/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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:19:20,760 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:19:20,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:19:20,793 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 18:19:20,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 18:19:20,795 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 18:19:20,797 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 18:19:20,800 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 18:19:20,801 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 18:19:20,805 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 18:19:20,806 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 18:19:20,808 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 18:19:20,808 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:19:20,810 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:19:20,810 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:19:20,813 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:19:20,813 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:19:20,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:19:20,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:19:20,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:19:20,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:19:20,819 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:19:20,819 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:19:20,820 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:19:20,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:19:20,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:19:20,831 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:19:20,831 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:19:20,834 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 18:19:20,856 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:19:20,856 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:19:20,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:19:20,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:19:20,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:19:20,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:19:20,858 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:19:20,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:19:20,858 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:19:20,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:19:20,859 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:19:20,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:19:20,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:19:20,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:19:20,861 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:19:20,861 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:19:20,861 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:19:21,018 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:19:21,043 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:19:21,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:19:21,045 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:19:21,046 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:19:21,046 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-27 18:19:22,059 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:19:22,354 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:19:22,354 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-27 18:19:22,369 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492feb8c4/6b3db9047c624d4fb58cf42bf41e96df/FLAGa2c18e478 [2023-01-27 18:19:22,388 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/492feb8c4/6b3db9047c624d4fb58cf42bf41e96df [2023-01-27 18:19:22,389 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:19:22,391 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:19:22,393 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:19:22,393 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:19:22,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:19:22,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57a7a0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22, skipping insertion in model container [2023-01-27 18:19:22,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,401 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:19:22,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:19:22,578 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-27 18:19:22,709 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:19:22,717 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:19:22,727 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/safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i[975,988] [2023-01-27 18:19:22,758 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:19:22,782 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:19:22,783 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:19:22,788 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:19:22,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22 WrapperNode [2023-01-27 18:19:22,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:19:22,789 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:19:22,789 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:19:22,789 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:19:22,794 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,816 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,833 INFO L138 Inliner]: procedures = 176, calls = 51, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2023-01-27 18:19:22,833 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:19:22,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:19:22,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:19:22,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:19:22,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,848 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,859 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,860 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,861 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,862 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:19:22,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:19:22,863 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:19:22,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:19:22,863 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (1/1) ... [2023-01-27 18:19:22,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:19:22,890 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:19:22,900 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 18:19:22,910 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 18:19:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:19:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:19:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:19:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:19:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:19:22,948 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:19:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:19:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:19:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:19:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-01-27 18:19:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-01-27 18:19:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:19:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:19:22,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:19:22,949 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:19:22,950 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 18:19:23,033 