./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/weaver/security.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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/security.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 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:43:45,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:43:45,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:43:45,786 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:43:45,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:43:45,787 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:43:45,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:43:45,799 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:43:45,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:43:45,800 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:43:45,801 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:43:45,802 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:43:45,802 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:43:45,802 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:43:45,803 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:43:45,804 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:43:45,804 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:43:45,811 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:43:45,813 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:43:45,816 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:43:45,819 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:43:45,820 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:43:45,821 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:43:45,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:43:45,822 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:43:45,824 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:43:45,825 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:43:45,825 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:43:45,826 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:43:45,827 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:43:45,827 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:43:45,828 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:43:45,828 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:43:45,829 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:43:45,830 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:43:45,830 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:43:45,830 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:43:45,831 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:43:45,831 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:43:45,832 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:43:45,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:43:45,833 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:43:45,834 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 21:43:45,850 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:43:45,852 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:43:45,852 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:43:45,852 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:43:45,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:43:45,853 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:43:45,853 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:43:45,854 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:43:45,854 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:43:45,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:43:45,855 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:43:45,856 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 21:43:45,856 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:43:45,856 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:43:45,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:43:45,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:43:45,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:43:45,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:43:45,857 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:43:45,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:43:45,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:43:45,858 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:43:45,858 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:43:45,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:43:45,859 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:43:45,859 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:43:45,859 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:43:45,859 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 [2022-07-19 21:43:46,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:43:46,068 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:43:46,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:43:46,070 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:43:46,079 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:43:46,080 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/security.wvr.c [2022-07-19 21:43:46,123 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceab78928/a62f4188dd6e4186a18600e84356e743/FLAG5ffefa804 [2022-07-19 21:43:46,484 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:43:46,485 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/security.wvr.c [2022-07-19 21:43:46,491 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceab78928/a62f4188dd6e4186a18600e84356e743/FLAG5ffefa804 [2022-07-19 21:43:46,500 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ceab78928/a62f4188dd6e4186a18600e84356e743 [2022-07-19 21:43:46,501 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:43:46,502 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:43:46,504 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:43:46,504 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:43:46,510 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:43:46,511 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62dab662 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46, skipping insertion in model container [2022-07-19 21:43:46,513 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:43:46,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:43:46,655 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/security.wvr.c[1931,1944] [2022-07-19 21:43:46,657 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:43:46,663 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:43:46,687 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/security.wvr.c[1931,1944] [2022-07-19 21:43:46,693 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:43:46,702 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:43:46,702 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46 WrapperNode [2022-07-19 21:43:46,702 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:43:46,703 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:43:46,703 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:43:46,703 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:43:46,709 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,716 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,727 INFO L137 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-19 21:43:46,727 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:43:46,727 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:43:46,728 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:43:46,728 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:43:46,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,738 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:43:46,741 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:43:46,741 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:43:46,741 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:43:46,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (1/1) ... [2022-07-19 21:43:46,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:43:46,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:43:46,764 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) [2022-07-19 21:43:46,765 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 [2022-07-19 21:43:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:43:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-19 21:43:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-19 21:43:46,786 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-19 21:43:46,786 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-19 21:43:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:43:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:43:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:43:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:43:46,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:43:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:43:46,787 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:43:46,788 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-19 21:43:46,839 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:43:46,840 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:43:46,979 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:43:46,989 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:43:46,989 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:43:46,990 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:43:46 BoogieIcfgContainer [2022-07-19 21:43:46,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:43:46,991 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:43:46,991 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:43:46,993 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:43:46,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:43:46" (1/3) ... [2022-07-19 21:43:46,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54198f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:43:46, skipping insertion in model container [2022-07-19 21:43:46,994 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:43:46" (2/3) ... [2022-07-19 21:43:46,994 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e54198f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:43:46, skipping insertion in model container [2022-07-19 21:43:46,995 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:43:46" (3/3) ... [2022-07-19 21:43:46,997 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2022-07-19 21:43:47,000 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-19 21:43:47,011 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:43:47,011 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:43:47,011 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-19 21:43:47,042 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-19 21:43:47,064 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 81 transitions, 178 flow [2022-07-19 21:43:47,092 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2022-07-19 21:43:47,092 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:43:47,094 INFO L84 FinitePrefix]: Finished finitePrefix Result has 88 conditions, 79 events. 3/79 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 44. Up to 2 conditions per place. [2022-07-19 21:43:47,095 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 81 transitions, 178 flow [2022-07-19 21:43:47,097 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2022-07-19 21:43:47,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:43:47,110 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@6ce4bd04, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6308d0d2 [2022-07-19 21:43:47,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-19 21:43:47,126 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2022-07-19 21:43:47,126 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-19 21:43:47,126 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:47,127 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] [2022-07-19 21:43:47,127 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:47,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:47,130 INFO L85 PathProgramCache]: Analyzing trace with hash 1803071327, now seen corresponding path program 1 times [2022-07-19 21:43:47,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:47,136 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723545375] [2022-07-19 21:43:47,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:47,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:47,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:47,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:47,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:47,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723545375] [2022-07-19 21:43:47,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723545375] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:47,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:47,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:47,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981354741] [2022-07-19 21:43:47,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:47,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:47,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:47,602 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:47,605 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 70 transitions, 152 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:47,607 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:47,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:47,608 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:47,953 INFO L129 PetriNetUnfolder]: 32/219 cut-off events. [2022-07-19 21:43:47,953 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2022-07-19 21:43:47,955 INFO L84 FinitePrefix]: Finished finitePrefix Result has 356 conditions, 219 events. 32/219 cut-off events. For 57/60 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 902 event pairs, 11 based on Foata normal form. 5/213 useless extension candidates. Maximal degree in co-relation 170. Up to 47 conditions per place. [2022-07-19 21:43:47,957 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 34 selfloop transitions, 2 changer transitions 24/106 dead transitions. [2022-07-19 21:43:47,957 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 377 flow [2022-07-19 21:43:47,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:43:47,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:43:47,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 906 transitions. [2022-07-19 21:43:47,974 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.745679012345679 [2022-07-19 21:43:47,975 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 906 transitions. [2022-07-19 21:43:47,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 906 transitions. [2022-07-19 21:43:47,978 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:47,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 906 transitions. [2022-07-19 21:43:47,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 60.4) internal successors, (906), 15 states have internal predecessors, (906), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:47,990 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:47,991 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:47,992 INFO L186 Difference]: Start difference. First operand has 74 places, 70 transitions, 152 flow. Second operand 15 states and 906 transitions. [2022-07-19 21:43:47,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 377 flow [2022-07-19 21:43:47,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 347 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-19 21:43:48,001 INFO L242 Difference]: Finished difference. Result has 95 places, 69 transitions, 175 flow [2022-07-19 21:43:48,002 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=142, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=175, PETRI_PLACES=95, PETRI_TRANSITIONS=69} [2022-07-19 21:43:48,006 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-07-19 21:43:48,006 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 175 flow [2022-07-19 21:43:48,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,007 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:48,007 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] [2022-07-19 21:43:48,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:43:48,008 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:48,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:48,009 INFO L85 PathProgramCache]: Analyzing trace with hash -2123246751, now seen corresponding path program 2 times [2022-07-19 21:43:48,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:48,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403941095] [2022-07-19 21:43:48,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:48,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:48,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:48,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:48,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403941095] [2022-07-19 21:43:48,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403941095] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:48,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:48,184 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:48,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661910825] [2022-07-19 21:43:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:48,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:48,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:48,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:48,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:48,190 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:48,192 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 69 transitions, 175 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,192 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:48,192 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:48,192 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:48,491 INFO L129 PetriNetUnfolder]: 28/247 cut-off events. [2022-07-19 21:43:48,495 INFO L130 PetriNetUnfolder]: For 136/137 co-relation queries the response was YES. [2022-07-19 21:43:48,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 497 conditions, 247 events. 