/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 02:57:02,354 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 02:57:02,434 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 02:57:02,442 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 02:57:02,442 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 02:57:02,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 02:57:02,443 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 02:57:02,470 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 02:57:02,470 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 02:57:02,475 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 02:57:02,476 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 02:57:02,476 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 02:57:02,477 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 02:57:02,479 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 02:57:02,479 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 02:57:02,479 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 02:57:02,479 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 02:57:02,479 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 02:57:02,480 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 02:57:02,480 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 02:57:02,480 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 02:57:02,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 02:57:02,481 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 02:57:02,481 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 02:57:02,481 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 02:57:02,481 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 02:57:02,482 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 02:57:02,482 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 02:57:02,482 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 02:57:02,483 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 02:57:02,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:57:02,484 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 02:57:02,484 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 02:57:02,484 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 02:57:02,484 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 02:57:02,484 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 02:57:02,485 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 02:57:02,485 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 02:57:02,485 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 02:57:02,485 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 02:57:02,485 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 02:57:02,485 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 02:57:02,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 02:57:02,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 02:57:02,740 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 02:57:02,741 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 02:57:02,743 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 02:57:02,744 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c [2023-08-04 02:57:03,967 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 02:57:04,162 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 02:57:04,162 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c [2023-08-04 02:57:04,170 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a429d13b2/24746eb68f504f72bfb0f876ed9f87e7/FLAG0330791f4 [2023-08-04 02:57:04,183 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a429d13b2/24746eb68f504f72bfb0f876ed9f87e7 [2023-08-04 02:57:04,186 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 02:57:04,188 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 02:57:04,189 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 02:57:04,189 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 02:57:04,192 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 02:57:04,192 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,193 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7041885a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04, skipping insertion in model container [2023-08-04 02:57:04,193 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,214 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 02:57:04,420 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c[3667,3680] [2023-08-04 02:57:04,424 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:57:04,437 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 02:57:04,477 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-horseshoe.wvr_bound2.c[3667,3680] [2023-08-04 02:57:04,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:57:04,495 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:57:04,495 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:57:04,501 INFO L206 MainTranslator]: Completed translation [2023-08-04 02:57:04,502 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04 WrapperNode [2023-08-04 02:57:04,502 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 02:57:04,504 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 02:57:04,504 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 02:57:04,504 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 02:57:04,510 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,525 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,558 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 300 [2023-08-04 02:57:04,558 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 02:57:04,559 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 02:57:04,559 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 02:57:04,559 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 02:57:04,566 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,567 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,577 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,577 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,584 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,588 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,604 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,605 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,608 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 02:57:04,609 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 02:57:04,609 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 02:57:04,609 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 02:57:04,609 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (1/1) ... [2023-08-04 02:57:04,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:57:04,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:57:04,650 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 02:57:04,672 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 02:57:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 02:57:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 02:57:04,695 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 02:57:04,696 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 02:57:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 02:57:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 02:57:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 02:57:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 02:57:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 02:57:04,697 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 02:57:04,697 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 02:57:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 02:57:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 02:57:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 02:57:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 02:57:04,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 02:57:04,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 02:57:04,700 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 02:57:04,819 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 02:57:04,821 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 02:57:05,263 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 02:57:05,340 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 02:57:05,340 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-04 02:57:05,342 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:57:05 BoogieIcfgContainer [2023-08-04 02:57:05,342 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 02:57:05,344 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 02:57:05,344 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 02:57:05,347 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 02:57:05,347 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 02:57:04" (1/3) ... [2023-08-04 02:57:05,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616572f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:57:05, skipping insertion in model container [2023-08-04 02:57:05,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:57:04" (2/3) ... [2023-08-04 02:57:05,348 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@616572f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:57:05, skipping insertion in model container [2023-08-04 02:57:05,348 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:57:05" (3/3) ... [2023-08-04 02:57:05,349 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-horseshoe.wvr_bound2.c [2023-08-04 02:57:05,354 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 02:57:05,360 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 02:57:05,360 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 02:57:05,360 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 02:57:05,432 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 02:57:05,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 249 transitions, 540 flow [2023-08-04 02:57:05,676 INFO L124 PetriNetUnfolderBase]: 111/718 cut-off events. [2023-08-04 02:57:05,676 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:57:05,686 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 718 events. 111/718 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3261 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2023-08-04 02:57:05,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 249 transitions, 540 flow [2023-08-04 02:57:05,698 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 249 transitions, 540 flow [2023-08-04 02:57:05,702 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:57:05,715 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 249 transitions, 540 flow [2023-08-04 02:57:05,719 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 249 transitions, 540 flow [2023-08-04 02:57:05,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 249 transitions, 540 flow [2023-08-04 02:57:05,823 INFO L124 PetriNetUnfolderBase]: 111/718 cut-off events. [2023-08-04 02:57:05,823 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:57:05,828 INFO L83 FinitePrefix]: Finished finitePrefix Result has 779 conditions, 718 events. 