/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:17:10,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:17:10,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:17:10,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:17:10,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:17:10,827 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:17:10,829 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:17:10,831 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:17:10,834 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:17:10,837 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:17:10,838 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:17:10,840 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:17:10,840 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:17:10,842 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:17:10,842 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:17:10,843 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:17:10,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:17:10,844 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:17:10,846 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:17:10,850 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:17:10,851 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:17:10,852 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:17:10,853 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:17:10,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:17:10,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:17:10,860 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-27 18:17:10,861 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-27 18:17:10,862 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-27 18:17:10,862 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-27 18:17:10,862 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-27 18:17:10,863 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-27 18:17:10,863 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-27 18:17:10,863 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-27 18:17:10,863 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:17:10,864 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:17:10,864 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:17:10,865 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 18:17:10,886 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:17:10,887 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:17:10,887 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:17:10,887 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:17:10,888 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:17:10,888 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:17:10,888 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:17:10,888 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:17:10,889 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:17:10,890 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:17:10,890 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:17:10,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:17:10,891 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:17:10,891 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:17:10,891 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:17:10,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:17:10,891 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:17:11,074 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:17:11,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:17:11,093 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:17:11,093 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:17:11,094 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:17:11,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-01-27 18:17:12,051 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:17:12,263 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:17:12,263 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i [2023-01-27 18:17:12,271 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d36e9c79/a590d2883fdf4cca882efcbfe5805307/FLAGd48741cfd [2023-01-27 18:17:12,280 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d36e9c79/a590d2883fdf4cca882efcbfe5805307 [2023-01-27 18:17:12,282 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:17:12,283 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:17:12,283 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:17:12,283 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:17:12,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:17:12,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dcb4613 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12, skipping insertion in model container [2023-01-27 18:17:12,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,291 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:17:12,318 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:17:12,406 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2023-01-27 18:17:12,483 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:17:12,489 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:17:12,497 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe004_tso.i[945,958] [2023-01-27 18:17:12,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:17:12,531 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:17:12,531 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:17:12,535 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:17:12,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12 WrapperNode [2023-01-27 18:17:12,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:17:12,536 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:17:12,537 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:17:12,537 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:17:12,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,562 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 70 [2023-01-27 18:17:12,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:17:12,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:17:12,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:17:12,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:17:12,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,576 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,577 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,578 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,579 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:17:12,580 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:17:12,580 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:17:12,580 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:17:12,581 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (1/1) ... [2023-01-27 18:17:12,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:17:12,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:17:12,617 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) [2023-01-27 18:17:12,622 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 [2023-01-27 18:17:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:17:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:17:12,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:17:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:17:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:17:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:17:12,655 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:17:12,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:17:12,656 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 18:17:12,754 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:17:12,756 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:17:12,879 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:17:12,899 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:17:12,900 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:17:12,901 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:17:12 BoogieIcfgContainer [2023-01-27 18:17:12,901 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:17:12,903 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:17:12,903 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:17:12,905 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:17:12,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:17:12" (1/3) ... [2023-01-27 18:17:12,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a55b0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:17:12, skipping insertion in model container [2023-01-27 18:17:12,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:17:12" (2/3) ... [2023-01-27 18:17:12,906 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7a55b0dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:17:12, skipping insertion in model container [2023-01-27 18:17:12,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:17:12" (3/3) ... [2023-01-27 18:17:12,907 INFO L112 eAbstractionObserver]: Analyzing ICFG safe004_tso.i [2023-01-27 18:17:12,928 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:17:12,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:17:12,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:17:13,009 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:17:13,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:17:13,092 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-27 18:17:13,093 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:17:13,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 81 events. 2/81 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 48 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2023-01-27 18:17:13,098 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:17:13,103 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-27 18:17:13,105 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:17:13,128 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:17:13,130 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:17:13,131 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-27 18:17:13,150 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-27 18:17:13,150 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:17:13,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 69 events. 1/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 39 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 52. Up to 2 conditions per place. [2023-01-27 18:17:13,151 INFO L119 LiptonReduction]: Number of co-enabled transitions 1044 [2023-01-27 18:17:14,611 INFO L134 LiptonReduction]: Checked pairs total: 1941 [2023-01-27 18:17:14,612 INFO L136 LiptonReduction]: Total number of compositions: 55 [2023-01-27 18:17:14,621 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:17:14,626 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=false, 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;@63d7707c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:17:14,626 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:17:14,630 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2023-01-27 18:17:14,630 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:17:14,630 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:14,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:14,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:14,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:14,635 INFO L85 PathProgramCache]: Analyzing trace with hash -856354579, now seen corresponding path program 1 times [2023-01-27 18:17:14,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:14,641 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815940416] [2023-01-27 18:17:14,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:14,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:15,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:15,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:15,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815940416] [2023-01-27 18:17:15,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815940416] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:15,084 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:15,084 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:17:15,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335916904] [2023-01-27 18:17:15,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:15,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:17:15,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:15,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:17:15,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:17:15,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:15,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 17 transitions, 43 flow. Second operand has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-01-27 18:17:15,134 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:15,134 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:15,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:15,267 INFO L130 PetriNetUnfolder]: 522/834 cut-off events. [2023-01-27 18:17:15,267 INFO L131 PetriNetUnfolder]: For 17/17 co-relation queries the response was YES. [2023-01-27 18:17:15,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1723 conditions, 834 events. 522/834 cut-off events. For 17/17 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3544 event pairs, 281 based on Foata normal form. 61/895 useless extension candidates. Maximal degree in co-relation 1712. Up to 589 conditions per place. [2023-01-27 18:17:15,274 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 24 selfloop transitions, 7 changer transitions 0/31 dead transitions. [2023-01-27 18:17:15,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 31 transitions, 139 flow [2023-01-27 18:17:15,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:17:15,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:17:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 233 transitions. [2023-01-27 18:17:15,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587529976019184 [2023-01-27 18:17:15,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 233 transitions. [2023-01-27 18:17:15,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 233 transitions. [2023-01-27 18:17:15,287 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:15,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 233 transitions. [2023-01-27 18:17:15,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 77.66666666666667) internal successors, (233), 3 states have internal predecessors, (233), 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) [2023-01-27 18:17:15,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-01-27 18:17:15,296 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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) [2023-01-27 18:17:15,297 INFO L175 Difference]: Start difference. First operand has 27 places, 17 transitions, 43 flow. Second operand 3 states and 233 transitions. [2023-01-27 18:17:15,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 31 transitions, 139 flow [2023-01-27 18:17:15,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 31 transitions, 134 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:17:15,302 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 94 flow [2023-01-27 18:17:15,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=94, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-27 18:17:15,307 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-01-27 18:17:15,307 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 94 flow [2023-01-27 18:17:15,308 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.66666666666667) internal successors, (209), 3 states have internal predecessors, (209), 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) [2023-01-27 18:17:15,308 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:15,308 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:15,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:17:15,309 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:15,309 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:15,309 INFO L85 PathProgramCache]: Analyzing trace with hash -777188759, now seen corresponding path program 1 times [2023-01-27 18:17:15,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:15,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583958513] [2023-01-27 18:17:15,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:15,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:15,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:15,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:15,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583958513] [2023-01-27 18:17:15,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583958513] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:15,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:15,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:17:15,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865775378] [2023-01-27 18:17:15,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:15,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:17:15,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:15,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:17:15,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:17:15,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:15,528 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 94 flow. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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) [2023-01-27 18:17:15,528 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:15,528 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:15,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:15,589 INFO L130 PetriNetUnfolder]: 437/702 cut-off events. [2023-01-27 18:17:15,590 INFO L131 PetriNetUnfolder]: For 336/336 co-relation queries the response was YES. [2023-01-27 18:17:15,591 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2044 conditions, 702 events. 437/702 cut-off events. For 336/336 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2718 event pairs, 160 based on Foata normal form. 14/716 useless extension candidates. Maximal degree in co-relation 2032. Up to 331 conditions per place. [2023-01-27 18:17:15,593 INFO L137 encePairwiseOnDemand]: 132/139 looper letters, 29 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2023-01-27 18:17:15,593 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 224 flow [2023-01-27 18:17:15,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:17:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:17:15,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 301 transitions. [2023-01-27 18:17:15,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5413669064748201 [2023-01-27 18:17:15,597 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 301 transitions. [2023-01-27 18:17:15,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 301 transitions. [2023-01-27 18:17:15,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:15,597 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 301 transitions. [2023-01-27 18:17:15,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 75.25) internal successors, (301), 4 states have internal predecessors, (301), 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) [2023-01-27 18:17:15,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-01-27 18:17:15,601 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-01-27 18:17:15,601 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 94 flow. Second operand 4 states and 301 transitions. [2023-01-27 18:17:15,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 224 flow [2023-01-27 18:17:15,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 38 transitions, 202 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:17:15,605 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 134 flow [2023-01-27 18:17:15,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=134, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-27 18:17:15,606 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-01-27 18:17:15,606 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 134 flow [2023-01-27 18:17:15,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 4 states have internal predecessors, (277), 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) [2023-01-27 18:17:15,607 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:15,607 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:15,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:17:15,607 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:15,608 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:15,608 INFO L85 PathProgramCache]: Analyzing trace with hash 445173533, now seen corresponding path program 1 times [2023-01-27 18:17:15,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:15,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249712652] [2023-01-27 18:17:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:15,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:15,743 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:15,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:15,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249712652] [2023-01-27 18:17:15,743 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249712652] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:15,743 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:15,743 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:17:15,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798151965] [2023-01-27 18:17:15,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:15,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:17:15,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:15,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:17:15,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:17:15,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:15,747 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 134 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2023-01-27 18:17:15,747 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:15,747 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:15,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:15,855 INFO L130 PetriNetUnfolder]: 428/687 cut-off events. [2023-01-27 18:17:15,855 INFO L131 PetriNetUnfolder]: For 456/456 co-relation queries the response was YES. [2023-01-27 18:17:15,859 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2159 conditions, 687 events. 428/687 cut-off events. For 456/456 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2682 event pairs, 78 based on Foata normal form. 2/689 useless extension candidates. Maximal degree in co-relation 2144. Up to 460 conditions per place. [2023-01-27 18:17:15,861 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 35 selfloop transitions, 14 changer transitions 3/52 dead transitions. [2023-01-27 18:17:15,861 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 52 transitions, 344 flow [2023-01-27 18:17:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:17:15,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:17:15,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 310 transitions. [2023-01-27 18:17:15,862 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5575539568345323 [2023-01-27 18:17:15,862 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 310 transitions. [2023-01-27 18:17:15,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 310 transitions. [2023-01-27 18:17:15,863 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:15,863 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 310 transitions. [2023-01-27 18:17:15,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.5) internal successors, (310), 4 states have internal predecessors, (310), 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) [2023-01-27 18:17:15,864 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-01-27 18:17:15,864 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-01-27 18:17:15,864 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 134 flow. Second operand 4 states and 310 transitions. [2023-01-27 18:17:15,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 52 transitions, 344 flow [2023-01-27 18:17:15,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 52 transitions, 339 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:17:15,869 INFO L231 Difference]: Finished difference. Result has 37 places, 33 transitions, 238 flow [2023-01-27 18:17:15,869 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=238, PETRI_PLACES=37, PETRI_TRANSITIONS=33} [2023-01-27 18:17:15,870 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-27 18:17:15,872 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 33 transitions, 238 flow [2023-01-27 18:17:15,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2023-01-27 18:17:15,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:15,873 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:15,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:17:15,873 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:15,873 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:15,873 INFO L85 PathProgramCache]: Analyzing trace with hash 445173564, now seen corresponding path program 1 times [2023-01-27 18:17:15,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:15,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715884952] [2023-01-27 18:17:15,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:15,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:15,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:15,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:15,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:15,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715884952] [2023-01-27 18:17:15,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715884952] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:15,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:15,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:17:15,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719368824] [2023-01-27 18:17:15,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:15,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:17:15,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:15,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:17:15,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:17:15,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:15,985 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 33 transitions, 238 flow. Second operand has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2023-01-27 18:17:15,985 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:15,985 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:15,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:16,045 INFO L130 PetriNetUnfolder]: 329/550 cut-off events. [2023-01-27 18:17:16,045 INFO L131 PetriNetUnfolder]: For 901/901 co-relation queries the response was YES. [2023-01-27 18:17:16,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2003 conditions, 550 events. 329/550 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2139 event pairs, 68 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 1984. Up to 386 conditions per place. [2023-01-27 18:17:16,048 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 34 selfloop transitions, 17 changer transitions 4/55 dead transitions. [2023-01-27 18:17:16,048 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 55 transitions, 468 flow [2023-01-27 18:17:16,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:17:16,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:17:16,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 308 transitions. [2023-01-27 18:17:16,049 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-27 18:17:16,049 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 308 transitions. [2023-01-27 18:17:16,050 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 308 transitions. [2023-01-27 18:17:16,052 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:16,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 308 transitions. [2023-01-27 18:17:16,053 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 77.0) internal successors, (308), 4 states have internal predecessors, (308), 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) [2023-01-27 18:17:16,054 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-01-27 18:17:16,054 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 139.0) internal successors, (695), 5 states have internal predecessors, (695), 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) [2023-01-27 18:17:16,054 INFO L175 Difference]: Start difference. First operand has 37 places, 33 transitions, 238 flow. Second operand 4 states and 308 transitions. [2023-01-27 18:17:16,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 55 transitions, 468 flow [2023-01-27 18:17:16,058 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 55 transitions, 468 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:17:16,059 INFO L231 Difference]: Finished difference. Result has 43 places, 37 transitions, 358 flow [2023-01-27 18:17:16,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=358, PETRI_PLACES=43, PETRI_TRANSITIONS=37} [2023-01-27 18:17:16,060 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 16 predicate places. [2023-01-27 18:17:16,060 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 37 transitions, 358 flow [2023-01-27 18:17:16,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.75) internal successors, (279), 4 states have internal predecessors, (279), 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) [2023-01-27 18:17:16,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:16,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:16,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:17:16,061 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:16,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:16,061 INFO L85 PathProgramCache]: Analyzing trace with hash 916515859, now seen corresponding path program 1 times [2023-01-27 18:17:16,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:16,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563371560] [2023-01-27 18:17:16,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:16,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:16,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:16,174 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:16,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:16,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563371560] [2023-01-27 18:17:16,174 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563371560] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:16,174 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:16,174 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:17:16,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180847923] [2023-01-27 18:17:16,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:16,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:17:16,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:16,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:17:16,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:17:16,176 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:16,176 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 37 transitions, 358 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-01-27 18:17:16,176 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:16,176 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:16,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:16,287 INFO L130 PetriNetUnfolder]: 334/585 cut-off events. [2023-01-27 18:17:16,287 INFO L131 PetriNetUnfolder]: For 1631/1631 co-relation queries the response was YES. [2023-01-27 18:17:16,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2368 conditions, 585 events. 334/585 cut-off events. For 1631/1631 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2457 event pairs, 66 based on Foata normal form. 6/591 useless extension candidates. Maximal degree in co-relation 2344. Up to 179 conditions per place. [2023-01-27 18:17:16,290 INFO L137 encePairwiseOnDemand]: 131/139 looper letters, 27 selfloop transitions, 16 changer transitions 29/72 dead transitions. [2023-01-27 18:17:16,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 645 flow [2023-01-27 18:17:16,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:17:16,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:17:16,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2023-01-27 18:17:16,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5467625899280576 [2023-01-27 18:17:16,291 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2023-01-27 18:17:16,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2023-01-27 18:17:16,292 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:16,292 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2023-01-27 18:17:16,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 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) [2023-01-27 18:17:16,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:16,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:16,295 INFO L175 Difference]: Start difference. First operand has 43 places, 37 transitions, 358 flow. Second operand 7 states and 532 transitions. [2023-01-27 18:17:16,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 645 flow [2023-01-27 18:17:16,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 645 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:17:16,301 INFO L231 Difference]: Finished difference. Result has 51 places, 31 transitions, 325 flow [2023-01-27 18:17:16,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=51, PETRI_TRANSITIONS=31} [2023-01-27 18:17:16,303 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 24 predicate places. [2023-01-27 18:17:16,303 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 31 transitions, 325 flow [2023-01-27 18:17:16,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-01-27 18:17:16,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:16,303 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:16,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:17:16,304 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:16,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:16,304 INFO L85 PathProgramCache]: Analyzing trace with hash 916486099, now seen corresponding path program 2 times [2023-01-27 18:17:16,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:16,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210800096] [2023-01-27 18:17:16,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:16,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:16,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:16,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210800096] [2023-01-27 18:17:16,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210800096] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:16,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:16,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:17:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906654814] [2023-01-27 18:17:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:16,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:17:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:17:16,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:17:16,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:16,410 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 31 transitions, 325 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-01-27 18:17:16,410 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:16,410 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:16,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:16,462 INFO L130 PetriNetUnfolder]: 230/409 cut-off events. [2023-01-27 18:17:16,462 INFO L131 PetriNetUnfolder]: For 1696/1696 co-relation queries the response was YES. [2023-01-27 18:17:16,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1772 conditions, 409 events. 230/409 cut-off events. For 1696/1696 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1579 event pairs, 50 based on Foata normal form. 10/419 useless extension candidates. Maximal degree in co-relation 1744. Up to 264 conditions per place. [2023-01-27 18:17:16,464 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 22 selfloop transitions, 6 changer transitions 18/46 dead transitions. [2023-01-27 18:17:16,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 46 transitions, 491 flow [2023-01-27 18:17:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:17:16,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:17:16,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 371 transitions. [2023-01-27 18:17:16,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5338129496402878 [2023-01-27 18:17:16,466 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 371 transitions. [2023-01-27 18:17:16,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 371 transitions. [2023-01-27 18:17:16,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:16,466 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 371 transitions. [2023-01-27 18:17:16,467 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 74.2) internal successors, (371), 5 states have internal predecessors, (371), 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) [2023-01-27 18:17:16,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-01-27 18:17:16,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-01-27 18:17:16,468 INFO L175 Difference]: Start difference. First operand has 51 places, 31 transitions, 325 flow. Second operand 5 states and 371 transitions. [2023-01-27 18:17:16,468 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 46 transitions, 491 flow [2023-01-27 18:17:16,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 444 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-01-27 18:17:16,473 INFO L231 Difference]: Finished difference. Result has 50 places, 19 transitions, 154 flow [2023-01-27 18:17:16,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=285, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=154, PETRI_PLACES=50, PETRI_TRANSITIONS=19} [2023-01-27 18:17:16,475 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 23 predicate places. [2023-01-27 18:17:16,475 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 19 transitions, 154 flow [2023-01-27 18:17:16,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 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) [2023-01-27 18:17:16,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:16,475 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:16,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:17:16,475 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:16,476 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:16,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1653915931, now seen corresponding path program 1 times [2023-01-27 18:17:16,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:16,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606711609] [2023-01-27 18:17:16,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:16,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:16,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:16,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:16,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606711609] [2023-01-27 18:17:16,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606711609] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:16,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:16,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:17:16,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829759570] [2023-01-27 18:17:16,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:16,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:17:16,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:16,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:17:16,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:17:16,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 139 [2023-01-27 18:17:16,617 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 19 transitions, 154 flow. Second operand has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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) [2023-01-27 18:17:16,617 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:16,617 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 139 [2023-01-27 18:17:16,617 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:16,668 INFO L130 PetriNetUnfolder]: 120/229 cut-off events. [2023-01-27 18:17:16,669 INFO L131 PetriNetUnfolder]: For 894/894 co-relation queries the response was YES. [2023-01-27 18:17:16,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 933 conditions, 229 events. 120/229 cut-off events. For 894/894 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 743 event pairs, 46 based on Foata normal form. 4/233 useless extension candidates. Maximal degree in co-relation 906. Up to 98 conditions per place. [2023-01-27 18:17:16,670 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 20 selfloop transitions, 5 changer transitions 8/33 dead transitions. [2023-01-27 18:17:16,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 33 transitions, 292 flow [2023-01-27 18:17:16,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:17:16,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:17:16,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 367 transitions. [2023-01-27 18:17:16,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5280575539568345 [2023-01-27 18:17:16,672 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 367 transitions. [2023-01-27 18:17:16,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 367 transitions. [2023-01-27 18:17:16,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:16,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 367 transitions. [2023-01-27 18:17:16,673 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:16,673 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-01-27 18:17:16,675 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-01-27 18:17:16,675 INFO L175 Difference]: Start difference. First operand has 50 places, 19 transitions, 154 flow. Second operand 5 states and 367 transitions. [2023-01-27 18:17:16,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 33 transitions, 292 flow [2023-01-27 18:17:16,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 33 transitions, 195 flow, removed 6 selfloop flow, removed 18 redundant places. [2023-01-27 18:17:16,677 INFO L231 Difference]: Finished difference. Result has 37 places, 17 transitions, 87 flow [2023-01-27 18:17:16,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=87, PETRI_PLACES=37, PETRI_TRANSITIONS=17} [2023-01-27 18:17:16,678 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-27 18:17:16,678 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 17 transitions, 87 flow [2023-01-27 18:17:16,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.6) internal successors, (348), 5 states have internal predecessors, (348), 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) [2023-01-27 18:17:16,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:16,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:16,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:17:16,679 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:16,679 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:16,679 INFO L85 PathProgramCache]: Analyzing trace with hash -259012253, now seen corresponding path program 2 times [2023-01-27 18:17:16,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:16,679 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212171314] [2023-01-27 18:17:16,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:16,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:16,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:16,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212171314] [2023-01-27 18:17:16,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212171314] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:16,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:16,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:17:16,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879244822] [2023-01-27 18:17:16,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:16,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:17:16,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:16,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:17:16,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:17:16,849 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:17:16,850 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 17 transitions, 87 flow. Second operand has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2023-01-27 18:17:16,850 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:16,850 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:17:16,850 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:16,888 INFO L130 PetriNetUnfolder]: 46/116 cut-off events. [2023-01-27 18:17:16,888 INFO L131 PetriNetUnfolder]: For 162/165 co-relation queries the response was YES. [2023-01-27 18:17:16,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 116 events. 46/116 cut-off events. For 162/165 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 371 event pairs, 16 based on Foata normal form. 4/118 useless extension candidates. Maximal degree in co-relation 331. Up to 62 conditions per place. [2023-01-27 18:17:16,888 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 17 selfloop transitions, 3 changer transitions 13/36 dead transitions. [2023-01-27 18:17:16,889 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 36 transitions, 230 flow [2023-01-27 18:17:16,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:17:16,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:17:16,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-27 18:17:16,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5611510791366906 [2023-01-27 18:17:16,890 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-27 18:17:16,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-27 18:17:16,890 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:16,890 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-27 18:17:16,891 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 78.0) internal successors, (390), 5 states have internal predecessors, (390), 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) [2023-01-27 18:17:16,892 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-01-27 18:17:16,892 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 139.0) internal successors, (834), 6 states have internal predecessors, (834), 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) [2023-01-27 18:17:16,892 INFO L175 Difference]: Start difference. First operand has 37 places, 17 transitions, 87 flow. Second operand 5 states and 390 transitions. [2023-01-27 18:17:16,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 36 transitions, 230 flow [2023-01-27 18:17:16,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 36 transitions, 181 flow, removed 6 selfloop flow, removed 7 redundant places. [2023-01-27 18:17:16,893 INFO L231 Difference]: Finished difference. Result has 37 places, 19 transitions, 92 flow [2023-01-27 18:17:16,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=61, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=37, PETRI_TRANSITIONS=19} [2023-01-27 18:17:16,895 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 10 predicate places. [2023-01-27 18:17:16,895 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 19 transitions, 92 flow [2023-01-27 18:17:16,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.75) internal successors, (295), 4 states have internal predecessors, (295), 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) [2023-01-27 18:17:16,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:16,895 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:16,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:17:16,912 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:16,912 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:16,912 INFO L85 PathProgramCache]: Analyzing trace with hash 1256682117, now seen corresponding path program 1 times [2023-01-27 18:17:16,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:16,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019933336] [2023-01-27 18:17:16,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:16,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:16,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:17,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:17,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:17,039 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019933336] [2023-01-27 18:17:17,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019933336] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:17,039 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:17,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:17:17,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010250109] [2023-01-27 18:17:17,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:17,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:17:17,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:17,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:17:17,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:17:17,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:17:17,041 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 19 transitions, 92 flow. Second operand has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:17,041 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:17,041 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:17:17,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:17,075 INFO L130 PetriNetUnfolder]: 24/70 cut-off events. [2023-01-27 18:17:17,075 INFO L131 PetriNetUnfolder]: For 96/109 co-relation queries the response was YES. [2023-01-27 18:17:17,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 70 events. 24/70 cut-off events. For 96/109 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 174 event pairs, 3 based on Foata normal form. 5/74 useless extension candidates. Maximal degree in co-relation 233. Up to 40 conditions per place. [2023-01-27 18:17:17,075 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 16 selfloop transitions, 5 changer transitions 13/37 dead transitions. [2023-01-27 18:17:17,075 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 37 transitions, 250 flow [2023-01-27 18:17:17,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:17:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:17:17,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 462 transitions. [2023-01-27 18:17:17,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5539568345323741 [2023-01-27 18:17:17,077 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 462 transitions. [2023-01-27 18:17:17,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 462 transitions. [2023-01-27 18:17:17,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:17,077 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 462 transitions. [2023-01-27 18:17:17,078 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.0) internal successors, (462), 6 states have internal predecessors, (462), 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) [2023-01-27 18:17:17,079 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2023-01-27 18:17:17,079 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2023-01-27 18:17:17,079 INFO L175 Difference]: Start difference. First operand has 37 places, 19 transitions, 92 flow. Second operand 6 states and 462 transitions. [2023-01-27 18:17:17,079 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 37 transitions, 250 flow [2023-01-27 18:17:17,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 37 transitions, 245 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:17:17,080 INFO L231 Difference]: Finished difference. Result has 41 places, 19 transitions, 111 flow [2023-01-27 18:17:17,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=111, PETRI_PLACES=41, PETRI_TRANSITIONS=19} [2023-01-27 18:17:17,082 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 14 predicate places. [2023-01-27 18:17:17,082 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 19 transitions, 111 flow [2023-01-27 18:17:17,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.4) internal successors, (367), 5 states have internal predecessors, (367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:17,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:17:17,082 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:17,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:17:17,083 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-01-27 18:17:17,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:17:17,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1940925946, now seen corresponding path program 1 times [2023-01-27 18:17:17,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:17:17,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114929884] [2023-01-27 18:17:17,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:17:17,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:17:17,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:17:17,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 18:17:17,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:17:17,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114929884] [2023-01-27 18:17:17,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114929884] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:17:17,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:17:17,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:17:17,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520676425] [2023-01-27 18:17:17,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:17:17,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:17:17,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:17:17,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:17:17,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:17:17,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 139 [2023-01-27 18:17:17,217 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 19 transitions, 111 flow. Second operand has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-01-27 18:17:17,217 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:17:17,217 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 139 [2023-01-27 18:17:17,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:17:17,245 INFO L130 PetriNetUnfolder]: 11/41 cut-off events. [2023-01-27 18:17:17,245 INFO L131 PetriNetUnfolder]: For 108/115 co-relation queries the response was YES. [2023-01-27 18:17:17,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 41 events. 11/41 cut-off events. For 108/115 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 69 event pairs, 2 based on Foata normal form. 4/44 useless extension candidates. Maximal degree in co-relation 152. Up to 17 conditions per place. [2023-01-27 18:17:17,246 INFO L137 encePairwiseOnDemand]: 133/139 looper letters, 0 selfloop transitions, 0 changer transitions 26/26 dead transitions. [2023-01-27 18:17:17,246 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 26 transitions, 185 flow [2023-01-27 18:17:17,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:17:17,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:17:17,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 521 transitions. [2023-01-27 18:17:17,247 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5354573484069887 [2023-01-27 18:17:17,248 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 521 transitions. [2023-01-27 18:17:17,248 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 521 transitions. [2023-01-27 18:17:17,248 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:17:17,248 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 521 transitions. [2023-01-27 18:17:17,249 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 74.42857142857143) internal successors, (521), 7 states have internal predecessors, (521), 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) [2023-01-27 18:17:17,250 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:17,251 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 139.0) internal successors, (1112), 8 states have internal predecessors, (1112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:17:17,251 INFO L175 Difference]: Start difference. First operand has 41 places, 19 transitions, 111 flow. Second operand 7 states and 521 transitions. [2023-01-27 18:17:17,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 26 transitions, 185 flow [2023-01-27 18:17:17,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 26 transitions, 153 flow, removed 8 selfloop flow, removed 6 redundant places. [2023-01-27 18:17:17,252 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2023-01-27 18:17:17,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=139, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2023-01-27 18:17:17,253 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 11 predicate places. [2023-01-27 18:17:17,253 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2023-01-27 18:17:17,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.16666666666667) internal successors, (439), 6 states have internal predecessors, (439), 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) [2023-01-27 18:17:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:17:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:17:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:17:17,256 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:17:17,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:17:17,257 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-01-27 18:17:17,259 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:17:17,259 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:17:17,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:17:17 BasicIcfg [2023-01-27 18:17:17,261 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:17:17,261 INFO L158 Benchmark]: Toolchain (without parser) took 4979.03ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 519.3MB in the beginning and 526.9MB in the end (delta: -7.6MB). Peak memory consumption was 108.3MB. Max. memory is 16.0GB. [2023-01-27 18:17:17,262 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 383.8MB. Free memory is still 335.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:17:17,262 INFO L158 Benchmark]: CACSL2BoogieTranslator took 252.67ms. Allocated memory is still 557.8MB. Free memory was 519.3MB in the beginning and 499.1MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 18:17:17,262 INFO L158 Benchmark]: Boogie Procedure Inliner took 25.94ms. Allocated memory is still 557.8MB. Free memory was 499.1MB in the beginning and 496.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:17:17,262 INFO L158 Benchmark]: Boogie Preprocessor took 16.61ms. Allocated memory is still 557.8MB. Free memory was 496.9MB in the beginning and 495.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:17:17,262 INFO L158 Benchmark]: RCFGBuilder took 321.46ms. Allocated memory is still 557.8MB. Free memory was 495.3MB in the beginning and 481.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 18:17:17,263 INFO L158 Benchmark]: TraceAbstraction took 4358.42ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 481.0MB in the beginning and 526.9MB in the end (delta: -45.8MB). Peak memory consumption was 70.6MB. Max. memory is 16.0GB. [2023-01-27 18:17:17,263 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 383.8MB. Free memory is still 335.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 252.67ms. Allocated memory is still 557.8MB. Free memory was 519.3MB in the beginning and 499.1MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 25.94ms. Allocated memory is still 557.8MB. Free memory was 499.1MB in the beginning and 496.9MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 16.61ms. Allocated memory is still 557.8MB. Free memory was 496.9MB in the beginning and 495.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 321.46ms. Allocated memory is still 557.8MB. Free memory was 495.3MB in the beginning and 481.8MB in the end (delta: 13.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 4358.42ms. Allocated memory was 557.8MB in the beginning and 671.1MB in the end (delta: 113.2MB). Free memory was 481.0MB in the beginning and 526.9MB in the end (delta: -45.8MB). Peak memory consumption was 70.6MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.5s, 78 PlacesBefore, 27 PlacesAfterwards, 69 TransitionsBefore, 17 TransitionsAfterwards, 1044 CoEnabledTransitionPairs, 5 FixpointIterations, 19 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 55 TotalNumberOfCompositions, 1941 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1163, independent: 1085, independent conditional: 0, independent unconditional: 1085, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 569, independent: 552, independent conditional: 0, independent unconditional: 552, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1163, independent: 533, independent conditional: 0, independent unconditional: 533, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 569, unknown conditional: 0, unknown unconditional: 569] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 38, Positive conditional cache size: 0, Positive unconditional cache size: 38, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 107 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: 4.2s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 170 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 170 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 18 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 460 IncrementalHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 25 mSDtfsCounter, 460 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358occurred in iteration=4, InterpolantAutomatonStates: 50, 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, 0.2s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 118 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 108 ConstructedInterpolants, 0 QuantifiedInterpolants, 490 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:17:17,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...