023-08-03 18:44:54,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 50 transitions, 198 flow. Second operand has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:44:54,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:44:54,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 133 of 252 [2023-08-03 18:44:54,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:45:21,511 INFO L124 PetriNetUnfolderBase]: 325162/390706 cut-off events. [2023-08-03 18:45:21,511 INFO L125 PetriNetUnfolderBase]: For 154366/154366 co-relation queries the response was YES. [2023-08-03 18:45:23,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 870170 conditions, 390706 events. 325162/390706 cut-off events. For 154366/154366 co-relation queries the response was YES. Maximal size of possible extension queue 10179. Compared 2034448 event pairs, 75250 based on Foata normal form. 324/390867 useless extension candidates. Maximal degree in co-relation 304385. Up to 371413 conditions per place. [2023-08-03 18:45:24,835 INFO L140 encePairwiseOnDemand]: 246/252 looper letters, 64 selfloop transitions, 5 changer transitions 0/75 dead transitions. [2023-08-03 18:45:24,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 75 transitions, 433 flow [2023-08-03 18:45:24,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:45:24,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:45:24,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 463 transitions. [2023-08-03 18:45:24,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6124338624338624 [2023-08-03 18:45:24,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 463 transitions. [2023-08-03 18:45:24,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 463 transitions. [2023-08-03 18:45:24,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:45:24,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 463 transitions. [2023-08-03 18:45:24,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 154.33333333333334) internal successors, (463), 3 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:24,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:24,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:24,840 INFO L175 Difference]: Start difference. First operand has 86 places, 50 transitions, 198 flow. Second operand 3 states and 463 transitions. [2023-08-03 18:45:24,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 75 transitions, 433 flow [2023-08-03 18:45:25,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 75 transitions, 423 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:45:25,419 INFO L231 Difference]: Finished difference. Result has 86 places, 54 transitions, 226 flow [2023-08-03 18:45:25,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=226, PETRI_PLACES=86, PETRI_TRANSITIONS=54} [2023-08-03 18:45:25,419 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-03 18:45:25,419 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 54 transitions, 226 flow [2023-08-03 18:45:25,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 140.33333333333334) internal successors, (421), 3 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:25,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:45:25,420 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:45:25,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 18:45:25,420 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:45:25,420 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:45:25,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1695154093, now seen corresponding path program 1 times [2023-08-03 18:45:25,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:45:25,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561410550] [2023-08-03 18:45:25,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:45:25,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:45:25,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:45:25,549 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 18:45:25,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:45:25,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561410550] [2023-08-03 18:45:25,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561410550] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:45:25,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:45:25,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:45:25,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219503860] [2023-08-03 18:45:25,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:45:25,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:45:25,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:45:25,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:45:25,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:45:25,555 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 252 [2023-08-03 18:45:25,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 54 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:25,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:45:25,556 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 252 [2023-08-03 18:45:25,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:45:50,888 INFO L124 PetriNetUnfolderBase]: 271471/334049 cut-off events. [2023-08-03 18:45:50,888 INFO L125 PetriNetUnfolderBase]: For 97562/97562 co-relation queries the response was YES. [2023-08-03 18:45:52,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783665 conditions, 334049 events. 271471/334049 cut-off events. For 97562/97562 co-relation queries the response was YES. Maximal size of possible extension queue 10298. Compared 1862276 event pairs, 238224 based on Foata normal form. 1233/329414 useless extension candidates. Maximal degree in co-relation 783584. Up to 295665 conditions per place. [2023-08-03 18:45:54,176 INFO L140 encePairwiseOnDemand]: 248/252 looper letters, 80 selfloop transitions, 3 changer transitions 0/93 dead transitions. [2023-08-03 18:45:54,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 93 transitions, 568 flow [2023-08-03 18:45:54,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:45:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:45:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 477 transitions. [2023-08-03 18:45:54,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6309523809523809 [2023-08-03 18:45:54,177 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 477 transitions. [2023-08-03 18:45:54,177 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 477 transitions. [2023-08-03 18:45:54,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:45:54,178 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 477 transitions. [2023-08-03 18:45:54,178 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.0) internal successors, (477), 3 states have internal