111/718 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 3261 event pairs, 0 based on Foata normal form. 0/597 useless extension candidates. Maximal degree in co-relation 431. Up to 16 conditions per place. [2023-08-04 02:57:05,837 INFO L119 LiptonReduction]: Number of co-enabled transitions 5638 [2023-08-04 02:57:12,582 INFO L134 LiptonReduction]: Checked pairs total: 12408 [2023-08-04 02:57:12,582 INFO L136 LiptonReduction]: Total number of compositions: 230 [2023-08-04 02:57:12,609 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:57:12,615 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;@7bb876a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:57:12,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:57:12,622 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:57:12,622 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2023-08-04 02:57:12,622 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 02:57:12,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:57:12,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-04 02:57:12,624 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:57:12,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:57:12,630 INFO L85 PathProgramCache]: Analyzing trace with hash 860637486, now seen corresponding path program 1 times [2023-08-04 02:57:12,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:57:12,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874564677] [2023-08-04 02:57:12,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:57:12,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:57:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:57:12,835 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 02:57:12,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:57:12,911 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 02:57:12,913 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 02:57:12,914 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:57:12,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:57:12,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:57:12,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 02:57:12,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 02:57:12,918 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 02:57:12,919 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 02:57:12,919 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 02:57:12,949 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 02:57:12,953 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 02:57:13,654 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 02:57:13,654 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:57:13,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 4212 events. 919/4212 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33128 event pairs, 11 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 2523. Up to 192 conditions per place. [2023-08-04 02:57:13,695 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 02:57:13,725 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 293 transitions, 676 flow [2023-08-04 02:57:13,725 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:57:13,725 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 02:57:13,726 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 02:57:13,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 02:57:14,283 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 02:57:14,283 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:57:14,313 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 4212 events. 919/4212 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33128 event pairs, 11 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 2523. Up to 192 conditions per place. [2023-08-04 02:57:14,383 INFO L119 LiptonReduction]: Number of co-enabled transitions 14672 [2023-08-04 02:57:20,553 INFO L134 LiptonReduction]: Checked pairs total: 38800 [2023-08-04 02:57:20,554 INFO L136 LiptonReduction]: Total number of compositions: 258 [2023-08-04 02:57:20,556 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:57:20,557 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;@7bb876a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:57:20,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:57:20,567 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:57:20,567 INFO L124 PetriNetUnfolderBase]: 24/136 cut-off events. [2023-08-04 02:57:20,567 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 02:57:20,567 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:57:20,568 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 02:57:20,568 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:57:20,568 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:57:20,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1785257585, now seen corresponding path program 1 times [2023-08-04 02:57:20,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:57:20,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693432799] [2023-08-04 02:57:20,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:57:20,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:57:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:57:20,756 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 02:57:20,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:57:20,756 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693432799] [2023-08-04 02:57:20,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693432799] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:57:20,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996982305] [2023-08-04 02:57:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:57:20,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:57:20,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:57:20,765 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:57:20,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 02:57:20,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:57:20,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:57:20,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:57:20,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 02:57:20,961 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:57:20,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [996982305] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:57:20,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:57:20,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 02:57:20,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443891664] [2023-08-04 02:57:20,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:57:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:57:20,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:57:21,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:57:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:57:21,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-04 02:57:21,034 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 260 flow. Second operand has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:57:21,035 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:57:21,035 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-04 02:57:21,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:58:45,095 INFO L124 PetriNetUnfolderBase]: 871137/1063964 cut-off events. [2023-08-04 02:58:45,095 INFO L125 PetriNetUnfolderBase]: For 107176/107176 co-relation queries the response was YES. [2023-08-04 02:58:48,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2154072 conditions, 1063964 events. 871137/1063964 cut-off events. For 107176/107176 co-relation queries the response was YES. Maximal size of possible extension queue 20771. Compared 6346856 event pairs, 432616 based on Foata normal form. 0/738692 useless extension candidates. Maximal degree in co-relation 692399. Up to 1029967 conditions per place. [2023-08-04 02:58:49,647 INFO L140 encePairwiseOnDemand]: 542/551 looper letters, 42 selfloop transitions, 5 changer transitions 31/89 dead transitions. [2023-08-04 02:58:49,648 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 414 flow [2023-08-04 02:58:49,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:58:49,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:58:49,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1226 transitions. [2023-08-04 02:58:49,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44500907441016335 [2023-08-04 02:58:49,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1226 transitions. [2023-08-04 02:58:49,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1226 transitions. [2023-08-04 02:58:49,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:58:49,683 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1226 transitions. [2023-08-04 02:58:49,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 245.2) internal successors, (1226), 5 states have internal predecessors, (1226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:58:49,701 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:58:49,702 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:58:49,704 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 260 flow. Second operand 5 states and 1226 transitions. [2023-08-04 02:58:49,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 414 flow [2023-08-04 02:58:49,864 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 89 transitions, 406 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:58:49,866 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 149 flow [2023-08-04 02:58:49,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=149, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2023-08-04 02:58:49,871 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-08-04 02:58:49,871 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 149 flow [2023-08-04 02:58:49,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 231.0) internal successors, (1155), 5 states have internal predecessors, (1155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:58:49,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:58:49,872 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:58:49,882 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 02:58:50,078 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:58:50,079 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:58:50,079 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:58:50,079 INFO L85 PathProgramCache]: Analyzing trace with hash 514418785, now seen corresponding path program 1 times [2023-08-04 02:58:50,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:58:50,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037498400] [2023-08-04 02:58:50,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:58:50,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:58:50,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:58:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:58:50,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:58:50,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037498400] [2023-08-04 02:58:50,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037498400] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:58:50,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:58:50,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:58:50,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78794146] [2023-08-04 02:58:50,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:58:50,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:58:50,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:58:50,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:58:50,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:58:50,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-04 02:58:50,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 149 flow. Second operand has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:58:50,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:58:50,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-04 02:58:50,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:01,738 INFO L124 PetriNetUnfolderBase]: 130078/155493 cut-off events. [2023-08-04 02:59:01,739 INFO L125 PetriNetUnfolderBase]: For 5347/5347 co-relation queries the response was YES. [2023-08-04 02:59:02,285 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315700 conditions, 155493 events. 