./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 f4b24e32 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-?-f4b24e3 [2022-07-13 22:21:31,701 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 22:21:31,702 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 22:21:31,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 22:21:31,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 22:21:31,731 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 22:21:31,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 22:21:31,742 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 22:21:31,743 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 22:21:31,749 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 22:21:31,750 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 22:21:31,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 22:21:31,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 22:21:31,754 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 22:21:31,756 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 22:21:31,758 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 22:21:31,758 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 22:21:31,760 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 22:21:31,763 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 22:21:31,766 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 22:21:31,769 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 22:21:31,770 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 22:21:31,771 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 22:21:31,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 22:21:31,773 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 22:21:31,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 22:21:31,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 22:21:31,783 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 22:21:31,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 22:21:31,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 22:21:31,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 22:21:31,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 22:21:31,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 22:21:31,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 22:21:31,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 22:21:31,789 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 22:21:31,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 22:21:31,790 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 22:21:31,790 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 22:21:31,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 22:21:31,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 22:21:31,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 22:21:31,793 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 22:21:31,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 22:21:31,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 22:21:31,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 22:21:31,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 22:21:31,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 22:21:31,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 22:21:31,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 22:21:31,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 22:21:31,831 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 22:21:31,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 22:21:31,833 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 22:21:31,833 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 22:21:31,833 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 22:21:31,833 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 22:21:31,833 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 22:21:31,834 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 22:21:31,834 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 22:21:31,834 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 22:21:31,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 22:21:31,834 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 22:21:31,835 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 22:21:31,835 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 22:21:31,835 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 22:21:31,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 22:21:31,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:21:31,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 22:21:31,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 22:21:31,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 22:21:31,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 22:21:31,837 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 22:21:31,837 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 22:21:31,837 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 22:21:31,837 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 22:21:31,838 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 417dec4be084b2867b601c43d125afd61f7d3912bd17641ca10c0f094ab6abe0 [2022-07-13 22:21:32,054 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 22:21:32,071 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 22:21:32,073 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 22:21:32,074 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 22:21:32,074 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 22:21:32,075 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/weaver/security.wvr.c [2022-07-13 22:21:32,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d9243045/7eaf3d170cb344da9a35de06d71e28cc/FLAG358678487 [2022-07-13 22:21:32,515 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 22:21:32,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/weaver/security.wvr.c [2022-07-13 22:21:32,522 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d9243045/7eaf3d170cb344da9a35de06d71e28cc/FLAG358678487 [2022-07-13 22:21:32,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8d9243045/7eaf3d170cb344da9a35de06d71e28cc [2022-07-13 22:21:32,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 22:21:32,545 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 22:21:32,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 22:21:32,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 22:21:32,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 22:21:32,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e9857df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32, skipping insertion in model container [2022-07-13 22:21:32,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 22:21:32,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 22:21:32,739 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] [2022-07-13 22:21:32,742 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:21:32,748 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 22:21:32,763 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] [2022-07-13 22:21:32,764 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 22:21:32,776 INFO L208 MainTranslator]: Completed translation [2022-07-13 22:21:32,776 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32 WrapperNode [2022-07-13 22:21:32,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 22:21:32,778 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 22:21:32,778 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 22:21:32,778 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 22:21:32,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,792 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,813 INFO L137 Inliner]: procedures = 21, calls = 19, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2022-07-13 22:21:32,813 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 22:21:32,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 22:21:32,815 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 22:21:32,815 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 22:21:32,821 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,821 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,829 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,829 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,833 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,834 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,835 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,836 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 22:21:32,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 22:21:32,837 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 22:21:32,837 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 22:21:32,838 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (1/1) ... [2022-07-13 22:21:32,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 22:21:32,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 22:21:32,868 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) [2022-07-13 22:21:32,875 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 [2022-07-13 22:21:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 22:21:32,896 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-07-13 22:21:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-07-13 22:21:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-07-13 22:21:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-07-13 22:21:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 22:21:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 22:21:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 22:21:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 22:21:32,897 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 22:21:32,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 22:21:32,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 22:21:32,899 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-07-13 22:21:32,958 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 22:21:32,960 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 22:21:33,076 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 22:21:33,082 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 22:21:33,082 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-13 22:21:33,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:21:33 BoogieIcfgContainer [2022-07-13 22:21:33,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 22:21:33,086 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 22:21:33,086 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 22:21:33,106 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 22:21:33,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 10:21:32" (1/3) ... [2022-07-13 22:21:33,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e21b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:21:33, skipping insertion in model container [2022-07-13 22:21:33,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 10:21:32" (2/3) ... [2022-07-13 22:21:33,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63e21b20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 10:21:33, skipping insertion in model container [2022-07-13 22:21:33,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:21:33" (3/3) ... [2022-07-13 22:21:33,108 INFO L111 eAbstractionObserver]: Analyzing ICFG security.wvr.c [2022-07-13 22:21:33,113 WARN L143 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-07-13 22:21:33,120 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 22:21:33,121 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 22:21:33,121 INFO L509 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-07-13 22:21:33,176 INFO L135 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-07-13 22:21:33,224 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 85 places, 81 transitions, 178 flow [2022-07-13 22:21:33,260 INFO L129 PetriNetUnfolder]: 3/79 cut-off events. [2022-07-13 22:21:33,260 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:21:33,263 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. [2022-07-13 22:21:33,263 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 81 transitions, 178 flow [2022-07-13 22:21:33,267 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 74 places, 70 transitions, 152 flow [2022-07-13 22:21:33,276 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 22:21:33,281 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@73c23248, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@2c933003 [2022-07-13 22:21:33,282 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-07-13 22:21:33,313 INFO L129 PetriNetUnfolder]: 3/69 cut-off events. [2022-07-13 22:21:33,314 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-07-13 22:21:33,314 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:33,314 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] [2022-07-13 22:21:33,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:33,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:33,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1803071327, now seen corresponding path program 1 times [2022-07-13 22:21:33,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:33,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424063402] [2022-07-13 22:21:33,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:33,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:33,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:33,738 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:33,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:33,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424063402] [2022-07-13 22:21:33,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424063402] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:33,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:33,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:33,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187221680] [2022-07-13 22:21:33,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:33,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:33,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:33,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:33,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:33,782 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:33,788 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) [2022-07-13 22:21:33,788 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:33,788 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:33,789 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:34,226 INFO L129 PetriNetUnfolder]: 32/219 cut-off events. [2022-07-13 22:21:34,226 INFO L130 PetriNetUnfolder]: For 57/60 co-relation queries the response was YES. [2022-07-13 22:21:34,228 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. [2022-07-13 22:21:34,231 INFO L132 encePairwiseOnDemand]: 70/81 looper letters, 34 selfloop transitions, 2 changer transitions 24/106 dead transitions. [2022-07-13 22:21:34,231 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 106 transitions, 377 flow [2022-07-13 22:21:34,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:21:34,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:21:34,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 906 transitions. [2022-07-13 22:21:34,253 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.745679012345679 [2022-07-13 22:21:34,254 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 906 transitions. [2022-07-13 22:21:34,255 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 906 transitions. [2022-07-13 22:21:34,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:34,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 906 transitions. [2022-07-13 22:21:34,267 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) [2022-07-13 22:21:34,275 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) [2022-07-13 22:21:34,276 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) [2022-07-13 22:21:34,277 INFO L186 Difference]: Start difference. First operand has 74 places, 70 transitions, 152 flow. Second operand 15 states and 906 transitions. [2022-07-13 22:21:34,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 106 transitions, 377 flow [2022-07-13 22:21:34,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 106 transitions, 347 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-07-13 22:21:34,292 INFO L242 Difference]: Finished difference. Result has 95 places, 69 transitions, 175 flow [2022-07-13 22:21:34,293 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} [2022-07-13 22:21:34,297 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-07-13 22:21:34,298 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 69 transitions, 175 flow [2022-07-13 22:21:34,299 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) [2022-07-13 22:21:34,299 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:34,299 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] [2022-07-13 22:21:34,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 22:21:34,300 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:34,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:34,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2123246751, now seen corresponding path program 2 times [2022-07-13 22:21:34,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:34,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554228368] [2022-07-13 22:21:34,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:34,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:34,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:34,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:34,634 