./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:28:15,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:28:15,817 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:28:15,856 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:28:15,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:28:15,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:28:15,859 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:28:15,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:28:15,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:28:15,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:28:15,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:28:15,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:28:15,866 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:28:15,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:28:15,868 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:28:15,870 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:28:15,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:28:15,874 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:28:15,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:28:15,876 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:28:15,880 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:28:15,881 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:28:15,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:28:15,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:28:15,882 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:28:15,885 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:28:15,886 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:28:15,886 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:28:15,887 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:28:15,887 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:28:15,888 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:28:15,888 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:28:15,889 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:28:15,890 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:28:15,890 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:28:15,891 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:28:15,891 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:28:15,892 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:28:15,892 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:28:15,892 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:28:15,893 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:28:15,894 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:28:15,894 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 10:28:15,921 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:28:15,924 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:28:15,924 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:28:15,924 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:28:15,925 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:28:15,925 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:28:15,926 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:28:15,926 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:28:15,926 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:28:15,927 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:28:15,927 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 10:28:15,927 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:28:15,927 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 10:28:15,927 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:28:15,927 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:28:15,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:28:15,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:28:15,928 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 10:28:15,928 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:28:15,928 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:28:15,928 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:28:15,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:28:15,929 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:28:15,929 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:28:15,929 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:15,929 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:28:15,930 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:28:15,930 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:28:15,930 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:28:15,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:28:15,930 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:28:15,930 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:28:15,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:28:15,931 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b9f50bcc1a62fff86b613ffbbe182d8b5828efa44efacd776b022a56af4d4d [2022-07-12 10:28:16,099 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:28:16,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:28:16,117 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:28:16,118 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:28:16,118 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:28:16,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-07-12 10:28:16,163 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b84375b46/0e90d06467f44f50af79d6de5121c127/FLAG9bf104d63 [2022-07-12 10:28:16,467 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:28:16,467 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c [2022-07-12 10:28:16,472 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b84375b46/0e90d06467f44f50af79d6de5121c127/FLAG9bf104d63 [2022-07-12 10:28:16,896 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b84375b46/0e90d06467f44f50af79d6de5121c127 [2022-07-12 10:28:16,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:28:16,900 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:28:16,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:16,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:28:16,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:28:16,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:16" (1/1) ... [2022-07-12 10:28:16,904 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@340c75cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:16, skipping insertion in model container [2022-07-12 10:28:16,904 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:28:16" (1/1) ... [2022-07-12 10:28:16,910 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:28:16,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:28:17,095 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-07-12 10:28:17,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:17,102 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:28:17,128 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/parallel-ticket-4.wvr.c[3526,3539] [2022-07-12 10:28:17,129 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:28:17,138 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:28:17,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17 WrapperNode [2022-07-12 10:28:17,139 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:28:17,140 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:17,140 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:28:17,140 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:28:17,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,149 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,166 INFO L137 Inliner]: procedures = 23, calls = 70, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 198 [2022-07-12 10:28:17,166 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:28:17,168 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:28:17,168 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:28:17,168 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:28:17,173 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,173 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,175 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,176 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,179 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,180 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,181 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:28:17,184 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:28:17,184 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:28:17,184 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:28:17,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (1/1) ... [2022-07-12 10:28:17,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:28:17,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:28:17,230 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) [2022-07-12 10:28:17,232 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 [2022-07-12 10:28:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:28:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-12 10:28:17,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-12 10:28:17,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-12 10:28:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-12 10:28:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-07-12 10:28:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-07-12 10:28:17,259 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-07-12 10:28:17,259 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-07-12 10:28:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:28:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:28:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:28:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-07-12 10:28:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-07-12 10:28:17,260 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:28:17,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:28:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:28:17,261 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:28:17,262 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-12 10:28:17,345 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:28:17,346 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:28:17,549 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:28:17,584 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:28:17,584 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-12 10:28:17,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:17 BoogieIcfgContainer [2022-07-12 10:28:17,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:28:17,587 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:28:17,587 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:28:17,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:28:17,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:28:16" (1/3) ... [2022-07-12 10:28:17,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7086442a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:17, skipping insertion in model container [2022-07-12 10:28:17,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:28:17" (2/3) ... [2022-07-12 10:28:17,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7086442a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:28:17, skipping insertion in model container [2022-07-12 10:28:17,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:17" (3/3) ... [2022-07-12 10:28:17,592 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-4.wvr.c [2022-07-12 10:28:17,595 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-12 10:28:17,601 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:28:17,601 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:28:17,601 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-12 10:28:17,662 INFO L135 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-07-12 10:28:17,706 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 153 places, 142 transitions, 316 flow [2022-07-12 10:28:17,779 INFO L129 PetriNetUnfolder]: 2/138 cut-off events. [2022-07-12 10:28:17,780 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:28:17,782 INFO L84 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 138 events. 