130078/155493 cut-off events. For 5347/5347 co-relation queries the response was YES. Maximal size of possible extension queue 3328. Compared 715472 event pairs, 76369 based on Foata normal form. 1/109261 useless extension candidates. Maximal degree in co-relation 90682. Up to 153621 conditions per place. [2023-08-04 02:59:03,123 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 40 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 02:59:03,123 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 236 flow [2023-08-04 02:59:03,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:59:03,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:59:03,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 732 transitions. [2023-08-04 02:59:03,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44283121597096187 [2023-08-04 02:59:03,147 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 732 transitions. [2023-08-04 02:59:03,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 732 transitions. [2023-08-04 02:59:03,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:03,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 732 transitions. [2023-08-04 02:59:03,149 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 244.0) internal successors, (732), 3 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) [2023-08-04 02:59:03,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:03,153 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:03,160 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 149 flow. Second operand 3 states and 732 transitions. [2023-08-04 02:59:03,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 236 flow [2023-08-04 02:59:03,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 53 transitions, 231 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 02:59:03,167 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 143 flow [2023-08-04 02:59:03,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=143, PETRI_PLACES=57, PETRI_TRANSITIONS=50} [2023-08-04 02:59:03,177 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-08-04 02:59:03,177 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 143 flow [2023-08-04 02:59:03,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 232.66666666666666) internal successors, (698), 3 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:03,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:03,178 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:03,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 02:59:03,178 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:59:03,178 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:03,178 INFO L85 PathProgramCache]: Analyzing trace with hash -456727409, now seen corresponding path program 1 times [2023-08-04 02:59:03,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:03,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132251137] [2023-08-04 02:59:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:03,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:03,309 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:59:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:03,311 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132251137] [2023-08-04 02:59:03,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132251137] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:59:03,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1332156370] [2023-08-04 02:59:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:59:03,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:59:03,326 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:59:03,377 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 02:59:03,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:03,510 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 02:59:03,511 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:59:03,527 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:59:03,527 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:59:03,557 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 02:59:03,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1332156370] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:59:03,557 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:59:03,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 02:59:03,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889871605] [2023-08-04 02:59:03,558 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:59:03,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:59:03,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:03,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:59:03,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:59:03,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-04 02:59:03,581 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 50 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:03,581 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:03,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-04 02:59:03,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:12,206 INFO L124 PetriNetUnfolderBase]: 103449/122519 cut-off events. [2023-08-04 02:59:12,206 INFO L125 PetriNetUnfolderBase]: For 3596/3596 co-relation queries the response was YES. [2023-08-04 02:59:12,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248159 conditions, 122519 events. 103449/122519 cut-off events. For 3596/3596 co-relation queries the response was YES. Maximal size of possible extension queue 2639. Compared 529473 event pairs, 48453 based on Foata normal form. 3/84901 useless extension candidates. Maximal degree in co-relation 181111. Up to 121082 conditions per place. [2023-08-04 02:59:12,964 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 42 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-08-04 02:59:12,964 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 244 flow [2023-08-04 02:59:12,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 02:59:12,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 02:59:12,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 962 transitions. [2023-08-04 02:59:12,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4364791288566243 [2023-08-04 02:59:12,966 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 962 transitions. [2023-08-04 02:59:12,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 962 transitions. [2023-08-04 02:59:12,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:12,967 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 962 transitions. [2023-08-04 02:59:12,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.5) internal successors, (962), 4 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:12,972 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:12,973 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:12,974 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 143 flow. Second operand 4 states and 962 transitions. [2023-08-04 02:59:12,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 244 flow [2023-08-04 02:59:12,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 240 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:59:12,977 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 140 flow [2023-08-04 02:59:12,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=58, PETRI_TRANSITIONS=49} [2023-08-04 02:59:12,977 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-04 02:59:12,978 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 140 flow [2023-08-04 02:59:12,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:12,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:12,979 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:12,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 02:59:13,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 02:59:13,184 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:59:13,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:13,184 INFO L85 PathProgramCache]: Analyzing trace with hash 204235612, now seen corresponding path program 1 times [2023-08-04 02:59:13,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:13,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828300473] [2023-08-04 02:59:13,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:13,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:13,306 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 02:59:13,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:13,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828300473] [2023-08-04 02:59:13,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828300473] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:59:13,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852554664] [2023-08-04 02:59:13,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:13,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:59:13,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:59:13,308 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:59:13,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 02:59:13,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:13,407 INFO L262 TraceCheckSpWp]: Trace formula consists of 225 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:59:13,408 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:59:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 02:59:13,432 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:59:13,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852554664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:59:13,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:59:13,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 02:59:13,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423151116] [2023-08-04 02:59:13,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:59:13,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:59:13,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:13,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:59:13,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:59:13,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-04 02:59:13,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 49 transitions, 140 flow. Second operand has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:13,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:13,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-04 02:59:13,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:21,687 INFO L124 PetriNetUnfolderBase]: 97491/117659 cut-off events. [2023-08-04 02:59:21,687 INFO L125 PetriNetUnfolderBase]: For 3013/3013 co-relation queries the response was YES. [2023-08-04 02:59:22,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236897 conditions, 117659 events. 