28/247 cut-off events. For 136/137 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1140 event pairs, 11 based on Foata normal form. 2/240 useless extension candidates. Maximal degree in co-relation 459. Up to 47 conditions per place. [2022-07-19 21:43:48,499 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 49 selfloop transitions, 7 changer transitions 12/114 dead transitions. [2022-07-19 21:43:48,499 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 513 flow [2022-07-19 21:43:48,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:43:48,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:43:48,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 854 transitions. [2022-07-19 21:43:48,503 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-07-19 21:43:48,503 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 854 transitions. [2022-07-19 21:43:48,503 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 854 transitions. [2022-07-19 21:43:48,505 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:48,505 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 854 transitions. [2022-07-19 21:43:48,506 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 61.0) internal successors, (854), 14 states have internal predecessors, (854), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,509 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,510 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,510 INFO L186 Difference]: Start difference. First operand has 95 places, 69 transitions, 175 flow. Second operand 14 states and 854 transitions. [2022-07-19 21:43:48,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 513 flow [2022-07-19 21:43:48,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 420 flow, removed 46 selfloop flow, removed 10 redundant places. [2022-07-19 21:43:48,516 INFO L242 Difference]: Finished difference. Result has 98 places, 75 transitions, 225 flow [2022-07-19 21:43:48,517 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=225, PETRI_PLACES=98, PETRI_TRANSITIONS=75} [2022-07-19 21:43:48,517 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2022-07-19 21:43:48,518 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 225 flow [2022-07-19 21:43:48,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,518 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:48,518 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] [2022-07-19 21:43:48,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:43:48,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:48,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash 1598753897, now seen corresponding path program 3 times [2022-07-19 21:43:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:48,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971857238] [2022-07-19 21:43:48,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:48,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:48,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:48,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:48,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:48,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971857238] [2022-07-19 21:43:48,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971857238] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:48,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:48,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:48,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882388519] [2022-07-19 21:43:48,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:48,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:48,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:48,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:48,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:48,651 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:48,652 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 75 transitions, 225 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,652 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:48,652 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:48,652 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:48,800 INFO L129 PetriNetUnfolder]: 27/233 cut-off events. [2022-07-19 21:43:48,800 INFO L130 PetriNetUnfolder]: For 192/193 co-relation queries the response was YES. [2022-07-19 21:43:48,802 INFO L84 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 233 events. 27/233 cut-off events. For 192/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1054 event pairs, 4 based on Foata normal form. 1/225 useless extension candidates. Maximal degree in co-relation 467. Up to 40 conditions per place. [2022-07-19 21:43:48,803 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 32 selfloop transitions, 10 changer transitions 8/96 dead transitions. [2022-07-19 21:43:48,803 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 433 flow [2022-07-19 21:43:48,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:48,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:48,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 545 transitions. [2022-07-19 21:43:48,805 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.747599451303155 [2022-07-19 21:43:48,805 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 545 transitions. [2022-07-19 21:43:48,805 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 545 transitions. [2022-07-19 21:43:48,805 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:48,806 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 545 transitions. [2022-07-19 21:43:48,806 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.55555555555556) internal successors, (545), 9 states have internal predecessors, (545), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,808 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,809 INFO L186 Difference]: Start difference. First operand has 98 places, 75 transitions, 225 flow. Second operand 9 states and 545 transitions. [2022-07-19 21:43:48,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 433 flow [2022-07-19 21:43:48,813 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 413 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-07-19 21:43:48,814 INFO L242 Difference]: Finished difference. Result has 99 places, 75 transitions, 246 flow [2022-07-19 21:43:48,815 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=213, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=246, PETRI_PLACES=99, PETRI_TRANSITIONS=75} [2022-07-19 21:43:48,816 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-07-19 21:43:48,817 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 246 flow [2022-07-19 21:43:48,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,817 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:48,817 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] [2022-07-19 21:43:48,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:43:48,818 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:48,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:48,818 INFO L85 PathProgramCache]: Analyzing trace with hash 606748351, now seen corresponding path program 4 times [2022-07-19 21:43:48,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:48,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132181711] [2022-07-19 21:43:48,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:48,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:48,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:48,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:48,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132181711] [2022-07-19 21:43:48,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132181711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:48,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:48,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:48,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024465561] [2022-07-19 21:43:48,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:48,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:48,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:48,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:48,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:48,948 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:48,948 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 75 transitions, 246 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:48,948 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:48,949 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:48,949 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:49,076 INFO L129 PetriNetUnfolder]: 27/245 cut-off events. [2022-07-19 21:43:49,077 INFO L130 PetriNetUnfolder]: For 333/337 co-relation queries the response was YES. [2022-07-19 21:43:49,077 INFO L84 FinitePrefix]: Finished finitePrefix Result has 553 conditions, 245 events. 27/245 cut-off events. For 333/337 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1136 event pairs, 16 based on Foata normal form. 4/238 useless extension candidates. Maximal degree in co-relation 516. Up to 47 conditions per place. [2022-07-19 21:43:49,078 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 42 selfloop transitions, 3 changer transitions 9/100 dead transitions. [2022-07-19 21:43:49,078 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 100 transitions, 469 flow [2022-07-19 21:43:49,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:49,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:49,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2022-07-19 21:43:49,080 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2022-07-19 21:43:49,080 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2022-07-19 21:43:49,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2022-07-19 21:43:49,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:49,081 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2022-07-19 21:43:49,081 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.0) internal successors, (558), 9 states have internal predecessors, (558), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,082 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,083 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,083 INFO L186 Difference]: Start difference. First operand has 99 places, 75 transitions, 246 flow. Second operand 9 states and 558 transitions. [2022-07-19 21:43:49,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 100 transitions, 469 flow [2022-07-19 21:43:49,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 419 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-19 21:43:49,086 INFO L242 Difference]: Finished difference. Result has 102 places, 76 transitions, 252 flow [2022-07-19 21:43:49,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=221, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=252, PETRI_PLACES=102, PETRI_TRANSITIONS=76} [2022-07-19 21:43:49,087 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2022-07-19 21:43:49,087 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 76 transitions, 252 flow [2022-07-19 21:43:49,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:49,087 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] [2022-07-19 21:43:49,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:43:49,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:49,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 39404075, now seen corresponding path program 5 times [2022-07-19 21:43:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:49,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2076339608] [2022-07-19 21:43:49,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:49,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:49,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:49,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2076339608] [2022-07-19 21:43:49,197 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2076339608] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:49,197 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:49,197 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:49,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766357665] [2022-07-19 21:43:49,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:49,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:49,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:49,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:49,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:49,198 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:49,199 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 76 transitions, 252 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,199 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:49,199 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:49,199 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:49,356 INFO L129 PetriNetUnfolder]: 25/259 cut-off events. [2022-07-19 21:43:49,356 INFO L130 PetriNetUnfolder]: For 308/310 co-relation queries the response was YES. [2022-07-19 21:43:49,357 INFO L84 FinitePrefix]: Finished finitePrefix Result has 578 conditions, 259 events. 25/259 cut-off events. For 308/310 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1277 event pairs, 6 based on Foata normal form. 1/250 useless extension candidates. Maximal degree in co-relation 534. Up to 63 conditions per place. [2022-07-19 21:43:49,357 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 9 changer transitions 8/101 dead transitions. [2022-07-19 21:43:49,357 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 504 flow [2022-07-19 21:43:49,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:49,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:49,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-07-19 21:43:49,359 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-07-19 21:43:49,359 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-07-19 21:43:49,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-07-19 21:43:49,360 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:49,360 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-07-19 21:43:49,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 61.0) internal successors, (549), 9 states have internal predecessors, (549), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,363 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,363 INFO L186 Difference]: Start difference. First operand has 102 places, 76 transitions, 252 flow. Second operand 9 states and 549 transitions. [2022-07-19 21:43:49,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 504 flow [2022-07-19 21:43:49,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 475 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-07-19 21:43:49,366 INFO L242 Difference]: Finished difference. Result has 106 places, 78 transitions, 299 flow [2022-07-19 21:43:49,366 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=299, PETRI_PLACES=106, PETRI_TRANSITIONS=78} [2022-07-19 21:43:49,368 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2022-07-19 21:43:49,368 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 299 flow [2022-07-19 21:43:49,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,368 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:49,369 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] [2022-07-19 21:43:49,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:43:49,369 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:49,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:49,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1222135401, now seen corresponding path program 6 times [2022-07-19 21:43:49,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:49,370 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142847757] [2022-07-19 21:43:49,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:49,371 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:49,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:49,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:49,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:49,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142847757] [2022-07-19 21:43:49,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142847757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:49,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:49,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:49,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935216708] [2022-07-19 21:43:49,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:49,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:49,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:49,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:49,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:49,465 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:49,465 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 78 transitions, 299 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,465 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:49,465 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:49,465 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:49,619 INFO L129 PetriNetUnfolder]: 24/247 cut-off events. [2022-07-19 21:43:49,619 INFO L130 PetriNetUnfolder]: For 460/465 co-relation queries the response was YES. [2022-07-19 21:43:49,620 INFO L84 FinitePrefix]: Finished finitePrefix Result has 582 conditions, 247 events. 24/247 cut-off events. For 460/465 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1182 event pairs, 16 based on Foata normal form. 3/241 useless extension candidates. Maximal degree in co-relation 546. Up to 47 conditions per place. [2022-07-19 21:43:49,620 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 31 selfloop transitions, 2 changer transitions 25/104 dead transitions. [2022-07-19 21:43:49,621 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 538 flow [2022-07-19 21:43:49,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:43:49,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:43:49,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 842 transitions. [2022-07-19 21:43:49,623 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7425044091710759 [2022-07-19 21:43:49,623 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 842 transitions. [2022-07-19 21:43:49,623 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 842 transitions. [2022-07-19 21:43:49,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:49,623 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 842 transitions. [2022-07-19 21:43:49,625 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 60.142857142857146) internal successors, (842), 14 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,626 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,627 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,627 INFO L186 Difference]: Start difference. First operand has 106 places, 78 transitions, 299 flow. Second operand 14 states and 842 transitions. [2022-07-19 21:43:49,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 538 flow [2022-07-19 21:43:49,629 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 502 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-19 21:43:49,630 INFO L242 Difference]: Finished difference. Result has 118 places, 71 transitions, 228 flow [2022-07-19 21:43:49,630 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=278, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=228, PETRI_PLACES=118, PETRI_TRANSITIONS=71} [2022-07-19 21:43:49,632 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 44 predicate places. [2022-07-19 21:43:49,632 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 71 transitions, 228 flow [2022-07-19 21:43:49,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,632 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:49,633 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] [2022-07-19 21:43:49,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:43:49,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:49,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:49,633 INFO L85 PathProgramCache]: Analyzing trace with hash 2131364533, now seen corresponding path program 7 times [2022-07-19 21:43:49,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:49,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824254093] [2022-07-19 21:43:49,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:49,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:49,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:49,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:49,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:49,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824254093] [2022-07-19 21:43:49,742 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824254093] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:49,742 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:49,742 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:49,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049088425] [2022-07-19 21:43:49,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:49,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:49,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:49,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:49,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:49,744 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:49,744 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 71 transitions, 228 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,744 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:49,744 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:49,744 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:49,855 INFO L129 PetriNetUnfolder]: 20/214 cut-off events. [2022-07-19 21:43:49,856 INFO L130 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2022-07-19 21:43:49,856 INFO L84 FinitePrefix]: Finished finitePrefix Result has 512 conditions, 214 events. 20/214 cut-off events. For 353/353 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 911 event pairs, 4 based on Foata normal form. 1/208 useless extension candidates. Maximal degree in co-relation 487. Up to 30 conditions per place. [2022-07-19 21:43:49,857 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 45 selfloop transitions, 5 changer transitions 8/104 dead transitions. [2022-07-19 21:43:49,857 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 104 transitions, 532 flow [2022-07-19 21:43:49,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:49,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2022-07-19 21:43:49,858 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7681755829903978 [2022-07-19 21:43:49,858 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2022-07-19 21:43:49,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2022-07-19 21:43:49,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:49,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2022-07-19 21:43:49,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 62.22222222222222) internal successors, (560), 9 states have internal predecessors, (560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,860 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,861 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,861 INFO L186 Difference]: Start difference. First operand has 118 places, 71 transitions, 228 flow. Second operand 9 states and 560 transitions. [2022-07-19 21:43:49,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 104 transitions, 532 flow [2022-07-19 21:43:49,862 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 429 flow, removed 50 selfloop flow, removed 14 redundant places. [2022-07-19 21:43:49,863 INFO L242 Difference]: Finished difference. Result has 100 places, 73 transitions, 240 flow [2022-07-19 21:43:49,863 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=86, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=240, PETRI_PLACES=100, PETRI_TRANSITIONS=73} [2022-07-19 21:43:49,864 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-07-19 21:43:49,864 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 240 flow [2022-07-19 21:43:49,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,864 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:49,864 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] [2022-07-19 21:43:49,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 21:43:49,865 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:49,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:49,865 INFO L85 PathProgramCache]: Analyzing trace with hash -702033037, now seen corresponding path program 8 times [2022-07-19 21:43:49,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:49,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106023685] [2022-07-19 21:43:49,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:49,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:49,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:49,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:49,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:49,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106023685] [2022-07-19 21:43:49,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2106023685] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:49,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:49,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:49,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836603674] [2022-07-19 21:43:49,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:49,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:49,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:49,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:49,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:49,966 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:49,967 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 73 transitions, 240 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:49,967 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:49,967 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:49,967 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:50,078 INFO L129 PetriNetUnfolder]: 17/185 cut-off events. [2022-07-19 21:43:50,078 INFO L130 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2022-07-19 21:43:50,079 INFO L84 FinitePrefix]: Finished finitePrefix Result has 404 conditions, 185 events. 17/185 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 673 event pairs, 4 based on Foata normal form. 1/181 useless extension candidates. Maximal degree in co-relation 386. Up to 30 conditions per place. [2022-07-19 21:43:50,079 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 31 selfloop transitions, 5 changer transitions 9/91 dead transitions. [2022-07-19 21:43:50,079 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 402 flow [2022-07-19 21:43:50,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:50,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:50,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2022-07-19 21:43:50,081 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7503429355281207 [2022-07-19 21:43:50,081 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2022-07-19 21:43:50,081 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2022-07-19 21:43:50,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:50,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2022-07-19 21:43:50,082 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.77777777777778) internal successors, (547), 9 states have internal predecessors, (547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,084 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,084 INFO L186 Difference]: Start difference. First operand has 100 places, 73 transitions, 240 flow. Second operand 9 states and 547 transitions. [2022-07-19 21:43:50,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 91 transitions, 402 flow [2022-07-19 21:43:50,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 91 transitions, 377 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-19 21:43:50,086 INFO L242 Difference]: Finished difference. Result has 105 places, 72 transitions, 237 flow [2022-07-19 21:43:50,086 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=225, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=105, PETRI_TRANSITIONS=72} [2022-07-19 21:43:50,086 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2022-07-19 21:43:50,087 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 237 flow [2022-07-19 21:43:50,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,087 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:50,087 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] [2022-07-19 21:43:50,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:43:50,088 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:50,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:50,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1379725623, now seen corresponding path program 9 times [2022-07-19 21:43:50,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:50,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488198253] [2022-07-19 21:43:50,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:50,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:50,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:50,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:50,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488198253] [2022-07-19 21:43:50,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488198253] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:50,180 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:50,180 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:50,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857634445] [2022-07-19 21:43:50,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:50,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:50,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:50,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:50,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:50,182 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:50,182 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 72 transitions, 237 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,182 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:50,182 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:50,182 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:50,312 INFO L129 PetriNetUnfolder]: 15/160 cut-off events. [2022-07-19 21:43:50,312 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-07-19 21:43:50,312 INFO L84 FinitePrefix]: Finished finitePrefix Result has 355 conditions, 160 events. 15/160 cut-off events. For 174/174 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 514 event pairs, 2 based on Foata normal form. 1/155 useless extension candidates. Maximal degree in co-relation 336. Up to 30 conditions per place. [2022-07-19 21:43:50,313 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 31 selfloop transitions, 2 changer transitions 11/90 dead transitions. [2022-07-19 21:43:50,313 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 90 transitions, 406 flow [2022-07-19 21:43:50,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:50,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-07-19 21:43:50,314 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-07-19 21:43:50,314 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-07-19 21:43:50,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-07-19 21:43:50,315 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:50,315 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-07-19 21:43:50,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.888888888888886) internal successors, (548), 9 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,317 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,317 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,317 INFO L186 Difference]: Start difference. First operand has 105 places, 72 transitions, 237 flow. Second operand 9 states and 548 transitions. [2022-07-19 21:43:50,317 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 90 transitions, 406 flow [2022-07-19 21:43:50,318 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 355 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-07-19 21:43:50,319 INFO L242 Difference]: Finished difference. Result has 101 places, 69 transitions, 189 flow [2022-07-19 21:43:50,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=205, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=189, PETRI_PLACES=101, PETRI_TRANSITIONS=69} [2022-07-19 21:43:50,320 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-07-19 21:43:50,320 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 189 flow [2022-07-19 21:43:50,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,320 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:50,320 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] [2022-07-19 21:43:50,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:43:50,321 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:50,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:50,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1892410847, now seen corresponding path program 10 times [2022-07-19 21:43:50,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:50,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328571637] [2022-07-19 21:43:50,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:50,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:50,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:50,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:50,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:50,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328571637] [2022-07-19 21:43:50,407 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328571637] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:50,408 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:50,408 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:43:50,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634401082] [2022-07-19 21:43:50,409 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:50,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:43:50,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:50,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:43:50,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:43:50,413 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-19 21:43:50,413 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 69 transitions, 189 flow. Second operand has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,414 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:50,414 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-19 21:43:50,414 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:50,544 INFO L129 PetriNetUnfolder]: 15/134 cut-off events. [2022-07-19 21:43:50,544 INFO L130 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-07-19 21:43:50,544 INFO L84 FinitePrefix]: Finished finitePrefix Result has 278 conditions, 134 events. 15/134 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 352 event pairs, 2 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 263. Up to 23 conditions per place. [2022-07-19 21:43:50,545 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 24 selfloop transitions, 3 changer transitions 10/83 dead transitions. [2022-07-19 21:43:50,545 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 83 transitions, 318 flow [2022-07-19 21:43:50,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:43:50,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-19 21:43:50,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2022-07-19 21:43:50,548 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7434842249657064 [2022-07-19 21:43:50,548 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2022-07-19 21:43:50,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2022-07-19 21:43:50,549 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:50,549 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2022-07-19 21:43:50,550 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 60.22222222222222) internal successors, (542), 9 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,552 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 81.0) internal successors, (810), 10 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,552 INFO L186 Difference]: Start difference. First operand has 101 places, 69 transitions, 189 flow. Second operand 9 states and 542 transitions. [2022-07-19 21:43:50,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 83 transitions, 318 flow [2022-07-19 21:43:50,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 286 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-07-19 21:43:50,554 INFO L242 Difference]: Finished difference. Result has 95 places, 67 transitions, 160 flow [2022-07-19 21:43:50,555 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=160, PETRI_PLACES=95, PETRI_TRANSITIONS=67} [2022-07-19 21:43:50,555 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-07-19 21:43:50,556 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 160 flow [2022-07-19 21:43:50,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 58.22222222222222) internal successors, (524), 9 states have internal predecessors, (524), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,556 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:50,556 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] [2022-07-19 21:43:50,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:43:50,556 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:50,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:50,557 INFO L85 PathProgramCache]: Analyzing trace with hash 499925854, now seen corresponding path program 1 times [2022-07-19 21:43:50,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:50,559 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248244293] [2022-07-19 21:43:50,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:50,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:50,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:50,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:50,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:50,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248244293] [2022-07-19 21:43:50,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248244293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:50,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:50,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:50,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49435170] [2022-07-19 21:43:50,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:50,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:50,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:50,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:50,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:50,678 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:50,679 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 67 transitions, 160 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,679 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:50,679 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:50,679 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:50,916 INFO L129 PetriNetUnfolder]: 23/163 cut-off events. [2022-07-19 21:43:50,916 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-07-19 21:43:50,916 INFO L84 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 163 events. 