2/138 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 55 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 101. Up to 2 conditions per place. [2022-07-12 10:28:17,783 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 142 transitions, 316 flow [2022-07-12 10:28:17,788 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 136 places, 125 transitions, 274 flow [2022-07-12 10:28:17,801 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:28:17,808 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@75bf3b91, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@205af466 [2022-07-12 10:28:17,808 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-07-12 10:28:17,844 INFO L129 PetriNetUnfolder]: 2/124 cut-off events. [2022-07-12 10:28:17,844 INFO L130 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-07-12 10:28:17,844 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:17,845 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:17,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:17,850 INFO L85 PathProgramCache]: Analyzing trace with hash 371553834, now seen corresponding path program 1 times [2022-07-12 10:28:17,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:17,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902244402] [2022-07-12 10:28:17,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:17,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:18,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:18,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:18,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902244402] [2022-07-12 10:28:18,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902244402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:18,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:18,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:18,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824924011] [2022-07-12 10:28:18,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:18,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:18,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:18,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:18,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:18,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-07-12 10:28:18,516 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 125 transitions, 274 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:18,516 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:18,516 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-07-12 10:28:18,517 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:19,309 INFO L129 PetriNetUnfolder]: 3366/5967 cut-off events. [2022-07-12 10:28:19,309 INFO L130 PetriNetUnfolder]: For 1096/1114 co-relation queries the response was YES. [2022-07-12 10:28:19,321 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11693 conditions, 5967 events. 3366/5967 cut-off events. For 1096/1114 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 39941 event pairs, 2346 based on Foata normal form. 3/5771 useless extension candidates. Maximal degree in co-relation 9336. Up to 2258 conditions per place. [2022-07-12 10:28:19,344 INFO L132 encePairwiseOnDemand]: 125/142 looper letters, 67 selfloop transitions, 13 changer transitions 12/176 dead transitions. [2022-07-12 10:28:19,345 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 176 transitions, 593 flow [2022-07-12 10:28:19,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:28:19,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:28:19,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1196 transitions. [2022-07-12 10:28:19,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.765685019206146 [2022-07-12 10:28:19,358 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1196 transitions. [2022-07-12 10:28:19,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1196 transitions. [2022-07-12 10:28:19,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:19,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1196 transitions. [2022-07-12 10:28:19,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 108.72727272727273) internal successors, (1196), 11 states have internal predecessors, (1196), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:19,371 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:19,372 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:19,373 INFO L186 Difference]: Start difference. First operand has 136 places, 125 transitions, 274 flow. Second operand 11 states and 1196 transitions. [2022-07-12 10:28:19,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 176 transitions, 593 flow [2022-07-12 10:28:19,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 176 transitions, 555 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-07-12 10:28:19,381 INFO L242 Difference]: Finished difference. Result has 143 places, 128 transitions, 325 flow [2022-07-12 10:28:19,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=254, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=325, PETRI_PLACES=143, PETRI_TRANSITIONS=128} [2022-07-12 10:28:19,385 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 7 predicate places. [2022-07-12 10:28:19,385 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 128 transitions, 325 flow [2022-07-12 10:28:19,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:19,386 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:19,386 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:19,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:28:19,386 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:19,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:19,387 INFO L85 PathProgramCache]: Analyzing trace with hash -2033235304, now seen corresponding path program 2 times [2022-07-12 10:28:19,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:19,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092179845] [2022-07-12 10:28:19,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:19,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:19,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:19,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:19,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:19,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092179845] [2022-07-12 10:28:19,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092179845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:19,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:19,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:19,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867811599] [2022-07-12 10:28:19,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:19,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:19,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:19,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:19,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:19,653 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 142 [2022-07-12 10:28:19,654 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 128 transitions, 325 flow. Second operand has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:19,654 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:19,654 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 142 [2022-07-12 10:28:19,654 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:20,386 INFO L129 PetriNetUnfolder]: 3250/6205 cut-off events. [2022-07-12 10:28:20,387 INFO L130 PetriNetUnfolder]: For 2143/2143 co-relation queries the response was YES. [2022-07-12 10:28:20,398 INFO L84 FinitePrefix]: Finished finitePrefix Result has 13401 conditions, 6205 events. 3250/6205 cut-off events. For 2143/2143 co-relation queries the response was YES. Maximal size of possible extension queue 324. Compared 45512 event pairs, 1474 based on Foata normal form. 1/6038 useless extension candidates. Maximal degree in co-relation 13388. Up to 2935 conditions per place. [2022-07-12 10:28:20,417 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 46 selfloop transitions, 11 changer transitions 37/178 dead transitions. [2022-07-12 10:28:20,417 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 178 transitions, 667 flow [2022-07-12 10:28:20,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:20,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:20,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1089 transitions. [2022-07-12 10:28:20,419 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7669014084507042 [2022-07-12 10:28:20,420 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1089 transitions. [2022-07-12 10:28:20,420 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1089 transitions. [2022-07-12 10:28:20,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:20,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1089 transitions. [2022-07-12 10:28:20,422 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 108.9) internal successors, (1089), 10 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:20,424 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:20,425 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:20,425 INFO L186 Difference]: Start difference. First operand has 143 places, 128 transitions, 325 flow. Second operand 10 states and 1089 transitions. [2022-07-12 10:28:20,425 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 178 transitions, 667 flow [2022-07-12 10:28:20,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 178 transitions, 642 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-12 10:28:20,433 INFO L242 Difference]: Finished difference. Result has 145 places, 131 transitions, 371 flow [2022-07-12 10:28:20,433 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=371, PETRI_PLACES=145, PETRI_TRANSITIONS=131} [2022-07-12 10:28:20,434 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 9 predicate places. [2022-07-12 10:28:20,434 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 131 transitions, 371 flow [2022-07-12 10:28:20,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 103.7) internal successors, (1037), 10 states have internal predecessors, (1037), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:20,435 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:20,435 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:20,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 10:28:20,436 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:20,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1894093600, now seen corresponding path program 3 times [2022-07-12 10:28:20,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:20,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39736778] [2022-07-12 10:28:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:20,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:20,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:20,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:20,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39736778] [2022-07-12 10:28:20,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39736778] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:20,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:20,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:28:20,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422784028] [2022-07-12 10:28:20,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:20,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:28:20,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:20,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:28:20,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:28:20,561 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:20,562 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 131 transitions, 371 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:20,562 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:20,562 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:20,562 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:21,039 INFO L129 PetriNetUnfolder]: 1951/4749 cut-off events. [2022-07-12 10:28:21,040 INFO L130 PetriNetUnfolder]: For 2248/2590 co-relation queries the response was YES. [2022-07-12 10:28:21,052 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9657 conditions, 4749 events. 