97491/117659 cut-off events. For 3013/3013 co-relation queries the response was YES. Maximal size of possible extension queue 2687. Compared 554059 event pairs, 18583 based on Foata normal form. 0/82216 useless extension candidates. Maximal degree in co-relation 86343. Up to 112545 conditions per place. [2023-08-04 02:59:22,387 INFO L140 encePairwiseOnDemand]: 547/551 looper letters, 61 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2023-08-04 02:59:22,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 324 flow [2023-08-04 02:59:22,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:59:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:59:22,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1211 transitions. [2023-08-04 02:59:22,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4395644283121597 [2023-08-04 02:59:22,546 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1211 transitions. [2023-08-04 02:59:22,546 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1211 transitions. [2023-08-04 02:59:22,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:22,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1211 transitions. [2023-08-04 02:59:22,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 242.2) internal successors, (1211), 5 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:22,554 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:22,555 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:22,555 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 140 flow. Second operand 5 states and 1211 transitions. [2023-08-04 02:59:22,555 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 324 flow [2023-08-04 02:59:22,558 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 76 transitions, 317 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 02:59:22,559 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 152 flow [2023-08-04 02:59:22,559 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=129, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=58, PETRI_TRANSITIONS=51} [2023-08-04 02:59:22,559 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-04 02:59:22,560 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 152 flow [2023-08-04 02:59:22,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 232.0) internal successors, (1160), 5 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:22,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:22,561 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:22,571 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 02:59:22,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:59:22,766 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:59:22,766 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:22,766 INFO L85 PathProgramCache]: Analyzing trace with hash -439079910, now seen corresponding path program 1 times [2023-08-04 02:59:22,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:22,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442832078] [2023-08-04 02:59:22,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:22,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:22,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:22,822 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:59:22,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:22,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442832078] [2023-08-04 02:59:22,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442832078] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:59:22,825 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:59:22,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:59:22,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602941010] [2023-08-04 02:59:22,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:59:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:59:22,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:22,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:59:22,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:59:22,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 551 [2023-08-04 02:59:22,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 51 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:22,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:22,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 551 [2023-08-04 02:59:22,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:30,849 INFO L124 PetriNetUnfolderBase]: 95010/114719 cut-off events. [2023-08-04 02:59:30,849 INFO L125 PetriNetUnfolderBase]: For 4011/4011 co-relation queries the response was YES. [2023-08-04 02:59:31,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231458 conditions, 114719 events. 95010/114719 cut-off events. For 4011/4011 co-relation queries the response was YES. Maximal size of possible extension queue 2716. Compared 536323 event pairs, 50893 based on Foata normal form. 9/80295 useless extension candidates. Maximal degree in co-relation 84287. Up to 110923 conditions per place. [2023-08-04 02:59:31,470 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 47 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-04 02:59:31,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 265 flow [2023-08-04 02:59:31,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:59:31,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:59:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-04 02:59:31,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44646098003629764 [2023-08-04 02:59:31,473 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-04 02:59:31,473 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-04 02:59:31,473 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:31,474 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-04 02:59:31,475 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 246.0) internal successors, (738), 3 states have internal predecessors, (738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:31,478 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:31,479 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 551.0) internal successors, (2204), 4 states have internal predecessors, (2204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:31,479 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 152 flow. Second operand 3 states and 738 transitions. [2023-08-04 02:59:31,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 265 flow [2023-08-04 02:59:31,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 59 transitions, 264 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:59:31,481 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 150 flow [2023-08-04 02:59:31,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=59, PETRI_TRANSITIONS=50} [2023-08-04 02:59:31,482 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-04 02:59:31,482 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 150 flow [2023-08-04 02:59:31,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.33333333333334) internal successors, (703), 3 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:31,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:31,482 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:31,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 02:59:31,483 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:59:31,483 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:31,483 INFO L85 PathProgramCache]: Analyzing trace with hash 9312592, now seen corresponding path program 1 times [2023-08-04 02:59:31,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:31,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121815031] [2023-08-04 02:59:31,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:31,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:31,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:31,534 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:59:31,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121815031] [2023-08-04 02:59:31,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121815031] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:59:31,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755795817] [2023-08-04 02:59:31,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:31,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:59:31,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:59:31,536 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 02:59:31,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 02:59:31,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:31,633 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 02:59:31,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:59:31,656 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:59:31,656 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:59:31,674 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 02:59:31,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755795817] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:59:31,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:59:31,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 02:59:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986719576] [2023-08-04 02:59:31,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:59:31,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:59:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:31,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:59:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:59:31,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-04 02:59:31,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 50 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:31,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:31,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-04 02:59:31,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:38,546 INFO L124 PetriNetUnfolderBase]: 81222/97844 cut-off events. [2023-08-04 02:59:38,546 INFO L125 PetriNetUnfolderBase]: For 3156/3156 co-relation queries the response was YES. [2023-08-04 02:59:38,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197312 conditions, 97844 events. 81222/97844 cut-off events. For 3156/3156 co-relation queries the response was YES. Maximal size of possible extension queue 2659. Compared 449571 event pairs, 32647 based on Foata normal form. 45/68712 useless extension candidates. Maximal degree in co-relation 71717. Up to 93124 conditions per place. [2023-08-04 02:59:39,254 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 57 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-04 02:59:39,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 309 flow [2023-08-04 02:59:39,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 02:59:39,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 02:59:39,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 976 transitions. [2023-08-04 02:59:39,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44283121597096187 [2023-08-04 02:59:39,257 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 976 transitions. [2023-08-04 02:59:39,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 976 transitions. [2023-08-04 02:59:39,257 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:39,257 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 976 transitions. [2023-08-04 02:59:39,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:39,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:39,262 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 551.0) internal successors, (2755), 5 states have internal predecessors, (2755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:39,262 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 150 flow. Second operand 4 states and 976 transitions. [2023-08-04 02:59:39,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 309 flow [2023-08-04 02:59:39,263 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 70 transitions, 305 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:59:39,264 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 147 flow [2023-08-04 02:59:39,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=60, PETRI_TRANSITIONS=49} [2023-08-04 02:59:39,265 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-04 02:59:39,265 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 147 flow [2023-08-04 02:59:39,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:39,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:39,266 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:39,271 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 02:59:39,469 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 [2023-08-04 02:59:39,469 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:59:39,469 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:39,469 INFO L85 PathProgramCache]: Analyzing trace with hash 123749669, now seen corresponding path program 1 times [2023-08-04 02:59:39,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:39,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396041886] [2023-08-04 02:59:39,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:39,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:39,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 02:59:39,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396041886] [2023-08-04 02:59:39,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396041886] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:59:39,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1640730298] [2023-08-04 