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554228368] [2022-07-13 22:21:34,634 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554228368] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:34,635 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:34,635 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:34,635 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779187280] [2022-07-13 22:21:34,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:34,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:34,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:34,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:34,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:34,646 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:34,647 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) [2022-07-13 22:21:34,647 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:34,648 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:34,648 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:34,981 INFO L129 PetriNetUnfolder]: 28/247 cut-off events. [2022-07-13 22:21:34,985 INFO L130 PetriNetUnfolder]: For 136/137 co-relation queries the response was YES. [2022-07-13 22:21:34,987 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. [2022-07-13 22:21:34,990 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 49 selfloop transitions, 7 changer transitions 12/114 dead transitions. [2022-07-13 22:21:34,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 114 transitions, 513 flow [2022-07-13 22:21:34,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:21:34,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:21:34,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 854 transitions. [2022-07-13 22:21:34,993 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-07-13 22:21:34,993 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 854 transitions. [2022-07-13 22:21:34,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 854 transitions. [2022-07-13 22:21:34,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:34,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 854 transitions. [2022-07-13 22:21:34,997 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) [2022-07-13 22:21:34,999 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) [2022-07-13 22:21:35,000 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) [2022-07-13 22:21:35,001 INFO L186 Difference]: Start difference. First operand has 95 places, 69 transitions, 175 flow. Second operand 14 states and 854 transitions. [2022-07-13 22:21:35,001 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 114 transitions, 513 flow [2022-07-13 22:21:35,004 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 114 transitions, 420 flow, removed 46 selfloop flow, removed 10 redundant places. [2022-07-13 22:21:35,006 INFO L242 Difference]: Finished difference. Result has 98 places, 75 transitions, 225 flow [2022-07-13 22:21:35,007 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} [2022-07-13 22:21:35,008 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 24 predicate places. [2022-07-13 22:21:35,008 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 75 transitions, 225 flow [2022-07-13 22:21:35,008 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) [2022-07-13 22:21:35,009 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:35,009 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] [2022-07-13 22:21:35,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 22:21:35,009 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:35,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1598753897, now seen corresponding path program 3 times [2022-07-13 22:21:35,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:35,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420657948] [2022-07-13 22:21:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:35,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:35,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420657948] [2022-07-13 22:21:35,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420657948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:35,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:35,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:35,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582721437] [2022-07-13 22:21:35,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:35,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:35,149 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:35,150 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) [2022-07-13 22:21:35,150 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:35,150 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:35,150 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:35,313 INFO L129 PetriNetUnfolder]: 27/233 cut-off events. [2022-07-13 22:21:35,313 INFO L130 PetriNetUnfolder]: For 192/193 co-relation queries the response was YES. [2022-07-13 22:21:35,314 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. [2022-07-13 22:21:35,315 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 32 selfloop transitions, 10 changer transitions 8/96 dead transitions. [2022-07-13 22:21:35,315 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 433 flow [2022-07-13 22:21:35,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:35,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:35,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 545 transitions. [2022-07-13 22:21:35,317 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.747599451303155 [2022-07-13 22:21:35,318 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 545 transitions. [2022-07-13 22:21:35,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 545 transitions. [2022-07-13 22:21:35,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:35,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 545 transitions. [2022-07-13 22:21:35,319 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) [2022-07-13 22:21:35,320 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) [2022-07-13 22:21:35,321 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) [2022-07-13 22:21:35,321 INFO L186 Difference]: Start difference. First operand has 98 places, 75 transitions, 225 flow. Second operand 9 states and 545 transitions. [2022-07-13 22:21:35,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 433 flow [2022-07-13 22:21:35,324 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 96 transitions, 413 flow, removed 10 selfloop flow, removed 6 redundant places. [2022-07-13 22:21:35,340 INFO L242 Difference]: Finished difference. Result has 99 places, 75 transitions, 246 flow [2022-07-13 22:21:35,340 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} [2022-07-13 22:21:35,341 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 25 predicate places. [2022-07-13 22:21:35,341 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 75 transitions, 246 flow [2022-07-13 22:21:35,341 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) [2022-07-13 22:21:35,341 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:35,341 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] [2022-07-13 22:21:35,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 22:21:35,342 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:35,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:35,342 INFO L85 PathProgramCache]: Analyzing trace with hash 606748351, now seen corresponding path program 4 times [2022-07-13 22:21:35,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:35,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480372350] [2022-07-13 22:21:35,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:35,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:35,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:35,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:35,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:35,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480372350] [2022-07-13 22:21:35,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480372350] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:35,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:35,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:35,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463448502] [2022-07-13 22:21:35,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:35,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:35,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:35,466 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:35,466 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) [2022-07-13 22:21:35,466 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:35,467 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:35,467 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:35,634 INFO L129 PetriNetUnfolder]: 27/245 cut-off events. [2022-07-13 22:21:35,635 INFO L130 PetriNetUnfolder]: For 333/337 co-relation queries the response was YES. [2022-07-13 22:21:35,636 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. [2022-07-13 22:21:35,637 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 42 selfloop transitions, 3 changer transitions 9/100 dead transitions. [2022-07-13 22:21:35,637 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 100 transitions, 469 flow [2022-07-13 22:21:35,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:35,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:35,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 558 transitions. [2022-07-13 22:21:35,639 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7654320987654321 [2022-07-13 22:21:35,640 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 558 transitions. [2022-07-13 22:21:35,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 558 transitions. [2022-07-13 22:21:35,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:35,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 558 transitions. [2022-07-13 22:21:35,641 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) [2022-07-13 22:21:35,643 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) [2022-07-13 22:21:35,645 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) [2022-07-13 22:21:35,645 INFO L186 Difference]: Start difference. First operand has 99 places, 75 transitions, 246 flow. Second operand 9 states and 558 transitions. [2022-07-13 22:21:35,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 100 transitions, 469 flow [2022-07-13 22:21:35,648 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 100 transitions, 419 flow, removed 13 selfloop flow, removed 7 redundant places. [2022-07-13 22:21:35,650 INFO L242 Difference]: Finished difference. Result has 102 places, 76 transitions, 252 flow [2022-07-13 22:21:35,650 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} [2022-07-13 22:21:35,651 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2022-07-13 22:21:35,651 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 76 transitions, 252 flow [2022-07-13 22:21:35,652 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) [2022-07-13 22:21:35,652 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:35,652 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] [2022-07-13 22:21:35,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 22:21:35,653 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:35,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:35,653 INFO L85 PathProgramCache]: Analyzing trace with hash 39404075, now seen corresponding path program 5 times [2022-07-13 22:21:35,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:35,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954427679] [2022-07-13 22:21:35,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:35,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:35,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:35,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:35,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:35,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954427679] [2022-07-13 22:21:35,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [954427679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:35,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:35,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:35,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806887675] [2022-07-13 22:21:35,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:35,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:35,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:35,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:35,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:35,777 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:35,778 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) [2022-07-13 22:21:35,778 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:35,778 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:35,779 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:35,975 INFO L129 PetriNetUnfolder]: 25/259 cut-off events. [2022-07-13 22:21:35,976 INFO L130 PetriNetUnfolder]: For 308/310 co-relation queries the response was YES. [2022-07-13 22:21:35,977 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. [2022-07-13 22:21:35,978 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 38 selfloop transitions, 9 changer transitions 8/101 dead transitions. [2022-07-13 22:21:35,978 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 101 transitions, 504 flow [2022-07-13 22:21:35,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:35,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:35,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 549 transitions. [2022-07-13 22:21:35,980 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-07-13 22:21:35,980 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 549 transitions. [2022-07-13 22:21:35,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 549 transitions. [2022-07-13 22:21:35,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:35,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 549 transitions. [2022-07-13 22:21:35,983 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) [2022-07-13 22:21:35,986 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) [2022-07-13 22:21:35,987 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) [2022-07-13 22:21:35,987 INFO L186 Difference]: Start difference. First operand has 102 places, 76 transitions, 252 flow. Second operand 9 states and 549 transitions. [2022-07-13 22:21:35,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 101 transitions, 504 flow [2022-07-13 22:21:35,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 101 transitions, 475 flow, removed 11 selfloop flow, removed 6 redundant places. [2022-07-13 22:21:35,991 INFO L242 Difference]: Finished difference. Result has 106 places, 78 transitions, 299 flow [2022-07-13 22:21:35,991 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} [2022-07-13 22:21:35,992 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2022-07-13 22:21:35,992 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 78 transitions, 299 flow [2022-07-13 22:21:35,993 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) [2022-07-13 22:21:35,993 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:35,993 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] [2022-07-13 22:21:35,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 22:21:35,993 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:35,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:35,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1222135401, now seen corresponding path program 6 times [2022-07-13 22:21:35,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:35,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128528239] [2022-07-13 22:21:35,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:35,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:36,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:36,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:36,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:36,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128528239] [2022-07-13 22:21:36,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128528239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:36,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:36,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:36,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047590589] [2022-07-13 22:21:36,141 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:36,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:36,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:36,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:36,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:36,143 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:36,144 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) [2022-07-13 22:21:36,144 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:36,144 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:36,144 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:36,335 INFO L129 PetriNetUnfolder]: 24/247 cut-off events. [2022-07-13 22:21:36,335 INFO L130 PetriNetUnfolder]: For 460/465 co-relation queries the response was YES. [2022-07-13 22:21:36,336 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. [2022-07-13 22:21:36,337 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 31 selfloop transitions, 2 changer transitions 25/104 dead transitions. [2022-07-13 22:21:36,337 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 104 transitions, 