1951/4749 cut-off events. For 2248/2590 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 41160 event pairs, 497 based on Foata normal form. 82/4628 useless extension candidates. Maximal degree in co-relation 9642. Up to 986 conditions per place. [2022-07-12 10:28:21,068 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 19 changer transitions 0/177 dead transitions. [2022-07-12 10:28:21,068 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 177 transitions, 636 flow [2022-07-12 10:28:21,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:28:21,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:28:21,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 802 transitions. [2022-07-12 10:28:21,070 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.806841046277666 [2022-07-12 10:28:21,070 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 802 transitions. [2022-07-12 10:28:21,070 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 802 transitions. [2022-07-12 10:28:21,071 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:21,071 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 802 transitions. [2022-07-12 10:28:21,072 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.57142857142857) internal successors, (802), 7 states have internal predecessors, (802), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,073 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,074 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,074 INFO L186 Difference]: Start difference. First operand has 145 places, 131 transitions, 371 flow. Second operand 7 states and 802 transitions. [2022-07-12 10:28:21,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 177 transitions, 636 flow [2022-07-12 10:28:21,080 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 177 transitions, 597 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-07-12 10:28:21,082 INFO L242 Difference]: Finished difference. Result has 141 places, 147 transitions, 440 flow [2022-07-12 10:28:21,082 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=440, PETRI_PLACES=141, PETRI_TRANSITIONS=147} [2022-07-12 10:28:21,082 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 5 predicate places. [2022-07-12 10:28:21,083 INFO L495 AbstractCegarLoop]: Abstraction has has 141 places, 147 transitions, 440 flow [2022-07-12 10:28:21,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,083 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:21,083 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:21,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 10:28:21,084 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:21,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:21,084 INFO L85 PathProgramCache]: Analyzing trace with hash 513937608, now seen corresponding path program 4 times [2022-07-12 10:28:21,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:21,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396062886] [2022-07-12 10:28:21,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:21,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:21,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:21,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:21,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:21,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396062886] [2022-07-12 10:28:21,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396062886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:21,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:21,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:28:21,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176321500] [2022-07-12 10:28:21,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:21,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:28:21,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:21,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:28:21,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:28:21,162 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:21,162 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 141 places, 147 transitions, 440 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:21,163 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:21,163 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:21,576 INFO L129 PetriNetUnfolder]: 1900/4565 cut-off events. [2022-07-12 10:28:21,576 INFO L130 PetriNetUnfolder]: For 2940/3263 co-relation queries the response was YES. [2022-07-12 10:28:21,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 11300 conditions, 4565 events. 1900/4565 cut-off events. For 2940/3263 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 38797 event pairs, 505 based on Foata normal form. 153/4512 useless extension candidates. Maximal degree in co-relation 3466. Up to 949 conditions per place. [2022-07-12 10:28:21,609 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 59 selfloop transitions, 24 changer transitions 0/180 dead transitions. [2022-07-12 10:28:21,609 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 180 transitions, 719 flow [2022-07-12 10:28:21,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:28:21,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:28:21,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 800 transitions. [2022-07-12 10:28:21,611 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8048289738430584 [2022-07-12 10:28:21,611 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 800 transitions. [2022-07-12 10:28:21,611 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 800 transitions. [2022-07-12 10:28:21,612 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:21,612 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 800 transitions. [2022-07-12 10:28:21,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.28571428571429) internal successors, (800), 7 states have internal predecessors, (800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,614 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,615 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,615 INFO L186 Difference]: Start difference. First operand has 141 places, 147 transitions, 440 flow. Second operand 7 states and 800 transitions. [2022-07-12 10:28:21,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 180 transitions, 719 flow [2022-07-12 10:28:21,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 180 transitions, 715 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-07-12 10:28:21,620 INFO L242 Difference]: Finished difference. Result has 147 places, 153 transitions, 537 flow [2022-07-12 10:28:21,620 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=537, PETRI_PLACES=147, PETRI_TRANSITIONS=153} [2022-07-12 10:28:21,621 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 11 predicate places. [2022-07-12 10:28:21,621 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 153 transitions, 537 flow [2022-07-12 10:28:21,621 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,621 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:21,621 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:21,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 10:28:21,622 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:21,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:21,622 INFO L85 PathProgramCache]: Analyzing trace with hash -2001922216, now seen corresponding path program 5 times [2022-07-12 10:28:21,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:21,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568604712] [2022-07-12 10:28:21,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:21,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:21,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:21,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:21,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:21,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568604712] [2022-07-12 10:28:21,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568604712] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:21,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:21,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 10:28:21,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969769369] [2022-07-12 10:28:21,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:21,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:28:21,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:21,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:28:21,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:28:21,702 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:21,703 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 153 transitions, 537 flow. Second operand has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:21,703 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:21,703 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:21,703 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:22,091 INFO L129 PetriNetUnfolder]: 1718/4162 cut-off events. [2022-07-12 10:28:22,092 INFO L130 PetriNetUnfolder]: For 5042/5315 co-relation queries the response was YES. [2022-07-12 10:28:22,105 INFO L84 FinitePrefix]: Finished finitePrefix Result has 12144 conditions, 4162 events. 1718/4162 cut-off events. For 5042/5315 co-relation queries the response was YES. Maximal size of possible extension queue 286. Compared 35119 event pairs, 403 based on Foata normal form. 117/4084 useless extension candidates. Maximal degree in co-relation 6325. Up to 867 conditions per place. [2022-07-12 10:28:22,121 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 59 selfloop transitions, 31 changer transitions 1/188 dead transitions. [2022-07-12 10:28:22,121 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 188 transitions, 872 flow [2022-07-12 10:28:22,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:28:22,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-07-12 10:28:22,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 801 transitions. [2022-07-12 10:28:22,123 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8058350100603622 [2022-07-12 10:28:22,124 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 801 transitions. [2022-07-12 10:28:22,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 801 transitions. [2022-07-12 10:28:22,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:22,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 801 transitions. [2022-07-12 10:28:22,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 114.42857142857143) internal successors, (801), 7 states have internal predecessors, (801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,127 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,127 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 142.0) internal successors, (1136), 8 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,127 INFO L186 Difference]: Start difference. First operand has 147 places, 153 transitions, 537 flow. Second operand 7 states and 801 transitions. [2022-07-12 10:28:22,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 188 transitions, 872 flow [2022-07-12 10:28:22,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 188 transitions, 835 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:28:22,134 INFO L242 Difference]: Finished difference. Result has 151 places, 161 transitions, 653 flow [2022-07-12 10:28:22,134 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=507, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=653, PETRI_PLACES=151, PETRI_TRANSITIONS=161} [2022-07-12 10:28:22,135 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 15 predicate places. [2022-07-12 10:28:22,135 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 161 transitions, 653 flow [2022-07-12 10:28:22,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 107.85714285714286) internal successors, (755), 7 states have internal predecessors, (755), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,135 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:22,136 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:22,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:28:22,136 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:22,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1871223698, now seen corresponding path program 6 times [2022-07-12 10:28:22,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:22,137 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668572799] [2022-07-12 10:28:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:22,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:22,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:22,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:22,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668572799] [2022-07-12 10:28:22,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668572799] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:22,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:22,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:28:22,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200164016] [2022-07-12 10:28:22,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:22,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:28:22,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:22,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:28:22,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:28:22,215 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:22,216 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 161 transitions, 653 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 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) [2022-07-12 10:28:22,216 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:22,216 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:22,216 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:22,579 INFO L129 PetriNetUnfolder]: 1119/3106 cut-off events. [2022-07-12 10:28:22,579 INFO L130 PetriNetUnfolder]: For 5132/5371 co-relation queries the response was YES. [2022-07-12 10:28:22,592 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9347 conditions, 3106 events. 