23/163 cut-off events. For 68/68 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 504 event pairs, 0 based on Foata normal form. 2/161 useless extension candidates. Maximal degree in co-relation 318. Up to 19 conditions per place. [2022-07-19 21:43:50,917 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 32 selfloop transitions, 3 changer transitions 20/99 dead transitions. [2022-07-19 21:43:50,917 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 412 flow [2022-07-19 21:43:50,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:43:50,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-19 21:43:50,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 813 transitions. [2022-07-19 21:43:50,918 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.716931216931217 [2022-07-19 21:43:50,918 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 813 transitions. [2022-07-19 21:43:50,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 813 transitions. [2022-07-19 21:43:50,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:50,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 813 transitions. [2022-07-19 21:43:50,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 58.07142857142857) internal successors, (813), 14 states have internal predecessors, (813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,922 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 81.0) internal successors, (1215), 15 states have internal predecessors, (1215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,922 INFO L186 Difference]: Start difference. First operand has 95 places, 67 transitions, 160 flow. Second operand 14 states and 813 transitions. [2022-07-19 21:43:50,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 412 flow [2022-07-19 21:43:50,923 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 99 transitions, 348 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-07-19 21:43:50,924 INFO L242 Difference]: Finished difference. Result has 96 places, 67 transitions, 174 flow [2022-07-19 21:43:50,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=174, PETRI_PLACES=96, PETRI_TRANSITIONS=67} [2022-07-19 21:43:50,924 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-07-19 21:43:50,924 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 174 flow [2022-07-19 21:43:50,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:50,925 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:50,925 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] [2022-07-19 21:43:50,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:43:50,925 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:50,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:50,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1637742648, now seen corresponding path program 2 times [2022-07-19 21:43:50,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:50,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551355410] [2022-07-19 21:43:50,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:50,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:50,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:51,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:51,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:51,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551355410] [2022-07-19 21:43:51,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551355410] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:51,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:51,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:51,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995521106] [2022-07-19 21:43:51,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:51,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:51,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:51,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:51,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:51,010 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:51,010 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 67 transitions, 174 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,010 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:51,010 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:51,010 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:51,218 INFO L129 PetriNetUnfolder]: 23/221 cut-off events. [2022-07-19 21:43:51,218 INFO L130 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-07-19 21:43:51,219 INFO L84 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 221 events. 23/221 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 914 event pairs, 8 based on Foata normal form. 2/216 useless extension candidates. Maximal degree in co-relation 472. Up to 35 conditions per place. [2022-07-19 21:43:51,219 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 48 selfloop transitions, 7 changer transitions 14/113 dead transitions. [2022-07-19 21:43:51,219 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 113 transitions, 524 flow [2022-07-19 21:43:51,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:43:51,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:43:51,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 935 transitions. [2022-07-19 21:43:51,221 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7214506172839507 [2022-07-19 21:43:51,221 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 935 transitions. [2022-07-19 21:43:51,221 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 935 transitions. [2022-07-19 21:43:51,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:51,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 935 transitions. [2022-07-19 21:43:51,223 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 58.4375) internal successors, (935), 16 states have internal predecessors, (935), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,224 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,225 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,225 INFO L186 Difference]: Start difference. First operand has 96 places, 67 transitions, 174 flow. Second operand 16 states and 935 transitions. [2022-07-19 21:43:51,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 113 transitions, 524 flow [2022-07-19 21:43:51,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 422 flow, removed 40 selfloop flow, removed 12 redundant places. [2022-07-19 21:43:51,227 INFO L242 Difference]: Finished difference. Result has 104 places, 73 transitions, 232 flow [2022-07-19 21:43:51,227 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=232, PETRI_PLACES=104, PETRI_TRANSITIONS=73} [2022-07-19 21:43:51,227 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-07-19 21:43:51,227 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 232 flow [2022-07-19 21:43:51,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,228 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:51,228 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] [2022-07-19 21:43:51,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 21:43:51,228 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:51,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:51,229 INFO L85 PathProgramCache]: Analyzing trace with hash -980388572, now seen corresponding path program 3 times [2022-07-19 21:43:51,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:51,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722811320] [2022-07-19 21:43:51,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:51,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:51,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:51,314 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:51,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:51,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1722811320] [2022-07-19 21:43:51,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1722811320] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:51,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:51,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:51,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173316360] [2022-07-19 21:43:51,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:51,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:51,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:51,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:51,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:51,318 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:51,318 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 73 transitions, 232 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,318 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:51,319 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:51,319 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:51,464 INFO L129 PetriNetUnfolder]: 23/222 cut-off events. [2022-07-19 21:43:51,464 INFO L130 PetriNetUnfolder]: For 197/200 co-relation queries the response was YES. [2022-07-19 21:43:51,465 INFO L84 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 222 events. 23/222 cut-off events. For 197/200 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 914 event pairs, 7 based on Foata normal form. 3/213 useless extension candidates. Maximal degree in co-relation 506. Up to 29 conditions per place. [2022-07-19 21:43:51,466 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 41 selfloop transitions, 5 changer transitions 11/101 dead transitions. [2022-07-19 21:43:51,466 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 501 flow [2022-07-19 21:43:51,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:51,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:51,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 591 transitions. [2022-07-19 21:43:51,468 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7296296296296296 [2022-07-19 21:43:51,468 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 591 transitions. [2022-07-19 21:43:51,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 591 transitions. [2022-07-19 21:43:51,468 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:51,468 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 591 transitions. [2022-07-19 21:43:51,469 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.1) internal successors, (591), 10 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,470 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,470 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,470 INFO L186 Difference]: Start difference. First operand has 104 places, 73 transitions, 232 flow. Second operand 10 states and 591 transitions. [2022-07-19 21:43:51,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 501 flow [2022-07-19 21:43:51,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 457 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-07-19 21:43:51,472 INFO L242 Difference]: Finished difference. Result has 105 places, 76 transitions, 265 flow [2022-07-19 21:43:51,473 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=216, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=265, PETRI_PLACES=105, PETRI_TRANSITIONS=76} [2022-07-19 21:43:51,473 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2022-07-19 21:43:51,473 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 76 transitions, 265 flow [2022-07-19 21:43:51,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,474 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:51,474 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] [2022-07-19 21:43:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 21:43:51,474 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:51,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash -1469204850, now seen corresponding path program 4 times [2022-07-19 21:43:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:51,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621812115] [2022-07-19 21:43:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:51,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:51,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:51,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:51,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621812115] [2022-07-19 21:43:51,566 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621812115] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:51,566 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:51,566 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:51,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36591564] [2022-07-19 21:43:51,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:51,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:51,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:51,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:51,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:51,568 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:51,568 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 76 transitions, 265 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,569 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:51,569 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:51,569 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:51,825 INFO L129 PetriNetUnfolder]: 24/337 cut-off events. [2022-07-19 21:43:51,826 INFO L130 PetriNetUnfolder]: For 330/333 co-relation queries the response was YES. [2022-07-19 21:43:51,827 INFO L84 FinitePrefix]: Finished finitePrefix Result has 782 conditions, 337 events. 24/337 cut-off events. For 330/333 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1932 event pairs, 4 based on Foata normal form. 5/334 useless extension candidates. Maximal degree in co-relation 762. Up to 57 conditions per place. [2022-07-19 21:43:51,827 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 58 selfloop transitions, 12 changer transitions 15/129 dead transitions. [2022-07-19 21:43:51,827 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 129 transitions, 709 flow [2022-07-19 21:43:51,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:43:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:43:51,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 883 transitions. [2022-07-19 21:43:51,829 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7267489711934156 [2022-07-19 21:43:51,829 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 883 transitions. [2022-07-19 21:43:51,829 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 883 transitions. [2022-07-19 21:43:51,829 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:51,829 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 883 transitions. [2022-07-19 21:43:51,831 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 58.86666666666667) internal successors, (883), 15 states have internal predecessors, (883), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,832 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,832 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,832 INFO L186 Difference]: Start difference. First operand has 105 places, 76 transitions, 265 flow. Second operand 15 states and 883 transitions. [2022-07-19 21:43:51,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 129 transitions, 709 flow [2022-07-19 21:43:51,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 129 transitions, 666 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-07-19 21:43:51,835 INFO L242 Difference]: Finished difference. Result has 122 places, 84 transitions, 395 flow [2022-07-19 21:43:51,835 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=253, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=395, PETRI_PLACES=122, PETRI_TRANSITIONS=84} [2022-07-19 21:43:51,836 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2022-07-19 21:43:51,836 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 84 transitions, 395 flow [2022-07-19 21:43:51,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,836 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:51,836 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] [2022-07-19 21:43:51,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 21:43:51,837 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:51,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:51,837 INFO L85 PathProgramCache]: Analyzing trace with hash -944383944, now seen corresponding path program 5 times [2022-07-19 21:43:51,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:51,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395409244] [2022-07-19 21:43:51,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:51,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:51,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:51,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:51,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:51,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395409244] [2022-07-19 21:43:51,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395409244] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:51,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:51,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:51,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339066006] [2022-07-19 21:43:51,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:51,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:51,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:51,942 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:51,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 84 transitions, 395 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:51,942 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:51,942 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:51,943 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:52,212 INFO L129 PetriNetUnfolder]: 20/344 cut-off events. [2022-07-19 21:43:52,213 INFO L130 PetriNetUnfolder]: For 614/621 co-relation queries the response was YES. [2022-07-19 21:43:52,213 INFO L84 FinitePrefix]: Finished finitePrefix Result has 907 conditions, 344 events. 20/344 cut-off events. For 614/621 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2032 event pairs, 6 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 879. Up to 52 conditions per place. [2022-07-19 21:43:52,214 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 61 selfloop transitions, 15 changer transitions 13/133 dead transitions. [2022-07-19 21:43:52,214 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 851 flow [2022-07-19 21:43:52,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:43:52,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:43:52,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 945 transitions. [2022-07-19 21:43:52,216 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2022-07-19 21:43:52,216 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 945 transitions. [2022-07-19 21:43:52,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 945 transitions. [2022-07-19 21:43:52,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:52,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 945 transitions. [2022-07-19 21:43:52,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 59.0625) internal successors, (945), 16 states have internal predecessors, (945), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,219 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,219 INFO L186 Difference]: Start difference. First operand has 122 places, 84 transitions, 395 flow. Second operand 16 states and 945 transitions. [2022-07-19 21:43:52,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 851 flow [2022-07-19 21:43:52,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 771 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-07-19 21:43:52,222 INFO L242 Difference]: Finished difference. Result has 136 places, 88 transitions, 490 flow [2022-07-19 21:43:52,222 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=490, PETRI_PLACES=136, PETRI_TRANSITIONS=88} [2022-07-19 21:43:52,223 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 62 predicate places. [2022-07-19 21:43:52,223 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 88 transitions, 490 flow [2022-07-19 21:43:52,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,223 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:52,223 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] [2022-07-19 21:43:52,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:43:52,223 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:52,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:52,224 INFO L85 PathProgramCache]: Analyzing trace with hash -1243082400, now seen corresponding path program 6 times [2022-07-19 21:43:52,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:52,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52622915] [2022-07-19 21:43:52,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:52,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:52,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:52,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:52,318 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52622915] [2022-07-19 21:43:52,318 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52622915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:52,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:52,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:52,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439011463] [2022-07-19 21:43:52,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:52,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:52,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:52,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:52,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:52,319 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:52,320 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 88 transitions, 490 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,320 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:52,320 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:52,320 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:52,494 INFO L129 PetriNetUnfolder]: 18/317 cut-off events. [2022-07-19 21:43:52,495 INFO L130 PetriNetUnfolder]: For 824/831 co-relation queries the response was YES. [2022-07-19 21:43:52,496 INFO L84 FinitePrefix]: Finished finitePrefix Result has 899 conditions, 317 events. 18/317 cut-off events. For 824/831 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1770 event pairs, 4 based on Foata normal form. 4/315 useless extension candidates. Maximal degree in co-relation 865. Up to 87 conditions per place. [2022-07-19 21:43:52,496 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 50 selfloop transitions, 8 changer transitions 11/113 dead transitions. [2022-07-19 21:43:52,497 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 113 transitions, 803 flow [2022-07-19 21:43:52,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:52,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:52,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 592 transitions. [2022-07-19 21:43:52,498 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7308641975308642 [2022-07-19 21:43:52,498 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 592 transitions. [2022-07-19 21:43:52,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 592 transitions. [2022-07-19 21:43:52,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:52,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 592 transitions. [2022-07-19 21:43:52,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.2) internal successors, (592), 10 states have internal predecessors, (592), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,500 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,500 INFO L186 Difference]: Start difference. First operand has 136 places, 88 transitions, 490 flow. Second operand 10 states and 592 transitions. [2022-07-19 21:43:52,501 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 113 transitions, 803 flow [2022-07-19 21:43:52,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 113 transitions, 742 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-07-19 21:43:52,505 INFO L242 Difference]: Finished difference. Result has 136 places, 88 transitions, 482 flow [2022-07-19 21:43:52,505 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=451, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=136, PETRI_TRANSITIONS=88} [2022-07-19 21:43:52,505 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 62 predicate places. [2022-07-19 21:43:52,506 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 88 transitions, 482 flow [2022-07-19 21:43:52,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,506 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:52,506 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] [2022-07-19 21:43:52,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 21:43:52,506 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:52,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:52,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1453765160, now seen corresponding path program 7 times [2022-07-19 21:43:52,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:52,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023676780] [2022-07-19 21:43:52,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:52,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:52,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:52,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023676780] [2022-07-19 21:43:52,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023676780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:52,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:52,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:52,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796034766] [2022-07-19 21:43:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:52,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:52,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:52,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:52,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:52,600 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:52,600 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 88 transitions, 482 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,600 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:52,600 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:52,601 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:52,788 INFO L129 PetriNetUnfolder]: 15/325 cut-off events. [2022-07-19 21:43:52,788 INFO L130 PetriNetUnfolder]: For 775/777 co-relation queries the response was YES. [2022-07-19 21:43:52,789 INFO L84 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 325 events. 15/325 cut-off events. For 775/777 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1865 event pairs, 6 based on Foata normal form. 3/320 useless extension candidates. Maximal degree in co-relation 852. Up to 57 conditions per place. [2022-07-19 21:43:52,790 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 66 selfloop transitions, 10 changer transitions 7/127 dead transitions. [2022-07-19 21:43:52,790 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 862 flow [2022-07-19 21:43:52,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:52,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:52,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2022-07-19 21:43:52,791 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-07-19 21:43:52,791 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2022-07-19 21:43:52,791 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2022-07-19 21:43:52,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:52,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2022-07-19 21:43:52,792 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 61.0) internal successors, (610), 10 states have internal predecessors, (610), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,793 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,793 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,793 INFO L186 Difference]: Start difference. First operand has 136 places, 88 transitions, 482 flow. Second operand 10 states and 610 transitions. [2022-07-19 21:43:52,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 862 flow [2022-07-19 21:43:52,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 127 transitions, 789 flow, removed 26 selfloop flow, removed 10 redundant places. [2022-07-19 21:43:52,797 INFO L242 Difference]: Finished difference. Result has 138 places, 91 transitions, 534 flow [2022-07-19 21:43:52,798 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=449, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=534, PETRI_PLACES=138, PETRI_TRANSITIONS=91} [2022-07-19 21:43:52,798 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 64 predicate places. [2022-07-19 21:43:52,798 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 91 transitions, 534 flow [2022-07-19 21:43:52,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,798 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:52,799 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] [2022-07-19 21:43:52,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 21:43:52,799 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1774556640, now seen corresponding path program 8 times [2022-07-19 21:43:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432209374] [2022-07-19 21:43:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:52,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:52,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:52,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:52,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:52,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432209374] [2022-07-19 21:43:52,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432209374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:52,882 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:52,882 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:52,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425755117] [2022-07-19 21:43:52,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:52,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:52,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:52,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:52,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:52,884 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:52,884 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 91 transitions, 534 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:52,884 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:52,884 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:52,884 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:53,107 INFO L129 PetriNetUnfolder]: 14/301 cut-off events. [2022-07-19 21:43:53,107 INFO L130 PetriNetUnfolder]: For 715/717 co-relation queries the response was YES. [2022-07-19 21:43:53,108 INFO L84 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 301 events. 14/301 cut-off events. For 715/717 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1664 event pairs, 2 based on Foata normal form. 5/301 useless extension candidates. Maximal degree in co-relation 809. Up to 72 conditions per place. [2022-07-19 21:43:53,108 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 37 selfloop transitions, 6 changer transitions 30/117 dead transitions. [2022-07-19 21:43:53,108 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 117 transitions, 856 flow [2022-07-19 21:43:53,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:43:53,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-19 21:43:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 865 transitions. [2022-07-19 21:43:53,110 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7119341563786008 [2022-07-19 21:43:53,110 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 865 transitions. [2022-07-19 21:43:53,110 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 865 transitions. [2022-07-19 21:43:53,110 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:53,110 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 865 transitions. [2022-07-19 21:43:53,111 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 57.666666666666664) internal successors, (865), 15 states have internal predecessors, (865), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,112 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,112 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 81.0) internal successors, (1296), 16 states have internal predecessors, (1296), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,112 INFO L186 Difference]: Start difference. First operand has 138 places, 91 transitions, 534 flow. Second operand 15 states and 865 transitions. [2022-07-19 21:43:53,112 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 117 transitions, 856 flow [2022-07-19 21:43:53,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 117 transitions, 820 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-07-19 21:43:53,118 INFO L242 Difference]: Finished difference. Result has 152 places, 82 transitions, 411 flow [2022-07-19 21:43:53,118 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=508, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=411, PETRI_PLACES=152, PETRI_TRANSITIONS=82} [2022-07-19 21:43:53,118 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 78 predicate places. [2022-07-19 21:43:53,118 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 82 transitions, 411 flow [2022-07-19 21:43:53,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,119 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:53,119 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] [2022-07-19 21:43:53,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:43:53,119 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:53,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash -128760964, now seen corresponding path program 9 times [2022-07-19 21:43:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:53,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307952777] [2022-07-19 21:43:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:53,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:53,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:53,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:53,205 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307952777] [2022-07-19 21:43:53,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307952777] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:53,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:53,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:53,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20085201] [2022-07-19 21:43:53,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:53,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:53,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:53,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:53,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:53,206 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:53,207 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 82 transitions, 411 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,207 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:53,207 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:53,207 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:53,350 INFO L129 PetriNetUnfolder]: 11/220 cut-off events. [2022-07-19 21:43:53,350 INFO L130 PetriNetUnfolder]: For 558/563 co-relation queries the response was YES. [2022-07-19 21:43:53,351 INFO L84 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 220 events. 11/220 cut-off events. For 558/563 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 938 event pairs, 0 based on Foata normal form. 4/217 useless extension candidates. Maximal degree in co-relation 588. Up to 39 conditions per place. [2022-07-19 21:43:53,351 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 39 selfloop transitions, 7 changer transitions 10/100 dead transitions. [2022-07-19 21:43:53,351 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 100 transitions, 642 flow [2022-07-19 21:43:53,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:53,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:53,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-07-19 21:43:53,352 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-07-19 21:43:53,352 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-07-19 21:43:53,352 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-07-19 21:43:53,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:53,353 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-07-19 21:43:53,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,354 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,354 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,355 INFO L186 Difference]: Start difference. First operand has 152 places, 82 transitions, 411 flow. Second operand 10 states and 590 transitions. [2022-07-19 21:43:53,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 100 transitions, 642 flow [2022-07-19 21:43:53,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 100 transitions, 552 flow, removed 38 selfloop flow, removed 17 redundant places. [2022-07-19 21:43:53,358 INFO L242 Difference]: Finished difference. Result has 132 places, 81 transitions, 373 flow [2022-07-19 21:43:53,358 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=357, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=373, PETRI_PLACES=132, PETRI_TRANSITIONS=81} [2022-07-19 21:43:53,358 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 58 predicate places. [2022-07-19 21:43:53,358 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 81 transitions, 373 flow [2022-07-19 21:43:53,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,358 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:53,358 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] [2022-07-19 21:43:53,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:43:53,359 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:53,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:53,359 INFO L85 PathProgramCache]: Analyzing trace with hash -608837740, now seen corresponding path program 10 times [2022-07-19 21:43:53,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:53,359 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213904411] [2022-07-19 21:43:53,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:53,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:53,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:53,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:53,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:53,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213904411] [2022-07-19 21:43:53,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213904411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:53,441 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:53,441 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:53,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659335383] [2022-07-19 21:43:53,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:53,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:53,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:53,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:53,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:53,442 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:53,442 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 81 transitions, 373 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,443 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:53,443 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:53,443 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:53,588 INFO L129 PetriNetUnfolder]: 9/195 cut-off events. [2022-07-19 21:43:53,588 INFO L130 PetriNetUnfolder]: For 338/341 co-relation queries the response was YES. [2022-07-19 21:43:53,589 INFO L84 FinitePrefix]: Finished finitePrefix Result has 505 conditions, 195 events. 9/195 cut-off events. For 338/341 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 742 event pairs, 0 based on Foata normal form. 4/192 useless extension candidates. Maximal degree in co-relation 475. Up to 39 conditions per place. [2022-07-19 21:43:53,589 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 39 selfloop transitions, 4 changer transitions 12/99 dead transitions. [2022-07-19 21:43:53,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 99 transitions, 577 flow [2022-07-19 21:43:53,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:53,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:53,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 591 transitions. [2022-07-19 21:43:53,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7296296296296296 [2022-07-19 21:43:53,593 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 591 transitions. [2022-07-19 21:43:53,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 591 transitions. [2022-07-19 21:43:53,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:53,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 591 transitions. [2022-07-19 21:43:53,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.1) internal successors, (591), 10 states have internal predecessors, (591), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,594 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,595 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,595 INFO L186 Difference]: Start difference. First operand has 132 places, 81 transitions, 373 flow. Second operand 10 states and 591 transitions. [2022-07-19 21:43:53,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 99 transitions, 577 flow [2022-07-19 21:43:53,596 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 99 transitions, 515 flow, removed 14 selfloop flow, removed 13 redundant places. [2022-07-19 21:43:53,597 INFO L242 Difference]: Finished difference. Result has 128 places, 78 transitions, 313 flow [2022-07-19 21:43:53,597 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=329, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=313, PETRI_PLACES=128, PETRI_TRANSITIONS=78} [2022-07-19 21:43:53,597 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 54 predicate places. [2022-07-19 21:43:53,598 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 78 transitions, 313 flow [2022-07-19 21:43:53,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,598 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:53,598 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] [2022-07-19 21:43:53,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 21:43:53,598 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:53,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:53,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1443359976, now seen corresponding path program 11 times [2022-07-19 21:43:53,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:53,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172592728] [2022-07-19 21:43:53,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:53,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:53,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:53,683 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:53,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:53,683 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172592728] [2022-07-19 21:43:53,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172592728] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:53,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:53,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:53,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978677316] [2022-07-19 21:43:53,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:53,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:53,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:53,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:53,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:53,685 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:53,685 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 78 transitions, 313 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,685 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:53,685 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:53,685 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:53,874 INFO L129 PetriNetUnfolder]: 9/161 cut-off events. [2022-07-19 21:43:53,874 INFO L130 PetriNetUnfolder]: For 226/228 co-relation queries the response was YES. [2022-07-19 21:43:53,874 INFO L84 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 161 events. 9/161 cut-off events. For 226/228 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 520 event pairs, 4 based on Foata normal form. 4/160 useless extension candidates. Maximal degree in co-relation 382. Up to 26 conditions per place. [2022-07-19 21:43:53,874 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 24 selfloop transitions, 1 changer transitions 30/97 dead transitions. [2022-07-19 21:43:53,875 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 97 transitions, 514 flow [2022-07-19 21:43:53,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:43:53,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-19 21:43:53,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 918 transitions. [2022-07-19 21:43:53,876 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-07-19 21:43:53,876 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 918 transitions. [2022-07-19 21:43:53,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 918 transitions. [2022-07-19 21:43:53,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:53,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 918 transitions. [2022-07-19 21:43:53,877 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 57.375) internal successors, (918), 16 states have internal predecessors, (918), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,878 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,878 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 81.0) internal successors, (1377), 17 states have internal predecessors, (1377), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,878 INFO L186 Difference]: Start difference. First operand has 128 places, 78 transitions, 313 flow. Second operand 16 states and 918 transitions. [2022-07-19 21:43:53,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 97 transitions, 514 flow [2022-07-19 21:43:53,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 97 transitions, 463 flow, removed 14 selfloop flow, removed 13 redundant places. [2022-07-19 21:43:53,880 INFO L242 Difference]: Finished difference. Result has 129 places, 65 transitions, 186 flow [2022-07-19 21:43:53,880 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=186, PETRI_PLACES=129, PETRI_TRANSITIONS=65} [2022-07-19 21:43:53,881 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 55 predicate places. [2022-07-19 21:43:53,881 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 65 transitions, 186 flow [2022-07-19 21:43:53,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,881 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:53,881 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] [2022-07-19 21:43:53,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:43:53,881 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:53,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:53,882 INFO L85 PathProgramCache]: Analyzing trace with hash 451166386, now seen corresponding path program 12 times [2022-07-19 21:43:53,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:53,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580297837] [2022-07-19 21:43:53,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:53,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:53,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:53,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:53,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580297837] [2022-07-19 21:43:53,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580297837] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:53,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:53,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:53,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331285980] [2022-07-19 21:43:53,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:53,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:53,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:53,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:53,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:53,973 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:53,973 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 129 places, 65 transitions, 186 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:53,973 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:53,974 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:53,974 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:54,122 INFO L129 PetriNetUnfolder]: 7/128 cut-off events. [2022-07-19 21:43:54,122 INFO L130 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-07-19 21:43:54,123 INFO L84 FinitePrefix]: Finished finitePrefix Result has 304 conditions, 128 events. 7/128 cut-off events. For 115/116 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 287 event pairs, 0 based on Foata normal form. 2/129 useless extension candidates. Maximal degree in co-relation 280. Up to 17 conditions per place. [2022-07-19 21:43:54,123 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 30 selfloop transitions, 5 changer transitions 6/83 dead transitions. [2022-07-19 21:43:54,123 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 83 transitions, 365 flow [2022-07-19 21:43:54,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:54,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:54,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 582 transitions. [2022-07-19 21:43:54,124 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-07-19 21:43:54,124 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 582 transitions. [2022-07-19 21:43:54,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 582 transitions. [2022-07-19 21:43:54,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:54,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 582 transitions. [2022-07-19 21:43:54,125 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.2) internal successors, (582), 10 states have internal predecessors, (582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,126 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,126 INFO L186 Difference]: Start difference. First operand has 129 places, 65 transitions, 186 flow. Second operand 10 states and 582 transitions. [2022-07-19 21:43:54,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 83 transitions, 365 flow [2022-07-19 21:43:54,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 288 flow, removed 34 selfloop flow, removed 18 redundant places. [2022-07-19 21:43:54,128 INFO L242 Difference]: Finished difference. Result has 97 places, 67 transitions, 189 flow [2022-07-19 21:43:54,128 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=189, PETRI_PLACES=97, PETRI_TRANSITIONS=67} [2022-07-19 21:43:54,128 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2022-07-19 21:43:54,128 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 189 flow [2022-07-19 21:43:54,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,128 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:54,128 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] [2022-07-19 21:43:54,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 21:43:54,129 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:54,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:54,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1759837642, now seen corresponding path program 13 times [2022-07-19 21:43:54,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:54,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591156558] [2022-07-19 21:43:54,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:54,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:54,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:54,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:54,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591156558] [2022-07-19 21:43:54,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591156558] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:54,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:54,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:54,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321209574] [2022-07-19 21:43:54,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:54,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:54,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:54,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:54,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:54,236 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:54,236 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 67 transitions, 189 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,236 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:54,236 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:54,236 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:54,377 INFO L129 PetriNetUnfolder]: 5/130 cut-off events. [2022-07-19 21:43:54,377 INFO L130 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-07-19 21:43:54,377 INFO L84 FinitePrefix]: Finished finitePrefix Result has 279 conditions, 130 events. 5/130 cut-off events. For 51/52 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 318 event pairs, 0 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 264. Up to 21 conditions per place. [2022-07-19 21:43:54,377 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 25 selfloop transitions, 5 changer transitions 11/83 dead transitions. [2022-07-19 21:43:54,377 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 83 transitions, 358 flow [2022-07-19 21:43:54,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:54,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:54,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 579 transitions. [2022-07-19 21:43:54,378 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7148148148148148 [2022-07-19 21:43:54,378 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 579 transitions. [2022-07-19 21:43:54,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 579 transitions. [2022-07-19 21:43:54,379 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:54,379 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 579 transitions. [2022-07-19 21:43:54,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.9) internal successors, (579), 10 states have internal predecessors, (579), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,380 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,380 INFO L186 Difference]: Start difference. First operand has 97 places, 67 transitions, 189 flow. Second operand 10 states and 579 transitions. [2022-07-19 21:43:54,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 83 transitions, 358 flow [2022-07-19 21:43:54,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 83 transitions, 336 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-19 21:43:54,382 INFO L242 Difference]: Finished difference. Result has 103 places, 67 transitions, 201 flow [2022-07-19 21:43:54,382 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=201, PETRI_PLACES=103, PETRI_TRANSITIONS=67} [2022-07-19 21:43:54,382 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2022-07-19 21:43:54,382 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 201 flow [2022-07-19 21:43:54,382 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,382 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:54,383 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] [2022-07-19 21:43:54,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 21:43:54,383 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:54,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:54,383 INFO L85 PathProgramCache]: Analyzing trace with hash 425023720, now seen corresponding path program 14 times [2022-07-19 21:43:54,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:54,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013999730] [2022-07-19 21:43:54,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:54,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:54,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:54,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:54,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:54,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013999730] [2022-07-19 21:43:54,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013999730] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:54,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:54,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:54,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221637032] [2022-07-19 21:43:54,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:54,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:54,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:54,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:54,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:54,463 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:54,464 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 67 transitions, 201 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,464 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:54,464 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:54,464 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:54,589 INFO L129 PetriNetUnfolder]: 6/156 cut-off events. [2022-07-19 21:43:54,590 INFO L130 PetriNetUnfolder]: For 119/120 co-relation queries the response was YES. [2022-07-19 21:43:54,590 INFO L84 FinitePrefix]: Finished finitePrefix Result has 358 conditions, 156 events. 6/156 cut-off events. For 119/120 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 484 event pairs, 3 based on Foata normal form. 2/156 useless extension candidates. Maximal degree in co-relation 340. Up to 20 conditions per place. [2022-07-19 21:43:54,590 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 36 selfloop transitions, 6 changer transitions 7/91 dead transitions. [2022-07-19 21:43:54,590 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 91 transitions, 414 flow [2022-07-19 21:43:54,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:54,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:54,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-07-19 21:43:54,591 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-07-19 21:43:54,591 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-07-19 21:43:54,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-07-19 21:43:54,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:54,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-07-19 21:43:54,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.9) internal successors, (589), 10 states have internal predecessors, (589), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,593 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,593 INFO L186 Difference]: Start difference. First operand has 103 places, 67 transitions, 201 flow. Second operand 10 states and 589 transitions. [2022-07-19 21:43:54,593 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 91 transitions, 414 flow [2022-07-19 21:43:54,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 91 transitions, 369 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-07-19 21:43:54,594 INFO L242 Difference]: Finished difference. Result has 106 places, 70 transitions, 238 flow [2022-07-19 21:43:54,595 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=238, PETRI_PLACES=106, PETRI_TRANSITIONS=70} [2022-07-19 21:43:54,595 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2022-07-19 21:43:54,595 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 70 transitions, 238 flow [2022-07-19 21:43:54,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,595 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:54,595 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] [2022-07-19 21:43:54,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 21:43:54,595 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:54,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:54,596 INFO L85 PathProgramCache]: Analyzing trace with hash -936834938, now seen corresponding path program 15 times [2022-07-19 21:43:54,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:54,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047744895] [2022-07-19 21:43:54,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:54,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:54,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:54,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:54,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047744895] [2022-07-19 21:43:54,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047744895] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:54,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:54,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:54,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672984203] [2022-07-19 21:43:54,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:54,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:54,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:54,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:54,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:54,672 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:54,673 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 70 transitions, 238 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,673 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:54,673 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:54,673 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:54,804 INFO L129 PetriNetUnfolder]: 4/157 cut-off events. [2022-07-19 21:43:54,804 INFO L130 PetriNetUnfolder]: For 137/140 co-relation queries the response was YES. [2022-07-19 21:43:54,805 INFO L84 FinitePrefix]: Finished finitePrefix Result has 374 conditions, 157 events. 4/157 cut-off events. For 137/140 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 507 event pairs, 3 based on Foata normal form. 4/159 useless extension candidates. Maximal degree in co-relation 354. Up to 20 conditions per place. [2022-07-19 21:43:54,805 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 30 selfloop transitions, 5 changer transitions 11/88 dead transitions. [2022-07-19 21:43:54,805 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 88 transitions, 428 flow [2022-07-19 21:43:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:54,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:54,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-07-19 21:43:54,807 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-07-19 21:43:54,807 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-07-19 21:43:54,807 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-07-19 21:43:54,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:54,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-07-19 21:43:54,808 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,810 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,810 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,810 INFO L186 Difference]: Start difference. First operand has 106 places, 70 transitions, 238 flow. Second operand 10 states and 584 transitions. [2022-07-19 21:43:54,810 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 88 transitions, 428 flow [2022-07-19 21:43:54,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 88 transitions, 403 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-19 21:43:54,812 INFO L242 Difference]: Finished difference. Result has 113 places, 71 transitions, 262 flow [2022-07-19 21:43:54,812 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=227, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=262, PETRI_PLACES=113, PETRI_TRANSITIONS=71} [2022-07-19 21:43:54,813 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2022-07-19 21:43:54,813 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 71 transitions, 262 flow [2022-07-19 21:43:54,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,813 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:54,813 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] [2022-07-19 21:43:54,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:43:54,813 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:54,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:54,813 INFO L85 PathProgramCache]: Analyzing trace with hash 2008951810, now seen corresponding path program 16 times [2022-07-19 21:43:54,813 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:54,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395019132] [2022-07-19 21:43:54,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:54,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:54,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:54,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:54,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:54,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395019132] [2022-07-19 21:43:54,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [395019132] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:54,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:54,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:54,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440303312] [2022-07-19 21:43:54,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:54,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:54,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:54,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:54,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:54,908 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:54,908 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 71 transitions, 262 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:54,908 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:54,908 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:54,908 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:55,046 INFO L129 PetriNetUnfolder]: 2/170 cut-off events. [2022-07-19 21:43:55,046 INFO L130 PetriNetUnfolder]: For 188/191 co-relation queries the response was YES. [2022-07-19 21:43:55,047 INFO L84 FinitePrefix]: Finished finitePrefix Result has 408 conditions, 170 events. 2/170 cut-off events. For 188/191 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 603 event pairs, 0 based on Foata normal form. 1/169 useless extension candidates. Maximal degree in co-relation 385. Up to 27 conditions per place. [2022-07-19 21:43:55,047 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 36 selfloop transitions, 8 changer transitions 9/95 dead transitions. [2022-07-19 21:43:55,047 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 95 transitions, 486 flow [2022-07-19 21:43:55,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:55,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:55,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-07-19 21:43:55,049 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-07-19 21:43:55,049 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-07-19 21:43:55,049 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-07-19 21:43:55,049 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:55,049 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-07-19 21:43:55,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 59.0) internal successors, (590), 10 states have internal predecessors, (590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,051 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,051 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,051 INFO L186 Difference]: Start difference. First operand has 113 places, 71 transitions, 262 flow. Second operand 10 states and 590 transitions. [2022-07-19 21:43:55,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 95 transitions, 486 flow [2022-07-19 21:43:55,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 95 transitions, 454 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-07-19 21:43:55,053 INFO L242 Difference]: Finished difference. Result has 118 places, 74 transitions, 316 flow [2022-07-19 21:43:55,053 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=316, PETRI_PLACES=118, PETRI_TRANSITIONS=74} [2022-07-19 21:43:55,053 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 44 predicate places. [2022-07-19 21:43:55,053 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 316 flow [2022-07-19 21:43:55,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,054 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:55,054 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] [2022-07-19 21:43:55,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 21:43:55,054 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:55,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:55,054 INFO L85 PathProgramCache]: Analyzing trace with hash 635828710, now seen corresponding path program 17 times [2022-07-19 21:43:55,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:55,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60856058] [2022-07-19 21:43:55,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:55,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:55,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:55,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:55,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:55,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60856058] [2022-07-19 21:43:55,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60856058] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:55,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:55,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:55,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400973404] [2022-07-19 21:43:55,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:55,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:55,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:55,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:55,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:55,145 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:55,145 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 74 transitions, 316 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,145 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:55,145 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:55,145 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:55,279 INFO L129 PetriNetUnfolder]: 2/155 cut-off events. [2022-07-19 21:43:55,279 INFO L130 PetriNetUnfolder]: For 260/269 co-relation queries the response was YES. [2022-07-19 21:43:55,280 INFO L84 FinitePrefix]: Finished finitePrefix Result has 401 conditions, 155 events. 2/155 cut-off events. For 260/269 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 498 event pairs, 1 based on Foata normal form. 4/156 useless extension candidates. Maximal degree in co-relation 375. Up to 26 conditions per place. [2022-07-19 21:43:55,280 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 31 selfloop transitions, 4 changer transitions 12/89 dead transitions. [2022-07-19 21:43:55,280 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 89 transitions, 484 flow [2022-07-19 21:43:55,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-07-19 21:43:55,281 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-07-19 21:43:55,281 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-07-19 21:43:55,281 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-07-19 21:43:55,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:55,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-07-19 21:43:55,282 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.4) internal successors, (584), 10 states have internal predecessors, (584), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,283 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,283 INFO L186 Difference]: Start difference. First operand has 118 places, 74 transitions, 316 flow. Second operand 10 states and 584 transitions. [2022-07-19 21:43:55,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 89 transitions, 484 flow [2022-07-19 21:43:55,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 89 transitions, 454 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-07-19 21:43:55,285 INFO L242 Difference]: Finished difference. Result has 123 places, 71 transitions, 275 flow [2022-07-19 21:43:55,285 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=296, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=275, PETRI_PLACES=123, PETRI_TRANSITIONS=71} [2022-07-19 21:43:55,286 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2022-07-19 21:43:55,286 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 71 transitions, 275 flow [2022-07-19 21:43:55,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,286 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:55,286 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] [2022-07-19 21:43:55,286 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:43:55,286 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:55,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:55,287 INFO L85 PathProgramCache]: Analyzing trace with hash 519427062, now seen corresponding path program 18 times [2022-07-19 21:43:55,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:55,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206501845] [2022-07-19 21:43:55,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:55,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:55,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:55,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:55,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206501845] [2022-07-19 21:43:55,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206501845] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:55,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:55,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:55,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223109398] [2022-07-19 21:43:55,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:55,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:55,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:55,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:55,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:55,390 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:55,390 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 71 transitions, 275 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,390 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:55,390 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:55,390 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:55,517 INFO L129 PetriNetUnfolder]: 2/126 cut-off events. [2022-07-19 21:43:55,518 INFO L130 PetriNetUnfolder]: For 148/155 co-relation queries the response was YES. [2022-07-19 21:43:55,518 INFO L84 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 126 events. 2/126 cut-off events. For 148/155 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 294 event pairs, 1 based on Foata normal form. 3/126 useless extension candidates. Maximal degree in co-relation 289. Up to 23 conditions per place. [2022-07-19 21:43:55,518 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 21 selfloop transitions, 3 changer transitions 13/79 dead transitions. [2022-07-19 21:43:55,518 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 79 transitions, 390 flow [2022-07-19 21:43:55,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:55,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:55,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 576 transitions. [2022-07-19 21:43:55,519 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2022-07-19 21:43:55,519 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 576 transitions. [2022-07-19 21:43:55,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 576 transitions. [2022-07-19 21:43:55,520 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:55,520 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 576 transitions. [2022-07-19 21:43:55,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.6) internal successors, (576), 10 states have internal predecessors, (576), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,521 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,521 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,521 INFO L186 Difference]: Start difference. First operand has 123 places, 71 transitions, 275 flow. Second operand 10 states and 576 transitions. [2022-07-19 21:43:55,521 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 79 transitions, 390 flow [2022-07-19 21:43:55,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 79 transitions, 351 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-07-19 21:43:55,523 INFO L242 Difference]: Finished difference. Result has 115 places, 66 transitions, 202 flow [2022-07-19 21:43:55,523 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=242, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=202, PETRI_PLACES=115, PETRI_TRANSITIONS=66} [2022-07-19 21:43:55,523 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2022-07-19 21:43:55,523 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 66 transitions, 202 flow [2022-07-19 21:43:55,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,524 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:55,524 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] [2022-07-19 21:43:55,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:43:55,524 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:55,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:55,524 INFO L85 PathProgramCache]: Analyzing trace with hash 263507622, now seen corresponding path program 19 times [2022-07-19 21:43:55,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:55,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895616896] [2022-07-19 21:43:55,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:55,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:55,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:55,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:55,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:55,604 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895616896] [2022-07-19 21:43:55,604 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895616896] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:55,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:55,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:55,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828213466] [2022-07-19 21:43:55,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:55,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:55,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:55,606 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:55,606 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 66 transitions, 202 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,606 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:55,607 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:55,607 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:55,725 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2022-07-19 21:43:55,726 INFO L130 PetriNetUnfolder]: For 68/70 co-relation queries the response was YES. [2022-07-19 21:43:55,726 INFO L84 FinitePrefix]: Finished finitePrefix Result has 212 conditions, 91 events. 2/91 cut-off events. For 68/70 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 90 event pairs, 0 based on Foata normal form. 1/91 useless extension candidates. Maximal degree in co-relation 191. Up to 11 conditions per place. [2022-07-19 21:43:55,727 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 19 selfloop transitions, 5 changer transitions 9/75 dead transitions. [2022-07-19 21:43:55,727 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 75 transitions, 318 flow [2022-07-19 21:43:55,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:55,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:55,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-07-19 21:43:55,728 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7074074074074074 [2022-07-19 21:43:55,728 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 573 transitions. [2022-07-19 21:43:55,728 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 573 transitions. [2022-07-19 21:43:55,728 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:55,728 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 573 transitions. [2022-07-19 21:43:55,729 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 57.3) internal successors, (573), 10 states have internal predecessors, (573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,731 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,731 INFO L186 Difference]: Start difference. First operand has 115 places, 66 transitions, 202 flow. Second operand 10 states and 573 transitions. [2022-07-19 21:43:55,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 75 transitions, 318 flow [2022-07-19 21:43:55,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 75 transitions, 269 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-07-19 21:43:55,733 INFO L242 Difference]: Finished difference. Result has 102 places, 65 transitions, 181 flow [2022-07-19 21:43:55,733 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=181, PETRI_PLACES=102, PETRI_TRANSITIONS=65} [2022-07-19 21:43:55,735 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2022-07-19 21:43:55,736 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 65 transitions, 181 flow [2022-07-19 21:43:55,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,736 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-19 21:43:55,736 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] [2022-07-19 21:43:55,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:43:55,736 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-19 21:43:55,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:43:55,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1160016076, now seen corresponding path program 20 times [2022-07-19 21:43:55,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:43:55,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126238784] [2022-07-19 21:43:55,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:43:55,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:43:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:43:55,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 21:43:55,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:43:55,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126238784] [2022-07-19 21:43:55,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126238784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:43:55,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:43:55,821 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:43:55,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168997900] [2022-07-19 21:43:55,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:43:55,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:43:55,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:43:55,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:43:55,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:43:55,822 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-19 21:43:55,822 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 65 transitions, 181 flow. Second operand has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,822 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-19 21:43:55,822 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-19 21:43:55,822 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-19 21:43:55,923 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2022-07-19 21:43:55,923 INFO L130 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-07-19 21:43:55,923 INFO L84 FinitePrefix]: Finished finitePrefix Result has 150 conditions, 69 events. 2/69 cut-off events. For 41/41 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 35 event pairs, 0 based on Foata normal form. 1/69 useless extension candidates. Maximal degree in co-relation 135. Up to 11 conditions per place. [2022-07-19 21:43:55,923 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-07-19 21:43:55,923 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 64 transitions, 236 flow [2022-07-19 21:43:55,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:43:55,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-19 21:43:55,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 565 transitions. [2022-07-19 21:43:55,924 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2022-07-19 21:43:55,924 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 565 transitions. [2022-07-19 21:43:55,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 565 transitions. [2022-07-19 21:43:55,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-19 21:43:55,924 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 565 transitions. [2022-07-19 21:43:55,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 56.5) internal successors, (565), 10 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,926 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,926 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,926 INFO L186 Difference]: Start difference. First operand has 102 places, 65 transitions, 181 flow. Second operand 10 states and 565 transitions. [2022-07-19 21:43:55,926 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 64 transitions, 236 flow [2022-07-19 21:43:55,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 64 transitions, 205 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-07-19 21:43:55,927 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-19 21:43:55,927 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=81, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=93, PETRI_TRANSITIONS=0} [2022-07-19 21:43:55,928 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2022-07-19 21:43:55,928 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-19 21:43:55,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 56.2) internal successors, (562), 10 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-19 21:43:55,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-19 21:43:55,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-19 21:43:55,930 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-19 21:43:55,930 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-19 21:43:55,931 INFO L356 BasicCegarLoop]: Path program histogram: [20, 10] [2022-07-19 21:43:55,933 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-19 21:43:55,933 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-19 21:43:55,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:43:55 BasicIcfg [2022-07-19 21:43:55,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-19 21:43:55,938 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-19 21:43:55,938 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-19 21:43:55,938 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-19 21:43:55,938 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:43:46" (3/4) ... [2022-07-19 21:43:55,940 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-19 21:43:55,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-19 21:43:55,944 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-19 21:43:55,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-19 21:43:55,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-19 21:43:55,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-19 21:43:55,949 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-19 21:43:55,975 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-19 21:43:55,975 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-19 21:43:55,976 INFO L158 Benchmark]: Toolchain (without parser) took 9473.28ms. Allocated memory was 92.3MB in the beginning and 142.6MB in the end (delta: 50.3MB). Free memory was 61.3MB in the beginning and 93.0MB in the end (delta: -31.8MB). Peak memory consumption was 19.5MB. Max. memory is 16.1GB. [2022-07-19 21:43:55,976 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:43:55,976 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.03ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 61.1MB in the beginning and 92.1MB in the end (delta: -31.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-19 21:43:55,977 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.81ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 90.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-19 21:43:55,977 INFO L158 Benchmark]: Boogie Preprocessor took 12.84ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 89.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-19 21:43:55,977 INFO L158 Benchmark]: RCFGBuilder took 249.38ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 78.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-19 21:43:55,977 INFO L158 Benchmark]: TraceAbstraction took 8945.92ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 77.8MB in the beginning and 95.1MB in the end (delta: -17.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. [2022-07-19 21:43:55,980 INFO L158 Benchmark]: Witness Printer took 37.53ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-19 21:43:55,981 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 92.3MB. Free memory was 48.2MB in the beginning and 48.1MB in the end (delta: 84.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 199.03ms. Allocated memory was 92.3MB in the beginning and 117.4MB in the end (delta: 25.2MB). Free memory was 61.1MB in the beginning and 92.1MB in the end (delta: -31.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.81ms. Allocated memory is still 117.4MB. Free memory was 92.1MB in the beginning and 90.6MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 12.84ms. Allocated memory is still 117.4MB. Free memory was 90.6MB in the beginning and 89.4MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 249.38ms. Allocated memory is still 117.4MB. Free memory was 89.4MB in the beginning and 78.5MB in the end (delta: 10.9MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8945.92ms. Allocated memory was 117.4MB in the beginning and 142.6MB in the end (delta: 25.2MB). Free memory was 77.8MB in the beginning and 95.1MB in the end (delta: -17.3MB). Peak memory consumption was 10.0MB. Max. memory is 16.1GB. * Witness Printer took 37.53ms. Allocated memory is still 142.6MB. Free memory was 95.1MB in the beginning and 93.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 101 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.9s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 5.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1703 SdHoareTripleChecker+Valid, 1.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1703 mSDsluCounter, 3790 SdHoareTripleChecker+Invalid, 1.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4361 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3850 IncrementalHoareTripleChecker+Invalid, 3869 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 686 mSDtfsCounter, 3850 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 517 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 454 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 415 ImplicationChecksByTransitivity, 3.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=534occurred in iteration=17, InterpolantAutomatonStates: 338, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1860 NumberOfCodeBlocks, 1860 NumberOfCodeBlocksAsserted, 30 NumberOfCheckSat, 1830 ConstructedInterpolants, 0 QuantifiedInterpolants, 12009 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 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! [2022-07-19 21:43:56,017 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