02:59:39,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:39,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:59:39,556 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:59:39,557 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) [2023-08-04 02:59:39,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 02:59:39,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:39,681 INFO L262 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:59:39,682 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:59:39,701 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 02:59:39,701 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:59:39,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1640730298] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:59:39,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:59:39,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 02:59:39,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405821406] [2023-08-04 02:59:39,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:59:39,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:59:39,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:39,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:59:39,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:59:39,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 551 [2023-08-04 02:59:39,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 49 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:39,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:39,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 551 [2023-08-04 02:59:39,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:59:44,651 INFO L124 PetriNetUnfolderBase]: 58551/70475 cut-off events. [2023-08-04 02:59:44,651 INFO L125 PetriNetUnfolderBase]: For 2940/2940 co-relation queries the response was YES. [2023-08-04 02:59:44,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143177 conditions, 70475 events. 58551/70475 cut-off events. For 2940/2940 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 307530 event pairs, 2212 based on Foata normal form. 3600/52422 useless extension candidates. Maximal degree in co-relation 52160. Up to 32175 conditions per place. [2023-08-04 02:59:44,875 INFO L140 encePairwiseOnDemand]: 548/551 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2023-08-04 02:59:44,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 409 flow [2023-08-04 02:59:44,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:59:44,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:59:44,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1230 transitions. [2023-08-04 02:59:44,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44646098003629764 [2023-08-04 02:59:44,879 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1230 transitions. [2023-08-04 02:59:44,879 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1230 transitions. [2023-08-04 02:59:44,879 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:59:44,879 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1230 transitions. [2023-08-04 02:59:44,881 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 246.0) internal successors, (1230), 5 states have internal predecessors, (1230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:44,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:44,885 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 551.0) internal successors, (3306), 6 states have internal predecessors, (3306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:44,885 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 147 flow. Second operand 5 states and 1230 transitions. [2023-08-04 02:59:44,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 409 flow [2023-08-04 02:59:44,993 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 95 transitions, 402 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 02:59:44,994 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-04 02:59:44,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=551, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=59, PETRI_TRANSITIONS=0} [2023-08-04 02:59:44,995 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-04 02:59:44,995 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-04 02:59:44,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 233.0) internal successors, (1165), 5 states have internal predecessors, (1165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:44,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:59:44,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:59:44,996 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:59:45,001 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-04 02:59:45,200 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 [2023-08-04 02:59:45,201 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:45,201 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 02:59:45,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 02:59:45,879 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 02:59:45,879 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:59:45,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 4212 events. 919/4212 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33128 event pairs, 11 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 2523. Up to 192 conditions per place. [2023-08-04 02:59:45,895 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 02:59:45,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 293 transitions, 676 flow [2023-08-04 02:59:45,910 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:59:45,910 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 02:59:45,910 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 02:59:45,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 02:59:46,297 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 02:59:46,297 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:59:46,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4886 conditions, 4212 events. 919/4212 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 33128 event pairs, 11 based on Foata normal form. 0/3537 useless extension candidates. Maximal degree in co-relation 2523. Up to 192 conditions per place. [2023-08-04 02:59:46,394 INFO L119 LiptonReduction]: Number of co-enabled transitions 14672 [2023-08-04 02:59:52,576 INFO L134 LiptonReduction]: Checked pairs total: 38569 [2023-08-04 02:59:52,576 INFO L136 LiptonReduction]: Total number of compositions: 257 [2023-08-04 02:59:52,578 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 02:59:52,578 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;@7bb876a9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:59:52,578 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 02:59:52,581 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:59:52,582 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-04 02:59:52,582 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 02:59:52,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:59:52,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:59:52,582 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 02:59:52,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:59:52,582 INFO L85 PathProgramCache]: Analyzing trace with hash -555050178, now seen corresponding path program 1 times [2023-08-04 02:59:52,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:59:52,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928338338] [2023-08-04 02:59:52,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:59:52,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:59:52,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:59:52,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 02:59:52,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:59:52,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928338338] [2023-08-04 02:59:52,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928338338] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:59:52,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:59:52,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:59:52,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825441232] [2023-08-04 02:59:52,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:59:52,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:59:52,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:59:52,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:59:52,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:59:52,624 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 550 [2023-08-04 02:59:52,625 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 85 transitions, 260 flow. Second operand has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 02:59:52,625 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:59:52,625 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 550 [2023-08-04 02:59:52,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:01:20,039 INFO L124 PetriNetUnfolderBase]: 863260/1046375 cut-off events. [2023-08-04 03:01:20,039 INFO L125 PetriNetUnfolderBase]: For 114456/114456 co-relation queries the response was YES. [2023-08-04 03:01:23,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126254 conditions, 1046375 events. 863260/1046375 cut-off events. For 114456/114456 co-relation queries the response was YES. Maximal size of possible extension queue 19831. Compared 6041245 event pairs, 506238 based on Foata normal form. 0/723500 useless extension candidates. Maximal degree in co-relation 686954. Up to 1020030 conditions per place. [2023-08-04 03:01:26,969 INFO L140 encePairwiseOnDemand]: 542/550 looper letters, 67 selfloop transitions, 2 changer transitions 3/84 dead transitions. [2023-08-04 03:01:26,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 396 flow [2023-08-04 03:01:26,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:01:26,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:01:26,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-08-04 03:01:26,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4636363636363636 [2023-08-04 03:01:26,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-08-04 03:01:26,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-08-04 03:01:26,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:01:26,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-08-04 03:01:26,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.0) internal successors, (765), 3 states have internal predecessors, (765), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:01:26,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:01:26,978 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:01:26,978 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 260 flow. Second operand 3 states and 765 transitions. [2023-08-04 03:01:26,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 396 flow [2023-08-04 03:01:27,048 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 84 transitions, 396 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:01:27,049 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 244 flow [2023-08-04 03:01:27,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=70, PETRI_TRANSITIONS=78} [2023-08-04 03:01:27,050 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-04 03:01:27,050 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 244 flow [2023-08-04 03:01:27,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 233.0) internal successors, (699), 3 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:01:27,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:01:27,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:01:27,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 03:01:27,051 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:01:27,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:01:27,051 INFO L85 PathProgramCache]: Analyzing trace with hash 686000504, now seen corresponding