1119/3106 cut-off events. For 5132/5371 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 25542 event pairs, 175 based on Foata normal form. 157/3138 useless extension candidates. Maximal degree in co-relation 3632. Up to 682 conditions per place. [2022-07-12 10:28:22,602 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 69 selfloop transitions, 69 changer transitions 9/240 dead transitions. [2022-07-12 10:28:22,603 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 240 transitions, 1348 flow [2022-07-12 10:28:22,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:28:22,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:28:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 925 transitions. [2022-07-12 10:28:22,605 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8142605633802817 [2022-07-12 10:28:22,605 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 925 transitions. [2022-07-12 10:28:22,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 925 transitions. [2022-07-12 10:28:22,606 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:22,606 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 925 transitions. [2022-07-12 10:28:22,607 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.625) internal successors, (925), 8 states have internal predecessors, (925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,609 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:22,609 INFO L186 Difference]: Start difference. First operand has 151 places, 161 transitions, 653 flow. Second operand 8 states and 925 transitions. [2022-07-12 10:28:22,609 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 240 transitions, 1348 flow [2022-07-12 10:28:22,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 152 places, 240 transitions, 1286 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-07-12 10:28:22,616 INFO L242 Difference]: Finished difference. Result has 154 places, 195 transitions, 1068 flow [2022-07-12 10:28:22,617 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=560, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1068, PETRI_PLACES=154, PETRI_TRANSITIONS=195} [2022-07-12 10:28:22,617 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 18 predicate places. [2022-07-12 10:28:22,617 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 195 transitions, 1068 flow [2022-07-12 10:28:22,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 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) [2022-07-12 10:28:22,618 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:22,618 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:22,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:28:22,619 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:22,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:22,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1095916598, now seen corresponding path program 7 times [2022-07-12 10:28:22,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:22,619 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [943493216] [2022-07-12 10:28:22,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:22,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:22,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:22,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [943493216] [2022-07-12 10:28:22,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [943493216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:22,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:22,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:28:22,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116829896] [2022-07-12 10:28:22,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:22,716 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:28:22,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:22,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:28:22,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:28:22,717 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:22,718 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 195 transitions, 1068 flow. Second operand has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 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) [2022-07-12 10:28:22,718 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:22,718 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:22,718 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:23,111 INFO L129 PetriNetUnfolder]: 992/2779 cut-off events. [2022-07-12 10:28:23,111 INFO L130 PetriNetUnfolder]: For 8114/8729 co-relation queries the response was YES. [2022-07-12 10:28:23,120 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9467 conditions, 2779 events. 992/2779 cut-off events. For 8114/8729 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 22468 event pairs, 150 based on Foata normal form. 300/2967 useless extension candidates. Maximal degree in co-relation 3571. Up to 597 conditions per place. [2022-07-12 10:28:23,129 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 69 selfloop transitions, 72 changer transitions 2/236 dead transitions. [2022-07-12 10:28:23,129 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 236 transitions, 1546 flow [2022-07-12 10:28:23,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:28:23,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-07-12 10:28:23,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 922 transitions. [2022-07-12 10:28:23,131 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8116197183098591 [2022-07-12 10:28:23,131 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 922 transitions. [2022-07-12 10:28:23,132 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 922 transitions. [2022-07-12 10:28:23,132 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:23,132 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 922 transitions. [2022-07-12 10:28:23,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 115.25) internal successors, (922), 8 states have internal predecessors, (922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,135 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,135 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 142.0) internal successors, (1278), 9 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,135 INFO L186 Difference]: Start difference. First operand has 154 places, 195 transitions, 1068 flow. Second operand 8 states and 922 transitions. [2022-07-12 10:28:23,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 236 transitions, 1546 flow [2022-07-12 10:28:23,141 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 236 transitions, 1516 flow, removed 11 selfloop flow, removed 3 redundant places. [2022-07-12 10:28:23,144 INFO L242 Difference]: Finished difference. Result has 159 places, 198 transitions, 1247 flow [2022-07-12 10:28:23,144 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1031, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1247, PETRI_PLACES=159, PETRI_TRANSITIONS=198} [2022-07-12 10:28:23,145 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 23 predicate places. [2022-07-12 10:28:23,145 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 198 transitions, 1247 flow [2022-07-12 10:28:23,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 107.25) internal successors, (858), 8 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) [2022-07-12 10:28:23,145 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:23,145 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:23,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:28:23,146 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash -1036232522, now seen corresponding path program 8 times [2022-07-12 10:28:23,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:23,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364251116] [2022-07-12 10:28:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:23,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:23,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:23,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:23,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:23,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364251116] [2022-07-12 10:28:23,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364251116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:23,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:23,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:28:23,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210816771] [2022-07-12 10:28:23,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:23,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:23,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:23,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:23,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:28:23,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:23,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 198 transitions, 1247 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:23,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:23,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:23,590 INFO L129 PetriNetUnfolder]: 1024/2863 cut-off events. [2022-07-12 10:28:23,590 INFO L130 PetriNetUnfolder]: For 11624/12263 co-relation queries the response was YES. [2022-07-12 10:28:23,602 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10919 conditions, 2863 events. 1024/2863 cut-off events. For 11624/12263 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 23435 event pairs, 130 based on Foata normal form. 302/3048 useless extension candidates. Maximal degree in co-relation 8228. Up to 599 conditions per place. [2022-07-12 10:28:23,612 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 80 selfloop transitions, 91 changer transitions 1/265 dead transitions. [2022-07-12 10:28:23,613 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 265 transitions, 2059 flow [2022-07-12 10:28:23,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:23,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:23,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1149 transitions. [2022-07-12 10:28:23,616 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8091549295774648 [2022-07-12 10:28:23,616 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1149 transitions. [2022-07-12 10:28:23,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1149 transitions. [2022-07-12 10:28:23,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:23,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1149 transitions. [2022-07-12 10:28:23,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.9) internal successors, (1149), 10 states have internal predecessors, (1149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,621 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,621 INFO L186 Difference]: Start difference. First operand has 159 places, 198 transitions, 1247 flow. Second operand 10 states and 1149 transitions. [2022-07-12 10:28:23,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 265 transitions, 2059 flow [2022-07-12 10:28:23,628 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 265 transitions, 1870 flow, removed 4 selfloop flow, removed 7 redundant places. [2022-07-12 10:28:23,634 INFO L242 Difference]: Finished difference. Result has 163 places, 217 transitions, 1559 flow [2022-07-12 10:28:23,634 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1102, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1559, PETRI_PLACES=163, PETRI_TRANSITIONS=217} [2022-07-12 10:28:23,636 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 27 predicate places. [2022-07-12 10:28:23,636 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 217 transitions, 1559 flow [2022-07-12 10:28:23,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,637 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:23,637 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:23,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 10:28:23,638 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:23,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:23,638 INFO L85 PathProgramCache]: Analyzing trace with hash 112718612, now seen corresponding path program 9 times [2022-07-12 10:28:23,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:23,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163231384] [2022-07-12 10:28:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:23,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:23,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:23,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:23,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:23,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163231384] [2022-07-12 10:28:23,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163231384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:23,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:23,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:28:23,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824246208] [2022-07-12 10:28:23,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:23,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:23,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:23,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:23,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:28:23,737 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:23,738 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 217 transitions, 1559 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:23,738 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:23,738 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:23,738 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:24,126 INFO L129 PetriNetUnfolder]: 891/2672 cut-off events. [2022-07-12 10:28:24,126 INFO L130 PetriNetUnfolder]: For 11093/11622 co-relation queries the response was YES. [2022-07-12 10:28:24,133 INFO L84 FinitePrefix]: Finished finitePrefix Result has 10126 conditions, 2672 events. 891/2672 cut-off events. For 11093/11622 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 21976 event pairs, 123 based on Foata normal form. 295/2870 useless extension candidates. Maximal degree in co-relation 3782. Up to 533 conditions per place. [2022-07-12 10:28:24,140 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 77 selfloop transitions, 98 changer transitions 11/279 dead transitions. [2022-07-12 10:28:24,141 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 279 transitions, 2338 flow [2022-07-12 10:28:24,141 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:24,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:24,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1150 transitions. [2022-07-12 10:28:24,143 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8098591549295775 [2022-07-12 10:28:24,143 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1150 transitions. [2022-07-12 10:28:24,143 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1150 transitions. [2022-07-12 10:28:24,144 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:24,144 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1150 transitions. [2022-07-12 10:28:24,145 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 115.0) internal successors, (1150), 10 states have internal predecessors, (1150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,147 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,147 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,148 INFO L186 Difference]: Start difference. First operand has 163 places, 217 transitions, 1559 flow. Second operand 10 states and 1150 transitions. [2022-07-12 10:28:24,148 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 279 transitions, 2338 flow [2022-07-12 10:28:24,155 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 279 transitions, 2204 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:28:24,158 INFO L242 Difference]: Finished difference. Result has 169 places, 224 transitions, 1750 flow [2022-07-12 10:28:24,158 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1389, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1750, PETRI_PLACES=169, PETRI_TRANSITIONS=224} [2022-07-12 10:28:24,159 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 33 predicate places. [2022-07-12 10:28:24,159 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 224 transitions, 1750 flow [2022-07-12 10:28:24,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,159 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:24,160 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:24,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 10:28:24,160 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:24,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 2137251206, now seen corresponding path program 10 times [2022-07-12 10:28:24,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:24,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638684355] [2022-07-12 10:28:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:24,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:24,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:24,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:24,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:24,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638684355] [2022-07-12 10:28:24,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638684355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:24,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:24,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:28:24,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141828004] [2022-07-12 10:28:24,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:24,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:24,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:24,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:24,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:28:24,229 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:24,229 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 224 transitions, 1750 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,230 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:24,230 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:24,230 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:24,526 INFO L129 PetriNetUnfolder]: 646/2148 cut-off events. [2022-07-12 10:28:24,526 INFO L130 PetriNetUnfolder]: For 11286/11833 co-relation queries the response was YES. [2022-07-12 10:28:24,533 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8725 conditions, 2148 events. 646/2148 cut-off events. For 11286/11833 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 17374 event pairs, 79 based on Foata normal form. 286/2368 useless extension candidates. Maximal degree in co-relation 3898. Up to 440 conditions per place. [2022-07-12 10:28:24,539 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 76 selfloop transitions, 108 changer transitions 18/295 dead transitions. [2022-07-12 10:28:24,539 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 295 transitions, 2784 flow [2022-07-12 10:28:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:24,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:24,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1146 transitions. [2022-07-12 10:28:24,542 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8070422535211268 [2022-07-12 10:28:24,542 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1146 transitions. [2022-07-12 10:28:24,542 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1146 transitions. [2022-07-12 10:28:24,542 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:24,542 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1146 transitions. [2022-07-12 10:28:24,544 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 114.6) internal successors, (1146), 10 states have internal predecessors, (1146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,546 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,546 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,546 INFO L186 Difference]: Start difference. First operand has 169 places, 224 transitions, 1750 flow. Second operand 10 states and 1146 transitions. [2022-07-12 10:28:24,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 295 transitions, 2784 flow [2022-07-12 10:28:24,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 295 transitions, 2667 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-07-12 10:28:24,559 INFO L242 Difference]: Finished difference. Result has 175 places, 233 transitions, 2043 flow [2022-07-12 10:28:24,559 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1656, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2043, PETRI_PLACES=175, PETRI_TRANSITIONS=233} [2022-07-12 10:28:24,560 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 39 predicate places. [2022-07-12 10:28:24,560 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 233 transitions, 2043 flow [2022-07-12 10:28:24,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,560 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:24,560 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:24,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 10:28:24,561 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:24,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:24,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1769139122, now seen corresponding path program 11 times [2022-07-12 10:28:24,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:24,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036373932] [2022-07-12 10:28:24,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:24,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:24,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:24,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:24,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:24,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036373932] [2022-07-12 10:28:24,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036373932] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:24,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:24,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:28:24,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238690259] [2022-07-12 10:28:24,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:24,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:24,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:24,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:24,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:28:24,640 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:24,641 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 233 transitions, 2043 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,641 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:24,641 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:24,641 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:24,937 INFO L129 PetriNetUnfolder]: 551/1977 cut-off events. [2022-07-12 10:28:24,938 INFO L130 PetriNetUnfolder]: For 10812/11136 co-relation queries the response was YES. [2022-07-12 10:28:24,945 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8026 conditions, 1977 events. 551/1977 cut-off events. For 10812/11136 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 15648 event pairs, 53 based on Foata normal form. 142/2052 useless extension candidates. Maximal degree in co-relation 4403. Up to 371 conditions per place. [2022-07-12 10:28:24,950 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 58 selfloop transitions, 140 changer transitions 11/302 dead transitions. [2022-07-12 10:28:24,950 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 302 transitions, 3041 flow [2022-07-12 10:28:24,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:24,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:24,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1133 transitions. [2022-07-12 10:28:24,953 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.797887323943662 [2022-07-12 10:28:24,953 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1133 transitions. [2022-07-12 10:28:24,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1133 transitions. [2022-07-12 10:28:24,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:24,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1133 transitions. [2022-07-12 10:28:24,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.3) internal successors, (1133), 10 states have internal predecessors, (1133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,957 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,957 INFO L186 Difference]: Start difference. First operand has 175 places, 233 transitions, 2043 flow. Second operand 10 states and 1133 transitions. [2022-07-12 10:28:24,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 302 transitions, 3041 flow [2022-07-12 10:28:24,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 302 transitions, 2982 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-12 10:28:24,975 INFO L242 Difference]: Finished difference. Result has 181 places, 259 transitions, 2604 flow [2022-07-12 10:28:24,975 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1999, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=115, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2604, PETRI_PLACES=181, PETRI_TRANSITIONS=259} [2022-07-12 10:28:24,976 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 45 predicate places. [2022-07-12 10:28:24,976 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 259 transitions, 2604 flow [2022-07-12 10:28:24,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:24,976 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:24,976 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:24,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:28:24,977 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:24,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:24,977 INFO L85 PathProgramCache]: Analyzing trace with hash -2091271614, now seen corresponding path program 12 times [2022-07-12 10:28:24,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:24,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487130215] [2022-07-12 10:28:24,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:24,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:25,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:25,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:25,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487130215] [2022-07-12 10:28:25,053 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487130215] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:25,053 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:25,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:28:25,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562521306] [2022-07-12 10:28:25,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:25,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:28:25,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:25,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:28:25,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:28:25,055 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:25,056 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 259 transitions, 2604 flow. Second operand has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,056 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:25,056 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:25,056 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:25,364 INFO L129 PetriNetUnfolder]: 513/1876 cut-off events. [2022-07-12 10:28:25,364 INFO L130 PetriNetUnfolder]: For 11935/12186 co-relation queries the response was YES. [2022-07-12 10:28:25,370 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8064 conditions, 1876 events. 513/1876 cut-off events. For 11935/12186 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14871 event pairs, 64 based on Foata normal form. 127/1936 useless extension candidates. Maximal degree in co-relation 3646. Up to 347 conditions per place. [2022-07-12 10:28:25,374 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 61 selfloop transitions, 144 changer transitions 3/301 dead transitions. [2022-07-12 10:28:25,375 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 301 transitions, 3277 flow [2022-07-12 10:28:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:28:25,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-12 10:28:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1136 transitions. [2022-07-12 10:28:25,377 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.8 [2022-07-12 10:28:25,377 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1136 transitions. [2022-07-12 10:28:25,377 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1136 transitions. [2022-07-12 10:28:25,377 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:25,377 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1136 transitions. [2022-07-12 10:28:25,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 113.6) internal successors, (1136), 10 states have internal predecessors, (1136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,381 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,381 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 142.0) internal successors, (1562), 11 states have internal predecessors, (1562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,381 INFO L186 Difference]: Start difference. First operand has 181 places, 259 transitions, 2604 flow. Second operand 10 states and 1136 transitions. [2022-07-12 10:28:25,381 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 301 transitions, 3277 flow [2022-07-12 10:28:25,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 301 transitions, 3132 flow, removed 21 selfloop flow, removed 6 redundant places. [2022-07-12 10:28:25,398 INFO L242 Difference]: Finished difference. Result has 185 places, 263 transitions, 2824 flow [2022-07-12 10:28:25,398 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2470, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2824, PETRI_PLACES=185, PETRI_TRANSITIONS=263} [2022-07-12 10:28:25,398 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 49 predicate places. [2022-07-12 10:28:25,399 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 263 transitions, 2824 flow [2022-07-12 10:28:25,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 106.77777777777777) internal successors, (961), 9 states have internal predecessors, (961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,399 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:25,399 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:25,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 10:28:25,400 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:25,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1642231146, now seen corresponding path program 13 times [2022-07-12 10:28:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:25,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032397207] [2022-07-12 10:28:25,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:25,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:25,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:25,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:25,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032397207] [2022-07-12 10:28:25,477 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032397207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:25,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:25,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:28:25,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559806916] [2022-07-12 10:28:25,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:25,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:28:25,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:25,478 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:28:25,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:28:25,478 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:25,479 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 263 transitions, 2824 flow. Second operand has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,480 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:25,480 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:25,480 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:25,800 INFO L129 PetriNetUnfolder]: 513/1886 cut-off events. [2022-07-12 10:28:25,800 INFO L130 PetriNetUnfolder]: For 13517/13789 co-relation queries the response was YES. [2022-07-12 10:28:25,806 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8409 conditions, 1886 events. 513/1886 cut-off events. For 13517/13789 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 14996 event pairs, 64 based on Foata normal form. 122/1941 useless extension candidates. Maximal degree in co-relation 3700. Up to 334 conditions per place. [2022-07-12 10:28:25,811 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 67 selfloop transitions, 141 changer transitions 8/309 dead transitions. [2022-07-12 10:28:25,811 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 309 transitions, 3526 flow [2022-07-12 10:28:25,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:28:25,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-07-12 10:28:25,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1248 transitions. [2022-07-12 10:28:25,813 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7989756722151088 [2022-07-12 10:28:25,813 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1248 transitions. [2022-07-12 10:28:25,813 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1248 transitions. [2022-07-12 10:28:25,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:25,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1248 transitions. [2022-07-12 10:28:25,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 113.45454545454545) internal successors, (1248), 11 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,817 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,817 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 142.0) internal successors, (1704), 12 states have internal predecessors, (1704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,817 INFO L186 Difference]: Start difference. First operand has 185 places, 263 transitions, 2824 flow. Second operand 11 states and 1248 transitions. [2022-07-12 10:28:25,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 309 transitions, 3526 flow [2022-07-12 10:28:25,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 309 transitions, 3357 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-07-12 10:28:25,837 INFO L242 Difference]: Finished difference. Result has 190 places, 260 transitions, 2886 flow [2022-07-12 10:28:25,837 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2657, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2886, PETRI_PLACES=190, PETRI_TRANSITIONS=260} [2022-07-12 10:28:25,837 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 54 predicate places. [2022-07-12 10:28:25,838 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 260 transitions, 2886 flow [2022-07-12 10:28:25,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 106.4) internal successors, (1064), 10 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,838 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:25,838 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:25,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:28:25,838 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:25,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:25,839 INFO L85 PathProgramCache]: Analyzing trace with hash -1967407136, now seen corresponding path program 14 times [2022-07-12 10:28:25,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:25,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295246135] [2022-07-12 10:28:25,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:25,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:25,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:25,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:25,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:25,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295246135] [2022-07-12 10:28:25,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295246135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:25,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:25,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:28:25,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845777361] [2022-07-12 10:28:25,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:25,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:28:25,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:25,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:28:25,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:28:25,928 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:25,929 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 260 transitions, 2886 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:25,929 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:25,929 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:25,929 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:26,324 INFO L129 PetriNetUnfolder]: 506/1852 cut-off events. [2022-07-12 10:28:26,324 INFO L130 PetriNetUnfolder]: For 14825/15110 co-relation queries the response was YES. [2022-07-12 10:28:26,332 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8619 conditions, 1852 events. 506/1852 cut-off events. For 14825/15110 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 14741 event pairs, 60 based on Foata normal form. 137/1916 useless extension candidates. Maximal degree in co-relation 6672. Up to 329 conditions per place. [2022-07-12 10:28:26,337 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 71 selfloop transitions, 146 changer transitions 10/320 dead transitions. [2022-07-12 10:28:26,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 320 transitions, 3803 flow [2022-07-12 10:28:26,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:28:26,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:28:26,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1571 transitions. [2022-07-12 10:28:26,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.790241448692153 [2022-07-12 10:28:26,340 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1571 transitions. [2022-07-12 10:28:26,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1571 transitions. [2022-07-12 10:28:26,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:26,340 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1571 transitions. [2022-07-12 10:28:26,344 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.21428571428571) internal successors, (1571), 14 states have internal predecessors, (1571), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,346 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,346 INFO L186 Difference]: Start difference. First operand has 190 places, 260 transitions, 2886 flow. Second operand 14 states and 1571 transitions. [2022-07-12 10:28:26,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 320 transitions, 3803 flow [2022-07-12 10:28:26,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 320 transitions, 3639 flow, removed 8 selfloop flow, removed 7 redundant places. [2022-07-12 10:28:26,371 INFO L242 Difference]: Finished difference. Result has 197 places, 265 transitions, 3119 flow [2022-07-12 10:28:26,371 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2749, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=260, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=141, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=3119, PETRI_PLACES=197, PETRI_TRANSITIONS=265} [2022-07-12 10:28:26,372 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 61 predicate places. [2022-07-12 10:28:26,372 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 265 transitions, 3119 flow [2022-07-12 10:28:26,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,373 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:26,373 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:26,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:28:26,373 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:26,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:26,373 INFO L85 PathProgramCache]: Analyzing trace with hash -316378714, now seen corresponding path program 15 times [2022-07-12 10:28:26,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:26,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244526430] [2022-07-12 10:28:26,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:26,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:26,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:26,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:26,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:26,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244526430] [2022-07-12 10:28:26,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244526430] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:26,467 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:26,467 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:28:26,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811003646] [2022-07-12 10:28:26,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:26,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:28:26,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:26,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:28:26,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:28:26,469 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:26,469 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 265 transitions, 3119 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,469 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:26,470 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:26,470 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:26,881 INFO L129 PetriNetUnfolder]: 509/1979 cut-off events. [2022-07-12 10:28:26,881 INFO L130 PetriNetUnfolder]: For 18004/18284 co-relation queries the response was YES. [2022-07-12 10:28:26,889 INFO L84 FinitePrefix]: Finished finitePrefix Result has 9157 conditions, 1979 events. 509/1979 cut-off events. For 18004/18284 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 16379 event pairs, 73 based on Foata normal form. 129/2040 useless extension candidates. Maximal degree in co-relation 4206. Up to 333 conditions per place. [2022-07-12 10:28:26,894 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 62 selfloop transitions, 122 changer transitions 54/331 dead transitions. [2022-07-12 10:28:26,895 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 331 transitions, 4174 flow [2022-07-12 10:28:26,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:28:26,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:28:26,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1574 transitions. [2022-07-12 10:28:26,897 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7917505030181087 [2022-07-12 10:28:26,897 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1574 transitions. [2022-07-12 10:28:26,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1574 transitions. [2022-07-12 10:28:26,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:26,898 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1574 transitions. [2022-07-12 10:28:26,899 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.42857142857143) internal successors, (1574), 14 states have internal predecessors, (1574), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,901 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,901 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,901 INFO L186 Difference]: Start difference. First operand has 197 places, 265 transitions, 3119 flow. Second operand 14 states and 1574 transitions. [2022-07-12 10:28:26,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 331 transitions, 4174 flow [2022-07-12 10:28:26,922 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 331 transitions, 3846 flow, removed 2 selfloop flow, removed 10 redundant places. [2022-07-12 10:28:26,926 INFO L242 Difference]: Finished difference. Result has 202 places, 241 transitions, 2586 flow [2022-07-12 10:28:26,926 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2586, PETRI_PLACES=202, PETRI_TRANSITIONS=241} [2022-07-12 10:28:26,926 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 66 predicate places. [2022-07-12 10:28:26,926 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 241 transitions, 2586 flow [2022-07-12 10:28:26,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:26,927 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:26,927 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:26,927 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:28:26,927 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:26,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:26,928 INFO L85 PathProgramCache]: Analyzing trace with hash 1973674890, now seen corresponding path program 16 times [2022-07-12 10:28:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:26,928 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2075338787] [2022-07-12 10:28:26,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:26,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:27,022 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:27,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:27,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2075338787] [2022-07-12 10:28:27,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2075338787] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:27,024 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:27,024 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:28:27,024 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491862805] [2022-07-12 10:28:27,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:27,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:28:27,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:27,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:28:27,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:28:27,027 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:27,027 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 241 transitions, 2586 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,027 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:27,027 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:27,028 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:27,388 INFO L129 PetriNetUnfolder]: 433/1728 cut-off events. [2022-07-12 10:28:27,389 INFO L130 PetriNetUnfolder]: For 15922/16236 co-relation queries the response was YES. [2022-07-12 10:28:27,395 INFO L84 FinitePrefix]: Finished finitePrefix Result has 8050 conditions, 1728 events. 