predecessors, (477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:54,179 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:54,179 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:54,179 INFO L175 Difference]: Start difference. First operand has 86 places, 54 transitions, 226 flow. Second operand 3 states and 477 transitions. [2023-08-03 18:45:54,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 93 transitions, 568 flow [2023-08-03 18:45:54,973 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 93 transitions, 561 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:45:54,974 INFO L231 Difference]: Finished difference. Result has 88 places, 56 transitions, 240 flow [2023-08-03 18:45:54,974 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=240, PETRI_PLACES=88, PETRI_TRANSITIONS=56} [2023-08-03 18:45:54,975 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 21 predicate places. [2023-08-03 18:45:54,975 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 56 transitions, 240 flow [2023-08-03 18:45:54,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:54,975 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:45:54,975 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:45:54,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 18:45:54,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:45:54,975 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:45:54,976 INFO L85 PathProgramCache]: Analyzing trace with hash 203209145, now seen corresponding path program 1 times [2023-08-03 18:45:54,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:45:54,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210283237] [2023-08-03 18:45:54,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:45:54,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:45:54,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:45:55,112 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2023-08-03 18:45:55,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:45:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210283237] [2023-08-03 18:45:55,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210283237] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:45:55,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575466464] [2023-08-03 18:45:55,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:45:55,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:45:55,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:45:55,117 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:45:55,144 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 18:45:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:45:55,239 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 18:45:55,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:45:55,293 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-08-03 18:45:55,293 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:45:55,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575466464] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:45:55,293 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:45:55,293 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-03 18:45:55,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661275050] [2023-08-03 18:45:55,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:45:55,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:45:55,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:45:55,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:45:55,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:45:55,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 252 [2023-08-03 18:45:55,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 56 transitions, 240 flow. Second operand has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:45:55,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:45:55,309 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 252 [2023-08-03 18:45:55,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:46:25,858 INFO L124 PetriNetUnfolderBase]: 319226/388139 cut-off events. [2023-08-03 18:46:25,859 INFO L125 PetriNetUnfolderBase]: For 214325/214325 co-relation queries the response was YES. [2023-08-03 18:46:28,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970716 conditions, 388139 events. 319226/388139 cut-off events. For 214325/214325 co-relation queries the response was YES. Maximal size of possible extension queue 12615. Compared 2134531 event pairs, 78229 based on Foata normal form. 9864/390418 useless extension candidates. Maximal degree in co-relation 624890. Up to 314617 conditions per place. [2023-08-03 18:46:29,828 INFO L140 encePairwiseOnDemand]: 241/252 looper letters, 110 selfloop transitions, 17 changer transitions 2/139 dead transitions. [2023-08-03 18:46:29,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 139 transitions, 806 flow [2023-08-03 18:46:29,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:46:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:46:29,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 732 transitions. [2023-08-03 18:46:29,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580952380952381 [2023-08-03 18:46:29,830 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 732 transitions. [2023-08-03 18:46:29,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 732 transitions. [2023-08-03 18:46:29,830 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:46:29,830 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 732 transitions. [2023-08-03 18:46:29,832 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:29,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:29,834 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 252.0) internal successors, (1512), 6 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:29,834 INFO L175 Difference]: Start difference. First operand has 88 places, 56 transitions, 240 flow. Second operand 5 states and 732 transitions. [2023-08-03 18:46:29,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 139 transitions, 806 flow [2023-08-03 18:46:29,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 139 transitions, 797 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:46:29,957 INFO L231 Difference]: Finished difference. Result has 94 places, 72 transitions, 370 flow [2023-08-03 18:46:29,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=237, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=370, PETRI_PLACES=94, PETRI_TRANSITIONS=72} [2023-08-03 18:46:29,957 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2023-08-03 18:46:29,957 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 72 transitions, 370 flow [2023-08-03 18:46:29,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 131.0) internal successors, (524), 4 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:29,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:46:29,958 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:29,962 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 18:46:30,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 18:46:30,160 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 18:46:30,161 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:46:30,161 INFO L85 PathProgramCache]: Analyzing trace with hash -855745344, now seen corresponding path program 1 times [2023-08-03 18:46:30,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:46:30,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885927460] [2023-08-03 18:46:30,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:30,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:46:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:30,314 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2023-08-03 18:46:30,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:46:30,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885927460] [2023-08-03 18:46:30,315 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885927460] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:46:30,315 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328625135] [2023-08-03 18:46:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:46:30,315 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:46:30,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:46:30,316 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:46:30,319 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 18:46:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:46:30,439 INFO L262 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 18:46:30,441 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:46:30,494 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:46:30,494 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:46:30,590 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-08-03 18:46:30,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328625135] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:46:30,591 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:46:30,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 7 [2023-08-03 18:46:30,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845917181] [2023-08-03 18:46:30,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:46:30,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 18:46:30,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:46:30,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 18:46:30,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-08-03 18:46:30,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 252 [2023-08-03 18:46:30,644 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 72 transitions, 370 flow. Second operand has 9 states, 9 states have (on average 125.33333333333333) internal successors, (1128), 9 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:46:30,644 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:46:30,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 252 [2023-08-03 18:46:30,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-03 18:46:56,091 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 18:46:56,091 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-03 18:46:57,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-08-03 18:46:57,101 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2023-08-03 18:46:57,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-03 18:46:57,955 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 18:46:57,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 18:46:57,955 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 117/252 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1019992 conditions, 316359 events (259632/316358 cut-off events. For 325193/325193 co-relation queries the response was YES. Maximal size of possible extension queue 20004. Compared 1847869 event pairs, 2914 based on Foata normal form. 1921/338033 useless extension candidates. Maximal degree in co-relation 975823. Up to 109321 conditions per place.). [2023-08-03 18:46:57,955 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 18:46:57,955 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 18:46:57,955 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-08-03 18:46:57,955 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-08-03 18:46:57,956 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:46:57,957 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:46:57,957 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:46:57,959 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:46:57 BasicIcfg [2023-08-03 18:46:57,960 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:46:57,960 INFO L158 Benchmark]: Toolchain (without parser) took 591678.70ms. Allocated memory was 530.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 476.6MB in the beginning and 9.7GB in the end (delta: -9.2GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 18:46:57,960 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory was 287.6MB in the beginning and 287.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:46:57,960 INFO L158 Benchmark]: CACSL2BoogieTranslator took 410.35ms. Allocated memory is still 530.6MB. Free memory was 476.6MB in the beginning and 455.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 18:46:57,961 INFO L158 Benchmark]: Boogie Procedure Inliner took 49.80ms. Allocated memory is still 530.6MB. Free memory was 455.6MB in the beginning and 453.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:46:57,961 INFO L158 Benchmark]: Boogie Preprocessor took 36.50ms. Allocated memory is still 530.6MB. Free memory was 453.5MB in the beginning and 451.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:46:57,961 INFO L158 Benchmark]: RCFGBuilder took 498.66ms. Allocated memory is still 530.6MB. Free memory was 451.5MB in the beginning and 435.7MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. [2023-08-03 18:46:57,961 INFO L158 Benchmark]: TraceAbstraction took 590676.88ms. Allocated memory was 530.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 435.1MB in the beginning and 9.7GB in the end (delta: -9.3GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. [2023-08-03 18:46:57,962 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 339.7MB. Free memory was 287.6MB in the beginning and 287.5MB in the end (delta: 139.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 410.35ms. Allocated memory is still 530.6MB. Free memory was 476.6MB in the beginning and 455.6MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 49.80ms. Allocated memory is still 530.6MB. Free memory was 455.6MB in the beginning and 453.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 36.50ms. Allocated memory is still 530.6MB. Free memory was 453.5MB in the beginning and 451.5MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 498.66ms. Allocated memory is still 530.6MB. Free memory was 451.5MB in the beginning and 435.7MB in the end (delta: 15.8MB). Peak memory consumption was 16.8MB. Max. memory is 16.0GB. * TraceAbstraction took 590676.88ms. Allocated memory was 530.6MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 435.1MB in the beginning and 9.7GB in the end (delta: -9.3GB). Peak memory consumption was 6.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 117 PlacesBefore, 41 PlacesAfterwards, 113 TransitionsBefore, 33 TransitionsAfterwards, 2526 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 91 TotalNumberOfCompositions, 3698 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2233, independent: 2161, independent conditional: 0, independent unconditional: 2161, dependent: 72, dependent conditional: 0, dependent unconditional: 72, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1318, independent: 1291, independent conditional: 0, independent unconditional: 1291, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2233, independent: 870, independent conditional: 0, independent unconditional: 870, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 1318, unknown conditional: 0, unknown unconditional: 1318] , Statistics on independence cache: Total cache size (in pairs): 101, Positive cache size: 89, Positive conditional cache size: 0, Positive unconditional cache size: 89, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 151 PlacesBefore, 67 PlacesAfterwards, 139 TransitionsBefore, 51 TransitionsAfterwards, 6200 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 99 TotalNumberOfCompositions, 11448 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5902, independent: 5761, independent conditional: 0, independent unconditional: 5761, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3079, independent: 3031, independent conditional: 0, independent unconditional: 3031, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5902, independent: 2730, independent conditional: 0, independent unconditional: 2730, dependent: 93, dependent conditional: 0, dependent unconditional: 93, unknown: 3079, unknown conditional: 0, unknown unconditional: 3079] , Statistics on independence cache: Total cache size (in pairs): 264, Positive cache size: 245, Positive conditional cache size: 0, Positive unconditional cache size: 245, Negative cache size: 19, Negative conditional cache size: 0, Negative unconditional cache size: 19, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 18]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 117/252 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1019992 conditions, 316359 events (259632/316358 cut-off events. For 325193/325193 co-relation queries the response was YES. Maximal size of possible extension queue 20004. Compared 1847869 event pairs, 2914 based on Foata normal form. 1921/338033 useless extension candidates. Maximal degree in co-relation 975823. Up to 109321 conditions per place.). - TimeoutResultAtElement [Line: 789]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 117/252 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1019992 conditions, 316359 events (259632/316358 cut-off events. For 325193/325193 co-relation queries the response was YES. Maximal size of possible extension queue 20004. Compared 1847869 event pairs, 2914 based on Foata normal form. 1921/338033 useless extension candidates. Maximal degree in co-relation 975823. Up to 109321 conditions per place.). - TimeoutResultAtElement [Line: 793]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 117/252 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1019992 conditions, 316359 events (259632/316358 cut-off events. For 325193/325193 co-relation queries the response was YES. Maximal size of possible extension queue 20004. Compared 1847869 event pairs, 2914 based on Foata normal form. 1921/338033 useless extension candidates. Maximal degree in co-relation 975823. Up to 109321 conditions per place.). - TimeoutResultAtElement [Line: 795]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 117/252 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1019992 conditions, 316359 events (259632/316358 cut-off events. For 325193/325193 co-relation queries the response was YES. Maximal size of possible extension queue 20004. Compared 1847869 event pairs, 2914 based on Foata normal form. 1921/338033 useless extension candidates. Maximal degree in co-relation 975823. Up to 109321 conditions per place.). - TimeoutResultAtElement [Line: 791]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (9states, 117/252 universal loopers) in iteration 16,while PetriNetUnfolder was constructing finite prefix that currently has 1019992 conditions, 316359 events (259632/316358 cut-off events. For 325193/325193 co-relation queries the response was YES. Maximal size of possible extension queue 20004. Compared 1847869 event pairs, 2914 based on Foata normal form. 1921/338033 useless extension candidates. Maximal degree in co-relation 975823. Up to 109321 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 148 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58 IncrementalHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 58 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 13 procedures, 174 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 587.1s, OverallIterations: 16, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 577.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1317 SdHoareTripleChecker+Valid, 1.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1198 mSDsluCounter, 134 SdHoareTripleChecker+Invalid, 1.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 105 mSDsCounter, 132 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2146 IncrementalHoareTripleChecker+Invalid, 2278 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 132 mSolverCounterUnsat, 29 mSDtfsCounter, 2146 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 533 GetRequests, 451 SyntacticMatches, 8 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 241 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=370occurred in iteration=15, InterpolantAutomatonStates: 59, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 743 NumberOfCodeBlocks, 743 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 855 ConstructedInterpolants, 0 QuantifiedInterpolants, 1704 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2454 ConjunctsInSsa, 51 ConjunctsInUnsatCore, 34 InterpolantComputations, 11 PerfectInterpolantSequences, 449/497 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown