/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-queue-add-3.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:18:30,914 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:18:30,988 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:18:30,992 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:18:30,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:18:30,993 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:18:30,994 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:18:31,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:18:31,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:18:31,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:18:31,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:18:31,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:18:31,017 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:18:31,017 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:18:31,017 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:18:31,018 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:18:31,018 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:18:31,018 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:18:31,018 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:18:31,019 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:18:31,019 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:18:31,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:18:31,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:18:31,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:18:31,020 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:18:31,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:18:31,021 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:18:31,021 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:18:31,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:18:31,022 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:18:31,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:18:31,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:18:31,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:18:31,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:18:31,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:18:31,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:18:31,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:18:31,024 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:18:31,025 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:18:31,025 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:18:31,025 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:18:31,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:18:31,262 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:18:31,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:18:31,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:18:31,287 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:18:31,287 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:18:31,289 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-queue-add-3.wvr_bound2.c [2023-08-04 03:18:32,495 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:18:32,708 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:18:32,708 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-queue-add-3.wvr_bound2.c [2023-08-04 03:18:32,715 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da78875b4/c0f839088bd447e38d2613e099976299/FLAG781b9f729 [2023-08-04 03:18:32,735 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/da78875b4/c0f839088bd447e38d2613e099976299 [2023-08-04 03:18:32,741 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:18:32,743 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:18:32,748 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:18:32,748 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:18:32,750 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:18:32,751 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:32,752 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@205c9497 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32, skipping insertion in model container [2023-08-04 03:18:32,752 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:32,784 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:18:32,924 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-queue-add-3.wvr_bound2.c[3655,3668] [2023-08-04 03:18:32,930 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:18:32,939 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:18:32,968 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-queue-add-3.wvr_bound2.c[3655,3668] [2023-08-04 03:18:32,971 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:18:32,979 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:18:32,979 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:18:32,986 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:18:32,986 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32 WrapperNode [2023-08-04 03:18:32,986 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:18:32,987 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:18:32,987 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:18:32,988 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:18:32,994 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,002 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,027 INFO L138 Inliner]: procedures = 25, calls = 55, calls flagged for inlining = 16, calls inlined = 18, statements flattened = 300 [2023-08-04 03:18:33,028 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:18:33,028 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:18:33,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:18:33,029 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:18:33,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,041 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,042 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,050 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,069 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,071 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,073 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,076 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:18:33,077 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:18:33,077 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:18:33,077 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:18:33,078 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (1/1) ... [2023-08-04 03:18:33,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:18:33,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:18:33,109 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 03:18:33,125 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 03:18:33,158 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:18:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:18:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:18:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:18:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:18:33,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:18:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:18:33,159 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:18:33,159 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 03:18:33,161 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 03:18:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:18:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 03:18:33,162 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 03:18:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 03:18:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:18:33,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:18:33,163 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:18:33,165 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 03:18:33,285 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:18:33,287 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:18:33,641 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:18:33,743 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:18:33,744 INFO L302 CfgBuilder]: Removed 11 assume(true) statements. [2023-08-04 03:18:33,746 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:18:33 BoogieIcfgContainer [2023-08-04 03:18:33,746 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:18:33,747 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:18:33,748 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:18:33,750 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:18:33,750 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:18:32" (1/3) ... [2023-08-04 03:18:33,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ab1d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:18:33, skipping insertion in model container [2023-08-04 03:18:33,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:18:32" (2/3) ... [2023-08-04 03:18:33,751 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@58ab1d90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:18:33, skipping insertion in model container [2023-08-04 03:18:33,751 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:18:33" (3/3) ... [2023-08-04 03:18:33,752 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-queue-add-3.wvr_bound2.c [2023-08-04 03:18:33,759 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:18:33,767 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:18:33,768 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:18:33,768 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:18:33,834 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 03:18:33,877 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 249 transitions, 540 flow [2023-08-04 03:18:34,088 INFO L124 PetriNetUnfolderBase]: 111/718 cut-off events. [2023-08-04 03:18:34,089 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:18:34,099 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 3275 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 03:18:34,100 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 249 transitions, 540 flow [2023-08-04 03:18:34,112 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 223 places, 249 transitions, 540 flow [2023-08-04 03:18:34,115 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:18:34,134 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 223 places, 249 transitions, 540 flow [2023-08-04 03:18:34,138 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 223 places, 249 transitions, 540 flow [2023-08-04 03:18:34,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 249 transitions, 540 flow [2023-08-04 03:18:34,240 INFO L124 PetriNetUnfolderBase]: 111/718 cut-off events. [2023-08-04 03:18:34,240 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:18:34,244 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 3275 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 03:18:34,254 INFO L119 LiptonReduction]: Number of co-enabled transitions 5638 [2023-08-04 03:18:41,539 INFO L134 LiptonReduction]: Checked pairs total: 11178 [2023-08-04 03:18:41,540 INFO L136 LiptonReduction]: Total number of compositions: 233 [2023-08-04 03:18:41,552 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:18:41,557 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;@58370c5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:18:41,557 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:18:41,564 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:18:41,564 INFO L124 PetriNetUnfolderBase]: 5/36 cut-off events. [2023-08-04 03:18:41,564 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:18:41,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:18:41,565 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:18:41,565 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:18:41,569 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:18:41,570 INFO L85 PathProgramCache]: Analyzing trace with hash 1679917341, now seen corresponding path program 1 times [2023-08-04 03:18:41,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:18:41,578 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226568014] [2023-08-04 03:18:41,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:18:41,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:18:41,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:18:41,791 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:18:41,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:18:41,910 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:18:41,912 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:18:41,913 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:18:41,915 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:18:41,916 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:18:41,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:18:41,916 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:18:41,921 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 03:18:41,922 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:18:41,922 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:18:41,969 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 03:18:41,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 03:18:42,559 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 03:18:42,560 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:18:42,604 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 33143 event pairs, 22 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 03:18:42,605 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 03:18:42,635 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 293 transitions, 676 flow [2023-08-04 03:18:42,636 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:18:42,636 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 03:18:42,636 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 03:18:42,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 03:18:43,156 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 03:18:43,156 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:18:43,201 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 33143 event pairs, 22 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 03:18:43,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 14672 [2023-08-04 03:18:49,970 INFO L134 LiptonReduction]: Checked pairs total: 38964 [2023-08-04 03:18:49,970 INFO L136 LiptonReduction]: Total number of compositions: 256 [2023-08-04 03:18:49,972 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:18:49,973 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;@58370c5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:18:49,973 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:18:49,982 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:18:49,983 INFO L124 PetriNetUnfolderBase]: 24/136 cut-off events. [2023-08-04 03:18:49,983 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 03:18:49,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:18:49,983 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-04 03:18:49,983 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:18:49,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:18:49,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1333801872, now seen corresponding path program 1 times [2023-08-04 03:18:49,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:18:49,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738015600] [2023-08-04 03:18:49,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:18:49,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:18:50,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:18:50,122 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 03:18:50,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:18:50,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738015600] [2023-08-04 03:18:50,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738015600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:18:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200909607] [2023-08-04 03:18:50,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:18:50,125 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:18:50,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:18:50,133 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 03:18:50,174 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 03:18:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:18:50,282 INFO L262 TraceCheckSpWp]: Trace formula consists of 192 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:18:50,285 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:18:50,331 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 03:18:50,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:18:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1200909607] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:18:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:18:50,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:18:50,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762283466] [2023-08-04 03:18:50,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:18:50,339 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:18:50,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:18:50,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:18:50,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:18:50,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 549 [2023-08-04 03:18:50,394 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 03:18:50,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:18:50,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 549 [2023-08-04 03:18:50,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:20:14,496 INFO L124 PetriNetUnfolderBase]: 870138/1063255 cut-off events. [2023-08-04 03:20:14,497 INFO L125 PetriNetUnfolderBase]: For 105975/105975 co-relation queries the response was YES. [2023-08-04 03:20:17,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2152497 conditions, 1063255 events. 870138/1063255 cut-off events. For 105975/105975 co-relation queries the response was YES. Maximal size of possible extension queue 20694. Compared 6379430 event pairs, 432189 based on Foata normal form. 0/738296 useless extension candidates. Maximal degree in co-relation 692002. Up to 1028819 conditions per place. [2023-08-04 03:20:19,003 INFO L140 encePairwiseOnDemand]: 540/549 looper letters, 42 selfloop transitions, 5 changer transitions 31/89 dead transitions. [2023-08-04 03:20:19,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 89 transitions, 414 flow [2023-08-04 03:20:19,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:20:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:20:19,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1226 transitions. [2023-08-04 03:20:19,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44663023679417124 [2023-08-04 03:20:19,026 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1226 transitions. [2023-08-04 03:20:19,027 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1226 transitions. [2023-08-04 03:20:19,033 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:20:19,036 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1226 transitions. [2023-08-04 03:20:19,045 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 03:20:19,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 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 03:20:19,056 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 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 03:20:19,057 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 260 flow. Second operand 5 states and 1226 transitions. [2023-08-04 03:20:19,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 89 transitions, 414 flow [2023-08-04 03:20:19,222 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 03:20:19,224 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 149 flow [2023-08-04 03:20:19,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:20:19,229 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 1 predicate places. [2023-08-04 03:20:19,229 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 149 flow [2023-08-04 03:20:19,230 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 03:20:19,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:20:19,231 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:20:19,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 03:20:19,437 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 03:20:19,438 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 03:20:19,438 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:20:19,438 INFO L85 PathProgramCache]: Analyzing trace with hash -727897378, now seen corresponding path program 1 times [2023-08-04 03:20:19,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:20:19,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845795492] [2023-08-04 03:20:19,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:19,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:20:19,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:19,547 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 03:20:19,547 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:20:19,547 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845795492] [2023-08-04 03:20:19,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845795492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:20:19,548 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:20:19,548 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:20:19,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098507925] [2023-08-04 03:20:19,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:20:19,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:20:19,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:20:19,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:20:19,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:20:19,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 549 [2023-08-04 03:20:19,561 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 03:20:19,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:20:19,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 549 [2023-08-04 03:20:19,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:20:30,859 INFO L124 PetriNetUnfolderBase]: 130130/155533 cut-off events. [2023-08-04 03:20:30,860 INFO L125 PetriNetUnfolderBase]: For 5262/5262 co-relation queries the response was YES. [2023-08-04 03:20:31,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 315804 conditions, 155533 events. 130130/155533 cut-off events. For 5262/5262 co-relation queries the response was YES. Maximal size of possible extension queue 3352. Compared 715106 event pairs, 76403 based on Foata normal form. 1/109287 useless extension candidates. Maximal degree in co-relation 90714. Up to 153685 conditions per place. [2023-08-04 03:20:32,040 INFO L140 encePairwiseOnDemand]: 546/549 looper letters, 40 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 03:20:32,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 53 transitions, 236 flow [2023-08-04 03:20:32,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:20:32,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:20:32,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 732 transitions. [2023-08-04 03:20:32,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-04 03:20:32,068 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 732 transitions. [2023-08-04 03:20:32,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 732 transitions. [2023-08-04 03:20:32,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:20:32,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 732 transitions. [2023-08-04 03:20:32,070 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 03:20:32,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 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 03:20:32,074 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 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 03:20:32,075 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 149 flow. Second operand 3 states and 732 transitions. [2023-08-04 03:20:32,075 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 53 transitions, 236 flow [2023-08-04 03:20:32,079 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 03:20:32,094 INFO L231 Difference]: Finished difference. Result has 57 places, 50 transitions, 143 flow [2023-08-04 03:20:32,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:20:32,095 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -11 predicate places. [2023-08-04 03:20:32,096 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 50 transitions, 143 flow [2023-08-04 03:20:32,096 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 03:20:32,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:20:32,098 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:20:32,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:20:32,098 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 03:20:32,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:20:32,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1902914823, now seen corresponding path program 1 times [2023-08-04 03:20:32,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:20:32,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259436980] [2023-08-04 03:20:32,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:32,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:20:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:32,265 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 03:20:32,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:20:32,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259436980] [2023-08-04 03:20:32,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259436980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:20:32,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [693123121] [2023-08-04 03:20:32,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:32,266 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:20:32,266 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:20:32,269 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 03:20:32,271 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 03:20:32,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:32,366 INFO L262 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:20:32,367 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:20:32,384 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 03:20:32,384 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:20:32,407 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 03:20:32,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [693123121] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:20:32,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:20:32,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:20:32,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905261648] [2023-08-04 03:20:32,408 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:20:32,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:20:32,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:20:32,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:20:32,410 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:20:32,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 549 [2023-08-04 03:20:32,430 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 03:20:32,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:20:32,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 549 [2023-08-04 03:20:32,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:20:40,945 INFO L124 PetriNetUnfolderBase]: 103491/122552 cut-off events. [2023-08-04 03:20:40,946 INFO L125 PetriNetUnfolderBase]: For 3532/3532 co-relation queries the response was YES. [2023-08-04 03:20:41,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 248243 conditions, 122552 events. 103491/122552 cut-off events. For 3532/3532 co-relation queries the response was YES. Maximal size of possible extension queue 2643. Compared 529002 event pairs, 48474 based on Foata normal form. 3/84922 useless extension candidates. Maximal degree in co-relation 181175. Up to 121133 conditions per place. [2023-08-04 03:20:41,716 INFO L140 encePairwiseOnDemand]: 546/549 looper letters, 42 selfloop transitions, 3 changer transitions 0/56 dead transitions. [2023-08-04 03:20:41,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 56 transitions, 244 flow [2023-08-04 03:20:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:20:41,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:20:41,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 962 transitions. [2023-08-04 03:20:41,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43806921675774135 [2023-08-04 03:20:41,719 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 962 transitions. [2023-08-04 03:20:41,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 962 transitions. [2023-08-04 03:20:41,719 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:20:41,719 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 962 transitions. [2023-08-04 03:20:41,721 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 03:20:41,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 549.0) internal successors, (2745), 5 states have internal predecessors, (2745), 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 03:20:41,725 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 549.0) internal successors, (2745), 5 states have internal predecessors, (2745), 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 03:20:41,726 INFO L175 Difference]: Start difference. First operand has 57 places, 50 transitions, 143 flow. Second operand 4 states and 962 transitions. [2023-08-04 03:20:41,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 56 transitions, 244 flow [2023-08-04 03:20:41,727 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 03:20:41,728 INFO L231 Difference]: Finished difference. Result has 58 places, 49 transitions, 140 flow [2023-08-04 03:20:41,728 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:20:41,729 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-04 03:20:41,729 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 49 transitions, 140 flow [2023-08-04 03:20:41,729 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 03:20:41,730 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:20:41,730 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:20:41,738 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 03:20:41,934 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 03:20:41,935 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 03:20:41,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:20:41,935 INFO L85 PathProgramCache]: Analyzing trace with hash 252296271, now seen corresponding path program 1 times [2023-08-04 03:20:41,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:20:41,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113127622] [2023-08-04 03:20:41,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:41,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:20:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:42,048 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 03:20:42,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:20:42,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113127622] [2023-08-04 03:20:42,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113127622] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:20:42,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208741947] [2023-08-04 03:20:42,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:42,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:20:42,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:20:42,051 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 03:20:42,054 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 03:20:42,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:42,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:20:42,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:20:42,172 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 03:20:42,173 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:20:42,173 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1208741947] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:20:42,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:20:42,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:20:42,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039213082] [2023-08-04 03:20:42,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:20:42,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:20:42,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:20:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:20:42,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:20:42,188 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 549 [2023-08-04 03:20:42,189 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 03:20:42,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:20:42,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 549 [2023-08-04 03:20:42,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:20:50,104 INFO L124 PetriNetUnfolderBase]: 97491/117659 cut-off events. [2023-08-04 03:20:50,104 INFO L125 PetriNetUnfolderBase]: For 2527/2527 co-relation queries the response was YES. [2023-08-04 03:20:50,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 236897 conditions, 117659 events. 97491/117659 cut-off events. For 2527/2527 co-relation queries the response was YES. Maximal size of possible extension queue 2693. Compared 554816 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 03:20:50,962 INFO L140 encePairwiseOnDemand]: 545/549 looper letters, 61 selfloop transitions, 5 changer transitions 0/76 dead transitions. [2023-08-04 03:20:50,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 76 transitions, 324 flow [2023-08-04 03:20:50,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:20:50,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:20:50,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1211 transitions. [2023-08-04 03:20:50,965 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4411657559198543 [2023-08-04 03:20:50,966 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1211 transitions. [2023-08-04 03:20:50,966 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1211 transitions. [2023-08-04 03:20:50,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:20:50,966 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1211 transitions. [2023-08-04 03:20:50,969 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 03:20:50,973 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 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 03:20:50,975 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 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 03:20:50,975 INFO L175 Difference]: Start difference. First operand has 58 places, 49 transitions, 140 flow. Second operand 5 states and 1211 transitions. [2023-08-04 03:20:50,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 76 transitions, 324 flow [2023-08-04 03:20:50,978 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 03:20:50,979 INFO L231 Difference]: Finished difference. Result has 58 places, 51 transitions, 152 flow [2023-08-04 03:20:50,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:20:50,980 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -10 predicate places. [2023-08-04 03:20:50,980 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 51 transitions, 152 flow [2023-08-04 03:20:50,981 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 03:20:50,981 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:20:50,981 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:20:50,991 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 03:20:51,191 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 03:20:51,192 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:20:51,192 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:20:51,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1358091294, now seen corresponding path program 1 times [2023-08-04 03:20:51,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:20:51,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102649465] [2023-08-04 03:20:51,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:51,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:20:51,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:51,253 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 03:20:51,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:20:51,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102649465] [2023-08-04 03:20:51,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2102649465] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:20:51,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:20:51,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:20:51,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038802333] [2023-08-04 03:20:51,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:20:51,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:20:51,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:20:51,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:20:51,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:20:51,269 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 549 [2023-08-04 03:20:51,270 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 03:20:51,270 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:20:51,270 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 549 [2023-08-04 03:20:51,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:20:59,026 INFO L124 PetriNetUnfolderBase]: 95010/114719 cut-off events. [2023-08-04 03:20:59,027 INFO L125 PetriNetUnfolderBase]: For 3651/3651 co-relation queries the response was YES. [2023-08-04 03:20:59,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 231458 conditions, 114719 events. 95010/114719 cut-off events. For 3651/3651 co-relation queries the response was YES. Maximal size of possible extension queue 2716. Compared 537331 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 03:20:59,707 INFO L140 encePairwiseOnDemand]: 546/549 looper letters, 47 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-04 03:20:59,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 59 transitions, 265 flow [2023-08-04 03:20:59,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:20:59,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:20:59,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 738 transitions. [2023-08-04 03:20:59,710 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44808743169398907 [2023-08-04 03:20:59,710 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 738 transitions. [2023-08-04 03:20:59,710 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 738 transitions. [2023-08-04 03:20:59,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:20:59,710 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 738 transitions. [2023-08-04 03:20:59,712 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 03:20:59,714 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 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 03:20:59,715 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 549.0) internal successors, (2196), 4 states have internal predecessors, (2196), 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 03:20:59,715 INFO L175 Difference]: Start difference. First operand has 58 places, 51 transitions, 152 flow. Second operand 3 states and 738 transitions. [2023-08-04 03:20:59,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 59 transitions, 265 flow [2023-08-04 03:20:59,718 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 03:20:59,718 INFO L231 Difference]: Finished difference. Result has 59 places, 50 transitions, 150 flow [2023-08-04 03:20:59,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:20:59,726 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-04 03:20:59,726 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 50 transitions, 150 flow [2023-08-04 03:20:59,727 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 03:20:59,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:20:59,727 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 03:20:59,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 03:20:59,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:20:59,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:20:59,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1884622960, now seen corresponding path program 1 times [2023-08-04 03:20:59,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:20:59,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477793181] [2023-08-04 03:20:59,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:59,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:20:59,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:59,796 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 03:20:59,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:20:59,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477793181] [2023-08-04 03:20:59,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477793181] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:20:59,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650669696] [2023-08-04 03:20:59,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:20:59,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:20:59,798 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:20:59,799 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 03:20:59,802 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 03:20:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:20:59,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 03:20:59,911 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:20:59,936 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 03:20:59,937 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 03:20:59,952 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 03:20:59,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650669696] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 03:20:59,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 03:20:59,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 03:20:59,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098303958] [2023-08-04 03:20:59,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 03:20:59,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:20:59,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:20:59,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:20:59,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:20:59,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 549 [2023-08-04 03:20:59,968 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 03:20:59,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:20:59,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 549 [2023-08-04 03:20:59,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:07,026 INFO L124 PetriNetUnfolderBase]: 81222/97844 cut-off events. [2023-08-04 03:21:07,027 INFO L125 PetriNetUnfolderBase]: For 2706/2706 co-relation queries the response was YES. [2023-08-04 03:21:07,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197312 conditions, 97844 events. 81222/97844 cut-off events. For 2706/2706 co-relation queries the response was YES. Maximal size of possible extension queue 2659. Compared 450398 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 03:21:07,631 INFO L140 encePairwiseOnDemand]: 546/549 looper letters, 57 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-04 03:21:07,631 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 70 transitions, 309 flow [2023-08-04 03:21:07,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:21:07,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:21:07,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 976 transitions. [2023-08-04 03:21:07,633 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2023-08-04 03:21:07,634 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 976 transitions. [2023-08-04 03:21:07,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 976 transitions. [2023-08-04 03:21:07,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:07,634 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 976 transitions. [2023-08-04 03:21:07,636 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 03:21:07,639 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 549.0) internal successors, (2745), 5 states have internal predecessors, (2745), 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 03:21:07,639 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 549.0) internal successors, (2745), 5 states have internal predecessors, (2745), 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 03:21:07,639 INFO L175 Difference]: Start difference. First operand has 59 places, 50 transitions, 150 flow. Second operand 4 states and 976 transitions. [2023-08-04 03:21:07,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 70 transitions, 309 flow [2023-08-04 03:21:07,642 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 03:21:07,643 INFO L231 Difference]: Finished difference. Result has 60 places, 49 transitions, 147 flow [2023-08-04 03:21:07,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:21:07,643 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -8 predicate places. [2023-08-04 03:21:07,643 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 49 transitions, 147 flow [2023-08-04 03:21:07,644 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 03:21:07,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:07,644 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 03:21:07,654 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 03:21:07,853 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 03:21:07,854 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:21:07,854 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:07,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1397110883, now seen corresponding path program 1 times [2023-08-04 03:21:07,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:07,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460722171] [2023-08-04 03:21:07,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:07,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:07,938 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 03:21:07,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:07,939 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460722171] [2023-08-04 03:21:07,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1460722171] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:21:07,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [589510488] [2023-08-04 03:21:07,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:07,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:21:07,941 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:21:07,946 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 03:21:07,949 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 03:21:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:08,062 INFO L262 TraceCheckSpWp]: Trace formula consists of 254 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:21:08,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:21:08,099 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 03:21:08,099 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:21:08,099 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [589510488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:21:08,099 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:21:08,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:21:08,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931419998] [2023-08-04 03:21:08,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:21:08,100 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:21:08,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:08,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:21:08,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:21:08,115 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 229 out of 549 [2023-08-04 03:21:08,116 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 03:21:08,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:08,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 229 of 549 [2023-08-04 03:21:08,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:21:12,894 INFO L124 PetriNetUnfolderBase]: 58551/70475 cut-off events. [2023-08-04 03:21:12,894 INFO L125 PetriNetUnfolderBase]: For 2958/2958 co-relation queries the response was YES. [2023-08-04 03:21:13,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143177 conditions, 70475 events. 58551/70475 cut-off events. For 2958/2958 co-relation queries the response was YES. Maximal size of possible extension queue 1888. Compared 306031 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 03:21:13,119 INFO L140 encePairwiseOnDemand]: 546/549 looper letters, 0 selfloop transitions, 0 changer transitions 95/95 dead transitions. [2023-08-04 03:21:13,119 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 95 transitions, 409 flow [2023-08-04 03:21:13,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 03:21:13,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 03:21:13,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1230 transitions. [2023-08-04 03:21:13,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44808743169398907 [2023-08-04 03:21:13,122 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1230 transitions. [2023-08-04 03:21:13,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1230 transitions. [2023-08-04 03:21:13,123 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:21:13,123 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1230 transitions. [2023-08-04 03:21:13,125 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 03:21:13,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 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 03:21:13,129 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 549.0) internal successors, (3294), 6 states have internal predecessors, (3294), 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 03:21:13,129 INFO L175 Difference]: Start difference. First operand has 60 places, 49 transitions, 147 flow. Second operand 5 states and 1230 transitions. [2023-08-04 03:21:13,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 95 transitions, 409 flow [2023-08-04 03:21:13,249 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 03:21:13,249 INFO L231 Difference]: Finished difference. Result has 59 places, 0 transitions, 0 flow [2023-08-04 03:21:13,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=549, 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 03:21:13,250 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -9 predicate places. [2023-08-04 03:21:13,250 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 0 transitions, 0 flow [2023-08-04 03:21:13,251 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 03:21:13,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:21:13,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:21:13,251 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:21:13,255 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 03:21:13,451 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 03:21:13,452 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:13,452 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-04 03:21:13,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 03:21:13,818 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 03:21:13,818 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:21:13,846 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 33143 event pairs, 22 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 03:21:13,846 INFO L82 GeneralOperation]: Start removeDead. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 03:21:13,866 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 256 places, 293 transitions, 676 flow [2023-08-04 03:21:13,866 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:21:13,867 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 03:21:13,867 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 256 places, 293 transitions, 676 flow [2023-08-04 03:21:13,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 256 places, 293 transitions, 676 flow [2023-08-04 03:21:14,223 INFO L124 PetriNetUnfolderBase]: 919/4212 cut-off events. [2023-08-04 03:21:14,223 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:21:14,254 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 33143 event pairs, 22 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 03:21:14,323 INFO L119 LiptonReduction]: Number of co-enabled transitions 14672 [2023-08-04 03:21:21,086 INFO L134 LiptonReduction]: Checked pairs total: 41865 [2023-08-04 03:21:21,087 INFO L136 LiptonReduction]: Total number of compositions: 260 [2023-08-04 03:21:21,088 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 03:21:21,088 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;@58370c5e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:21:21,088 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 03:21:21,091 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:21:21,091 INFO L124 PetriNetUnfolderBase]: 3/33 cut-off events. [2023-08-04 03:21:21,091 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 03:21:21,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:21:21,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:21:21,092 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:21:21,092 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:21:21,092 INFO L85 PathProgramCache]: Analyzing trace with hash -400542927, now seen corresponding path program 1 times [2023-08-04 03:21:21,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:21:21,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941884029] [2023-08-04 03:21:21,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:21:21,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:21:21,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:21:21,122 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 03:21:21,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:21:21,122 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941884029] [2023-08-04 03:21:21,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941884029] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:21:21,123 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:21:21,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 03:21:21,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395236739] [2023-08-04 03:21:21,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:21:21,123 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:21:21,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:21:21,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:21:21,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:21:21,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 553 [2023-08-04 03:21:21,133 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 03:21:21,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:21:21,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 553 [2023-08-04 03:21:21,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:22:43,753 INFO L124 PetriNetUnfolderBase]: 863266/1046381 cut-off events. [2023-08-04 03:22:43,753 INFO L125 PetriNetUnfolderBase]: For 114218/114218 co-relation queries the response was YES. [2023-08-04 03:22:46,620 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2126266 conditions, 1046381 events. 863266/1046381 cut-off events. For 114218/114218 co-relation queries the response was YES. Maximal size of possible extension queue 19612. Compared 6024635 event pairs, 506256 based on Foata normal form. 0/723506 useless extension candidates. Maximal degree in co-relation 686954. Up to 1020036 conditions per place. [2023-08-04 03:22:50,377 INFO L140 encePairwiseOnDemand]: 545/553 looper letters, 67 selfloop transitions, 2 changer transitions 3/84 dead transitions. [2023-08-04 03:22:50,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 84 transitions, 396 flow [2023-08-04 03:22:50,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:22:50,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:22:50,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 765 transitions. [2023-08-04 03:22:50,380 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46112115732368897 [2023-08-04 03:22:50,380 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 765 transitions. [2023-08-04 03:22:50,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 765 transitions. [2023-08-04 03:22:50,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:22:50,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 765 transitions. [2023-08-04 03:22:50,382 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 03:22:50,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:22:50,384 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:22:50,384 INFO L175 Difference]: Start difference. First operand has 68 places, 85 transitions, 260 flow. Second operand 3 states and 765 transitions. [2023-08-04 03:22:50,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 84 transitions, 396 flow [2023-08-04 03:22:50,464 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 03:22:50,465 INFO L231 Difference]: Finished difference. Result has 70 places, 78 transitions, 244 flow [2023-08-04 03:22:50,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, 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 03:22:50,465 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-04 03:22:50,465 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 78 transitions, 244 flow [2023-08-04 03:22:50,466 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 03:22:50,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:22:50,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:22:50,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 03:22:50,466 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:22:50,466 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:22:50,466 INFO L85 PathProgramCache]: Analyzing trace with hash -1218526939, now seen corresponding path program 1 times [2023-08-04 03:22:50,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:22:50,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358253413] [2023-08-04 03:22:50,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:22:50,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:22:50,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:22:50,505 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 03:22:50,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:22:50,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358253413] [2023-08-04 03:22:50,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358253413] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:22:50,506 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314462574] [2023-08-04 03:22:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:22:50,506 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:22:50,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:22:50,513 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 03:22:50,517 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 03:22:50,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:22:50,608 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:22:50,610 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:22:50,616 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 03:22:50,617 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:22:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314462574] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:22:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:22:50,617 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:22:50,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310033429] [2023-08-04 03:22:50,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:22:50,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:22:50,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:22:50,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:22:50,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:22:50,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 553 [2023-08-04 03:22:50,629 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 03:22:50,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:22:50,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 553 [2023-08-04 03:22:50,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:24:07,499 INFO L124 PetriNetUnfolderBase]: 854062/1036254 cut-off events. [2023-08-04 03:24:07,499 INFO L125 PetriNetUnfolderBase]: For 109856/109856 co-relation queries the response was YES. [2023-08-04 03:24:10,643 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2103948 conditions, 1036254 events. 854062/1036254 cut-off events. For 109856/109856 co-relation queries the response was YES. Maximal size of possible extension queue 20038. Compared 6014850 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 03:24:14,532 INFO L140 encePairwiseOnDemand]: 550/553 looper letters, 74 selfloop transitions, 2 changer transitions 0/88 dead transitions. [2023-08-04 03:24:14,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 88 transitions, 416 flow [2023-08-04 03:24:14,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:24:14,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:24:14,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 766 transitions. [2023-08-04 03:24:14,541 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46172393007836043 [2023-08-04 03:24:14,541 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 766 transitions. [2023-08-04 03:24:14,541 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 766 transitions. [2023-08-04 03:24:14,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:24:14,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 766 transitions. [2023-08-04 03:24:14,543 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 03:24:14,545 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:24:14,545 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:24:14,546 INFO L175 Difference]: Start difference. First operand has 70 places, 78 transitions, 244 flow. Second operand 3 states and 766 transitions. [2023-08-04 03:24:14,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 88 transitions, 416 flow [2023-08-04 03:24:14,892 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 03:24:14,893 INFO L231 Difference]: Finished difference. Result has 66 places, 79 transitions, 242 flow [2023-08-04 03:24:14,894 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, 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 03:24:14,894 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, -2 predicate places. [2023-08-04 03:24:14,894 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 79 transitions, 242 flow [2023-08-04 03:24:14,895 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 03:24:14,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:24:14,895 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 03:24:14,902 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 03:24:15,095 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 03:24:15,096 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:24:15,096 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:24:15,096 INFO L85 PathProgramCache]: Analyzing trace with hash 404779582, now seen corresponding path program 1 times [2023-08-04 03:24:15,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:24:15,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710438891] [2023-08-04 03:24:15,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:24:15,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:24:15,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:24:15,142 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 03:24:15,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:24:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710438891] [2023-08-04 03:24:15,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710438891] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:24:15,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1681928762] [2023-08-04 03:24:15,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:24:15,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:24:15,143 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:24:15,144 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 03:24:15,147 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 03:24:15,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:24:15,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:24:15,244 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:24:15,249 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 03:24:15,249 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:24:15,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1681928762] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:24:15,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:24:15,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:24:15,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742093809] [2023-08-04 03:24:15,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:24:15,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:24:15,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:24:15,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:24:15,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:24:15,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 553 [2023-08-04 03:24:15,259 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 03:24:15,259 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:24:15,259 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 553 [2023-08-04 03:24:15,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:25:30,802 INFO L124 PetriNetUnfolderBase]: 854586/1044176 cut-off events. [2023-08-04 03:25:30,802 INFO L125 PetriNetUnfolderBase]: For 57385/57385 co-relation queries the response was YES. [2023-08-04 03:25:33,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2111748 conditions, 1044176 events. 854586/1044176 cut-off events. For 57385/57385 co-relation queries the response was YES. Maximal size of possible extension queue 21236. Compared 6247544 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 03:25:37,590 INFO L140 encePairwiseOnDemand]: 550/553 looper letters, 82 selfloop transitions, 2 changer transitions 0/96 dead transitions. [2023-08-04 03:25:37,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 96 transitions, 444 flow [2023-08-04 03:25:37,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:25:37,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:25:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 773 transitions. [2023-08-04 03:25:37,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46594333936106086 [2023-08-04 03:25:37,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 773 transitions. [2023-08-04 03:25:37,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 773 transitions. [2023-08-04 03:25:37,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:25:37,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 773 transitions. [2023-08-04 03:25:37,594 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 03:25:37,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:25:37,596 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:25:37,596 INFO L175 Difference]: Start difference. First operand has 66 places, 79 transitions, 242 flow. Second operand 3 states and 773 transitions. [2023-08-04 03:25:37,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 96 transitions, 444 flow [2023-08-04 03:25:37,654 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 03:25:37,655 INFO L231 Difference]: Finished difference. Result has 68 places, 80 transitions, 252 flow [2023-08-04 03:25:37,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, 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 03:25:37,655 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 0 predicate places. [2023-08-04 03:25:37,656 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 80 transitions, 252 flow [2023-08-04 03:25:37,656 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 03:25:37,656 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:25:37,656 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 03:25:37,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 03:25:37,856 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 03:25:37,857 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:25:37,857 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:25:37,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1466165969, now seen corresponding path program 1 times [2023-08-04 03:25:37,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:25:37,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746966259] [2023-08-04 03:25:37,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:25:37,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:25:37,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:25:37,906 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 03:25:37,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:25:37,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746966259] [2023-08-04 03:25:37,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [746966259] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:25:37,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1314699779] [2023-08-04 03:25:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:25:37,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:25:37,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:25:37,908 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 03:25:37,911 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 03:25:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:25:38,149 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:25:38,150 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:25:38,156 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 03:25:38,156 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:25:38,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1314699779] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:25:38,156 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:25:38,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:25:38,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293338792] [2023-08-04 03:25:38,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:25:38,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:25:38,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:25:38,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:25:38,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:25:38,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 553 [2023-08-04 03:25:38,166 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 03:25:38,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:25:38,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 553 [2023-08-04 03:25:38,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:26:43,563 INFO L124 PetriNetUnfolderBase]: 713818/878328 cut-off events. [2023-08-04 03:26:43,563 INFO L125 PetriNetUnfolderBase]: For 41229/41229 co-relation queries the response was YES. [2023-08-04 03:26:46,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1794159 conditions, 878328 events. 713818/878328 cut-off events. For 41229/41229 co-relation queries the response was YES. Maximal size of possible extension queue 16920. Compared 5273890 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 03:26:49,747 INFO L140 encePairwiseOnDemand]: 550/553 looper letters, 92 selfloop transitions, 2 changer transitions 0/106 dead transitions. [2023-08-04 03:26:49,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 106 transitions, 507 flow [2023-08-04 03:26:49,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:26:49,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:26:49,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-04 03:26:49,750 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713682941531043 [2023-08-04 03:26:49,750 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-04 03:26:49,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-04 03:26:49,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:26:49,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-04 03:26:49,752 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 03:26:49,767 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:26:49,769 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:26:49,769 INFO L175 Difference]: Start difference. First operand has 68 places, 80 transitions, 252 flow. Second operand 3 states and 782 transitions. [2023-08-04 03:26:49,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 106 transitions, 507 flow [2023-08-04 03:26:49,823 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 03:26:49,824 INFO L231 Difference]: Finished difference. Result has 70 places, 81 transitions, 262 flow [2023-08-04 03:26:49,825 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, 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 03:26:49,826 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 2 predicate places. [2023-08-04 03:26:49,826 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 81 transitions, 262 flow [2023-08-04 03:26:49,826 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 03:26:49,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:26:49,826 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 03:26:49,835 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 03:26:50,032 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 03:26:50,033 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:26:50,033 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:26:50,033 INFO L85 PathProgramCache]: Analyzing trace with hash 1622016921, now seen corresponding path program 1 times [2023-08-04 03:26:50,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:26:50,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287442313] [2023-08-04 03:26:50,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:50,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:26:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:50,090 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 03:26:50,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:26:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287442313] [2023-08-04 03:26:50,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287442313] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:26:50,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1964776397] [2023-08-04 03:26:50,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:50,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:26:50,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:26:50,092 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 03:26:50,095 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 03:26:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:50,210 INFO L262 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:26:50,214 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:26:50,221 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 03:26:50,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:26:50,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1964776397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:26:50,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:26:50,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 03:26:50,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447994475] [2023-08-04 03:26:50,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:26:50,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:26:50,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:26:50,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:26:50,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:26:50,232 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 553 [2023-08-04 03:26:50,233 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 03:26:50,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:26:50,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 553 [2023-08-04 03:26:50,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:27:53,967 INFO L124 PetriNetUnfolderBase]: 642658/795332 cut-off events. [2023-08-04 03:27:53,967 INFO L125 PetriNetUnfolderBase]: For 92987/92987 co-relation queries the response was YES. [2023-08-04 03:27:56,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1669110 conditions, 795332 events. 642658/795332 cut-off events. For 92987/92987 co-relation queries the response was YES. Maximal size of possible extension queue 13311. Compared 4769814 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 03:27:59,717 INFO L140 encePairwiseOnDemand]: 550/553 looper letters, 93 selfloop transitions, 2 changer transitions 0/107 dead transitions. [2023-08-04 03:27:59,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 107 transitions, 519 flow [2023-08-04 03:27:59,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:27:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:27:59,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 782 transitions. [2023-08-04 03:27:59,719 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4713682941531043 [2023-08-04 03:27:59,719 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 782 transitions. [2023-08-04 03:27:59,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 782 transitions. [2023-08-04 03:27:59,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:27:59,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 782 transitions. [2023-08-04 03:27:59,721 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 03:27:59,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:27:59,723 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 553.0) internal successors, (2212), 4 states have internal predecessors, (2212), 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 03:27:59,723 INFO L175 Difference]: Start difference. First operand has 70 places, 81 transitions, 262 flow. Second operand 3 states and 782 transitions. [2023-08-04 03:27:59,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 107 transitions, 519 flow [2023-08-04 03:28:11,267 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 03:28:11,269 INFO L231 Difference]: Finished difference. Result has 72 places, 82 transitions, 272 flow [2023-08-04 03:28:11,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=553, 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 03:28:11,269 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-04 03:28:11,269 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 82 transitions, 272 flow [2023-08-04 03:28:11,270 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 03:28:11,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:28:11,270 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 03:28:11,275 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 03:28:11,472 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 03:28:11,472 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 03:28:11,473 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:28:11,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1353372596, now seen corresponding path program 1 times [2023-08-04 03:28:11,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:28:11,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579680490] [2023-08-04 03:28:11,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:28:11,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:28:11,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:28:11,534 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 03:28:11,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:28:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579680490] [2023-08-04 03:28:11,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579680490] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:28:11,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037398113] [2023-08-04 03:28:11,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:28:11,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:28:11,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:28:11,536 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 03:28:11,572 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 03:28:11,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:28:11,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 03:28:11,672 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:28:11,681 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 03:28:11,681 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:28:11,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037398113] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:28:11,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:28:11,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-04 03:28:11,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282960526] [2023-08-04 03:28:11,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:28:11,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:28:11,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:28:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:28:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 03:28:11,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 230 out of 553 [2023-08-04 03:28:11,692 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 03:28:11,692 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:28:11,692 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 230 of 553 [2023-08-04 03:28:11,692 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 03:28:51,438 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 03:28:51,439 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 03:28:52,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 [2023-08-04 03:28:52,455 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 03:28:53,053 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-08-04 03:28:53,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-04 03:28:53,053 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-04 03:28:53,053 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-04 03:28:53,054 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was TIMEOUT (2/2) [2023-08-04 03:28:53,054 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 03:28:53,055 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 03:28:53,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 03:28:53 BasicIcfg [2023-08-04 03:28:53,058 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 03:28:53,059 INFO L158 Benchmark]: Toolchain (without parser) took 620315.81ms. Allocated memory was 450.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 401.9MB in the beginning and 12.4GB in the end (delta: -12.0GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-04 03:28:53,059 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 329.3MB. Free memory was 282.7MB in the beginning and 282.6MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:28:53,059 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.80ms. Allocated memory is still 450.9MB. Free memory was 401.6MB in the beginning and 389.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-04 03:28:53,059 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.36ms. Allocated memory is still 450.9MB. Free memory was 389.3MB in the beginning and 386.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:28:53,059 INFO L158 Benchmark]: Boogie Preprocessor took 47.92ms. Allocated memory is still 450.9MB. Free memory was 386.7MB in the beginning and 384.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 03:28:53,060 INFO L158 Benchmark]: RCFGBuilder took 668.85ms. Allocated memory is still 450.9MB. Free memory was 384.6MB in the beginning and 397.2MB in the end (delta: -12.7MB). Peak memory consumption was 23.7MB. Max. memory is 16.0GB. [2023-08-04 03:28:53,060 INFO L158 Benchmark]: TraceAbstraction took 619310.74ms. Allocated memory was 450.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 396.5MB in the beginning and 12.4GB in the end (delta: -12.0GB). Peak memory consumption was 8.3GB. Max. memory is 16.0GB. [2023-08-04 03:28:53,061 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 329.3MB. Free memory was 282.7MB in the beginning and 282.6MB in the end (delta: 169.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 238.80ms. Allocated memory is still 450.9MB. Free memory was 401.6MB in the beginning and 389.3MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.36ms. Allocated memory is still 450.9MB. Free memory was 389.3MB in the beginning and 386.7MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 47.92ms. Allocated memory is still 450.9MB. Free memory was 386.7MB in the beginning and 384.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 668.85ms. Allocated memory is still 450.9MB. Free memory was 384.6MB in the beginning and 397.2MB in the end (delta: -12.7MB). Peak memory consumption was 23.7MB. Max. memory is 16.0GB. * TraceAbstraction took 619310.74ms. Allocated memory was 450.9MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 396.5MB in the beginning and 12.4GB in the end (delta: -12.0GB). 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: 7.4s, 223 PlacesBefore, 46 PlacesAfterwards, 249 TransitionsBefore, 55 TransitionsAfterwards, 5638 CoEnabledTransitionPairs, 7 FixpointIterations, 108 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 25 ConcurrentYvCompositions, 17 ChoiceCompositions, 233 TotalNumberOfCompositions, 11178 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7956, independent: 7822, independent conditional: 0, independent unconditional: 7822, dependent: 134, dependent conditional: 0, dependent unconditional: 134, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3058, independent: 3025, independent conditional: 0, independent unconditional: 3025, dependent: 33, dependent conditional: 0, dependent unconditional: 33, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7956, independent: 4797, independent conditional: 0, independent unconditional: 4797, dependent: 101, dependent conditional: 0, dependent unconditional: 101, unknown: 3058, unknown conditional: 0, unknown unconditional: 3058] , Statistics on independence cache: Total cache size (in pairs): 255, Positive cache size: 244, Positive conditional cache size: 0, Positive unconditional cache size: 244, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3s, 256 PlacesBefore, 68 PlacesAfterwards, 293 TransitionsBefore, 85 TransitionsAfterwards, 14672 CoEnabledTransitionPairs, 7 FixpointIterations, 107 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 34 ConcurrentYvCompositions, 20 ChoiceCompositions, 256 TotalNumberOfCompositions, 38964 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 26994, independent: 26721, independent conditional: 0, independent unconditional: 26721, dependent: 273, dependent conditional: 0, dependent unconditional: 273, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8252, independent: 8202, independent conditional: 0, independent unconditional: 8202, dependent: 50, dependent conditional: 0, dependent unconditional: 50, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 26994, independent: 18519, independent conditional: 0, independent unconditional: 18519, dependent: 223, dependent conditional: 0, dependent unconditional: 223, unknown: 8252, unknown conditional: 0, unknown unconditional: 8252] , Statistics on independence cache: Total cache size (in pairs): 1011, Positive cache size: 996, Positive conditional cache size: 0, Positive unconditional cache size: 996, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.2s, 256 PlacesBefore, 68 PlacesAfterwards, 293 TransitionsBefore, 85 TransitionsAfterwards, 14672 CoEnabledTransitionPairs, 8 FixpointIterations, 111 TrivialSequentialCompositions, 73 ConcurrentSequentialCompositions, 22 TrivialYvCompositions, 34 ConcurrentYvCompositions, 20 ChoiceCompositions, 260 TotalNumberOfCompositions, 41865 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 27249, independent: 26943, independent conditional: 0, independent unconditional: 26943, dependent: 306, dependent conditional: 0, dependent unconditional: 306, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 8134, independent: 8086, independent conditional: 0, independent unconditional: 8086, dependent: 48, dependent conditional: 0, dependent unconditional: 48, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 27249, independent: 18857, independent conditional: 0, independent unconditional: 18857, dependent: 258, dependent conditional: 0, dependent unconditional: 258, unknown: 8134, unknown conditional: 0, unknown unconditional: 8134] , Statistics on independence cache: Total cache size (in pairs): 925, Positive cache size: 910, Positive conditional cache size: 0, Positive unconditional cache size: 910, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 126]: 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: 8.1s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.7s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=152occurred 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: 151.5s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 140.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 387 SdHoareTripleChecker+Valid, 0.6s 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, 1118 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: 459.6s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 450.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 192 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 18 SdHoareTripleChecker+Invalid, 0.5s 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, 0.3s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 222 ConstructedInterpolants, 0 QuantifiedInterpolants, 292 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1115 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