433/1728 cut-off events. For 15922/16236 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 13808 event pairs, 69 based on Foata normal form. 148/1811 useless extension candidates. Maximal degree in co-relation 4142. Up to 305 conditions per place. [2022-07-12 10:28:27,400 INFO L132 encePairwiseOnDemand]: 130/142 looper letters, 66 selfloop transitions, 122 changer transitions 25/305 dead transitions. [2022-07-12 10:28:27,400 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 305 transitions, 3551 flow [2022-07-12 10:28:27,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:28:27,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:28:27,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1572 transitions. [2022-07-12 10:28:27,419 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7907444668008048 [2022-07-12 10:28:27,419 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1572 transitions. [2022-07-12 10:28:27,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1572 transitions. [2022-07-12 10:28:27,420 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:27,420 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1572 transitions. [2022-07-12 10:28:27,424 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 112.28571428571429) internal successors, (1572), 14 states have internal predecessors, (1572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,426 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,426 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,433 INFO L186 Difference]: Start difference. First operand has 202 places, 241 transitions, 2586 flow. Second operand 14 states and 1572 transitions. [2022-07-12 10:28:27,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 305 transitions, 3551 flow [2022-07-12 10:28:27,457 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 305 transitions, 3235 flow, removed 18 selfloop flow, removed 11 redundant places. [2022-07-12 10:28:27,460 INFO L242 Difference]: Finished difference. Result has 203 places, 239 transitions, 2525 flow [2022-07-12 10:28:27,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=2310, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=111, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2525, PETRI_PLACES=203, PETRI_TRANSITIONS=239} [2022-07-12 10:28:27,461 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 67 predicate places. [2022-07-12 10:28:27,461 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 239 transitions, 2525 flow [2022-07-12 10:28:27,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,461 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-12 10:28:27,462 INFO L200 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:28:27,462 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 10:28:27,462 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-07-12 10:28:27,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:28:27,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1976414672, now seen corresponding path program 17 times [2022-07-12 10:28:27,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:28:27,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729706093] [2022-07-12 10:28:27,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:28:27,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:28:27,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:28:27,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 10:28:27,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:28:27,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729706093] [2022-07-12 10:28:27,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729706093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:28:27,542 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:28:27,542 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:28:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502093983] [2022-07-12 10:28:27,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:28:27,543 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:28:27,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:28:27,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:28:27,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:28:27,545 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 142 [2022-07-12 10:28:27,545 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 239 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,545 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-12 10:28:27,545 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 142 [2022-07-12 10:28:27,546 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-12 10:28:27,710 INFO L129 PetriNetUnfolder]: 65/372 cut-off events. [2022-07-12 10:28:27,710 INFO L130 PetriNetUnfolder]: For 3252/3312 co-relation queries the response was YES. [2022-07-12 10:28:27,711 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2063 conditions, 372 events. 65/372 cut-off events. For 3252/3312 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2075 event pairs, 1 based on Foata normal form. 77/445 useless extension candidates. Maximal degree in co-relation 1663. Up to 65 conditions per place. [2022-07-12 10:28:27,712 INFO L132 encePairwiseOnDemand]: 132/142 looper letters, 0 selfloop transitions, 0 changer transitions 165/165 dead transitions. [2022-07-12 10:28:27,712 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 165 transitions, 1702 flow [2022-07-12 10:28:27,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:28:27,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-12 10:28:27,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1514 transitions. [2022-07-12 10:28:27,716 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.761569416498994 [2022-07-12 10:28:27,716 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1514 transitions. [2022-07-12 10:28:27,716 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1514 transitions. [2022-07-12 10:28:27,717 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-12 10:28:27,717 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1514 transitions. [2022-07-12 10:28:27,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 108.14285714285714) internal successors, (1514), 14 states have internal predecessors, (1514), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,723 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,723 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 142.0) internal successors, (2130), 15 states have internal predecessors, (2130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,723 INFO L186 Difference]: Start difference. First operand has 203 places, 239 transitions, 2525 flow. Second operand 14 states and 1514 transitions. [2022-07-12 10:28:27,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 165 transitions, 1702 flow [2022-07-12 10:28:27,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 165 transitions, 1540 flow, removed 16 selfloop flow, removed 15 redundant places. [2022-07-12 10:28:27,733 INFO L242 Difference]: Finished difference. Result has 172 places, 0 transitions, 0 flow [2022-07-12 10:28:27,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=142, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=172, PETRI_TRANSITIONS=0} [2022-07-12 10:28:27,734 INFO L279 CegarLoopForPetriNet]: 136 programPoint places, 36 predicate places. [2022-07-12 10:28:27,734 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 0 transitions, 0 flow [2022-07-12 10:28:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.0909090909091) internal successors, (1167), 11 states have internal predecessors, (1167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-12 10:28:27,736 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2022-07-12 10:28:27,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2022-07-12 10:28:27,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2022-07-12 10:28:27,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2022-07-12 10:28:27,737 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2022-07-12 10:28:27,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:28:27,737 INFO L356 BasicCegarLoop]: Path program histogram: [17] [2022-07-12 10:28:27,740 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-12 10:28:27,740 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 10:28:27,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 10:28:27 BasicIcfg [2022-07-12 10:28:27,743 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 10:28:27,743 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 10:28:27,743 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 10:28:27,744 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 10:28:27,744 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:28:17" (3/4) ... [2022-07-12 10:28:27,746 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-12 10:28:27,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-12 10:28:27,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-12 10:28:27,749 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-07-12 10:28:27,750 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread4 [2022-07-12 10:28:27,752 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 23 nodes and edges [2022-07-12 10:28:27,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-12 10:28:27,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-12 10:28:27,753 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-12 10:28:27,772 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 10:28:27,773 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 10:28:27,773 INFO L158 Benchmark]: Toolchain (without parser) took 10873.49ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 89.5MB in the beginning and 1.0GB in the end (delta: -927.2MB). Peak memory consumption was 466.3MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,773 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 117.4MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 10:28:27,773 INFO L158 Benchmark]: CACSL2BoogieTranslator took 238.85ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 90.6MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,774 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.77ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 88.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,774 INFO L158 Benchmark]: Boogie Preprocessor took 15.18ms. Allocated memory is still 117.4MB. Free memory was 88.3MB in the beginning and 86.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,774 INFO L158 Benchmark]: RCFGBuilder took 402.56ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 67.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,774 INFO L158 Benchmark]: TraceAbstraction took 10155.64ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 67.3MB in the beginning and 1.0GB in the end (delta: -952.5MB). Peak memory consumption was 440.9MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,775 INFO L158 Benchmark]: Witness Printer took 29.45ms. Allocated memory is still 1.5GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-12 10:28:27,776 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 117.4MB. Free memory was 74.1MB in the beginning and 74.0MB in the end (delta: 49.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 238.85ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 90.6MB in the end (delta: -1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.77ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 88.3MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.18ms. Allocated memory is still 117.4MB. Free memory was 88.3MB in the beginning and 86.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 402.56ms. Allocated memory is still 117.4MB. Free memory was 86.9MB in the beginning and 67.8MB in the end (delta: 19.1MB). Peak memory consumption was 18.9MB. Max. memory is 16.1GB. * TraceAbstraction took 10155.64ms. Allocated memory was 117.4MB in the beginning and 1.5GB in the end (delta: 1.4GB). Free memory was 67.3MB in the beginning and 1.0GB in the end (delta: -952.5MB). Peak memory consumption was 440.9MB. Max. memory is 16.1GB. * Witness Printer took 29.45ms. Allocated memory is still 1.5GB. Free memory was 1.0GB in the beginning and 1.0GB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 146]: 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 9 procedures, 174 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: 10.0s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 17, EmptinessCheckTime: 0.0s, AutomataDifference: 7.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1217 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1217 mSDsluCounter, 761 SdHoareTripleChecker+Invalid, 1.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1580 mSDsCounter, 591 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4115 IncrementalHoareTripleChecker+Invalid, 4706 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 591 mSolverCounterUnsat, 234 mSDtfsCounter, 4115 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 246 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 267 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3119occurred in iteration=14, InterpolantAutomatonStates: 175, 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, 1.3s InterpolantComputationTime, 2057 NumberOfCodeBlocks, 2057 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 2040 ConstructedInterpolants, 0 QuantifiedInterpolants, 5408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-07-12 10:28:27,798 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... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE