/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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 18:15:16,562 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 18:15:16,564 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 18:15:16,594 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-01-27 18:15:16,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 18:15:16,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 18:15:16,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 18:15:16,615 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 18:15:16,616 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 18:15:16,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 18:15:16,618 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 18:15:16,622 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 18:15:16,623 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 18:15:16,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 18:15:16,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 18:15:16,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 18:15:16,634 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 18:15:16,641 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 18:15:16,642 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 18:15:16,643 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 18:15:16,644 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 18:15:16,668 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 18:15:16,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 18:15:16,669 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 18:15:16,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 18:15:16,670 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 18:15:16,670 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 18:15:16,670 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 18:15:16,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 18:15:16,670 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 18:15:16,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 18:15:16,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 18:15:16,671 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 18:15:16,672 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 18:15:16,672 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 18:15:16,672 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 18:15:16,672 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 18:15:16,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:15:16,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 18:15:16,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 18:15:16,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 18:15:16,673 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 18:15:16,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 18:15:16,673 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 18:15:16,673 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 18:15:16,673 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 18:15:16,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 18:15:16,879 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 18:15:16,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 18:15:16,882 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 18:15:16,883 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 18:15:16,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-01-27 18:15:18,025 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 18:15:18,257 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 18:15:18,258 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-01-27 18:15:18,271 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6bff152/95f18e56daeb43ea9807943423bcb7f7/FLAG00ff22d9d [2023-01-27 18:15:18,282 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0f6bff152/95f18e56daeb43ea9807943423bcb7f7 [2023-01-27 18:15:18,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 18:15:18,285 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 18:15:18,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 18:15:18,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 18:15:18,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 18:15:18,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12cea30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18, skipping insertion in model container [2023-01-27 18:15:18,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 18:15:18,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 18:15:18,473 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-01-27 18:15:18,654 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:15:18,665 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 18:15:18,674 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/rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i[1038,1051] [2023-01-27 18:15:18,754 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 18:15:18,794 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:15:18,795 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-27 18:15:18,802 INFO L208 MainTranslator]: Completed translation [2023-01-27 18:15:18,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18 WrapperNode [2023-01-27 18:15:18,802 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 18:15:18,803 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 18:15:18,803 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 18:15:18,804 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 18:15:18,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,833 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,858 INFO L138 Inliner]: procedures = 175, calls = 47, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-01-27 18:15:18,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 18:15:18,859 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 18:15:18,859 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 18:15:18,860 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 18:15:18,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,879 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,879 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,901 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,910 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,912 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,915 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 18:15:18,919 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 18:15:18,919 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 18:15:18,919 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 18:15:18,920 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (1/1) ... [2023-01-27 18:15:18,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 18:15:18,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 18:15:18,952 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 18:15:18,964 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 18:15:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 18:15:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-27 18:15:18,992 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 18:15:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 18:15:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 18:15:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-01-27 18:15:18,993 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-01-27 18:15:18,993 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-01-27 18:15:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-01-27 18:15:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 18:15:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-27 18:15:18,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 18:15:18,994 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 18:15:18,995 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 18:15:19,144 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 18:15:19,146 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 18:15:19,516 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 18:15:19,689 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 18:15:19,690 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 18:15:19,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:15:19 BoogieIcfgContainer [2023-01-27 18:15:19,692 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 18:15:19,695 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 18:15:19,695 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 18:15:19,698 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 18:15:19,698 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 06:15:18" (1/3) ... [2023-01-27 18:15:19,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed8adc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:15:19, skipping insertion in model container [2023-01-27 18:15:19,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 06:15:18" (2/3) ... [2023-01-27 18:15:19,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1ed8adc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 06:15:19, skipping insertion in model container [2023-01-27 18:15:19,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 06:15:19" (3/3) ... [2023-01-27 18:15:19,700 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_power.oepc_power.opt_pso.oepc_pso.opt_rmo.oepc_rmo.opt.i [2023-01-27 18:15:19,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 18:15:19,715 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 18:15:19,715 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 18:15:19,768 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-27 18:15:19,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 97 places, 92 transitions, 194 flow [2023-01-27 18:15:19,852 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-01-27 18:15:19,852 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:19,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-01-27 18:15:19,857 INFO L82 GeneralOperation]: Start removeDead. Operand has 97 places, 92 transitions, 194 flow [2023-01-27 18:15:19,868 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 90 transitions, 186 flow [2023-01-27 18:15:19,871 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 18:15:19,890 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 90 transitions, 186 flow [2023-01-27 18:15:19,896 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 90 transitions, 186 flow [2023-01-27 18:15:19,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 90 transitions, 186 flow [2023-01-27 18:15:19,926 INFO L130 PetriNetUnfolder]: 2/90 cut-off events. [2023-01-27 18:15:19,926 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:19,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 97 conditions, 90 events. 2/90 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 49 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 54. Up to 2 conditions per place. [2023-01-27 18:15:19,928 INFO L119 LiptonReduction]: Number of co-enabled transitions 1244 [2023-01-27 18:15:23,776 INFO L134 LiptonReduction]: Checked pairs total: 3453 [2023-01-27 18:15:23,777 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-27 18:15:23,795 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 18:15:23,799 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;@3da52326, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 18:15:23,799 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-27 18:15:23,802 INFO L130 PetriNetUnfolder]: 0/7 cut-off events. [2023-01-27 18:15:23,802 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 18:15:23,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:23,802 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-01-27 18:15:23,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:23,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:23,807 INFO L85 PathProgramCache]: Analyzing trace with hash 469001348, now seen corresponding path program 1 times [2023-01-27 18:15:23,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:23,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892635394] [2023-01-27 18:15:23,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:23,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:23,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:24,180 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 18:15:24,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:24,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892635394] [2023-01-27 18:15:24,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892635394] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:24,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:24,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 18:15:24,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734497640] [2023-01-27 18:15:24,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:24,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 18:15:24,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 18:15:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 18:15:24,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-27 18:15:24,232 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 19 transitions, 44 flow. Second operand has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 18:15:24,232 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:24,232 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-27 18:15:24,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:24,398 INFO L130 PetriNetUnfolder]: 275/468 cut-off events. [2023-01-27 18:15:24,398 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-27 18:15:24,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 954 conditions, 468 events. 275/468 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1808 event pairs, 30 based on Foata normal form. 0/432 useless extension candidates. Maximal degree in co-relation 944. Up to 396 conditions per place. [2023-01-27 18:15:24,402 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 23 selfloop transitions, 2 changer transitions 2/27 dead transitions. [2023-01-27 18:15:24,403 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 114 flow [2023-01-27 18:15:24,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:24,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:24,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 259 transitions. [2023-01-27 18:15:24,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49903660886319845 [2023-01-27 18:15:24,415 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 259 transitions. [2023-01-27 18:15:24,415 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 259 transitions. [2023-01-27 18:15:24,416 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:24,418 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 259 transitions. [2023-01-27 18:15:24,421 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 86.33333333333333) internal successors, (259), 3 states have internal predecessors, (259), 0 states have call successors, (0), 0 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 18:15:24,425 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 18:15:24,426 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 18:15:24,427 INFO L175 Difference]: Start difference. First operand has 26 places, 19 transitions, 44 flow. Second operand 3 states and 259 transitions. [2023-01-27 18:15:24,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 114 flow [2023-01-27 18:15:24,430 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 27 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:24,431 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 42 flow [2023-01-27 18:15:24,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-01-27 18:15:24,436 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-27 18:15:24,436 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 42 flow [2023-01-27 18:15:24,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 78.66666666666667) internal successors, (236), 3 states have internal predecessors, (236), 0 states have call successors, (0), 0 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 18:15:24,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:24,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:24,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 18:15:24,438 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:24,442 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:24,442 INFO L85 PathProgramCache]: Analyzing trace with hash -261224281, now seen corresponding path program 1 times [2023-01-27 18:15:24,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:24,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379330541] [2023-01-27 18:15:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:24,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:25,107 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 18:15:25,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:25,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379330541] [2023-01-27 18:15:25,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379330541] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:25,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:25,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:15:25,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587900366] [2023-01-27 18:15:25,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:25,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:15:25,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:25,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:15:25,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:15:25,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-27 18:15:25,114 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 42 flow. Second operand has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 18:15:25,114 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:25,115 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-27 18:15:25,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:25,253 INFO L130 PetriNetUnfolder]: 182/321 cut-off events. [2023-01-27 18:15:25,253 INFO L131 PetriNetUnfolder]: For 19/19 co-relation queries the response was YES. [2023-01-27 18:15:25,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 321 events. 182/321 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1109 event pairs, 80 based on Foata normal form. 18/339 useless extension candidates. Maximal degree in co-relation 671. Up to 193 conditions per place. [2023-01-27 18:15:25,257 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 24 selfloop transitions, 2 changer transitions 0/26 dead transitions. [2023-01-27 18:15:25,257 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 26 transitions, 116 flow [2023-01-27 18:15:25,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:25,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 225 transitions. [2023-01-27 18:15:25,262 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43352601156069365 [2023-01-27 18:15:25,262 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 225 transitions. [2023-01-27 18:15:25,262 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 225 transitions. [2023-01-27 18:15:25,262 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:25,262 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 225 transitions. [2023-01-27 18:15:25,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 75.0) internal successors, (225), 3 states have internal predecessors, (225), 0 states have call successors, (0), 0 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 18:15:25,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 18:15:25,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 18:15:25,267 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 42 flow. Second operand 3 states and 225 transitions. [2023-01-27 18:15:25,268 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 26 transitions, 116 flow [2023-01-27 18:15:25,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 24 places, 26 transitions, 110 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:25,269 INFO L231 Difference]: Finished difference. Result has 25 places, 17 transitions, 46 flow [2023-01-27 18:15:25,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=46, PETRI_PLACES=25, PETRI_TRANSITIONS=17} [2023-01-27 18:15:25,270 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, -1 predicate places. [2023-01-27 18:15:25,270 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 17 transitions, 46 flow [2023-01-27 18:15:25,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 67.75) internal successors, (271), 4 states have internal predecessors, (271), 0 states have call successors, (0), 0 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 18:15:25,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:25,271 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:25,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 18:15:25,271 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:25,272 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:25,272 INFO L85 PathProgramCache]: Analyzing trace with hash 1688167736, now seen corresponding path program 1 times [2023-01-27 18:15:25,273 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:25,273 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434013503] [2023-01-27 18:15:25,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:25,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:25,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:25,993 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 18:15:25,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:25,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434013503] [2023-01-27 18:15:25,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434013503] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:25,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:25,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 18:15:25,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989488095] [2023-01-27 18:15:25,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:25,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 18:15:25,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:25,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 18:15:25,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 18:15:25,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-27 18:15:25,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 17 transitions, 46 flow. Second operand has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 18:15:25,996 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:25,996 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-27 18:15:25,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:26,090 INFO L130 PetriNetUnfolder]: 172/305 cut-off events. [2023-01-27 18:15:26,090 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-27 18:15:26,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 681 conditions, 305 events. 172/305 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1009 event pairs, 56 based on Foata normal form. 6/311 useless extension candidates. Maximal degree in co-relation 670. Up to 210 conditions per place. [2023-01-27 18:15:26,094 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 22 selfloop transitions, 2 changer transitions 0/24 dead transitions. [2023-01-27 18:15:26,094 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 24 transitions, 111 flow [2023-01-27 18:15:26,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 18:15:26,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 18:15:26,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 223 transitions. [2023-01-27 18:15:26,097 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4296724470134875 [2023-01-27 18:15:26,097 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 223 transitions. [2023-01-27 18:15:26,097 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 223 transitions. [2023-01-27 18:15:26,097 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:26,098 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 223 transitions. [2023-01-27 18:15:26,098 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 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 18:15:26,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 18:15:26,100 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 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 18:15:26,100 INFO L175 Difference]: Start difference. First operand has 25 places, 17 transitions, 46 flow. Second operand 3 states and 223 transitions. [2023-01-27 18:15:26,101 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 24 transitions, 111 flow [2023-01-27 18:15:26,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 24 transitions, 105 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:26,102 INFO L231 Difference]: Finished difference. Result has 26 places, 17 transitions, 50 flow [2023-01-27 18:15:26,102 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=42, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=26, PETRI_TRANSITIONS=17} [2023-01-27 18:15:26,103 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 0 predicate places. [2023-01-27 18:15:26,106 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 17 transitions, 50 flow [2023-01-27 18:15:26,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.5) internal successors, (274), 4 states have internal predecessors, (274), 0 states have call successors, (0), 0 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 18:15:26,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:26,107 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:26,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 18:15:26,107 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:26,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:26,107 INFO L85 PathProgramCache]: Analyzing trace with hash -2112271550, now seen corresponding path program 1 times [2023-01-27 18:15:26,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:26,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059645589] [2023-01-27 18:15:26,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:26,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:26,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:27,473 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 18:15:27,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:27,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059645589] [2023-01-27 18:15:27,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059645589] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:27,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:27,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-01-27 18:15:27,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692276107] [2023-01-27 18:15:27,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:27,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-27 18:15:27,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:27,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-27 18:15:27,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-01-27 18:15:27,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 173 [2023-01-27 18:15:27,477 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 17 transitions, 50 flow. Second operand has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 18:15:27,478 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:27,478 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 173 [2023-01-27 18:15:27,478 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:27,757 INFO L130 PetriNetUnfolder]: 211/371 cut-off events. [2023-01-27 18:15:27,757 INFO L131 PetriNetUnfolder]: For 52/52 co-relation queries the response was YES. [2023-01-27 18:15:27,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 872 conditions, 371 events. 211/371 cut-off events. For 52/52 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1339 event pairs, 21 based on Foata normal form. 6/377 useless extension candidates. Maximal degree in co-relation 860. Up to 172 conditions per place. [2023-01-27 18:15:27,759 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 38 selfloop transitions, 6 changer transitions 0/44 dead transitions. [2023-01-27 18:15:27,759 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 44 transitions, 200 flow [2023-01-27 18:15:27,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:15:27,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:15:27,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 466 transitions. [2023-01-27 18:15:27,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4489402697495183 [2023-01-27 18:15:27,762 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 466 transitions. [2023-01-27 18:15:27,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 466 transitions. [2023-01-27 18:15:27,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:27,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 466 transitions. [2023-01-27 18:15:27,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 0 states have call successors, (0), 0 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 18:15:27,769 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:27,770 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:27,770 INFO L175 Difference]: Start difference. First operand has 26 places, 17 transitions, 50 flow. Second operand 6 states and 466 transitions. [2023-01-27 18:15:27,770 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 44 transitions, 200 flow [2023-01-27 18:15:27,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 44 transitions, 194 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:27,772 INFO L231 Difference]: Finished difference. Result has 32 places, 20 transitions, 77 flow [2023-01-27 18:15:27,772 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=17, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=20} [2023-01-27 18:15:27,773 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 6 predicate places. [2023-01-27 18:15:27,773 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 20 transitions, 77 flow [2023-01-27 18:15:27,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.5) internal successors, (572), 8 states have internal predecessors, (572), 0 states have call successors, (0), 0 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 18:15:27,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:27,775 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:27,775 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 18:15:27,776 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:27,776 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:27,776 INFO L85 PathProgramCache]: Analyzing trace with hash -299346199, now seen corresponding path program 1 times [2023-01-27 18:15:27,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:27,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928222798] [2023-01-27 18:15:27,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:27,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:27,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:28,517 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 18:15:28,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:28,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928222798] [2023-01-27 18:15:28,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1928222798] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:28,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:28,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:15:28,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351345239] [2023-01-27 18:15:28,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:28,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:15:28,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:28,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:15:28,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:15:28,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-01-27 18:15:28,520 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 20 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 18:15:28,520 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:28,520 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-01-27 18:15:28,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:28,798 INFO L130 PetriNetUnfolder]: 270/474 cut-off events. [2023-01-27 18:15:28,798 INFO L131 PetriNetUnfolder]: For 195/195 co-relation queries the response was YES. [2023-01-27 18:15:28,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1235 conditions, 474 events. 270/474 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1841 event pairs, 21 based on Foata normal form. 3/477 useless extension candidates. Maximal degree in co-relation 1220. Up to 326 conditions per place. [2023-01-27 18:15:28,801 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 34 selfloop transitions, 18 changer transitions 0/52 dead transitions. [2023-01-27 18:15:28,801 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 271 flow [2023-01-27 18:15:28,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:15:28,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:15:28,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 439 transitions. [2023-01-27 18:15:28,803 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4229287090558767 [2023-01-27 18:15:28,804 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 439 transitions. [2023-01-27 18:15:28,804 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 439 transitions. [2023-01-27 18:15:28,804 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:28,804 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 439 transitions. [2023-01-27 18:15:28,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 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 18:15:28,807 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:28,807 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:28,807 INFO L175 Difference]: Start difference. First operand has 32 places, 20 transitions, 77 flow. Second operand 6 states and 439 transitions. [2023-01-27 18:15:28,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 271 flow [2023-01-27 18:15:28,809 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 52 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 18:15:28,810 INFO L231 Difference]: Finished difference. Result has 38 places, 37 transitions, 198 flow [2023-01-27 18:15:28,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=198, PETRI_PLACES=38, PETRI_TRANSITIONS=37} [2023-01-27 18:15:28,812 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 12 predicate places. [2023-01-27 18:15:28,813 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 37 transitions, 198 flow [2023-01-27 18:15:28,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 67.6) internal successors, (338), 5 states have internal predecessors, (338), 0 states have call successors, (0), 0 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 18:15:28,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:28,813 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:28,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 18:15:28,813 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:28,814 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:28,814 INFO L85 PathProgramCache]: Analyzing trace with hash 483559013, now seen corresponding path program 2 times [2023-01-27 18:15:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344233286] [2023-01-27 18:15:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:28,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:29,244 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 18:15:29,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:29,244 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344233286] [2023-01-27 18:15:29,244 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344233286] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:29,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:29,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-27 18:15:29,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1844383138] [2023-01-27 18:15:29,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:29,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:15:29,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:29,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:15:29,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:15:29,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 173 [2023-01-27 18:15:29,252 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 37 transitions, 198 flow. Second operand has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 18:15:29,252 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:29,252 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 173 [2023-01-27 18:15:29,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:29,480 INFO L130 PetriNetUnfolder]: 355/633 cut-off events. [2023-01-27 18:15:29,480 INFO L131 PetriNetUnfolder]: For 677/677 co-relation queries the response was YES. [2023-01-27 18:15:29,482 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2094 conditions, 633 events. 355/633 cut-off events. For 677/677 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2777 event pairs, 61 based on Foata normal form. 12/645 useless extension candidates. Maximal degree in co-relation 2076. Up to 267 conditions per place. [2023-01-27 18:15:29,484 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 27 selfloop transitions, 13 changer transitions 30/70 dead transitions. [2023-01-27 18:15:29,484 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 70 transitions, 472 flow [2023-01-27 18:15:29,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 18:15:29,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 18:15:29,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 486 transitions. [2023-01-27 18:15:29,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4682080924855491 [2023-01-27 18:15:29,486 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 486 transitions. [2023-01-27 18:15:29,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 486 transitions. [2023-01-27 18:15:29,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:29,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 486 transitions. [2023-01-27 18:15:29,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 81.0) internal successors, (486), 6 states have internal predecessors, (486), 0 states have call successors, (0), 0 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 18:15:29,489 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:29,491 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 173.0) internal successors, (1211), 7 states have internal predecessors, (1211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:29,491 INFO L175 Difference]: Start difference. First operand has 38 places, 37 transitions, 198 flow. Second operand 6 states and 486 transitions. [2023-01-27 18:15:29,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 70 transitions, 472 flow [2023-01-27 18:15:29,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 70 transitions, 472 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 18:15:29,498 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 246 flow [2023-01-27 18:15:29,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=246, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2023-01-27 18:15:29,500 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 20 predicate places. [2023-01-27 18:15:29,500 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 246 flow [2023-01-27 18:15:29,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 74.6) internal successors, (373), 5 states have internal predecessors, (373), 0 states have call successors, (0), 0 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 18:15:29,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:29,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:29,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 18:15:29,501 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:29,501 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:29,501 INFO L85 PathProgramCache]: Analyzing trace with hash -1611175819, now seen corresponding path program 3 times [2023-01-27 18:15:29,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:29,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001163268] [2023-01-27 18:15:29,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:29,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:30,306 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 18:15:30,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:30,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001163268] [2023-01-27 18:15:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001163268] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:30,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:15:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445369615] [2023-01-27 18:15:30,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:30,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:15:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:30,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:15:30,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:15:30,309 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-27 18:15:30,309 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 0 states have call successors, (0), 0 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 18:15:30,309 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:30,309 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-27 18:15:30,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:30,670 INFO L130 PetriNetUnfolder]: 225/454 cut-off events. [2023-01-27 18:15:30,670 INFO L131 PetriNetUnfolder]: For 1209/1209 co-relation queries the response was YES. [2023-01-27 18:15:30,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1865 conditions, 454 events. 225/454 cut-off events. For 1209/1209 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2037 event pairs, 35 based on Foata normal form. 9/463 useless extension candidates. Maximal degree in co-relation 1843. Up to 242 conditions per place. [2023-01-27 18:15:30,674 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 45 selfloop transitions, 27 changer transitions 17/89 dead transitions. [2023-01-27 18:15:30,674 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 89 transitions, 739 flow [2023-01-27 18:15:30,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-27 18:15:30,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-27 18:15:30,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 932 transitions. [2023-01-27 18:15:30,677 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4144064028457092 [2023-01-27 18:15:30,677 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 932 transitions. [2023-01-27 18:15:30,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 932 transitions. [2023-01-27 18:15:30,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:30,678 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 932 transitions. [2023-01-27 18:15:30,680 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 71.6923076923077) internal successors, (932), 13 states have internal predecessors, (932), 0 states have call successors, (0), 0 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 18:15:30,682 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 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 18:15:30,683 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 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 18:15:30,683 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 246 flow. Second operand 13 states and 932 transitions. [2023-01-27 18:15:30,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 89 transitions, 739 flow [2023-01-27 18:15:30,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 89 transitions, 669 flow, removed 18 selfloop flow, removed 3 redundant places. [2023-01-27 18:15:30,689 INFO L231 Difference]: Finished difference. Result has 58 places, 52 transitions, 442 flow [2023-01-27 18:15:30,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=442, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2023-01-27 18:15:30,690 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-01-27 18:15:30,690 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 442 flow [2023-01-27 18:15:30,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.44444444444444) internal successors, (607), 9 states have internal predecessors, (607), 0 states have call successors, (0), 0 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 18:15:30,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:30,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:30,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 18:15:30,691 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:30,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:30,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1038168937, now seen corresponding path program 4 times [2023-01-27 18:15:30,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:30,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226108066] [2023-01-27 18:15:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:30,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:31,227 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 18:15:31,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:31,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226108066] [2023-01-27 18:15:31,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226108066] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:31,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 18:15:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485506884] [2023-01-27 18:15:31,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:31,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-27 18:15:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-27 18:15:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-27 18:15:31,229 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-01-27 18:15:31,230 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 52 transitions, 442 flow. Second operand has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 18:15:31,230 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:31,230 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-01-27 18:15:31,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:31,415 INFO L130 PetriNetUnfolder]: 223/442 cut-off events. [2023-01-27 18:15:31,415 INFO L131 PetriNetUnfolder]: For 1509/1509 co-relation queries the response was YES. [2023-01-27 18:15:31,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2005 conditions, 442 events. 223/442 cut-off events. For 1509/1509 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1933 event pairs, 32 based on Foata normal form. 3/445 useless extension candidates. Maximal degree in co-relation 1977. Up to 268 conditions per place. [2023-01-27 18:15:31,419 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 38 selfloop transitions, 24 changer transitions 2/64 dead transitions. [2023-01-27 18:15:31,419 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 64 transitions, 657 flow [2023-01-27 18:15:31,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-27 18:15:31,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-27 18:15:31,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2023-01-27 18:15:31,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44971098265895953 [2023-01-27 18:15:31,421 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 389 transitions. [2023-01-27 18:15:31,421 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 389 transitions. [2023-01-27 18:15:31,422 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:31,422 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 389 transitions. [2023-01-27 18:15:31,423 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 77.8) internal successors, (389), 5 states have internal predecessors, (389), 0 states have call successors, (0), 0 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 18:15:31,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 18:15:31,424 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 173.0) internal successors, (1038), 6 states have internal predecessors, (1038), 0 states have call successors, (0), 0 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 18:15:31,424 INFO L175 Difference]: Start difference. First operand has 58 places, 52 transitions, 442 flow. Second operand 5 states and 389 transitions. [2023-01-27 18:15:31,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 64 transitions, 657 flow [2023-01-27 18:15:31,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 64 transitions, 613 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:31,432 INFO L231 Difference]: Finished difference. Result has 60 places, 57 transitions, 556 flow [2023-01-27 18:15:31,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=412, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=556, PETRI_PLACES=60, PETRI_TRANSITIONS=57} [2023-01-27 18:15:31,434 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 34 predicate places. [2023-01-27 18:15:31,434 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 57 transitions, 556 flow [2023-01-27 18:15:31,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 73.6) internal successors, (368), 5 states have internal predecessors, (368), 0 states have call successors, (0), 0 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 18:15:31,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:31,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:31,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-01-27 18:15:31,437 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:31,443 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:31,444 INFO L85 PathProgramCache]: Analyzing trace with hash -607369889, now seen corresponding path program 5 times [2023-01-27 18:15:31,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:31,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187001339] [2023-01-27 18:15:31,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:31,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:31,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:32,425 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 18:15:32,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:32,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187001339] [2023-01-27 18:15:32,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187001339] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:32,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:32,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:15:32,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325363771] [2023-01-27 18:15:32,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:32,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:15:32,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:32,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:15:32,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:15:32,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-01-27 18:15:32,429 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 57 transitions, 556 flow. Second operand has 9 states, 9 states have (on average 68.44444444444444) internal successors, (616), 9 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 18:15:32,429 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:32,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-01-27 18:15:32,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:32,721 INFO L130 PetriNetUnfolder]: 253/497 cut-off events. [2023-01-27 18:15:32,721 INFO L131 PetriNetUnfolder]: For 2031/2031 co-relation queries the response was YES. [2023-01-27 18:15:32,723 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2331 conditions, 497 events. 253/497 cut-off events. For 2031/2031 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2278 event pairs, 57 based on Foata normal form. 1/498 useless extension candidates. Maximal degree in co-relation 2301. Up to 254 conditions per place. [2023-01-27 18:15:32,726 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 55 selfloop transitions, 33 changer transitions 3/91 dead transitions. [2023-01-27 18:15:32,726 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 91 transitions, 991 flow [2023-01-27 18:15:32,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-27 18:15:32,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-27 18:15:32,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 595 transitions. [2023-01-27 18:15:32,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42991329479768786 [2023-01-27 18:15:32,729 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 595 transitions. [2023-01-27 18:15:32,729 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 595 transitions. [2023-01-27 18:15:32,729 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:32,729 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 595 transitions. [2023-01-27 18:15:32,731 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 74.375) internal successors, (595), 8 states have internal predecessors, (595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 18:15:32,733 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 18:15:32,733 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 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 18:15:32,733 INFO L175 Difference]: Start difference. First operand has 60 places, 57 transitions, 556 flow. Second operand 8 states and 595 transitions. [2023-01-27 18:15:32,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 91 transitions, 991 flow [2023-01-27 18:15:32,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 91 transitions, 977 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-27 18:15:32,743 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 796 flow [2023-01-27 18:15:32,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=546, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=796, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2023-01-27 18:15:32,744 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-01-27 18:15:32,744 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 796 flow [2023-01-27 18:15:32,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 68.44444444444444) internal successors, (616), 9 states have internal predecessors, (616), 0 states have call successors, (0), 0 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 18:15:32,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:32,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:32,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-01-27 18:15:32,745 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:32,745 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:32,746 INFO L85 PathProgramCache]: Analyzing trace with hash -264639987, now seen corresponding path program 6 times [2023-01-27 18:15:32,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:32,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389840380] [2023-01-27 18:15:32,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:32,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:32,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:33,853 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 18:15:33,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:33,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389840380] [2023-01-27 18:15:33,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389840380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:33,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:33,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:15:33,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418646741] [2023-01-27 18:15:33,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:33,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:15:33,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:33,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:15:33,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:15:33,855 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 173 [2023-01-27 18:15:33,856 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 796 flow. Second operand has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 18:15:33,856 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:33,856 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 173 [2023-01-27 18:15:33,856 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:34,280 INFO L130 PetriNetUnfolder]: 249/492 cut-off events. [2023-01-27 18:15:34,280 INFO L131 PetriNetUnfolder]: For 2676/2676 co-relation queries the response was YES. [2023-01-27 18:15:34,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2515 conditions, 492 events. 249/492 cut-off events. For 2676/2676 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2253 event pairs, 63 based on Foata normal form. 5/497 useless extension candidates. Maximal degree in co-relation 2482. Up to 259 conditions per place. [2023-01-27 18:15:34,285 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 64 selfloop transitions, 29 changer transitions 2/95 dead transitions. [2023-01-27 18:15:34,285 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 95 transitions, 1145 flow [2023-01-27 18:15:34,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:15:34,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:15:34,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 660 transitions. [2023-01-27 18:15:34,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4238921001926782 [2023-01-27 18:15:34,287 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 660 transitions. [2023-01-27 18:15:34,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 660 transitions. [2023-01-27 18:15:34,288 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:34,288 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 660 transitions. [2023-01-27 18:15:34,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 73.33333333333333) internal successors, (660), 9 states have internal predecessors, (660), 0 states have call successors, (0), 0 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 18:15:34,291 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 18:15:34,292 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 18:15:34,292 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 796 flow. Second operand 9 states and 660 transitions. [2023-01-27 18:15:34,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 95 transitions, 1145 flow [2023-01-27 18:15:34,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 95 transitions, 1115 flow, removed 15 selfloop flow, removed 0 redundant places. [2023-01-27 18:15:34,303 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 910 flow [2023-01-27 18:15:34,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=772, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=910, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2023-01-27 18:15:34,303 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 53 predicate places. [2023-01-27 18:15:34,303 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 910 flow [2023-01-27 18:15:34,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 68.85714285714286) internal successors, (482), 7 states have internal predecessors, (482), 0 states have call successors, (0), 0 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 18:15:34,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:34,304 