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:19:23,035 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:19:23,173 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:19:23,177 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:19:23,177 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:19:23,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:19:23 BoogieIcfgContainer [2023-01-27 18:19:23,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:19:23,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:19:23,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:19:23,182 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:19:23,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:19:22" (1/3) ... [2023-01-27 18:19:23,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee9aa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:19:23, skipping insertion in model container [2023-01-27 18:19:23,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:19:22" (2/3) ... [2023-01-27 18:19:23,183 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ee9aa3f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:19:23, skipping insertion in model container [2023-01-27 18:19:23,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:19:23" (3/3) ... [2023-01-27 18:19:23,184 INFO L112 eAbstractionObserver]: Analyzing ICFG safe018_pso.oepc_pso.opt_tso.oepc_tso.opt.i [2023-01-27 18:19:23,195 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:19:23,195 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 18:19:23,195 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:19:23,244 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:19:23,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:19:23,299 INFO L130 PetriNetUnfolder]: 2/81 cut-off events. [2023-01-27 18:19:23,300 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:19:23,303 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 43 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 63. Up to 2 conditions per place. [2023-01-27 18:19:23,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 92 places, 84 transitions, 183 flow [2023-01-27 18:19:23,305 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 69 transitions, 147 flow [2023-01-27 18:19:23,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:19:23,313 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:19:23,315 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 69 transitions, 147 flow [2023-01-27 18:19:23,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 69 transitions, 147 flow [2023-01-27 18:19:23,329 INFO L130 PetriNetUnfolder]: 1/69 cut-off events. [2023-01-27 18:19:23,329 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:19:23,329 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 2. Compared 34 event pairs, 0 based on Foata normal form. 0/68 useless extension candidates. Maximal degree in co-relation 51. Up to 2 conditions per place. [2023-01-27 18:19:23,330 INFO L119 LiptonReduction]: Number of co-enabled transitions 974 [2023-01-27 18:19:24,807 INFO L134 LiptonReduction]: Checked pairs total: 1620 [2023-01-27 18:19:24,807 INFO L136 LiptonReduction]: Total number of compositions: 56 [2023-01-27 18:19:24,817 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:19:24,821 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;@20b16d54, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:19:24,821 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-01-27 18:19:24,825 INFO L130 PetriNetUnfolder]: 0/14 cut-off events. [2023-01-27 18:19:24,826 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:19:24,826 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:24,826 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:24,826 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 18:19:24,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:24,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1744931790, now seen corresponding path program 1 times [2023-01-27 18:19:24,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:24,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616102677] [2023-01-27 18:19:24,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:24,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:24,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:25,232 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 18:19:25,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:25,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616102677] [2023-01-27 18:19:25,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616102677] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:25,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:25,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:19:25,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510151649] [2023-01-27 18:19:25,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:25,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:19:25,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:25,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:19:25,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:19:25,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-27 18:19:25,261 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 16 transitions, 41 flow. Second operand has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 18:19:25,261 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:25,261 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-27 18:19:25,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:25,338 INFO L130 PetriNetUnfolder]: 222/384 cut-off events. [2023-01-27 18:19:25,339 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2023-01-27 18:19:25,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 783 conditions, 384 events. 222/384 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1491 event pairs, 69 based on Foata normal form. 3/387 useless extension candidates. Maximal degree in co-relation 772. Up to 340 conditions per place. [2023-01-27 18:19:25,342 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 21 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2023-01-27 18:19:25,342 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 113 flow [2023-01-27 18:19:25,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:19:25,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:19:25,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 238 transitions. [2023-01-27 18:19:25,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5666666666666667 [2023-01-27 18:19:25,352 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 238 transitions. [2023-01-27 18:19:25,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 238 transitions. [2023-01-27 18:19:25,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:25,355 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 238 transitions. [2023-01-27 18:19:25,356 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 79.33333333333333) internal successors, (238), 3 states have internal predecessors, (238), 0 states have call successors, (0), 0 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 18:19:25,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 18:19:25,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 18:19:25,361 INFO L175 Difference]: Start difference. First operand has 26 places, 16 transitions, 41 flow. Second operand 3 states and 238 transitions. [2023-01-27 18:19:25,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 113 flow [2023-01-27 18:19:25,363 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 25 transitions, 108 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 18:19:25,363 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 57 flow [2023-01-27 18:19:25,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-01-27 18:19:25,367 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-27 18:19:25,367 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 57 flow [2023-01-27 18:19:25,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 73.66666666666667) internal successors, (221), 3 states have internal predecessors, (221), 0 states have call successors, (0), 0 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 18:19:25,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:25,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:25,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:19:25,368 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 18:19:25,368 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:25,368 INFO L85 PathProgramCache]: Analyzing trace with hash 1741688772, now seen corresponding path program 1 times [2023-01-27 18:19:25,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:25,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889629722] [2023-01-27 18:19:25,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:25,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:25,599 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 18:19:25,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:25,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889629722] [2023-01-27 18:19:25,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889629722] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:25,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:25,603 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:19:25,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878300125] [2023-01-27 18:19:25,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:25,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:19:25,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:25,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:19:25,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:19:25,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-27 18:19:25,612 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 18 transitions, 57 flow. Second operand has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 18:19:25,612 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:25,612 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-27 18:19:25,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:25,675 INFO L130 PetriNetUnfolder]: 201/354 cut-off events. [2023-01-27 18:19:25,675 INFO L131 PetriNetUnfolder]: For 43/43 co-relation queries the response was YES. [2023-01-27 18:19:25,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 823 conditions, 354 events. 201/354 cut-off events. For 43/43 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1295 event pairs, 75 based on Foata normal form. 9/363 useless extension candidates. Maximal degree in co-relation 812. Up to 211 conditions per place. [2023-01-27 18:19:25,680 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 19 selfloop transitions, 3 changer transitions 0/23 dead transitions. [2023-01-27 18:19:25,680 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 23 transitions, 111 flow [2023-01-27 18:19:25,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:19:25,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:19:25,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 235 transitions. [2023-01-27 18:19:25,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2023-01-27 18:19:25,685 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 235 transitions. [2023-01-27 18:19:25,686 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 235 transitions. [2023-01-27 18:19:25,687 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:25,687 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 235 transitions. [2023-01-27 18:19:25,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 78.33333333333333) internal successors, (235), 3 states have internal predecessors, (235), 0 states have call successors, (0), 0 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 18:19:25,690 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 18:19:25,690 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 18:19:25,691 INFO L175 Difference]: Start difference. First operand has 26 places, 18 transitions, 57 flow. Second operand 3 states and 235 transitions. [2023-01-27 18:19:25,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 23 transitions, 111 flow [2023-01-27 18:19:25,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 23 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:19:25,692 INFO L231 Difference]: Finished difference. Result has 28 places, 18 transitions, 65 flow [2023-01-27 18:19:25,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=54, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=65, PETRI_PLACES=28, PETRI_TRANSITIONS=18} [2023-01-27 18:19:25,693 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 2 predicate places. [2023-01-27 18:19:25,693 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 18 transitions, 65 flow [2023-01-27 18:19:25,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 73.25) internal successors, (293), 4 states have internal predecessors, (293), 0 states have call successors, (0), 0 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 18:19:25,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:25,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:25,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:19:25,694 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 18:19:25,695 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:25,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1741688090, now seen corresponding path program 1 times [2023-01-27 18:19:25,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:25,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523155014] [2023-01-27 18:19:25,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:25,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:25,855 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 18:19:25,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:25,856 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523155014] [2023-01-27 18:19:25,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523155014] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:25,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:25,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:19:25,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543094141] [2023-01-27 18:19:25,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:25,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:19:25,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:25,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:19:25,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:19:25,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 140 [2023-01-27 18:19:25,859 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 18 transitions, 65 flow. Second operand has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 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 18:19:25,859 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:25,859 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 140 [2023-01-27 18:19:25,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:25,907 INFO L130 PetriNetUnfolder]: 130/253 cut-off events. [2023-01-27 18:19:25,908 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-27 18:19:25,910 INFO L83 FinitePrefix]: Finished finitePrefix Result has 611 conditions, 253 events. 130/253 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 990 event pairs, 44 based on Foata normal form. 6/259 useless extension candidates. Maximal degree in co-relation 598. Up to 175 conditions per place. [2023-01-27 18:19:25,911 INFO L137 encePairwiseOnDemand]: 137/140 looper letters, 21 selfloop transitions, 3 changer transitions 0/26 dead transitions. [2023-01-27 18:19:25,911 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 26 transitions, 133 flow [2023-01-27 18:19:25,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:19:25,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:19:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 249 transitions. [2023-01-27 18:19:25,912 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5928571428571429 [2023-01-27 18:19:25,912 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 249 transitions. [2023-01-27 18:19:25,912 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 249 transitions. [2023-01-27 18:19:25,912 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:25,912 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 249 transitions. [2023-01-27 18:19:25,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.0) internal successors, (249), 3 states have internal predecessors, (249), 0 states have call successors, (0), 0 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 18:19:25,914 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 18:19:25,914 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 140.0) internal successors, (560), 4 states have internal predecessors, (560), 0 states have call successors, (0), 0 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 18:19:25,914 INFO L175 Difference]: Start difference. First operand has 28 places, 18 transitions, 65 flow. Second operand 3 states and 249 transitions. [2023-01-27 18:19:25,914 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 26 transitions, 133 flow [2023-01-27 18:19:25,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 26 transitions, 127 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:19:25,916 INFO L231 Difference]: Finished difference. Result has 29 places, 18 transitions, 70 flow [2023-01-27 18:19:25,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=59, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=70, PETRI_PLACES=29, PETRI_TRANSITIONS=18} [2023-01-27 18:19:25,917 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2023-01-27 18:19:25,919 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 18 transitions, 70 flow [2023-01-27 18:19:25,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.0) internal successors, (234), 3 states have internal predecessors, (234), 0 states have call successors, (0), 0 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 18:19:25,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:25,920 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:25,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:19:25,920 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 18:19:25,920 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:25,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1842224184, now seen corresponding path program 1 times [2023-01-27 18:19:25,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:25,921 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699304332] [2023-01-27 18:19:25,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:25,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,036 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 18:19:26,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699304332] [2023-01-27 18:19:26,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699304332] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:19:26,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334664283] [2023-01-27 18:19:26,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,037 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:19:26,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:19:26,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:19:26,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-27 18:19:26,038 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 18 transitions, 70 flow. Second operand has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 18:19:26,038 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,038 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-27 18:19:26,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,097 INFO L130 PetriNetUnfolder]: 248/436 cut-off events. [2023-01-27 18:19:26,097 INFO L131 PetriNetUnfolder]: For 272/272 co-relation queries the response was YES. [2023-01-27 18:19:26,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1097 conditions, 436 events. 248/436 cut-off events. For 272/272 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 1881 event pairs, 39 based on Foata normal form. 18/451 useless extension candidates. Maximal degree in co-relation 1083. Up to 221 conditions per place. [2023-01-27 18:19:26,099 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 32 selfloop transitions, 11 changer transitions 2/46 dead transitions. [2023-01-27 18:19:26,099 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 46 transitions, 251 flow [2023-01-27 18:19:26,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:19:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:19:26,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-27 18:19:26,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-01-27 18:19:26,100 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-27 18:19:26,101 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-27 18:19:26,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-27 18:19:26,102 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 18:19:26,103 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 18:19:26,103 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 18:19:26,103 INFO L175 Difference]: Start difference. First operand has 29 places, 18 transitions, 70 flow. Second operand 5 states and 390 transitions. [2023-01-27 18:19:26,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 46 transitions, 251 flow [2023-01-27 18:19:26,104 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 239 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:19:26,104 INFO L231 Difference]: Finished difference. Result has 34 places, 26 transitions, 147 flow [2023-01-27 18:19:26,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=147, PETRI_PLACES=34, PETRI_TRANSITIONS=26} [2023-01-27 18:19:26,105 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-01-27 18:19:26,105 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 26 transitions, 147 flow [2023-01-27 18:19:26,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 71.5) internal successors, (286), 4 states have internal predecessors, (286), 0 states have call successors, (0), 0 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 18:19:26,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:26,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:19:26,106 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 18:19:26,106 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:26,106 INFO L85 PathProgramCache]: Analyzing trace with hash -1842244644, now seen corresponding path program 2 times [2023-01-27 18:19:26,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:26,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551574141] [2023-01-27 18:19:26,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:26,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:26,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,196 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 18:19:26,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551574141] [2023-01-27 18:19:26,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551574141] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:19:26,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006206494] [2023-01-27 18:19:26,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:19:26,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:19:26,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:19:26,198 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-27 18:19:26,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 26 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 18:19:26,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-27 18:19:26,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,252 INFO L130 PetriNetUnfolder]: 263/472 cut-off events. [2023-01-27 18:19:26,252 INFO L131 PetriNetUnfolder]: For 621/621 co-relation queries the response was YES. [2023-01-27 18:19:26,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1423 conditions, 472 events. 