538 flow [2022-07-13 22:21:36,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:21:36,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:21:36,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 842 transitions. [2022-07-13 22:21:36,340 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7425044091710759 [2022-07-13 22:21:36,340 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 842 transitions. [2022-07-13 22:21:36,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 842 transitions. [2022-07-13 22:21:36,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:36,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 842 transitions. [2022-07-13 22:21:36,343 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) [2022-07-13 22:21:36,345 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) [2022-07-13 22:21:36,345 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) [2022-07-13 22:21:36,345 INFO L186 Difference]: Start difference. First operand has 106 places, 78 transitions, 299 flow. Second operand 14 states and 842 transitions. [2022-07-13 22:21:36,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 104 transitions, 538 flow [2022-07-13 22:21:36,348 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 104 transitions, 502 flow, removed 13 selfloop flow, removed 5 redundant places. [2022-07-13 22:21:36,350 INFO L242 Difference]: Finished difference. Result has 118 places, 71 transitions, 228 flow [2022-07-13 22:21:36,350 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} [2022-07-13 22:21:36,352 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 44 predicate places. [2022-07-13 22:21:36,353 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 71 transitions, 228 flow [2022-07-13 22:21:36,353 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) [2022-07-13 22:21:36,353 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:36,353 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] [2022-07-13 22:21:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 22:21:36,354 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash 2131364533, now seen corresponding path program 7 times [2022-07-13 22:21:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:36,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923173322] [2022-07-13 22:21:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:36,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:36,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923173322] [2022-07-13 22:21:36,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923173322] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:36,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:36,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:36,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317881765] [2022-07-13 22:21:36,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:36,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:36,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:36,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:36,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:36,506 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:36,507 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) [2022-07-13 22:21:36,507 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:36,507 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:36,507 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:36,662 INFO L129 PetriNetUnfolder]: 20/214 cut-off events. [2022-07-13 22:21:36,663 INFO L130 PetriNetUnfolder]: For 353/353 co-relation queries the response was YES. [2022-07-13 22:21:36,664 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. [2022-07-13 22:21:36,664 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 45 selfloop transitions, 5 changer transitions 8/104 dead transitions. [2022-07-13 22:21:36,665 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 104 transitions, 532 flow [2022-07-13 22:21:36,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:36,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:36,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 560 transitions. [2022-07-13 22:21:36,667 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7681755829903978 [2022-07-13 22:21:36,667 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 560 transitions. [2022-07-13 22:21:36,667 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 560 transitions. [2022-07-13 22:21:36,667 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:36,667 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 560 transitions. [2022-07-13 22:21:36,669 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) [2022-07-13 22:21:36,670 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) [2022-07-13 22:21:36,670 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) [2022-07-13 22:21:36,670 INFO L186 Difference]: Start difference. First operand has 118 places, 71 transitions, 228 flow. Second operand 9 states and 560 transitions. [2022-07-13 22:21:36,670 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 104 transitions, 532 flow [2022-07-13 22:21:36,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 94 places, 104 transitions, 429 flow, removed 50 selfloop flow, removed 14 redundant places. [2022-07-13 22:21:36,674 INFO L242 Difference]: Finished difference. Result has 100 places, 73 transitions, 240 flow [2022-07-13 22:21:36,674 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} [2022-07-13 22:21:36,675 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 26 predicate places. [2022-07-13 22:21:36,675 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 73 transitions, 240 flow [2022-07-13 22:21:36,675 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) [2022-07-13 22:21:36,676 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:36,676 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] [2022-07-13 22:21:36,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 22:21:36,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:36,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:36,676 INFO L85 PathProgramCache]: Analyzing trace with hash -702033037, now seen corresponding path program 8 times [2022-07-13 22:21:36,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:36,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760546766] [2022-07-13 22:21:36,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:36,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:36,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:36,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:36,777 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1760546766] [2022-07-13 22:21:36,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1760546766] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:36,778 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:36,778 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:36,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182215865] [2022-07-13 22:21:36,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:36,779 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:36,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:36,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:36,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:36,780 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:36,781 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) [2022-07-13 22:21:36,781 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:36,781 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:36,781 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:36,945 INFO L129 PetriNetUnfolder]: 17/185 cut-off events. [2022-07-13 22:21:36,946 INFO L130 PetriNetUnfolder]: For 182/182 co-relation queries the response was YES. [2022-07-13 22:21:36,946 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. [2022-07-13 22:21:36,947 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 31 selfloop transitions, 5 changer transitions 9/91 dead transitions. [2022-07-13 22:21:36,947 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 402 flow [2022-07-13 22:21:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:36,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 547 transitions. [2022-07-13 22:21:36,949 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7503429355281207 [2022-07-13 22:21:36,949 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 547 transitions. [2022-07-13 22:21:36,949 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 547 transitions. [2022-07-13 22:21:36,949 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:36,949 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 547 transitions. [2022-07-13 22:21:36,951 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) [2022-07-13 22:21:36,952 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) [2022-07-13 22:21:36,952 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) [2022-07-13 22:21:36,952 INFO L186 Difference]: Start difference. First operand has 100 places, 73 transitions, 240 flow. Second operand 9 states and 547 transitions. [2022-07-13 22:21:36,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 91 transitions, 402 flow [2022-07-13 22:21:36,954 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 91 transitions, 377 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-13 22:21:36,955 INFO L242 Difference]: Finished difference. Result has 105 places, 72 transitions, 237 flow [2022-07-13 22:21:36,955 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} [2022-07-13 22:21:36,956 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2022-07-13 22:21:36,956 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 72 transitions, 237 flow [2022-07-13 22:21:36,956 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) [2022-07-13 22:21:36,956 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:36,956 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] [2022-07-13 22:21:36,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 22:21:36,957 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:36,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1379725623, now seen corresponding path program 9 times [2022-07-13 22:21:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:36,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770120119] [2022-07-13 22:21:36,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:36,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:37,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:37,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:37,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770120119] [2022-07-13 22:21:37,058 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [770120119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:37,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:37,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:37,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720016931] [2022-07-13 22:21:37,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:37,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:37,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:37,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:37,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:37,061 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:37,061 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) [2022-07-13 22:21:37,061 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:37,061 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:37,061 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:37,221 INFO L129 PetriNetUnfolder]: 15/160 cut-off events. [2022-07-13 22:21:37,221 INFO L130 PetriNetUnfolder]: For 174/174 co-relation queries the response was YES. [2022-07-13 22:21:37,222 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. [2022-07-13 22:21:37,223 INFO L132 encePairwiseOnDemand]: 73/81 looper letters, 31 selfloop transitions, 2 changer transitions 11/90 dead transitions. [2022-07-13 22:21:37,223 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 90 transitions, 406 flow [2022-07-13 22:21:37,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:37,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:37,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 548 transitions. [2022-07-13 22:21:37,225 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7517146776406035 [2022-07-13 22:21:37,225 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 548 transitions. [2022-07-13 22:21:37,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 548 transitions. [2022-07-13 22:21:37,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:37,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 548 transitions. [2022-07-13 22:21:37,227 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) [2022-07-13 22:21:37,228 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) [2022-07-13 22:21:37,228 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) [2022-07-13 22:21:37,228 INFO L186 Difference]: Start difference. First operand has 105 places, 72 transitions, 237 flow. Second operand 9 states and 548 transitions. [2022-07-13 22:21:37,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 90 transitions, 406 flow [2022-07-13 22:21:37,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 90 transitions, 355 flow, removed 13 selfloop flow, removed 12 redundant places. [2022-07-13 22:21:37,231 INFO L242 Difference]: Finished difference. Result has 101 places, 69 transitions, 189 flow [2022-07-13 22:21:37,231 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} [2022-07-13 22:21:37,232 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 27 predicate places. [2022-07-13 22:21:37,232 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 69 transitions, 189 flow [2022-07-13 22:21:37,232 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) [2022-07-13 22:21:37,233 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:37,233 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] [2022-07-13 22:21:37,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 22:21:37,233 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:37,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:37,234 INFO L85 PathProgramCache]: Analyzing trace with hash 1892410847, now seen corresponding path program 10 times [2022-07-13 22:21:37,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:37,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372685693] [2022-07-13 22:21:37,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:37,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:37,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:37,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:37,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:37,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372685693] [2022-07-13 22:21:37,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372685693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:37,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:37,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 22:21:37,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435581706] [2022-07-13 22:21:37,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:37,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 22:21:37,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:37,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 22:21:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 22:21:37,365 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 81 [2022-07-13 22:21:37,366 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) [2022-07-13 22:21:37,366 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:37,366 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 81 [2022-07-13 22:21:37,366 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:37,523 INFO L129 PetriNetUnfolder]: 15/134 cut-off events. [2022-07-13 22:21:37,523 INFO L130 PetriNetUnfolder]: For 86/86 co-relation queries the response was YES. [2022-07-13 22:21:37,524 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. [2022-07-13 22:21:37,525 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 24 selfloop transitions, 3 changer transitions 10/83 dead transitions. [2022-07-13 22:21:37,525 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 83 transitions, 318 flow [2022-07-13 22:21:37,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 22:21:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-07-13 22:21:37,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 542 transitions. [2022-07-13 22:21:37,527 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7434842249657064 [2022-07-13 22:21:37,527 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 542 transitions. [2022-07-13 22:21:37,527 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 542 transitions. [2022-07-13 22:21:37,527 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:37,527 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 542 transitions. [2022-07-13 22:21:37,529 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) [2022-07-13 22:21:37,530 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) [2022-07-13 22:21:37,530 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) [2022-07-13 22:21:37,530 INFO L186 Difference]: Start difference. First operand has 101 places, 69 transitions, 189 flow. Second operand 9 states and 542 transitions. [2022-07-13 22:21:37,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 83 transitions, 318 flow [2022-07-13 22:21:37,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 286 flow, removed 11 selfloop flow, removed 11 redundant places. [2022-07-13 22:21:37,533 