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:34,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 18:15:34,304 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:34,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:34,305 INFO L85 PathProgramCache]: Analyzing trace with hash -2118468119, now seen corresponding path program 1 times [2023-01-27 18:15:34,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:34,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853621495] [2023-01-27 18:15:34,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:34,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:34,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:35,046 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 18:15:35,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:35,047 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853621495] [2023-01-27 18:15:35,047 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853621495] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:35,047 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:35,047 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:15:35,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327909292] [2023-01-27 18:15:35,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:35,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:15:35,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:35,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:15:35,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:15:35,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 173 [2023-01-27 18:15:35,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 69.55555555555556) internal successors, (626), 9 states have internal predecessors, (626), 0 states have call successors, (0), 0 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 18:15:35,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:35,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 173 [2023-01-27 18:15:35,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:35,397 INFO L130 PetriNetUnfolder]: 252/504 cut-off events. [2023-01-27 18:15:35,397 INFO L131 PetriNetUnfolder]: For 3538/3538 co-relation queries the response was YES. [2023-01-27 18:15:35,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2736 conditions, 504 events. 252/504 cut-off events. For 3538/3538 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2328 event pairs, 48 based on Foata normal form. 6/510 useless extension candidates. Maximal degree in co-relation 2698. Up to 292 conditions per place. [2023-01-27 18:15:35,402 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 58 selfloop transitions, 30 changer transitions 10/98 dead transitions. [2023-01-27 18:15:35,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 98 transitions, 1233 flow [2023-01-27 18:15:35,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 18:15:35,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 18:15:35,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 671 transitions. [2023-01-27 18:15:35,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4309569685292229 [2023-01-27 18:15:35,405 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 671 transitions. [2023-01-27 18:15:35,405 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 671 transitions. [2023-01-27 18:15:35,405 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:35,405 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 671 transitions. [2023-01-27 18:15:35,407 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 74.55555555555556) internal successors, (671), 9 states have internal predecessors, (671), 0 states have call successors, (0), 0 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 18:15:35,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 18:15:35,409 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 173.0) internal successors, (1730), 10 states have internal predecessors, (1730), 0 states have call successors, (0), 0 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 18:15:35,409 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 910 flow. Second operand 9 states and 671 transitions. [2023-01-27 18:15:35,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 98 transitions, 1233 flow [2023-01-27 18:15:35,419 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 98 transitions, 1161 flow, removed 7 selfloop flow, removed 7 redundant places. [2023-01-27 18:15:35,422 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 917 flow [2023-01-27 18:15:35,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=917, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-01-27 18:15:35,422 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 56 predicate places. [2023-01-27 18:15:35,423 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 917 flow [2023-01-27 18:15:35,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 69.55555555555556) internal successors, (626), 9 states have internal predecessors, (626), 0 states have call successors, (0), 0 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 18:15:35,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:35,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:35,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-01-27 18:15:35,423 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:35,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:35,424 INFO L85 PathProgramCache]: Analyzing trace with hash -518458967, now seen corresponding path program 2 times [2023-01-27 18:15:35,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:35,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365598185] [2023-01-27 18:15:35,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:35,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:35,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:36,635 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 18:15:36,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:36,635 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365598185] [2023-01-27 18:15:36,635 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365598185] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:36,635 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:36,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 18:15:36,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683051220] [2023-01-27 18:15:36,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:36,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 18:15:36,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:36,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 18:15:36,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2023-01-27 18:15:36,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 173 [2023-01-27 18:15:36,638 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 917 flow. Second operand has 11 states, 11 states have (on average 60.27272727272727) internal successors, (663), 11 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 18:15:36,638 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:36,638 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 173 [2023-01-27 18:15:36,638 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:37,260 INFO L130 PetriNetUnfolder]: 284/573 cut-off events. [2023-01-27 18:15:37,261 INFO L131 PetriNetUnfolder]: For 3932/3932 co-relation queries the response was YES. [2023-01-27 18:15:37,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3126 conditions, 573 events. 284/573 cut-off events. For 3932/3932 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2792 event pairs, 39 based on Foata normal form. 6/579 useless extension candidates. Maximal degree in co-relation 3089. Up to 348 conditions per place. [2023-01-27 18:15:37,266 INFO L137 encePairwiseOnDemand]: 162/173 looper letters, 60 selfloop transitions, 19 changer transitions 48/127 dead transitions. [2023-01-27 18:15:37,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 127 transitions, 1619 flow [2023-01-27 18:15:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:15:37,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:15:37,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 784 transitions. [2023-01-27 18:15:37,270 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37764932562620424 [2023-01-27 18:15:37,270 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 784 transitions. [2023-01-27 18:15:37,270 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 784 transitions. [2023-01-27 18:15:37,270 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:37,271 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 784 transitions. [2023-01-27 18:15:37,272 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 65.33333333333333) internal successors, (784), 12 states have internal predecessors, (784), 0 states have call successors, (0), 0 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 18:15:37,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 18:15:37,276 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 18:15:37,276 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 917 flow. Second operand 12 states and 784 transitions. [2023-01-27 18:15:37,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 127 transitions, 1619 flow [2023-01-27 18:15:37,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 127 transitions, 1567 flow, removed 1 selfloop flow, removed 5 redundant places. [2023-01-27 18:15:37,291 INFO L231 Difference]: Finished difference. Result has 97 places, 70 transitions, 910 flow [2023-01-27 18:15:37,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=880, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=910, PETRI_PLACES=97, PETRI_TRANSITIONS=70} [2023-01-27 18:15:37,292 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 71 predicate places. [2023-01-27 18:15:37,293 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 70 transitions, 910 flow [2023-01-27 18:15:37,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.27272727272727) internal successors, (663), 11 states have internal predecessors, (663), 0 states have call successors, (0), 0 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 18:15:37,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:37,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:37,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-01-27 18:15:37,293 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:37,294 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:37,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1506747961, now seen corresponding path program 3 times [2023-01-27 18:15:37,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:37,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392057887] [2023-01-27 18:15:37,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:37,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:37,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:38,596 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 18:15:38,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:38,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392057887] [2023-01-27 18:15:38,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392057887] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:38,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:38,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:15:38,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941032820] [2023-01-27 18:15:38,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:38,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:15:38,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:38,598 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:15:38,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:15:38,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-27 18:15:38,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 70 transitions, 910 flow. Second operand has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 18:15:38,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:38,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-27 18:15:38,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:38,803 INFO L130 PetriNetUnfolder]: 179/370 cut-off events. [2023-01-27 18:15:38,804 INFO L131 PetriNetUnfolder]: For 3139/3139 co-relation queries the response was YES. [2023-01-27 18:15:38,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2347 conditions, 370 events. 179/370 cut-off events. For 3139/3139 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1563 event pairs, 29 based on Foata normal form. 6/376 useless extension candidates. Maximal degree in co-relation 2302. Up to 269 conditions per place. [2023-01-27 18:15:38,808 INFO L137 encePairwiseOnDemand]: 164/173 looper letters, 49 selfloop transitions, 22 changer transitions 13/84 dead transitions. [2023-01-27 18:15:38,808 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 84 transitions, 1172 flow [2023-01-27 18:15:38,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:15:38,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:15:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 507 transitions. [2023-01-27 18:15:38,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4186622625928984 [2023-01-27 18:15:38,810 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 507 transitions. [2023-01-27 18:15:38,810 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 507 transitions. [2023-01-27 18:15:38,810 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:38,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 507 transitions. [2023-01-27 18:15:38,812 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 72.42857142857143) internal successors, (507), 7 states have internal predecessors, (507), 0 states have call successors, (0), 0 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 18:15:38,814 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 18:15:38,814 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 18:15:38,814 INFO L175 Difference]: Start difference. First operand has 97 places, 70 transitions, 910 flow. Second operand 7 states and 507 transitions. [2023-01-27 18:15:38,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 84 transitions, 1172 flow [2023-01-27 18:15:38,827 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 84 transitions, 1085 flow, removed 24 selfloop flow, removed 10 redundant places. [2023-01-27 18:15:38,828 INFO L231 Difference]: Finished difference. Result has 88 places, 65 transitions, 803 flow [2023-01-27 18:15:38,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=833, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=803, PETRI_PLACES=88, PETRI_TRANSITIONS=65} [2023-01-27 18:15:38,829 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 62 predicate places. [2023-01-27 18:15:38,830 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 65 transitions, 803 flow [2023-01-27 18:15:38,830 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 18:15:38,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:38,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:38,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-01-27 18:15:38,830 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:38,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:38,831 INFO L85 PathProgramCache]: Analyzing trace with hash 385804551, now seen corresponding path program 4 times [2023-01-27 18:15:38,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:38,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554529454] [2023-01-27 18:15:38,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:38,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:38,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:39,652 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 18:15:39,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:39,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554529454] [2023-01-27 18:15:39,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554529454] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:39,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:39,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-01-27 18:15:39,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296842344] [2023-01-27 18:15:39,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:39,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-01-27 18:15:39,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:39,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-01-27 18:15:39,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2023-01-27 18:15:39,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 173 [2023-01-27 18:15:39,655 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 65 transitions, 803 flow. Second operand has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 18:15:39,655 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:39,656 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 173 [2023-01-27 18:15:39,656 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:40,074 INFO L130 PetriNetUnfolder]: 191/395 cut-off events. [2023-01-27 18:15:40,075 INFO L131 PetriNetUnfolder]: For 3040/3040 co-relation queries the response was YES. [2023-01-27 18:15:40,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2244 conditions, 395 events. 191/395 cut-off events. For 3040/3040 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1696 event pairs, 23 based on Foata normal form. 10/405 useless extension candidates. Maximal degree in co-relation 2205. Up to 117 conditions per place. [2023-01-27 18:15:40,078 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 48 selfloop transitions, 12 changer transitions 41/101 dead transitions. [2023-01-27 18:15:40,078 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 101 transitions, 1237 flow [2023-01-27 18:15:40,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 18:15:40,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 18:15:40,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 858 transitions. [2023-01-27 18:15:40,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41329479768786126 [2023-01-27 18:15:40,082 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 858 transitions. [2023-01-27 18:15:40,082 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 858 transitions. [2023-01-27 18:15:40,083 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:40,083 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 858 transitions. [2023-01-27 18:15:40,085 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 71.5) internal successors, (858), 12 states have internal predecessors, (858), 0 states have call successors, (0), 0 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 18:15:40,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 18:15:40,088 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 173.0) internal successors, (2249), 13 states have internal predecessors, (2249), 0 states have call successors, (0), 0 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 18:15:40,088 INFO L175 Difference]: Start difference. First operand has 88 places, 65 transitions, 803 flow. Second operand 12 states and 858 transitions. [2023-01-27 18:15:40,088 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 101 transitions, 1237 flow [2023-01-27 18:15:40,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 101 transitions, 1146 flow, removed 5 selfloop flow, removed 9 redundant places. [2023-01-27 18:15:40,099 INFO L231 Difference]: Finished difference. Result has 90 places, 43 transitions, 515 flow [2023-01-27 18:15:40,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=515, PETRI_PLACES=90, PETRI_TRANSITIONS=43} [2023-01-27 18:15:40,100 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 64 predicate places. [2023-01-27 18:15:40,100 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 43 transitions, 515 flow [2023-01-27 18:15:40,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 67.55555555555556) internal successors, (608), 9 states have internal predecessors, (608), 0 states have call successors, (0), 0 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 18:15:40,101 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:40,101 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:40,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-01-27 18:15:40,101 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:40,102 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:40,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1893787813, now seen corresponding path program 1 times [2023-01-27 18:15:40,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:40,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293912907] [2023-01-27 18:15:40,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:40,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:40,649 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 18:15:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:40,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293912907] [2023-01-27 18:15:40,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1293912907] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:40,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:40,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:15:40,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566257513] [2023-01-27 18:15:40,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:15:40,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:40,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:15:40,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:15:40,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-01-27 18:15:40,651 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 43 transitions, 515 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 18:15:40,651 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:40,651 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-01-27 18:15:40,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:40,844 INFO L130 PetriNetUnfolder]: 76/183 cut-off events. [2023-01-27 18:15:40,844 INFO L131 PetriNetUnfolder]: For 2068/2068 co-relation queries the response was YES. [2023-01-27 18:15:40,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1086 conditions, 183 events. 76/183 cut-off events. For 2068/2068 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 626 event pairs, 27 based on Foata normal form. 10/193 useless extension candidates. Maximal degree in co-relation 1047. Up to 92 conditions per place. [2023-01-27 18:15:40,846 INFO L137 encePairwiseOnDemand]: 163/173 looper letters, 30 selfloop transitions, 10 changer transitions 18/58 dead transitions. [2023-01-27 18:15:40,846 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 58 transitions, 775 flow [2023-01-27 18:15:40,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:15:40,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:15:40,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 535 transitions. [2023-01-27 18:15:40,848 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44178364987613544 [2023-01-27 18:15:40,848 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 535 transitions. [2023-01-27 18:15:40,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 535 transitions. [2023-01-27 18:15:40,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:40,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 535 transitions. [2023-01-27 18:15:40,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.42857142857143) internal successors, (535), 7 states have internal predecessors, (535), 0 states have call successors, (0), 0 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 18:15:40,852 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 18:15:40,853 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 18:15:40,853 INFO L175 Difference]: Start difference. First operand has 90 places, 43 transitions, 515 flow. Second operand 7 states and 535 transitions. [2023-01-27 18:15:40,853 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 58 transitions, 775 flow [2023-01-27 18:15:40,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 58 transitions, 604 flow, removed 53 selfloop flow, removed 23 redundant places. [2023-01-27 18:15:40,858 INFO L231 Difference]: Finished difference. Result has 68 places, 38 transitions, 367 flow [2023-01-27 18:15:40,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=388, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=367, PETRI_PLACES=68, PETRI_TRANSITIONS=38} [2023-01-27 18:15:40,859 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 42 predicate places. [2023-01-27 18:15:40,859 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 38 transitions, 367 flow [2023-01-27 18:15:40,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 18:15:40,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 18:15:40,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 18:15:40,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-01-27 18:15:40,860 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-27 18:15:40,860 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 18:15:40,860 INFO L85 PathProgramCache]: Analyzing trace with hash -916025961, now seen corresponding path program 2 times [2023-01-27 18:15:40,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 18:15:40,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768252176] [2023-01-27 18:15:40,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 18:15:40,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 18:15:40,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 18:15:41,362 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 18:15:41,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 18:15:41,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768252176] [2023-01-27 18:15:41,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768252176] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 18:15:41,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 18:15:41,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-01-27 18:15:41,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037324048] [2023-01-27 18:15:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 18:15:41,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-27 18:15:41,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 18:15:41,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-27 18:15:41,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-01-27 18:15:41,366 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 173 [2023-01-27 18:15:41,367 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 38 transitions, 367 flow. Second operand has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 18:15:41,367 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 18:15:41,367 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 173 [2023-01-27 18:15:41,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 18:15:41,501 INFO L130 PetriNetUnfolder]: 39/104 cut-off events. [2023-01-27 18:15:41,501 INFO L131 PetriNetUnfolder]: For 594/594 co-relation queries the response was YES. [2023-01-27 18:15:41,502 INFO L83 FinitePrefix]: Finished finitePrefix Result has 502 conditions, 104 events. 39/104 cut-off events. For 594/594 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 270 event pairs, 15 based on Foata normal form. 10/114 useless extension candidates. Maximal degree in co-relation 481. Up to 32 conditions per place. [2023-01-27 18:15:41,502 INFO L137 encePairwiseOnDemand]: 165/173 looper letters, 0 selfloop transitions, 0 changer transitions 40/40 dead transitions. [2023-01-27 18:15:41,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 40 transitions, 425 flow [2023-01-27 18:15:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-27 18:15:41,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-27 18:15:41,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 527 transitions. [2023-01-27 18:15:41,505 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.435177539223782 [2023-01-27 18:15:41,505 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 527 transitions. [2023-01-27 18:15:41,505 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 527 transitions. [2023-01-27 18:15:41,506 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 18:15:41,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 527 transitions. [2023-01-27 18:15:41,508 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 0 states have call successors, (0), 0 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 18:15:41,510 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 18:15:41,510 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 0 states have call successors, (0), 0 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 18:15:41,510 INFO L175 Difference]: Start difference. First operand has 68 places, 38 transitions, 367 flow. Second operand 7 states and 527 transitions. [2023-01-27 18:15:41,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 40 transitions, 425 flow [2023-01-27 18:15:41,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 40 transitions, 355 flow, removed 11 selfloop flow, removed 13 redundant places. [2023-01-27 18:15:41,514 INFO L231 Difference]: Finished difference. Result has 58 places, 0 transitions, 0 flow [2023-01-27 18:15:41,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=265, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=58, PETRI_TRANSITIONS=0} [2023-01-27 18:15:41,515 INFO L281 CegarLoopForPetriNet]: 26 programPoint places, 32 predicate places. [2023-01-27 18:15:41,515 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 0 transitions, 0 flow [2023-01-27 18:15:41,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.14285714285714) internal successors, (512), 7 states have internal predecessors, (512), 0 states have call successors, (0), 0 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 18:15:41,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-27 18:15:41,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-01-27 18:15:41,517 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-27 18:15:41,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-27 18:15:41,518 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-01-27 18:15:41,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-27 18:15:41,518 INFO L445 BasicCegarLoop]: Path program histogram: [6, 4, 2, 1, 1, 1, 1] [2023-01-27 18:15:41,522 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 18:15:41,522 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 18:15:41,526 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 06:15:41 BasicIcfg [2023-01-27 18:15:41,526 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 18:15:41,526 INFO L158 Benchmark]: Toolchain (without parser) took 23241.21ms. Allocated memory was 352.3MB in the beginning and 1.1GB in the end (delta: 717.2MB). Free memory was 293.0MB in the beginning and 549.9MB in the end (delta: -256.8MB). Peak memory consumption was 462.0MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,527 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 352.3MB. Free memory is still 299.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 18:15:41,527 INFO L158 Benchmark]: CACSL2BoogieTranslator took 510.43ms. Allocated memory was 352.3MB in the beginning and 618.7MB in the end (delta: 266.3MB). Free memory was 292.8MB in the beginning and 585.2MB in the end (delta: -292.4MB). Peak memory consumption was 31.7MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,527 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.53ms. Allocated memory is still 618.7MB. Free memory was 585.2MB in the beginning and 581.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,528 INFO L158 Benchmark]: Boogie Preprocessor took 56.21ms. Allocated memory is still 618.7MB. Free memory was 581.7MB in the beginning and 579.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,528 INFO L158 Benchmark]: RCFGBuilder took 773.39ms. Allocated memory is still 618.7MB. Free memory was 579.6MB in the beginning and 529.2MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,528 INFO L158 Benchmark]: TraceAbstraction took 21831.06ms. Allocated memory was 618.7MB in the beginning and 1.1GB in the end (delta: 450.9MB). Free memory was 528.2MB in the beginning and 549.9MB in the end (delta: -21.7MB). Peak memory consumption was 430.3MB. Max. memory is 16.0GB. [2023-01-27 18:15:41,529 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 352.3MB. Free memory is still 299.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 510.43ms. Allocated memory was 352.3MB in the beginning and 618.7MB in the end (delta: 266.3MB). Free memory was 292.8MB in the beginning and 585.2MB in the end (delta: -292.4MB). Peak memory consumption was 31.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 55.53ms. Allocated memory is still 618.7MB. Free memory was 585.2MB in the beginning and 581.7MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 56.21ms. Allocated memory is still 618.7MB. Free memory was 581.7MB in the beginning and 579.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 773.39ms. Allocated memory is still 618.7MB. Free memory was 579.6MB in the beginning and 529.2MB in the end (delta: 50.3MB). Peak memory consumption was 50.3MB. Max. memory is 16.0GB. * TraceAbstraction took 21831.06ms. Allocated memory was 618.7MB in the beginning and 1.1GB in the end (delta: 450.9MB). Free memory was 528.2MB in the beginning and 549.9MB in the end (delta: -21.7MB). Peak memory consumption was 430.3MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 95 PlacesBefore, 26 PlacesAfterwards, 90 TransitionsBefore, 19 TransitionsAfterwards, 1244 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 6 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3453 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1492, independent: 1333, independent conditional: 0, independent unconditional: 1333, dependent: 159, dependent conditional: 0, dependent unconditional: 159, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 682, independent: 644, independent conditional: 0, independent unconditional: 644, dependent: 38, dependent conditional: 0, dependent unconditional: 38, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1492, independent: 689, independent conditional: 0, independent unconditional: 689, dependent: 121, dependent conditional: 0, dependent unconditional: 121, unknown: 682, unknown conditional: 0, unknown unconditional: 682] , Statistics on independence cache: Total cache size (in pairs): 47, Positive cache size: 34, Positive conditional cache size: 0, Positive unconditional cache size: 34, Negative cache size: 13, Negative conditional cache size: 0, Negative unconditional cache size: 13, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: 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 5 procedures, 113 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 21.7s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 4.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 360 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 360 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 280 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1832 IncrementalHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 280 mSolverCounterUnsat, 0 mSDtfsCounter, 1832 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 125 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=917occurred in iteration=11, InterpolantAutomatonStates: 116, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 12.0s InterpolantComputationTime, 198 NumberOfCodeBlocks, 198 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 3111 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-27 18:15:41,544 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...