path program 1 times [2023-08-04 03:01:27,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:01:27,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887794222] [2023-08-04 03:01:27,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:01:27,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:01:27,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:01:27,098 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 03:01:27,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:01:27,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887794222] [2023-08-04 03:01:27,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887794222] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:01:27,099 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117132324] [2023-08-04 03:01:27,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:01:27,099 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:01:27,099 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:01:27,102 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) [2023-08-04 03:01:27,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 03:01:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:01:27,197 INFO L262 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:01:27,199 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:01:27,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:01:27,206 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:01:27,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117132324] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:01:27,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:01:27,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:01:27,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67720562] [2023-08-04 03:01:27,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:01:27,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:01:27,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:01:27,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:01:27,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:01:27,217 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 550 [2023-08-04 03:01:27,218 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 78 transitions, 244 flow. Second operand has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:01:27,218 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:01:27,218 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 550 [2023-08-04 03:01:27,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:02:48,841 INFO L124 PetriNetUnfolderBase]: 854062/1036254 cut-off events. [2023-08-04 03:02:48,841 INFO L125 PetriNetUnfolderBase]: For 111558/111558 co-relation queries the response was YES. [2023-08-04 03:02:52,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103948 conditions, 1036254 events. 854062/1036254 cut-off events. For 111558/111558 co-relation queries the response was YES. Maximal size of possible extension queue 20070. Compared 6002263 event pairs, 462054 based on Foata normal form. 0/716447 useless extension candidates. Maximal degree in co-relation 2103908. Up to 1008875 conditions per place. [2023-08-04 03:02:56,222 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 74 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-04 03:02:56,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 416 flow [2023-08-04 03:02:56,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:02:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:02:56,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-04 03:02:56,224 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46424242424242423 [2023-08-04 03:02:56,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-04 03:02:56,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-04 03:02:56,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:02:56,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-04 03:02:56,226 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 255.33333333333334) internal successors, (766), 3 states have internal predecessors, (766), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:02:56,228 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:02:56,229 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:02:56,229 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 244 flow. Second operand 3 states and 766 transitions. [2023-08-04 03:02:56,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 416 flow [2023-08-04 03:02:56,671 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 88 transitions, 402 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 03:02:56,672 INFO L231 Difference]: Finished difference. Result has 66 places, 79 transitions, 242 flow [2023-08-04 03:02:56,672 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=242, PETRI_PLACES=66, PETRI_TRANSITIONS=79} [2023-08-04 03:02:56,673 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-04 03:02:56,673 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 79 transitions, 242 flow [2023-08-04 03:02:56,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:02:56,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:02:56,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:02:56,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-04 03:02:56,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:02:56,874 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:02:56,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:02:56,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1975252525, now seen corresponding path program 1 times [2023-08-04 03:02:56,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:02:56,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329034803] [2023-08-04 03:02:56,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:02:56,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:02:56,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:02:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 03:02:56,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:02:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329034803] [2023-08-04 03:02:56,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329034803] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:02:56,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267483532] [2023-08-04 03:02:56,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:02:56,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:02:56,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:02:56,916 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) [2023-08-04 03:02:56,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 03:02:57,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:02:57,163 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:02:57,164 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:02:57,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:02:57,169 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:02:57,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267483532] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:02:57,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:02:57,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:02:57,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429292934] [2023-08-04 03:02:57,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:02:57,170 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:02:57,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:02:57,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:02:57,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:02:57,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 550 [2023-08-04 03:02:57,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 79 transitions, 242 flow. Second operand has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:02:57,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:02:57,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 550 [2023-08-04 03:02:57,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:04:16,805 INFO L124 PetriNetUnfolderBase]: 854586/1044176 cut-off events. [2023-08-04 03:04:16,806 INFO L125 PetriNetUnfolderBase]: For 57349/57349 co-relation queries the response was YES. [2023-08-04 03:04:20,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111748 conditions, 1044176 events. 854586/1044176 cut-off events. For 57349/57349 co-relation queries the response was YES. Maximal size of possible extension queue 21236. Compared 6264342 event pairs, 474994 based on Foata normal form. 0/723916 useless extension candidates. Maximal degree in co-relation 721377. Up to 1000105 conditions per place. [2023-08-04 03:04:24,195 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 82 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-04 03:04:24,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 444 flow [2023-08-04 03:04:24,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:04:24,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:04:24,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-04 03:04:24,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4684848484848485 [2023-08-04 03:04:24,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-04 03:04:24,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-04 03:04:24,198 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:04:24,198 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-04 03:04:24,199 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 257.6666666666667) internal successors, (773), 3 states have internal predecessors, (773), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:04:24,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:04:24,202 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:04:24,202 INFO L175 Difference]: Start difference. First operand has 66 places, 79 transitions, 242 flow. Second operand 3 states and 773 transitions. [2023-08-04 03:04:24,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 444 flow [2023-08-04 03:04:24,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 96 transitions, 442 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:04:24,272 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 252 flow [2023-08-04 03:04:24,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=252, PETRI_PLACES=68, PETRI_TRANSITIONS=80} [2023-08-04 03:04:24,273 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-04 03:04:24,273 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 252 flow [2023-08-04 03:04:24,274 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:04:24,274 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:04:24,274 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:04:24,278 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-04 03:04:24,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:04:24,475 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:04:24,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:04:24,475 INFO L85 PathProgramCache]: Analyzing trace with hash -976204537, now seen corresponding path program 1 times [2023-08-04 03:04:24,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:04:24,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237264150] [2023-08-04 03:04:24,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:04:24,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:04:24,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:04:24,522 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:04:24,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:04:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237264150] [2023-08-04 03:04:24,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237264150] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:04:24,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074226206] [2023-08-04 03:04:24,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:04:24,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:04:24,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:04:24,525 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) [2023-08-04 03:04:24,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 03:04:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:04:24,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:04:24,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:04:24,641 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:04:24,642 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:04:24,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074226206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:04:24,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:04:24,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:04:24,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735600178] [2023-08-04 03:04:24,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:04:24,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:04:24,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:04:24,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:04:24,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:04:24,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 550 [2023-08-04 03:04:24,652 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 80 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:04:24,652 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:04:24,652 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 550 [2023-08-04 03:04:24,652 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:05:33,537 INFO L124 PetriNetUnfolderBase]: 713818/878328 cut-off events. [2023-08-04 03:05:33,537 INFO L125 PetriNetUnfolderBase]: For 41817/41817 co-relation queries the response was YES. [2023-08-04 03:05:36,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794159 conditions, 878328 events. 713818/878328 cut-off events. For 41817/41817 co-relation queries the response was YES. Maximal size of possible extension queue 16922. Compared 5280463 event pairs, 364892 based on Foata normal form. 0/620958 useless extension candidates. Maximal degree in co-relation 665835. Up to 693825 conditions per place. [2023-08-04 03:05:40,010 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 92 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-04 03:05:40,011 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 507 flow [2023-08-04 03:05:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:05:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:05:40,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-04 03:05:40,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393939393939394 [2023-08-04 03:05:40,013 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-04 03:05:40,013 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-04 03:05:40,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:05:40,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-04 03:05:40,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:05:40,017 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:05:40,018 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:05:40,018 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 252 flow. Second operand 3 states and 782 transitions. [2023-08-04 03:05:40,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 507 flow [2023-08-04 03:05:40,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 106 transitions, 505 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:05:40,059 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 262 flow [2023-08-04 03:05:40,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=250, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=262, PETRI_PLACES=70, PETRI_TRANSITIONS=81} [2023-08-04 03:05:40,060 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-04 03:05:40,060 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 262 flow [2023-08-04 03:05:40,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 236.0) internal successors, (708), 3 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:05:40,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:05:40,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:05:40,068 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 03:05:40,265 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,SelfDestructingSolverStorable11 [2023-08-04 03:05:40,265 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:05:40,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:05:40,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1295055606, now seen corresponding path program 1 times [2023-08-04 03:05:40,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:05:40,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352483346] [2023-08-04 03:05:40,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:05:40,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:05:40,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:05:40,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:05:40,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:05:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352483346] [2023-08-04 03:05:40,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352483346] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:05:40,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516735411] [2023-08-04 03:05:40,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:05:40,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:05:40,332 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:05:40,333 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) [2023-08-04 03:05:40,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 03:05:40,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:05:40,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:05:40,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:05:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 03:05:40,444 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:05:40,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516735411] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:05:40,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:05:40,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:05:40,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819636763] [2023-08-04 03:05:40,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:05:40,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:05:40,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:05:40,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:05:40,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:05:40,462 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 550 [2023-08-04 03:05:40,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 81 transitions, 262 flow. Second operand has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:05:40,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:05:40,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 550 [2023-08-04 03:05:40,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:06:46,694 INFO L124 PetriNetUnfolderBase]: 642658/795332 cut-off events. [2023-08-04 03:06:46,694 INFO L125 PetriNetUnfolderBase]: For 94559/94559 co-relation queries the response was YES. [2023-08-04 03:06:49,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669110 conditions, 795332 events. 642658/795332 cut-off events. For 94559/94559 co-relation queries the response was YES. Maximal size of possible extension queue 13310. Compared 4773562 event pairs, 332282 based on Foata normal form. 0/580250 useless extension candidates. Maximal degree in co-relation 649367. Up to 612419 conditions per place. [2023-08-04 03:06:52,588 INFO L140 encePairwiseOnDemand]: 547/550 looper letters, 93 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-04 03:06:52,588 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 519 flow [2023-08-04 03:06:52,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:06:52,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:06:52,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-04 03:06:52,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47393939393939394 [2023-08-04 03:06:52,590 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-04 03:06:52,590 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-04 03:06:52,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:06:52,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-04 03:06:52,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 260.6666666666667) internal successors, (782), 3 states have internal predecessors, (782), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:06:52,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:06:52,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 550.0) internal successors, (2200), 4 states have internal predecessors, (2200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:06:52,594 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 262 flow. Second operand 3 states and 782 transitions. [2023-08-04 03:06:52,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 519 flow [2023-08-04 03:06:59,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 107 transitions, 517 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 03:06:59,828 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 272 flow [2023-08-04 03:06:59,828 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=550, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=272, PETRI_PLACES=72, PETRI_TRANSITIONS=82} [2023-08-04 03:06:59,829 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-04 03:06:59,829 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 272 flow [2023-08-04 03:06:59,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 237.33333333333334) internal successors, (712), 3 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:06:59,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:06:59,829 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:06:59,834 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 03:07:00,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-04 03:07:00,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:07:00,032 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:07:00,033 INFO L85 PathProgramCache]: Analyzing trace with hash -482173878, now seen corresponding path program 1 times [2023-08-04 03:07:00,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:07:00,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533055734] [2023-08-04 03:07:00,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:07:00,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:07:00,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:07:00,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-08-04 03:07:00,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:07:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533055734] [2023-08-04 03:07:00,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533055734] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:07:00,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012484009] [2023-08-04 03:07:00,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:07:00,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:07:00,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:07:00,084 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) [2023-08-04 03:07:00,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-04 03:07:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:07:00,205 INFO L262 TraceCheckSpWp]: Trace formula consists of 267 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:07:00,207 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:07:00,212 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 03:07:00,212 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:07:00,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2012484009] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:07:00,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:07:00,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-04 03:07:00,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578057122] [2023-08-04 03:07:00,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:07:00,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:07:00,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:07:00,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:07:00,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:07:00,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 550 [2023-08-04 03:07:00,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 82 transitions, 272 flow. Second operand has 3 states, 3 states have (on average 239.0) internal successors, (717), 3 states have internal predecessors, (717), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:07:00,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:07:00,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 550 [2023-08-04 03:07:00,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 03:07:25,701 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 [2023-08-04 03:07:25,701 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 03:07:26,725 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 [2023-08-04 03:07:26,725 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-04 03:07:27,020 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:07:27,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 03:07:27,020 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 03:07:27,020 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 03:07:27,021 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 03:07:27,021 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:07:27,022 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:07:27,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:07:27 BasicIcfg [2023-08-04 03:07:27,042 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:07:27,043 INFO L158 Benchmark]: Toolchain (without parser) took 622855.19ms. Allocated memory was 482.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 433.6MB in the beginning and 13.5GB in the end (delta: -13.1GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-04 03:07:27,043 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory was 301.5MB in the beginning and 301.3MB in the end (delta: 170.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:07:27,043 INFO L158 Benchmark]: CACSL2BoogieTranslator took 313.79ms. Allocated memory is still 482.3MB. Free memory was 433.3MB in the beginning and 420.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 03:07:27,043 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.61ms. Allocated memory is still 482.3MB. Free memory was 420.9MB in the beginning and 418.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:07:27,044 INFO L158 Benchmark]: Boogie Preprocessor took 49.09ms. Allocated memory is still 482.3MB. Free memory was 418.3MB in the beginning and 416.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:07:27,044 INFO L158 Benchmark]: RCFGBuilder took 733.62ms. Allocated memory is still 482.3MB. Free memory was 416.2MB in the beginning and 429.0MB in the end (delta: -12.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. [2023-08-04 03:07:27,044 INFO L158 Benchmark]: TraceAbstraction took 621698.36ms. Allocated memory was 482.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 429.0MB in the beginning and 13.5GB in the end (delta: -13.1GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-04 03:07:27,045 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 348.1MB. Free memory was 301.5MB in the beginning and 301.3MB in the end (delta: 170.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 313.79ms. Allocated memory is still 482.3MB. Free memory was 433.3MB in the beginning and 420.9MB in the end (delta: 12.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 54.61ms. Allocated memory is still 482.3MB. Free memory was 420.9MB in the beginning and 418.3MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 49.09ms. Allocated memory is still 482.3MB. Free memory was 418.3MB in the beginning and 416.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 733.62ms. Allocated memory is still 482.3MB. Free memory was 416.2MB in the beginning and 429.0MB in the end (delta: -12.7MB). Peak memory consumption was 25.1MB. Max. memory is 16.0GB. * TraceAbstraction took 621698.36ms. Allocated memory was 482.3MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 429.0MB in the beginning and 13.5GB in the end (delta: -13.1GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.9s, 223 PlacesBefore, 47 PlacesAfterwards, 249 TransitionsBefore, 56 TransitionsAfterwards, 5638 CoEnabledTransitionPairs, 7 FixpointIterations, 111 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 24 ConcurrentYvCompositions, 17 ChoiceCompositions, 230 TotalNumberOfCompositions, 12408 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8487, independent: 8337, independent conditional: 0, independent unconditional: 8337, dependent: 150, dependent conditional: 0, dependent unconditional: 150, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3051, independent: 3013, independent conditional: 0, independent unconditional: 3013, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8487, independent: 5324, independent conditional: 0, independent unconditional: 5324, dependent: 112, dependent conditional: 0, dependent unconditional: 112, unknown: 3051, unknown conditional: 0, unknown unconditional: 3051] , Statistics on independence cache: Total cache size (in pairs): 289, Positive cache size: 277, Positive conditional cache size: 0, Positive unconditional cache size: 277, 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: 6.8s, 256 PlacesBefore, 68 PlacesAfterwards, 293 TransitionsBefore, 85 TransitionsAfterwards, 14672 CoEnabledTransitionPairs, 7 FixpointIterations, 110 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 34 ConcurrentYvCompositions, 20 ChoiceCompositions, 258 TotalNumberOfCompositions, 38800 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26531, independent: 26263, independent conditional: 0, independent unconditional: 26263, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8175, independent: 8124, independent conditional: 0, independent unconditional: 8124, dependent: 51, dependent conditional: 0, dependent unconditional: 51, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26531, independent: 18139, independent conditional: 0, independent unconditional: 18139, dependent: 217, dependent conditional: 0, dependent unconditional: 217, unknown: 8175, unknown conditional: 0, unknown unconditional: 8175] , Statistics on independence cache: Total cache size (in pairs): 977, Positive cache size: 959, Positive conditional cache size: 0, Positive unconditional cache size: 959, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.7s, 256 PlacesBefore, 68 PlacesAfterwards, 293 TransitionsBefore, 85 TransitionsAfterwards, 14672 CoEnabledTransitionPairs, 7 FixpointIterations, 114 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 16 TrivialYvCompositions, 34 ConcurrentYvCompositions, 20 ChoiceCompositions, 257 TotalNumberOfCompositions, 38569 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 25639, independent: 25374, independent conditional: 0, independent unconditional: 25374, dependent: 265, dependent conditional: 0, dependent unconditional: 265, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8086, independent: 8037, independent conditional: 0, independent unconditional: 8037, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 25639, independent: 17337, independent conditional: 0, independent unconditional: 17337, dependent: 216, dependent conditional: 0, dependent unconditional: 216, unknown: 8086, unknown conditional: 0, unknown unconditional: 8086] , Statistics on independence cache: Total cache size (in pairs): 918, Positive cache size: 900, Positive conditional cache size: 0, Positive unconditional cache size: 900, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 127]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 244 locations, 4 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: 7.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=154occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 8 NumberOfCodeBlocks, 8 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 271 locations, 4 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: 152.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 142.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 387 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 328 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 23 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 834 IncrementalHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 23 mSolverCounterUnsat, 8 mSDtfsCounter, 834 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 178 GetRequests, 154 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=260occurred in iteration=0, InterpolantAutomatonStates: 29, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 259 NumberOfCodeBlocks, 259 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 290 ConstructedInterpolants, 0 QuantifiedInterpolants, 462 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1128 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 157/178 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 1 thread instances CFG has 10 procedures, 271 locations, 4 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: 461.8s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 452.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 0.9s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 889 IncrementalHoareTripleChecker+Invalid, 905 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 18 mSDtfsCounter, 889 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 130 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272occurred in iteration=5, InterpolantAutomatonStates: 15, 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, 0.2s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1124 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 11 InterpolantComputations, 6 PerfectInterpolantSequences, 25/30 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 !ENTRY org.eclipse.osgi 4 0 2023-08-04 03:07:27.082 !MESSAGE Application error !STACK 1 org.eclipse.core.internal.resources.ResourceException(/)[568]: java.io.FileNotFoundException: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a429d13b2/.metadata/.plugins/org.eclipse.core.resources/.root/1.tree (No such file or directory) at java.base/java.io.FileOutputStream.open0(Native Method) at java.base/java.io.FileOutputStream.open(FileOutputStream.java:298) at java.base/java.io.FileOutputStream.(FileOutputStream.java:237) at java.base/java.io.FileOutputStream.(FileOutputStream.java:187) at org.eclipse.core.internal.localstore.SafeFileOutputStream.(SafeFileOutputStream.java:55) at org.eclipse.core.internal.resources.SaveManager.saveTree(SaveManager.java:1381) at org.eclipse.core.internal.resources.SaveManager.save(SaveManager.java:1168) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2333) at org.eclipse.core.internal.resources.Workspace.save(Workspace.java:2322) at de.uni_freiburg.informatik.ultimate.core.coreplugin.UltimateCore.start(UltimateCore.java:190) at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:203) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134) at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:401) at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:255) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:657) at org.eclipse.equinox.launcher.Main.basicRun(Main.java:594) at org.eclipse.equinox.launcher.Main.run(Main.java:1465) at org.eclipse.equinox.launcher.Main.main(Main.java:1438) An error has occurred. See the log file /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a429d13b2/.metadata/.log.