263/472 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2095 event pairs, 77 based on Foata normal form. 18/488 useless extension candidates. Maximal degree in co-relation 1406. Up to 232 conditions per place. [2023-01-27 18:19:26,254 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 23 selfloop transitions, 5 changer transitions 8/37 dead transitions. [2023-01-27 18:19:26,254 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 251 flow [2023-01-27 18:19:26,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:19:26,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:19:26,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 307 transitions. [2023-01-27 18:19:26,255 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5482142857142858 [2023-01-27 18:19:26,255 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 307 transitions. [2023-01-27 18:19:26,256 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 307 transitions. [2023-01-27 18:19:26,256 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,256 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 307 transitions. [2023-01-27 18:19:26,256 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.75) internal successors, (307), 4 states have internal predecessors, (307), 0 states have call successors, (0), 0 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 18:19:26,257 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 18:19:26,257 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 18:19:26,257 INFO L175 Difference]: Start difference. First operand has 34 places, 26 transitions, 147 flow. Second operand 4 states and 307 transitions. [2023-01-27 18:19:26,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 251 flow [2023-01-27 18:19:26,259 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 37 transitions, 249 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-27 18:19:26,259 INFO L231 Difference]: Finished difference. Result has 39 places, 20 transitions, 124 flow [2023-01-27 18:19:26,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=124, PETRI_PLACES=39, PETRI_TRANSITIONS=20} [2023-01-27 18:19:26,260 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 13 predicate places. [2023-01-27 18:19:26,260 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 20 transitions, 124 flow [2023-01-27 18:19:26,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 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 18:19:26,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:26,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:19:26,261 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 18:19:26,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:26,261 INFO L85 PathProgramCache]: Analyzing trace with hash 356602977, now seen corresponding path program 1 times [2023-01-27 18:19:26,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:26,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15358078] [2023-01-27 18:19:26,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:26,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,342 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 18:19:26,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15358078] [2023-01-27 18:19:26,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15358078] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:19:26,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698936931] [2023-01-27 18:19:26,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:19:26,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:19:26,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:19:26,344 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-27 18:19:26,345 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 20 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 18:19:26,345 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,345 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-27 18:19:26,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,386 INFO L130 PetriNetUnfolder]: 195/336 cut-off events. [2023-01-27 18:19:26,386 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2023-01-27 18:19:26,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1121 conditions, 336 events. 195/336 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1075 event pairs, 87 based on Foata normal form. 18/354 useless extension candidates. Maximal degree in co-relation 1100. Up to 164 conditions per place. [2023-01-27 18:19:26,387 INFO L137 encePairwiseOnDemand]: 136/140 looper letters, 18 selfloop transitions, 3 changer transitions 9/30 dead transitions. [2023-01-27 18:19:26,387 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 30 transitions, 217 flow [2023-01-27 18:19:26,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 18:19:26,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 18:19:26,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 304 transitions. [2023-01-27 18:19:26,388 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5428571428571428 [2023-01-27 18:19:26,388 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 304 transitions. [2023-01-27 18:19:26,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 304 transitions. [2023-01-27 18:19:26,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,389 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 304 transitions. [2023-01-27 18:19:26,389 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 76.0) internal successors, (304), 4 states have internal predecessors, (304), 0 states have call successors, (0), 0 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 18:19:26,390 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 18:19:26,390 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 140.0) internal successors, (700), 5 states have internal predecessors, (700), 0 states have call successors, (0), 0 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 18:19:26,390 INFO L175 Difference]: Start difference. First operand has 39 places, 20 transitions, 124 flow. Second operand 4 states and 304 transitions. [2023-01-27 18:19:26,390 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 30 transitions, 217 flow [2023-01-27 18:19:26,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 30 transitions, 192 flow, removed 3 selfloop flow, removed 6 redundant places. [2023-01-27 18:19:26,392 INFO L231 Difference]: Finished difference. Result has 38 places, 16 transitions, 88 flow [2023-01-27 18:19:26,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=99, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=88, PETRI_PLACES=38, PETRI_TRANSITIONS=16} [2023-01-27 18:19:26,393 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-27 18:19:26,393 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 16 transitions, 88 flow [2023-01-27 18:19:26,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.2) internal successors, (356), 5 states have internal predecessors, (356), 0 states have call successors, (0), 0 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 18:19:26,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:26,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:19:26,393 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 18:19:26,394 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:26,394 INFO L85 PathProgramCache]: Analyzing trace with hash -439876128, now seen corresponding path program 1 times [2023-01-27 18:19:26,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:26,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856788979] [2023-01-27 18:19:26,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:26,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:26,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,507 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 18:19:26,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856788979] [2023-01-27 18:19:26,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [856788979] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:19:26,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353323482] [2023-01-27 18:19:26,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:19:26,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:19:26,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:19:26,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-27 18:19:26,511 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 16 transitions, 88 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 18:19:26,511 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,511 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-27 18:19:26,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,570 INFO L130 PetriNetUnfolder]: 56/125 cut-off events. [2023-01-27 18:19:26,570 INFO L131 PetriNetUnfolder]: For 595/597 co-relation queries the response was YES. [2023-01-27 18:19:26,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442 conditions, 125 events. 56/125 cut-off events. For 595/597 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 384 event pairs, 23 based on Foata normal form. 10/134 useless extension candidates. Maximal degree in co-relation 423. Up to 73 conditions per place. [2023-01-27 18:19:26,572 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 17 selfloop transitions, 4 changer transitions 12/35 dead transitions. [2023-01-27 18:19:26,572 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 35 transitions, 241 flow [2023-01-27 18:19:26,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:19:26,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:19:26,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2023-01-27 18:19:26,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5571428571428572 [2023-01-27 18:19:26,573 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 390 transitions. [2023-01-27 18:19:26,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 390 transitions. [2023-01-27 18:19:26,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 390 transitions. [2023-01-27 18:19:26,574 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 18:19:26,575 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 18:19:26,575 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 18:19:26,575 INFO L175 Difference]: Start difference. First operand has 38 places, 16 transitions, 88 flow. Second operand 5 states and 390 transitions. [2023-01-27 18:19:26,575 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 35 transitions, 241 flow [2023-01-27 18:19:26,576 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 174 flow, removed 12 selfloop flow, removed 10 redundant places. [2023-01-27 18:19:26,577 INFO L231 Difference]: Finished difference. Result has 34 places, 19 transitions, 92 flow [2023-01-27 18:19:26,577 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=16, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=92, PETRI_PLACES=34, PETRI_TRANSITIONS=19} [2023-01-27 18:19:26,578 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 8 predicate places. [2023-01-27 18:19:26,578 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 19 transitions, 92 flow [2023-01-27 18:19:26,578 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 18:19:26,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:26,578 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:19:26,580 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 18:19:26,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:26,580 INFO L85 PathProgramCache]: Analyzing trace with hash 1952189162, now seen corresponding path program 1 times [2023-01-27 18:19:26,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:26,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015324004] [2023-01-27 18:19:26,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:26,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:26,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,661 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 18:19:26,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015324004] [2023-01-27 18:19:26,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015324004] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,661 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:19:26,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165817468] [2023-01-27 18:19:26,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:19:26,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:19:26,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:19:26,663 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-27 18:19:26,663 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 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 18:19:26,663 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,663 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-27 18:19:26,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,699 INFO L130 PetriNetUnfolder]: 32/81 cut-off events. [2023-01-27 18:19:26,700 INFO L131 PetriNetUnfolder]: For 229/252 co-relation queries the response was YES. [2023-01-27 18:19:26,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 81 events. 32/81 cut-off events. For 229/252 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 214 event pairs, 5 based on Foata normal form. 14/94 useless extension candidates. Maximal degree in co-relation 295. Up to 48 conditions per place. [2023-01-27 18:19:26,700 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 18 selfloop transitions, 7 changer transitions 10/37 dead transitions. [2023-01-27 18:19:26,700 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 37 transitions, 246 flow [2023-01-27 18:19:26,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:19:26,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:19:26,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2023-01-27 18:19:26,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5511904761904762 [2023-01-27 18:19:26,701 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 463 transitions. [2023-01-27 18:19:26,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 463 transitions. [2023-01-27 18:19:26,702 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 463 transitions. [2023-01-27 18:19:26,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.16666666666667) internal successors, (463), 6 states have internal predecessors, (463), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:19:26,703 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 18:19:26,703 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 140.0) internal successors, (980), 7 states have internal predecessors, (980), 0 states have call successors, (0), 0 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 18:19:26,704 INFO L175 Difference]: Start difference. First operand has 34 places, 19 transitions, 92 flow. Second operand 6 states and 463 transitions. [2023-01-27 18:19:26,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 37 transitions, 246 flow [2023-01-27 18:19:26,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 37 transitions, 240 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-01-27 18:19:26,705 INFO L231 Difference]: Finished difference. Result has 38 places, 22 transitions, 142 flow [2023-01-27 18:19:26,705 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=142, PETRI_PLACES=38, PETRI_TRANSITIONS=22} [2023-01-27 18:19:26,705 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-27 18:19:26,705 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 22 transitions, 142 flow [2023-01-27 18:19:26,705 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 18:19:26,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:26,706 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:19:26,706 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 18:19:26,706 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:26,706 INFO L85 PathProgramCache]: Analyzing trace with hash 387879697, now seen corresponding path program 1 times [2023-01-27 18:19:26,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:26,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358801990] [2023-01-27 18:19:26,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:26,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:26,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,790 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 18:19:26,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358801990] [2023-01-27 18:19:26,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358801990] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:19:26,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279091115] [2023-01-27 18:19:26,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 18:19:26,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 18:19:26,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-01-27 18:19:26,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 140 [2023-01-27 18:19:26,793 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 22 transitions, 142 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 18:19:26,793 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,793 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 140 [2023-01-27 18:19:26,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,831 INFO L130 PetriNetUnfolder]: 17/50 cut-off events. [2023-01-27 18:19:26,831 INFO L131 PetriNetUnfolder]: For 173/191 co-relation queries the response was YES. [2023-01-27 18:19:26,831 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224 conditions, 50 events. 17/50 cut-off events. For 173/191 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 2 based on Foata normal form. 12/61 useless extension candidates. Maximal degree in co-relation 206. Up to 28 conditions per place. [2023-01-27 18:19:26,831 INFO L137 encePairwiseOnDemand]: 134/140 looper letters, 15 selfloop transitions, 10 changer transitions 5/32 dead transitions. [2023-01-27 18:19:26,831 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 32 transitions, 257 flow [2023-01-27 18:19:26,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:19:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:19:26,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 529 transitions. [2023-01-27 18:19:26,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539795918367347 [2023-01-27 18:19:26,833 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 529 transitions. [2023-01-27 18:19:26,833 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 529 transitions. [2023-01-27 18:19:26,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,833 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 529 transitions. [2023-01-27 18:19:26,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.57142857142857) internal successors, (529), 7 states have internal predecessors, (529), 0 states have call successors, (0), 0 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 18:19:26,835 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 18:19:26,835 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 140.0) internal successors, (1120), 8 states have internal predecessors, (1120), 0 states have call successors, (0), 0 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 18:19:26,835 INFO L175 Difference]: Start difference. First operand has 38 places, 22 transitions, 142 flow. Second operand 7 states and 529 transitions. [2023-01-27 18:19:26,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 32 transitions, 257 flow [2023-01-27 18:19:26,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 32 transitions, 217 flow, removed 16 selfloop flow, removed 4 redundant places. [2023-01-27 18:19:26,836 INFO L231 Difference]: Finished difference. Result has 41 places, 22 transitions, 140 flow [2023-01-27 18:19:26,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=140, PETRI_PLACES=41, PETRI_TRANSITIONS=22} [2023-01-27 18:19:26,837 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 15 predicate places. [2023-01-27 18:19:26,837 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 22 transitions, 140 flow [2023-01-27 18:19:26,837 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 18:19:26,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:19:26,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:19:26,837 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 18:19:26,838 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:19:26,838 INFO L85 PathProgramCache]: Analyzing trace with hash 807289790, now seen corresponding path program 1 times [2023-01-27 18:19:26,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:19:26,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626216178] [2023-01-27 18:19:26,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:19:26,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:19:26,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:19:26,915 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 18:19:26,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:19:26,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626216178] [2023-01-27 18:19:26,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626216178] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:19:26,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:19:26,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:19:26,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347103035] [2023-01-27 18:19:26,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:19:26,916 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:19:26,917 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:19:26,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:19:26,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:19:26,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 140 [2023-01-27 18:19:26,918 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 22 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 18:19:26,918 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:19:26,918 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 140 [2023-01-27 18:19:26,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:19:26,941 INFO L130 PetriNetUnfolder]: 18/49 cut-off events. [2023-01-27 18:19:26,942 INFO L131 PetriNetUnfolder]: For 117/117 co-relation queries the response was YES. [2023-01-27 18:19:26,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 49 events. 18/49 cut-off events. For 117/117 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 73 event pairs, 3 based on Foata normal form. 1/50 useless extension candidates. Maximal degree in co-relation 189. Up to 27 conditions per place. [2023-01-27 18:19:26,942 INFO L137 encePairwiseOnDemand]: 135/140 looper letters, 0 selfloop transitions, 0 changer transitions 27/27 dead transitions. [2023-01-27 18:19:26,942 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 27 transitions, 214 flow [2023-01-27 18:19:26,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:19:26,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:19:26,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 364 transitions. [2023-01-27 18:19:26,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.52 [2023-01-27 18:19:26,943 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 364 transitions. [2023-01-27 18:19:26,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 364 transitions. [2023-01-27 18:19:26,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:19:26,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 364 transitions. [2023-01-27 18:19:26,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 72.8) internal successors, (364), 5 states have internal predecessors, (364), 0 states have call successors, (0), 0 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 18:19:26,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 18:19:26,945 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 140.0) internal successors, (840), 6 states have internal predecessors, (840), 0 states have call successors, (0), 0 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 18:19:26,945 INFO L175 Difference]: Start difference. First operand has 41 places, 22 transitions, 140 flow. Second operand 5 states and 364 transitions. [2023-01-27 18:19:26,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 27 transitions, 214 flow [2023-01-27 18:19:26,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 27 transitions, 170 flow, removed 9 selfloop flow, removed 7 redundant places. [2023-01-27 18:19:26,946 INFO L231 Difference]: Finished difference. Result has 35 places, 0 transitions, 0 flow [2023-01-27 18:19:26,946 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=140, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=35, PETRI_TRANSITIONS=0} [2023-01-27 18:19:26,947 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 9 predicate places. [2023-01-27 18:19:26,947 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 0 transitions, 0 flow [2023-01-27 18:19:26,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 72.75) internal successors, (291), 4 states have internal predecessors, (291), 0 states have call successors, (0), 0 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 18:19:26,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-01-27 18:19:26,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-01-27 18:19:26,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-01-27 18:19:26,949 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-01-27 18:19:26,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:19:26,949 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:19:26,951 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:19:26,951 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:19:26,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:19:26 BasicIcfg [2023-01-27 18:19:26,953 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:19:26,953 INFO L158 Benchmark]: Toolchain (without parser) took 4562.72ms. Allocated memory is still 669.0MB. Free memory was 626.0MB in the beginning and 474.5MB in the end (delta: 151.5MB). Peak memory consumption was 154.6MB. Max. memory is 16.0GB. [2023-01-27 18:19:26,953 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 402.7MB. Free memory is still 349.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:19:26,954 INFO L158 Benchmark]: CACSL2BoogieTranslator took 395.41ms. Allocated memory is still 669.0MB. Free memory was 626.0MB in the beginning and 605.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 18:19:26,954 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.46ms. Allocated memory is still 669.0MB. Free memory was 605.7MB in the beginning and 603.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:19:26,954 INFO L158 Benchmark]: Boogie Preprocessor took 28.27ms. Allocated memory is still 669.0MB. Free memory was 603.7MB in the beginning and 602.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:19:26,954 INFO L158 Benchmark]: RCFGBuilder took 316.45ms. Allocated memory is still 669.0MB. Free memory was 602.2MB in the beginning and 588.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-27 18:19:26,954 INFO L158 Benchmark]: TraceAbstraction took 3772.68ms. Allocated memory is still 669.0MB. Free memory was 587.6MB in the beginning and 474.5MB in the end (delta: 113.0MB). Peak memory consumption was 114.8MB. Max. memory is 16.0GB. [2023-01-27 18:19:26,955 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 402.7MB. Free memory is still 349.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 395.41ms. Allocated memory is still 669.0MB. Free memory was 626.0MB in the beginning and 605.7MB in the end (delta: 20.2MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 44.46ms. Allocated memory is still 669.0MB. Free memory was 605.7MB in the beginning and 603.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.27ms. Allocated memory is still 669.0MB. Free memory was 603.7MB in the beginning and 602.2MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 316.45ms. Allocated memory is still 669.0MB. Free memory was 602.2MB in the beginning and 588.3MB in the end (delta: 13.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 3772.68ms. Allocated memory is still 669.0MB. Free memory was 587.6MB in the beginning and 474.5MB in the end (delta: 113.0MB). Peak memory consumption was 114.8MB. 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, 26 PlacesAfterwards, 69 TransitionsBefore, 16 TransitionsAfterwards, 974 CoEnabledTransitionPairs, 5 FixpointIterations, 20 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 3 ConcurrentYvCompositions, 1 ChoiceCompositions, 56 TotalNumberOfCompositions, 1620 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 924, independent: 858, independent conditional: 0, independent unconditional: 858, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 534, independent: 512, independent conditional: 0, independent unconditional: 512, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 924, independent: 346, independent conditional: 0, independent unconditional: 346, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 534, unknown conditional: 0, unknown unconditional: 534] , Statistics on independence cache: Total cache size (in pairs): 37, Positive cache size: 30, Positive conditional cache size: 0, Positive unconditional cache size: 30, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, 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, 106 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: 3.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 130 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 130 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 391 IncrementalHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 4 mSDtfsCounter, 391 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=147occurred in iteration=4, InterpolantAutomatonStates: 45, 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, 1.1s InterpolantComputationTime, 112 NumberOfCodeBlocks, 112 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 102 ConstructedInterpolants, 0 QuantifiedInterpolants, 438 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 18:19:26,968 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...