INFO L242 Difference]: Finished difference. Result has 95 places, 67 transitions, 160 flow [2022-07-13 22:21:37,533 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} [2022-07-13 22:21:37,533 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 21 predicate places. [2022-07-13 22:21:37,534 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 67 transitions, 160 flow [2022-07-13 22:21:37,534 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) [2022-07-13 22:21:37,534 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:37,534 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] [2022-07-13 22:21:37,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 22:21:37,535 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:37,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:37,535 INFO L85 PathProgramCache]: Analyzing trace with hash 499925854, now seen corresponding path program 1 times [2022-07-13 22:21:37,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:37,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934743835] [2022-07-13 22:21:37,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:37,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:37,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:37,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:37,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934743835] [2022-07-13 22:21:37,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934743835] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:37,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:37,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:37,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164971585] [2022-07-13 22:21:37,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:37,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:37,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:37,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:37,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:37,656 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:37,656 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) [2022-07-13 22:21:37,657 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:37,657 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:37,657 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:37,934 INFO L129 PetriNetUnfolder]: 23/163 cut-off events. [2022-07-13 22:21:37,935 INFO L130 PetriNetUnfolder]: For 68/68 co-relation queries the response was YES. [2022-07-13 22:21:37,935 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. [2022-07-13 22:21:37,936 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 32 selfloop transitions, 3 changer transitions 20/99 dead transitions. [2022-07-13 22:21:37,936 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 99 transitions, 412 flow [2022-07-13 22:21:37,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 22:21:37,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2022-07-13 22:21:37,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 813 transitions. [2022-07-13 22:21:37,938 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.716931216931217 [2022-07-13 22:21:37,938 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 813 transitions. [2022-07-13 22:21:37,938 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 813 transitions. [2022-07-13 22:21:37,938 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:37,939 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 813 transitions. [2022-07-13 22:21:37,940 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) [2022-07-13 22:21:37,942 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) [2022-07-13 22:21:37,942 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) [2022-07-13 22:21:37,943 INFO L186 Difference]: Start difference. First operand has 95 places, 67 transitions, 160 flow. Second operand 14 states and 813 transitions. [2022-07-13 22:21:37,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 99 transitions, 412 flow [2022-07-13 22:21:37,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 99 transitions, 348 flow, removed 20 selfloop flow, removed 9 redundant places. [2022-07-13 22:21:37,945 INFO L242 Difference]: Finished difference. Result has 96 places, 67 transitions, 174 flow [2022-07-13 22:21:37,945 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} [2022-07-13 22:21:37,946 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 22 predicate places. [2022-07-13 22:21:37,946 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 67 transitions, 174 flow [2022-07-13 22:21:37,946 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) [2022-07-13 22:21:37,947 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:37,947 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] [2022-07-13 22:21:37,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 22:21:37,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:37,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:37,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1637742648, now seen corresponding path program 2 times [2022-07-13 22:21:37,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:37,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952525472] [2022-07-13 22:21:37,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:37,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:38,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:38,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:38,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952525472] [2022-07-13 22:21:38,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952525472] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:38,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:38,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:38,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320811260] [2022-07-13 22:21:38,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:38,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:38,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:38,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:38,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:38,061 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:38,062 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) [2022-07-13 22:21:38,062 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:38,062 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:38,062 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:38,354 INFO L129 PetriNetUnfolder]: 23/221 cut-off events. [2022-07-13 22:21:38,354 INFO L130 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-07-13 22:21:38,355 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. [2022-07-13 22:21:38,356 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 48 selfloop transitions, 7 changer transitions 14/113 dead transitions. [2022-07-13 22:21:38,356 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 113 transitions, 524 flow [2022-07-13 22:21:38,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:21:38,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:21:38,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 935 transitions. [2022-07-13 22:21:38,358 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7214506172839507 [2022-07-13 22:21:38,359 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 935 transitions. [2022-07-13 22:21:38,359 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 935 transitions. [2022-07-13 22:21:38,362 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:38,362 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 935 transitions. [2022-07-13 22:21:38,363 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) [2022-07-13 22:21:38,365 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) [2022-07-13 22:21:38,365 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) [2022-07-13 22:21:38,365 INFO L186 Difference]: Start difference. First operand has 96 places, 67 transitions, 174 flow. Second operand 16 states and 935 transitions. [2022-07-13 22:21:38,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 113 transitions, 524 flow [2022-07-13 22:21:38,367 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 113 transitions, 422 flow, removed 40 selfloop flow, removed 12 redundant places. [2022-07-13 22:21:38,369 INFO L242 Difference]: Finished difference. Result has 104 places, 73 transitions, 232 flow [2022-07-13 22:21:38,369 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} [2022-07-13 22:21:38,370 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 30 predicate places. [2022-07-13 22:21:38,370 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 73 transitions, 232 flow [2022-07-13 22:21:38,371 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) [2022-07-13 22:21:38,371 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:38,371 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] [2022-07-13 22:21:38,371 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 22:21:38,372 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:38,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:38,372 INFO L85 PathProgramCache]: Analyzing trace with hash -980388572, now seen corresponding path program 3 times [2022-07-13 22:21:38,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:38,372 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [900260448] [2022-07-13 22:21:38,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:38,372 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:38,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:38,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:38,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:38,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [900260448] [2022-07-13 22:21:38,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [900260448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:38,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:38,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:38,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130083746] [2022-07-13 22:21:38,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:38,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:38,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:38,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:38,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:38,499 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:38,500 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) [2022-07-13 22:21:38,500 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:38,500 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:38,500 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:38,675 INFO L129 PetriNetUnfolder]: 23/222 cut-off events. [2022-07-13 22:21:38,675 INFO L130 PetriNetUnfolder]: For 197/200 co-relation queries the response was YES. [2022-07-13 22:21:38,676 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. [2022-07-13 22:21:38,677 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 41 selfloop transitions, 5 changer transitions 11/101 dead transitions. [2022-07-13 22:21:38,677 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 101 transitions, 501 flow [2022-07-13 22:21:38,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:38,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 591 transitions. [2022-07-13 22:21:38,679 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7296296296296296 [2022-07-13 22:21:38,679 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 591 transitions. [2022-07-13 22:21:38,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 591 transitions. [2022-07-13 22:21:38,680 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:38,680 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 591 transitions. [2022-07-13 22:21:38,681 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) [2022-07-13 22:21:38,682 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) [2022-07-13 22:21:38,682 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) [2022-07-13 22:21:38,682 INFO L186 Difference]: Start difference. First operand has 104 places, 73 transitions, 232 flow. Second operand 10 states and 591 transitions. [2022-07-13 22:21:38,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 101 transitions, 501 flow [2022-07-13 22:21:38,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 101 transitions, 457 flow, removed 22 selfloop flow, removed 8 redundant places. [2022-07-13 22:21:38,685 INFO L242 Difference]: Finished difference. Result has 105 places, 76 transitions, 265 flow [2022-07-13 22:21:38,686 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} [2022-07-13 22:21:38,686 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 31 predicate places. [2022-07-13 22:21:38,686 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 76 transitions, 265 flow [2022-07-13 22:21:38,687 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) [2022-07-13 22:21:38,687 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:38,687 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] [2022-07-13 22:21:38,687 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-13 22:21:38,688 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:38,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:38,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1469204850, now seen corresponding path program 4 times [2022-07-13 22:21:38,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:38,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465632312] [2022-07-13 22:21:38,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:38,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:38,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:38,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:38,776 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465632312] [2022-07-13 22:21:38,776 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465632312] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:38,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:38,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:38,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544238514] [2022-07-13 22:21:38,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:38,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:38,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:38,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:38,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:38,779 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:38,779 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) [2022-07-13 22:21:38,779 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:38,780 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:38,780 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:39,084 INFO L129 PetriNetUnfolder]: 24/337 cut-off events. [2022-07-13 22:21:39,084 INFO L130 PetriNetUnfolder]: For 330/333 co-relation queries the response was YES. [2022-07-13 22:21:39,085 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. [2022-07-13 22:21:39,086 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 58 selfloop transitions, 12 changer transitions 15/129 dead transitions. [2022-07-13 22:21:39,087 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 129 transitions, 709 flow [2022-07-13 22:21:39,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:21:39,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:21:39,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 883 transitions. [2022-07-13 22:21:39,088 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7267489711934156 [2022-07-13 22:21:39,088 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 883 transitions. [2022-07-13 22:21:39,089 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 883 transitions. [2022-07-13 22:21:39,089 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:39,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 883 transitions. [2022-07-13 22:21:39,090 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) [2022-07-13 22:21:39,092 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) [2022-07-13 22:21:39,092 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) [2022-07-13 22:21:39,092 INFO L186 Difference]: Start difference. First operand has 105 places, 76 transitions, 265 flow. Second operand 15 states and 883 transitions. [2022-07-13 22:21:39,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 129 transitions, 709 flow [2022-07-13 22:21:39,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 129 transitions, 666 flow, removed 20 selfloop flow, removed 5 redundant places. [2022-07-13 22:21:39,096 INFO L242 Difference]: Finished difference. Result has 122 places, 84 transitions, 395 flow [2022-07-13 22:21:39,096 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} [2022-07-13 22:21:39,097 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 48 predicate places. [2022-07-13 22:21:39,097 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 84 transitions, 395 flow [2022-07-13 22:21:39,097 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) [2022-07-13 22:21:39,097 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:39,097 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] [2022-07-13 22:21:39,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-13 22:21:39,098 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:39,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:39,098 INFO L85 PathProgramCache]: Analyzing trace with hash -944383944, now seen corresponding path program 5 times [2022-07-13 22:21:39,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:39,098 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532319967] [2022-07-13 22:21:39,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:39,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:39,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:39,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:39,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:39,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532319967] [2022-07-13 22:21:39,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532319967] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:39,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:39,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:39,199 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816055509] [2022-07-13 22:21:39,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:39,199 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:39,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:39,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:39,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:39,200 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:39,201 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) [2022-07-13 22:21:39,201 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:39,201 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:39,201 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:39,514 INFO L129 PetriNetUnfolder]: 20/344 cut-off events. [2022-07-13 22:21:39,514 INFO L130 PetriNetUnfolder]: For 614/621 co-relation queries the response was YES. [2022-07-13 22:21:39,515 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. [2022-07-13 22:21:39,516 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 61 selfloop transitions, 15 changer transitions 13/133 dead transitions. [2022-07-13 22:21:39,516 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 133 transitions, 851 flow [2022-07-13 22:21:39,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:21:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:21:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 945 transitions. [2022-07-13 22:21:39,518 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7291666666666666 [2022-07-13 22:21:39,518 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 945 transitions. [2022-07-13 22:21:39,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 945 transitions. [2022-07-13 22:21:39,526 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:39,526 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 945 transitions. [2022-07-13 22:21:39,528 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) [2022-07-13 22:21:39,529 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) [2022-07-13 22:21:39,530 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) [2022-07-13 22:21:39,530 INFO L186 Difference]: Start difference. First operand has 122 places, 84 transitions, 395 flow. Second operand 16 states and 945 transitions. [2022-07-13 22:21:39,530 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 133 transitions, 851 flow [2022-07-13 22:21:39,534 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 133 transitions, 771 flow, removed 39 selfloop flow, removed 7 redundant places. [2022-07-13 22:21:39,535 INFO L242 Difference]: Finished difference. Result has 136 places, 88 transitions, 490 flow [2022-07-13 22:21:39,536 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} [2022-07-13 22:21:39,536 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 62 predicate places. [2022-07-13 22:21:39,536 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 88 transitions, 490 flow [2022-07-13 22:21:39,537 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) [2022-07-13 22:21:39,537 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:39,537 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] [2022-07-13 22:21:39,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 22:21:39,537 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:39,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:39,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1243082400, now seen corresponding path program 6 times [2022-07-13 22:21:39,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:39,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952871559] [2022-07-13 22:21:39,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:39,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:39,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:39,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:39,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:39,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952871559] [2022-07-13 22:21:39,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952871559] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:39,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:39,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:39,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134414058] [2022-07-13 22:21:39,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:39,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:39,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:39,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:39,676 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:39,676 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) [2022-07-13 22:21:39,676 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:39,676 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:39,677 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:39,854 INFO L129 PetriNetUnfolder]: 18/317 cut-off events. [2022-07-13 22:21:39,854 INFO L130 PetriNetUnfolder]: For 824/831 co-relation queries the response was YES. [2022-07-13 22:21:39,855 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. [2022-07-13 22:21:39,856 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 50 selfloop transitions, 8 changer transitions 11/113 dead transitions. [2022-07-13 22:21:39,856 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 113 transitions, 803 flow [2022-07-13 22:21:39,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:39,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:39,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 592 transitions. [2022-07-13 22:21:39,857 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7308641975308642 [2022-07-13 22:21:39,858 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 592 transitions. [2022-07-13 22:21:39,858 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 592 transitions. [2022-07-13 22:21:39,858 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:39,858 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 592 transitions. [2022-07-13 22:21:39,859 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) [2022-07-13 22:21:39,860 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) [2022-07-13 22:21:39,860 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) [2022-07-13 22:21:39,861 INFO L186 Difference]: Start difference. First operand has 136 places, 88 transitions, 490 flow. Second operand 10 states and 592 transitions. [2022-07-13 22:21:39,861 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 113 transitions, 803 flow [2022-07-13 22:21:39,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 113 transitions, 742 flow, removed 22 selfloop flow, removed 9 redundant places. [2022-07-13 22:21:39,867 INFO L242 Difference]: Finished difference. Result has 136 places, 88 transitions, 482 flow [2022-07-13 22:21:39,867 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} [2022-07-13 22:21:39,867 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 62 predicate places. [2022-07-13 22:21:39,868 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 88 transitions, 482 flow [2022-07-13 22:21:39,868 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) [2022-07-13 22:21:39,868 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:39,868 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] [2022-07-13 22:21:39,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 22:21:39,868 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:39,869 INFO L85 PathProgramCache]: Analyzing trace with hash 1453765160, now seen corresponding path program 7 times [2022-07-13 22:21:39,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:39,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271017529] [2022-07-13 22:21:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:39,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:39,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:39,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271017529] [2022-07-13 22:21:39,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271017529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:39,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:39,970 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:39,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387023856] [2022-07-13 22:21:39,970 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:39,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:39,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:39,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:39,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:39,972 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:39,972 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) [2022-07-13 22:21:39,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:39,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:39,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:40,181 INFO L129 PetriNetUnfolder]: 15/325 cut-off events. [2022-07-13 22:21:40,181 INFO L130 PetriNetUnfolder]: For 775/777 co-relation queries the response was YES. [2022-07-13 22:21:40,182 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. [2022-07-13 22:21:40,183 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 66 selfloop transitions, 10 changer transitions 7/127 dead transitions. [2022-07-13 22:21:40,183 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 127 transitions, 862 flow [2022-07-13 22:21:40,184 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:40,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 610 transitions. [2022-07-13 22:21:40,185 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7530864197530864 [2022-07-13 22:21:40,185 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 610 transitions. [2022-07-13 22:21:40,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 610 transitions. [2022-07-13 22:21:40,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:40,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 610 transitions. [2022-07-13 22:21:40,186 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) [2022-07-13 22:21:40,187 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) [2022-07-13 22:21:40,188 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) [2022-07-13 22:21:40,188 INFO L186 Difference]: Start difference. First operand has 136 places, 88 transitions, 482 flow. Second operand 10 states and 610 transitions. [2022-07-13 22:21:40,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 127 transitions, 862 flow [2022-07-13 22:21:40,192 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 131 places, 127 transitions, 789 flow, removed 26 selfloop flow, removed 10 redundant places. [2022-07-13 22:21:40,194 INFO L242 Difference]: Finished difference. Result has 138 places, 91 transitions, 534 flow [2022-07-13 22:21:40,194 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} [2022-07-13 22:21:40,194 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 64 predicate places. [2022-07-13 22:21:40,194 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 91 transitions, 534 flow [2022-07-13 22:21:40,195 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) [2022-07-13 22:21:40,195 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:40,195 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] [2022-07-13 22:21:40,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 22:21:40,195 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:40,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:40,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1774556640, now seen corresponding path program 8 times [2022-07-13 22:21:40,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:40,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496754249] [2022-07-13 22:21:40,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:40,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:40,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:40,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:40,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:40,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496754249] [2022-07-13 22:21:40,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496754249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:40,290 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:40,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:40,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421929819] [2022-07-13 22:21:40,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:40,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:40,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:40,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:40,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:40,291 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:40,292 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) [2022-07-13 22:21:40,292 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:40,292 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:40,292 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:40,518 INFO L129 PetriNetUnfolder]: 14/301 cut-off events. [2022-07-13 22:21:40,518 INFO L130 PetriNetUnfolder]: For 715/717 co-relation queries the response was YES. [2022-07-13 22:21:40,519 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. [2022-07-13 22:21:40,520 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 37 selfloop transitions, 6 changer transitions 30/117 dead transitions. [2022-07-13 22:21:40,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 117 transitions, 856 flow [2022-07-13 22:21:40,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 22:21:40,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-07-13 22:21:40,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 865 transitions. [2022-07-13 22:21:40,525 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7119341563786008 [2022-07-13 22:21:40,525 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 865 transitions. [2022-07-13 22:21:40,525 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 865 transitions. [2022-07-13 22:21:40,525 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:40,525 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 865 transitions. [2022-07-13 22:21:40,527 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) [2022-07-13 22:21:40,528 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) [2022-07-13 22:21:40,540 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) [2022-07-13 22:21:40,541 INFO L186 Difference]: Start difference. First operand has 138 places, 91 transitions, 534 flow. Second operand 15 states and 865 transitions. [2022-07-13 22:21:40,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 117 transitions, 856 flow [2022-07-13 22:21:40,545 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 117 transitions, 820 flow, removed 15 selfloop flow, removed 5 redundant places. [2022-07-13 22:21:40,547 INFO L242 Difference]: Finished difference. Result has 152 places, 82 transitions, 411 flow [2022-07-13 22:21:40,547 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} [2022-07-13 22:21:40,548 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 78 predicate places. [2022-07-13 22:21:40,548 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 82 transitions, 411 flow [2022-07-13 22:21:40,549 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) [2022-07-13 22:21:40,549 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:40,549 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] [2022-07-13 22:21:40,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 22:21:40,549 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:40,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:40,550 INFO L85 PathProgramCache]: Analyzing trace with hash -128760964, now seen corresponding path program 9 times [2022-07-13 22:21:40,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:40,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693227117] [2022-07-13 22:21:40,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:40,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:40,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:40,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693227117] [2022-07-13 22:21:40,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693227117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:40,667 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:40,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:40,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670327120] [2022-07-13 22:21:40,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:40,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:40,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:40,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:40,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:40,668 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:40,669 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) [2022-07-13 22:21:40,669 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:40,669 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:40,669 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:40,842 INFO L129 PetriNetUnfolder]: 11/220 cut-off events. [2022-07-13 22:21:40,842 INFO L130 PetriNetUnfolder]: For 558/563 co-relation queries the response was YES. [2022-07-13 22:21:40,843 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. [2022-07-13 22:21:40,844 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 39 selfloop transitions, 7 changer transitions 10/100 dead transitions. [2022-07-13 22:21:40,844 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 100 transitions, 642 flow [2022-07-13 22:21:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:40,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-07-13 22:21:40,845 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-07-13 22:21:40,846 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-07-13 22:21:40,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-07-13 22:21:40,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:40,846 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-07-13 22:21:40,847 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) [2022-07-13 22:21:40,848 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) [2022-07-13 22:21:40,849 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) [2022-07-13 22:21:40,849 INFO L186 Difference]: Start difference. First operand has 152 places, 82 transitions, 411 flow. Second operand 10 states and 590 transitions. [2022-07-13 22:21:40,849 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 100 transitions, 642 flow [2022-07-13 22:21:40,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 100 transitions, 552 flow, removed 38 selfloop flow, removed 17 redundant places. [2022-07-13 22:21:40,853 INFO L242 Difference]: Finished difference. Result has 132 places, 81 transitions, 373 flow [2022-07-13 22:21:40,854 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} [2022-07-13 22:21:40,854 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 58 predicate places. [2022-07-13 22:21:40,854 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 81 transitions, 373 flow [2022-07-13 22:21:40,854 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) [2022-07-13 22:21:40,855 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:40,855 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] [2022-07-13 22:21:40,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 22:21:40,855 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:40,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:40,855 INFO L85 PathProgramCache]: Analyzing trace with hash -608837740, now seen corresponding path program 10 times [2022-07-13 22:21:40,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:40,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073931691] [2022-07-13 22:21:40,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:40,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:40,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:40,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:40,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073931691] [2022-07-13 22:21:40,968 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073931691] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:40,968 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:40,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:40,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918383321] [2022-07-13 22:21:40,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:40,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:40,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:40,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:40,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:40,971 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:40,971 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) [2022-07-13 22:21:40,972 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:40,972 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:40,972 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:41,141 INFO L129 PetriNetUnfolder]: 9/195 cut-off events. [2022-07-13 22:21:41,141 INFO L130 PetriNetUnfolder]: For 338/341 co-relation queries the response was YES. [2022-07-13 22:21:41,142 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. [2022-07-13 22:21:41,142 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 39 selfloop transitions, 4 changer transitions 12/99 dead transitions. [2022-07-13 22:21:41,143 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 99 transitions, 577 flow [2022-07-13 22:21:41,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:41,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:41,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 591 transitions. [2022-07-13 22:21:41,144 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7296296296296296 [2022-07-13 22:21:41,144 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 591 transitions. [2022-07-13 22:21:41,144 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 591 transitions. [2022-07-13 22:21:41,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:41,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 591 transitions. [2022-07-13 22:21:41,146 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) [2022-07-13 22:21:41,147 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) [2022-07-13 22:21:41,147 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) [2022-07-13 22:21:41,147 INFO L186 Difference]: Start difference. First operand has 132 places, 81 transitions, 373 flow. Second operand 10 states and 591 transitions. [2022-07-13 22:21:41,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 99 transitions, 577 flow [2022-07-13 22:21:41,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 99 transitions, 515 flow, removed 14 selfloop flow, removed 13 redundant places. [2022-07-13 22:21:41,151 INFO L242 Difference]: Finished difference. Result has 128 places, 78 transitions, 313 flow [2022-07-13 22:21:41,151 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} [2022-07-13 22:21:41,152 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 54 predicate places. [2022-07-13 22:21:41,152 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 78 transitions, 313 flow [2022-07-13 22:21:41,152 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) [2022-07-13 22:21:41,152 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:41,152 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] [2022-07-13 22:21:41,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 22:21:41,153 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:41,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:41,153 INFO L85 PathProgramCache]: Analyzing trace with hash 1443359976, now seen corresponding path program 11 times [2022-07-13 22:21:41,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:41,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857962207] [2022-07-13 22:21:41,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:41,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:41,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:41,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:41,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:41,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857962207] [2022-07-13 22:21:41,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857962207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:41,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:41,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:41,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1982544441] [2022-07-13 22:21:41,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:41,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:41,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:41,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:41,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:41,276 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:41,276 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) [2022-07-13 22:21:41,277 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:41,277 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:41,277 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:41,472 INFO L129 PetriNetUnfolder]: 9/161 cut-off events. [2022-07-13 22:21:41,472 INFO L130 PetriNetUnfolder]: For 226/228 co-relation queries the response was YES. [2022-07-13 22:21:41,473 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. [2022-07-13 22:21:41,473 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 24 selfloop transitions, 1 changer transitions 30/97 dead transitions. [2022-07-13 22:21:41,473 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 97 transitions, 514 flow [2022-07-13 22:21:41,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 22:21:41,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-07-13 22:21:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 918 transitions. [2022-07-13 22:21:41,477 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7083333333333334 [2022-07-13 22:21:41,477 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 918 transitions. [2022-07-13 22:21:41,477 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 918 transitions. [2022-07-13 22:21:41,477 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:41,477 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 918 transitions. [2022-07-13 22:21:41,479 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) [2022-07-13 22:21:41,481 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) [2022-07-13 22:21:41,481 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) [2022-07-13 22:21:41,482 INFO L186 Difference]: Start difference. First operand has 128 places, 78 transitions, 313 flow. Second operand 16 states and 918 transitions. [2022-07-13 22:21:41,482 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 97 transitions, 514 flow [2022-07-13 22:21:41,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 97 transitions, 463 flow, removed 14 selfloop flow, removed 13 redundant places. [2022-07-13 22:21:41,485 INFO L242 Difference]: Finished difference. Result has 129 places, 65 transitions, 186 flow [2022-07-13 22:21:41,485 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} [2022-07-13 22:21:41,486 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 55 predicate places. [2022-07-13 22:21:41,486 INFO L495 AbstractCegarLoop]: Abstraction has has 129 places, 65 transitions, 186 flow [2022-07-13 22:21:41,486 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) [2022-07-13 22:21:41,486 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:41,486 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] [2022-07-13 22:21:41,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 22:21:41,487 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:41,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:41,487 INFO L85 PathProgramCache]: Analyzing trace with hash 451166386, now seen corresponding path program 12 times [2022-07-13 22:21:41,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:41,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [402674897] [2022-07-13 22:21:41,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:41,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:41,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:41,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:41,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:41,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [402674897] [2022-07-13 22:21:41,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [402674897] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:41,608 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:41,608 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:41,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340454066] [2022-07-13 22:21:41,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:41,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:41,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:41,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:41,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:41,610 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:41,611 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) [2022-07-13 22:21:41,611 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:41,611 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:41,611 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:41,774 INFO L129 PetriNetUnfolder]: 7/128 cut-off events. [2022-07-13 22:21:41,774 INFO L130 PetriNetUnfolder]: For 115/116 co-relation queries the response was YES. [2022-07-13 22:21:41,775 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. [2022-07-13 22:21:41,775 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 30 selfloop transitions, 5 changer transitions 6/83 dead transitions. [2022-07-13 22:21:41,775 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 83 transitions, 365 flow [2022-07-13 22:21:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:41,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 582 transitions. [2022-07-13 22:21:41,780 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7185185185185186 [2022-07-13 22:21:41,781 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 582 transitions. [2022-07-13 22:21:41,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 582 transitions. [2022-07-13 22:21:41,782 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:41,782 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 582 transitions. [2022-07-13 22:21:41,786 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) [2022-07-13 22:21:41,787 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) [2022-07-13 22:21:41,787 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) [2022-07-13 22:21:41,787 INFO L186 Difference]: Start difference. First operand has 129 places, 65 transitions, 186 flow. Second operand 10 states and 582 transitions. [2022-07-13 22:21:41,787 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 83 transitions, 365 flow [2022-07-13 22:21:41,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 83 transitions, 288 flow, removed 34 selfloop flow, removed 18 redundant places. [2022-07-13 22:21:41,789 INFO L242 Difference]: Finished difference. Result has 97 places, 67 transitions, 189 flow [2022-07-13 22:21:41,790 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} [2022-07-13 22:21:41,790 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 23 predicate places. [2022-07-13 22:21:41,790 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 67 transitions, 189 flow [2022-07-13 22:21:41,790 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) [2022-07-13 22:21:41,791 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:41,791 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] [2022-07-13 22:21:41,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-13 22:21:41,792 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:41,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:41,793 INFO L85 PathProgramCache]: Analyzing trace with hash -1759837642, now seen corresponding path program 13 times [2022-07-13 22:21:41,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:41,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302361384] [2022-07-13 22:21:41,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:41,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:41,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:41,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:41,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:41,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302361384] [2022-07-13 22:21:41,918 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302361384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:41,918 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:41,918 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:41,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538067953] [2022-07-13 22:21:41,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:41,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:41,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:41,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:41,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:41,922 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:41,923 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) [2022-07-13 22:21:41,923 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:41,923 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:41,923 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:42,100 INFO L129 PetriNetUnfolder]: 5/130 cut-off events. [2022-07-13 22:21:42,100 INFO L130 PetriNetUnfolder]: For 51/52 co-relation queries the response was YES. [2022-07-13 22:21:42,101 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. [2022-07-13 22:21:42,101 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 25 selfloop transitions, 5 changer transitions 11/83 dead transitions. [2022-07-13 22:21:42,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 83 transitions, 358 flow [2022-07-13 22:21:42,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:42,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:42,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 579 transitions. [2022-07-13 22:21:42,105 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7148148148148148 [2022-07-13 22:21:42,106 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 579 transitions. [2022-07-13 22:21:42,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 579 transitions. [2022-07-13 22:21:42,106 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:42,106 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 579 transitions. [2022-07-13 22:21:42,107 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) [2022-07-13 22:21:42,109 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) [2022-07-13 22:21:42,109 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) [2022-07-13 22:21:42,109 INFO L186 Difference]: Start difference. First operand has 97 places, 67 transitions, 189 flow. Second operand 10 states and 579 transitions. [2022-07-13 22:21:42,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 83 transitions, 358 flow [2022-07-13 22:21:42,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 83 transitions, 336 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-07-13 22:21:42,111 INFO L242 Difference]: Finished difference. Result has 103 places, 67 transitions, 201 flow [2022-07-13 22:21:42,111 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} [2022-07-13 22:21:42,112 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 29 predicate places. [2022-07-13 22:21:42,112 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 67 transitions, 201 flow [2022-07-13 22:21:42,113 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) [2022-07-13 22:21:42,113 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:42,113 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] [2022-07-13 22:21:42,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-13 22:21:42,114 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:42,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:42,114 INFO L85 PathProgramCache]: Analyzing trace with hash 425023720, now seen corresponding path program 14 times [2022-07-13 22:21:42,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:42,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464434773] [2022-07-13 22:21:42,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:42,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:42,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:42,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464434773] [2022-07-13 22:21:42,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464434773] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:42,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:42,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151727781] [2022-07-13 22:21:42,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:42,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:42,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:42,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:42,224 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:42,225 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) [2022-07-13 22:21:42,225 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:42,225 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:42,226 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:42,386 INFO L129 PetriNetUnfolder]: 6/156 cut-off events. [2022-07-13 22:21:42,387 INFO L130 PetriNetUnfolder]: For 119/120 co-relation queries the response was YES. [2022-07-13 22:21:42,387 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. [2022-07-13 22:21:42,388 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 36 selfloop transitions, 6 changer transitions 7/91 dead transitions. [2022-07-13 22:21:42,388 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 91 transitions, 414 flow [2022-07-13 22:21:42,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:42,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:42,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 589 transitions. [2022-07-13 22:21:42,389 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7271604938271605 [2022-07-13 22:21:42,389 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 589 transitions. [2022-07-13 22:21:42,390 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 589 transitions. [2022-07-13 22:21:42,390 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:42,390 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 589 transitions. [2022-07-13 22:21:42,391 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) [2022-07-13 22:21:42,392 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) [2022-07-13 22:21:42,392 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) [2022-07-13 22:21:42,393 INFO L186 Difference]: Start difference. First operand has 103 places, 67 transitions, 201 flow. Second operand 10 states and 589 transitions. [2022-07-13 22:21:42,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 91 transitions, 414 flow [2022-07-13 22:21:42,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 91 transitions, 369 flow, removed 15 selfloop flow, removed 8 redundant places. [2022-07-13 22:21:42,395 INFO L242 Difference]: Finished difference. Result has 106 places, 70 transitions, 238 flow [2022-07-13 22:21:42,395 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} [2022-07-13 22:21:42,396 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 32 predicate places. [2022-07-13 22:21:42,396 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 70 transitions, 238 flow [2022-07-13 22:21:42,396 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) [2022-07-13 22:21:42,396 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:42,397 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] [2022-07-13 22:21:42,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-13 22:21:42,397 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:42,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:42,397 INFO L85 PathProgramCache]: Analyzing trace with hash -936834938, now seen corresponding path program 15 times [2022-07-13 22:21:42,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:42,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116204074] [2022-07-13 22:21:42,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:42,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:42,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:42,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:42,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:42,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116204074] [2022-07-13 22:21:42,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116204074] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:42,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:42,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:42,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573556247] [2022-07-13 22:21:42,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:42,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:42,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:42,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:42,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:42,511 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:42,512 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) [2022-07-13 22:21:42,512 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:42,512 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:42,512 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:42,695 INFO L129 PetriNetUnfolder]: 4/157 cut-off events. [2022-07-13 22:21:42,696 INFO L130 PetriNetUnfolder]: For 137/140 co-relation queries the response was YES. [2022-07-13 22:21:42,696 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. [2022-07-13 22:21:42,697 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 30 selfloop transitions, 5 changer transitions 11/88 dead transitions. [2022-07-13 22:21:42,697 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 88 transitions, 428 flow [2022-07-13 22:21:42,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:42,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:42,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-07-13 22:21:42,701 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-07-13 22:21:42,701 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-07-13 22:21:42,701 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-07-13 22:21:42,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:42,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-07-13 22:21:42,703 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) [2022-07-13 22:21:42,704 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) [2022-07-13 22:21:42,705 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) [2022-07-13 22:21:42,705 INFO L186 Difference]: Start difference. First operand has 106 places, 70 transitions, 238 flow. Second operand 10 states and 584 transitions. [2022-07-13 22:21:42,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 88 transitions, 428 flow [2022-07-13 22:21:42,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 88 transitions, 403 flow, removed 11 selfloop flow, removed 5 redundant places. [2022-07-13 22:21:42,707 INFO L242 Difference]: Finished difference. Result has 113 places, 71 transitions, 262 flow [2022-07-13 22:21:42,708 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} [2022-07-13 22:21:42,708 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 39 predicate places. [2022-07-13 22:21:42,708 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 71 transitions, 262 flow [2022-07-13 22:21:42,708 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) [2022-07-13 22:21:42,708 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:42,708 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] [2022-07-13 22:21:42,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-13 22:21:42,709 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:42,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:42,709 INFO L85 PathProgramCache]: Analyzing trace with hash 2008951810, now seen corresponding path program 16 times [2022-07-13 22:21:42,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:42,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160590583] [2022-07-13 22:21:42,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:42,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:42,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:42,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:42,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:42,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160590583] [2022-07-13 22:21:42,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160590583] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:42,825 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:42,825 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:42,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861576063] [2022-07-13 22:21:42,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:42,826 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:42,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:42,826 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:42,827 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:42,827 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:42,828 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) [2022-07-13 22:21:42,828 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:42,828 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:42,828 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:43,006 INFO L129 PetriNetUnfolder]: 2/170 cut-off events. [2022-07-13 22:21:43,009 INFO L130 PetriNetUnfolder]: For 188/191 co-relation queries the response was YES. [2022-07-13 22:21:43,009 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. [2022-07-13 22:21:43,010 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 36 selfloop transitions, 8 changer transitions 9/95 dead transitions. [2022-07-13 22:21:43,010 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 95 transitions, 486 flow [2022-07-13 22:21:43,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:43,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:43,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 590 transitions. [2022-07-13 22:21:43,012 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7283950617283951 [2022-07-13 22:21:43,012 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 590 transitions. [2022-07-13 22:21:43,012 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 590 transitions. [2022-07-13 22:21:43,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:43,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 590 transitions. [2022-07-13 22:21:43,013 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) [2022-07-13 22:21:43,014 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) [2022-07-13 22:21:43,015 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) [2022-07-13 22:21:43,015 INFO L186 Difference]: Start difference. First operand has 113 places, 71 transitions, 262 flow. Second operand 10 states and 590 transitions. [2022-07-13 22:21:43,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 95 transitions, 486 flow [2022-07-13 22:21:43,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 95 transitions, 454 flow, removed 12 selfloop flow, removed 7 redundant places. [2022-07-13 22:21:43,018 INFO L242 Difference]: Finished difference. Result has 118 places, 74 transitions, 316 flow [2022-07-13 22:21:43,019 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} [2022-07-13 22:21:43,019 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 44 predicate places. [2022-07-13 22:21:43,019 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 74 transitions, 316 flow [2022-07-13 22:21:43,020 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) [2022-07-13 22:21:43,020 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:43,020 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] [2022-07-13 22:21:43,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-13 22:21:43,020 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:43,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:43,021 INFO L85 PathProgramCache]: Analyzing trace with hash 635828710, now seen corresponding path program 17 times [2022-07-13 22:21:43,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:43,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591733636] [2022-07-13 22:21:43,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:43,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:43,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:43,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:43,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:43,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591733636] [2022-07-13 22:21:43,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591733636] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:43,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:43,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:43,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548394467] [2022-07-13 22:21:43,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:43,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:43,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:43,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:43,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:43,136 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:43,137 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) [2022-07-13 22:21:43,137 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:43,137 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:43,137 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:43,302 INFO L129 PetriNetUnfolder]: 2/155 cut-off events. [2022-07-13 22:21:43,302 INFO L130 PetriNetUnfolder]: For 260/269 co-relation queries the response was YES. [2022-07-13 22:21:43,303 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. [2022-07-13 22:21:43,303 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 31 selfloop transitions, 4 changer transitions 12/89 dead transitions. [2022-07-13 22:21:43,304 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 89 transitions, 484 flow [2022-07-13 22:21:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 584 transitions. [2022-07-13 22:21:43,305 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7209876543209877 [2022-07-13 22:21:43,305 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 584 transitions. [2022-07-13 22:21:43,305 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 584 transitions. [2022-07-13 22:21:43,306 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:43,306 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 584 transitions. [2022-07-13 22:21:43,307 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) [2022-07-13 22:21:43,308 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) [2022-07-13 22:21:43,308 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) [2022-07-13 22:21:43,308 INFO L186 Difference]: Start difference. First operand has 118 places, 74 transitions, 316 flow. Second operand 10 states and 584 transitions. [2022-07-13 22:21:43,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 89 transitions, 484 flow [2022-07-13 22:21:43,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 89 transitions, 454 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-07-13 22:21:43,311 INFO L242 Difference]: Finished difference. Result has 123 places, 71 transitions, 275 flow [2022-07-13 22:21:43,311 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} [2022-07-13 22:21:43,312 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 49 predicate places. [2022-07-13 22:21:43,312 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 71 transitions, 275 flow [2022-07-13 22:21:43,312 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) [2022-07-13 22:21:43,313 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:43,313 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] [2022-07-13 22:21:43,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-13 22:21:43,313 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash 519427062, now seen corresponding path program 18 times [2022-07-13 22:21:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:43,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021521235] [2022-07-13 22:21:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:43,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:43,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:43,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:43,419 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021521235] [2022-07-13 22:21:43,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021521235] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:43,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:43,420 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:43,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548491010] [2022-07-13 22:21:43,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:43,422 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:43,422 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) [2022-07-13 22:21:43,422 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:43,422 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:43,423 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:43,590 INFO L129 PetriNetUnfolder]: 2/126 cut-off events. [2022-07-13 22:21:43,590 INFO L130 PetriNetUnfolder]: For 148/155 co-relation queries the response was YES. [2022-07-13 22:21:43,591 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. [2022-07-13 22:21:43,591 INFO L132 encePairwiseOnDemand]: 72/81 looper letters, 21 selfloop transitions, 3 changer transitions 13/79 dead transitions. [2022-07-13 22:21:43,591 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 79 transitions, 390 flow [2022-07-13 22:21:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:43,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:43,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 576 transitions. [2022-07-13 22:21:43,593 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7111111111111111 [2022-07-13 22:21:43,593 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 576 transitions. [2022-07-13 22:21:43,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 576 transitions. [2022-07-13 22:21:43,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:43,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 576 transitions. [2022-07-13 22:21:43,594 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) [2022-07-13 22:21:43,596 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) [2022-07-13 22:21:43,596 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) [2022-07-13 22:21:43,596 INFO L186 Difference]: Start difference. First operand has 123 places, 71 transitions, 275 flow. Second operand 10 states and 576 transitions. [2022-07-13 22:21:43,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 79 transitions, 390 flow [2022-07-13 22:21:43,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 79 transitions, 351 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-07-13 22:21:43,599 INFO L242 Difference]: Finished difference. Result has 115 places, 66 transitions, 202 flow [2022-07-13 22:21:43,599 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} [2022-07-13 22:21:43,603 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 41 predicate places. [2022-07-13 22:21:43,603 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 66 transitions, 202 flow [2022-07-13 22:21:43,603 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) [2022-07-13 22:21:43,603 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:43,603 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] [2022-07-13 22:21:43,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-13 22:21:43,604 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:43,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:43,604 INFO L85 PathProgramCache]: Analyzing trace with hash 263507622, now seen corresponding path program 19 times [2022-07-13 22:21:43,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:43,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006812440] [2022-07-13 22:21:43,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:43,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:43,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:43,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:43,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006812440] [2022-07-13 22:21:43,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006812440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:43,711 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:43,711 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:43,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121766574] [2022-07-13 22:21:43,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:43,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:43,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:43,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:43,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:43,713 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:43,714 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) [2022-07-13 22:21:43,714 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:43,714 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:43,714 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:43,858 INFO L129 PetriNetUnfolder]: 2/91 cut-off events. [2022-07-13 22:21:43,858 INFO L130 PetriNetUnfolder]: For 68/70 co-relation queries the response was YES. [2022-07-13 22:21:43,859 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. [2022-07-13 22:21:43,859 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 19 selfloop transitions, 5 changer transitions 9/75 dead transitions. [2022-07-13 22:21:43,859 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 75 transitions, 318 flow [2022-07-13 22:21:43,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:43,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:43,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 573 transitions. [2022-07-13 22:21:43,861 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.7074074074074074 [2022-07-13 22:21:43,861 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 573 transitions. [2022-07-13 22:21:43,861 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 573 transitions. [2022-07-13 22:21:43,861 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:43,861 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 573 transitions. [2022-07-13 22:21:43,862 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) [2022-07-13 22:21:43,863 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) [2022-07-13 22:21:43,863 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) [2022-07-13 22:21:43,864 INFO L186 Difference]: Start difference. First operand has 115 places, 66 transitions, 202 flow. Second operand 10 states and 573 transitions. [2022-07-13 22:21:43,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 75 transitions, 318 flow [2022-07-13 22:21:43,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 75 transitions, 269 flow, removed 14 selfloop flow, removed 16 redundant places. [2022-07-13 22:21:43,866 INFO L242 Difference]: Finished difference. Result has 102 places, 65 transitions, 181 flow [2022-07-13 22:21:43,866 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} [2022-07-13 22:21:43,868 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 28 predicate places. [2022-07-13 22:21:43,868 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 65 transitions, 181 flow [2022-07-13 22:21:43,869 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) [2022-07-13 22:21:43,869 INFO L192 CegarLoopForPetriNet]: Found error trace [2022-07-13 22:21:43,869 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] [2022-07-13 22:21:43,869 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-13 22:21:43,869 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-07-13 22:21:43,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 22:21:43,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1160016076, now seen corresponding path program 20 times [2022-07-13 22:21:43,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 22:21:43,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798928233] [2022-07-13 22:21:43,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 22:21:43,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 22:21:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 22:21:43,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 22:21:43,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 22:21:43,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798928233] [2022-07-13 22:21:43,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798928233] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 22:21:43,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 22:21:43,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 22:21:43,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674312616] [2022-07-13 22:21:43,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 22:21:43,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 22:21:43,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 22:21:43,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 22:21:43,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-07-13 22:21:43,979 INFO L443 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 81 [2022-07-13 22:21:43,979 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) [2022-07-13 22:21:43,979 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-07-13 22:21:43,979 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 81 [2022-07-13 22:21:43,980 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-07-13 22:21:44,100 INFO L129 PetriNetUnfolder]: 2/69 cut-off events. [2022-07-13 22:21:44,100 INFO L130 PetriNetUnfolder]: For 41/41 co-relation queries the response was YES. [2022-07-13 22:21:44,100 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. [2022-07-13 22:21:44,101 INFO L132 encePairwiseOnDemand]: 71/81 looper letters, 0 selfloop transitions, 0 changer transitions 64/64 dead transitions. [2022-07-13 22:21:44,101 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 64 transitions, 236 flow [2022-07-13 22:21:44,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 22:21:44,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-07-13 22:21:44,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 565 transitions. [2022-07-13 22:21:44,102 INFO L488 CegarLoopForPetriNet]: DFA transition density 0.6975308641975309 [2022-07-13 22:21:44,102 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 565 transitions. [2022-07-13 22:21:44,102 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 565 transitions. [2022-07-13 22:21:44,102 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-07-13 22:21:44,102 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 565 transitions. [2022-07-13 22:21:44,103 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) [2022-07-13 22:21:44,104 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) [2022-07-13 22:21:44,104 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) [2022-07-13 22:21:44,104 INFO L186 Difference]: Start difference. First operand has 102 places, 65 transitions, 181 flow. Second operand 10 states and 565 transitions. [2022-07-13 22:21:44,104 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 64 transitions, 236 flow [2022-07-13 22:21:44,105 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 64 transitions, 205 flow, removed 5 selfloop flow, removed 11 redundant places. [2022-07-13 22:21:44,105 INFO L242 Difference]: Finished difference. Result has 93 places, 0 transitions, 0 flow [2022-07-13 22:21:44,105 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} [2022-07-13 22:21:44,106 INFO L279 CegarLoopForPetriNet]: 74 programPoint places, 19 predicate places. [2022-07-13 22:21:44,106 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 0 transitions, 0 flow [2022-07-13 22:21:44,106 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) [2022-07-13 22:21:44,108 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-07-13 22:21:44,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-07-13 22:21:44,109 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-07-13 22:21:44,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-13 22:21:44,109 INFO L356 BasicCegarLoop]: Path program histogram: [20, 10] [2022-07-13 22:21:44,114 INFO L226 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-07-13 22:21:44,115 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-13 22:21:44,119 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.07 10:21:44 BasicIcfg [2022-07-13 22:21:44,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-13 22:21:44,120 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-13 22:21:44,120 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-13 22:21:44,121 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-13 22:21:44,121 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 10:21:33" (3/4) ... [2022-07-13 22:21:44,123 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-07-13 22:21:44,138 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-07-13 22:21:44,138 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-07-13 22:21:44,142 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 16 nodes and edges [2022-07-13 22:21:44,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-07-13 22:21:44,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-07-13 22:21:44,143 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-07-13 22:21:44,173 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-13 22:21:44,173 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-13 22:21:44,174 INFO L158 Benchmark]: Toolchain (without parser) took 11629.41ms. Allocated memory was 86.0MB in the beginning and 197.1MB in the end (delta: 111.1MB). Free memory was 52.1MB in the beginning and 73.9MB in the end (delta: -21.8MB). Peak memory consumption was 89.3MB. Max. memory is 16.1GB. [2022-07-13 22:21:44,174 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:21:44,175 INFO L158 Benchmark]: CACSL2BoogieTranslator took 230.46ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 51.9MB in the beginning and 86.8MB in the end (delta: -34.9MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2022-07-13 22:21:44,175 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.57ms. Allocated memory is still 111.1MB. Free memory was 86.8MB in the beginning and 85.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-13 22:21:44,176 INFO L158 Benchmark]: Boogie Preprocessor took 21.93ms. Allocated memory is still 111.1MB. Free memory was 85.2MB in the beginning and 84.3MB in the end (delta: 859.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-13 22:21:44,176 INFO L158 Benchmark]: RCFGBuilder took 247.47ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 73.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-13 22:21:44,176 INFO L158 Benchmark]: TraceAbstraction took 11033.50ms. Allocated memory was 111.1MB in the beginning and 197.1MB in the end (delta: 86.0MB). Free memory was 73.0MB in the beginning and 77.0MB in the end (delta: -4.1MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. [2022-07-13 22:21:44,177 INFO L158 Benchmark]: Witness Printer took 53.09ms. Allocated memory is still 197.1MB. Free memory was 77.0MB in the beginning and 73.9MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-13 22:21:44,179 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 86.0MB. Free memory was 55.7MB in the beginning and 55.7MB in the end (delta: 25.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 230.46ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 51.9MB in the beginning and 86.8MB in the end (delta: -34.9MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.57ms. Allocated memory is still 111.1MB. Free memory was 86.8MB in the beginning and 85.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 21.93ms. Allocated memory is still 111.1MB. Free memory was 85.2MB in the beginning and 84.3MB in the end (delta: 859.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 247.47ms. Allocated memory is still 111.1MB. Free memory was 84.3MB in the beginning and 73.3MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 11033.50ms. Allocated memory was 111.1MB in the beginning and 197.1MB in the end (delta: 86.0MB). Free memory was 73.0MB in the beginning and 77.0MB in the end (delta: -4.1MB). Peak memory consumption was 83.5MB. Max. memory is 16.1GB. * Witness Printer took 53.09ms. Allocated memory is still 197.1MB. Free memory was 77.0MB in the beginning and 73.9MB in the end (delta: 3.1MB). 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: 10.9s, OverallIterations: 30, TraceHistogramMax: 1, PathProgramHistogramMax: 20, EmptinessCheckTime: 0.0s, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1703 SdHoareTripleChecker+Valid, 2.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1703 mSDsluCounter, 3790 SdHoareTripleChecker+Invalid, 1.7s 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, 4.2s 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.2s 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! [2022-07-13 22:21:44,223 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